Dolby Laboratories Licensing Corporation

United States of America

Back to Profile

1-100 of 172 for Dolby Laboratories Licensing Corporation Sort by
Query
Patent
Canada - CIPO
Aggregations Reset Report
Date
2023 4
2022 4
2021 16
2020 7
2019 4
See more
IPC Class
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing 39
H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic 21
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders 16
H04S 3/02 - Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other 10
H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control 10
See more
Status
Pending 46
Registered / In Force 126
Found results for  patents
  1     2        Next Page

1.

MULTI-STEP DISPLAY MAPPING AND METADATA RECONSTRUCTION FOR HDR VIDEO

      
Document Number 03233103
Status Pending
Filing Date 2022-09-28
Open to Public Date 2023-04-06
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Rotti, Shruthi Suresh
  • Pytlarz, Jaclyn Anne
  • Atkins, Robin
  • Gopalakrishnan, Subhadra

Abstract

Methods and systems for multi-step display mapping and metadata reconstruction for high-dynamic range (HDR) images are described. In an encoder, given an HDR input image with input HDR metadata in a first dynamic range, an intermediate, base layer image in a second dynamic range is constructed based on the input image. In a decoder, using base-layer metadata, the input HDR metadata, and dynamic range characteristics of a target display, a processor generates reconstructed metadata which when used in combination with the base layer image allow a display mapping process to map the base layer image to the target display as if it was mapping directly the HDR image to the target display.

IPC Classes  ?

  • G06T 5/00 - Image enhancement or restoration

2.

TENSOR-PRODUCT B-SPLINE PREDICTION FOR HDR VIDEO IN MOBILE APPLICATIONS

      
Document Number 03231530
Status Pending
Filing Date 2022-09-08
Open to Public Date 2023-03-16
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Kadu, Harshad
  • Su, Guan-Ming
  • Qu, Sheng
  • Klittmark, Per Jonas Andreas
  • Ganapathy Kathirvelu, Hariharan

Abstract

Tensor-Product B-splines (TPB) have been shown to improve video quality when used to represent reshaping functions to map reshaped standard dynamic range content into high dynamic range (HDR) content; however, TPB prediction is computationally intensive and may not be supported by legacy devices. Methods and systems for backwards-compatible signaling of TPB-related metadata and a fast TPB prediction method are presented to overcome both of these limitations. Computation overhead for a TPB-based 3D look-up table is reduced by using temporary two-dimensional arrays. A remapping of the most significant bits of a legacy bit-depth parameter allows for backwards compatibility.

IPC Classes  ?

  • H04N 19/30 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
  • H04N 21/2343 - Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

3.

METHOD AND APPARATUS FOR METADATA-BASED DYNAMIC PROCESSING OF AUDIO DATA

      
Document Number 03230363
Status Pending
Filing Date 2022-08-24
Open to Public Date 2023-03-02
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Netherlands)
Inventor
  • Fersch, Christof
  • Norcross, Scott Gregory

Abstract

Described herein is a method of metadata-based dynamic processing of audio data for playback, the method including: receiving, by a decoder, a bitstream including audio data and metadata for dynamic loudness adjustment; decoding, by the decoder, the audio data and the metadata to obtain decoded audio data and the metadata; determining, by the decoder, from the metadata, one or more processing parameters for dynamic loudness adjustment based on a playback condition; applying the determined one or more processing parameters to the decoded audio data to obtain processed audio data; and outputting the processed audio data for playback. Described is further a method of encoding audio data and metadata for dynamic loudness adjustment into a bitstream. Moreover, described are a respective decoder and encoder, a respective system and computer program products.

IPC Classes  ?

  • G10L 19/16 - Vocoder architecture
  • H03G 7/00 - Volume compression or expansion in amplifiers
  • G10L 21/0364 - Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
  • H03G 3/00 - Gain control in amplifiers or frequency changers
  • H03G 11/00 - Limiting amplitude; Limiting rate of change of amplitude

4.

SIGNALING OF PRIORITY PROCESSING ORDER FOR METADATA MESSAGING IN VIDEO CODING

      
Document Number 03221431
Status Pending
Filing Date 2022-06-27
Open to Public Date 2023-01-05
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yin, Peng
  • Mccarthy, Sean Thomas
  • Husak, Walter J.
  • Konstantinides, Konstantinos

Abstract

Methods, systems, and bitstream syntax are described for determining the processing order of metadata messaging, such as supplemental enhancement information (SEI) messaging in MPEG video coding.

IPC Classes  ?

  • H04N 19/117 - Filters, e.g. for pre-processing or post-processing
  • H04N 19/46 - Embedding additional information in the video signal during the compression process
  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
  • H04N 19/85 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression

5.

AUDIO CODEC WITH ADAPTIVE GAIN CONTROL OF DOWNMIXED SIGNALS

      
Document Number 03212631
Status Pending
Filing Date 2022-03-08
Open to Public Date 2022-09-15
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Netherlands)
Inventor
  • Setiawan, Panji
  • Tyagi, Rishabh
  • Bruhn, Stefan

Abstract

A method for performing gain control on audio signals is provided. In some implementations, the method involves determining downmixed signals associated with one or more downmix channels associated with a current frame of an audio signal to be encoded. In some implementations, the method involves determining whether an overload condition exists for an encoder. In some implementation, the method involves determining a gain parameter. In some implementations, the method involves determining at least one gain transition function based on the gain parameter and a gain parameter associated with a preceding frame of the audio signal. In some implementations, the method involves applying the at least one gain transition function to one or more of the downmixed signals. In some implementations, the method involves encoding the downmixed signals in connection with information indicative of gain control applied to the current frame.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/002 - Dynamic bit allocation
  • G10L 19/005 - Correction of errors induced by the transmission channel, if related to the coding algorithm
  • G10L 19/16 - Vocoder architecture
  • G10L 19/22 - Mode decision, i.e. based on audio signal content versus external parameters
  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

6.

IMMERSIVE VOICE AND AUDIO SERVICES (IVAS) WITH ADAPTIVE DOWNMIX STRATEGIES

      
Document Number 03203960
Status Pending
Filing Date 2021-12-02
Open to Public Date 2022-06-09
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Netherlands)
Inventor
  • Mundt, Harald
  • Mcgrath, David S.
  • Tyagi, Rishabh

Abstract

Disclosed is an audio signal encoding/decoding method that uses an encoding downmix strategy applied at an encoder that is different than a decoding re-mix/upmix strategy applied at a decoder. Based on the type of downmix coding scheme, the method comprises: computing input downmixing gains to be applied to the input audio signal to construct a primary downmix channel; determining downmix scaling gains to scale the primary downmix channel; generating prediction gains based on the input audio signal, the input downmixing gains and the downmix scaling gains; determining residual channel(s) from the side channels by using the primary downmix channel and the prediction gains to generate side channel predictions and subtracting the side channel predictions from the side channels; determining decorrelation gains based on energy in the residual channels; encoding the primary downmix channel, the residual channel(s), the prediction gains and the decorrelation gains; and sending the bitstream to a decoder.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • H04S 5/00 - Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
  • G10L 19/24 - Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding

7.

PROCESSING PARAMETRICALLY CODED AUDIO

      
Document Number 03192886
Status Pending
Filing Date 2021-09-07
Open to Public Date 2022-03-17
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Breebaart, Dirk Jeroen
  • Eckert, Michael
  • Purnhagen, Heiko

Abstract

A method comprising receiving a first input bit stream for a first parametrically coded input audio signal, the first input bit stream including data representing a first input core audio signal and a first set including at least one spatial parameter relating to the first parametrically coded input audio signal. A first covariance matrix of the first parametrically coded audio signal is determined based on the spatial parameter(s) of the first set. A modified set including at least one spatial parameter is determined based on the determined first covariance matrix, wherein the modified set is different from the first set. An output core audio signal is determined, which is based on, or constituted by, the first input core audio signal. An output bit stream for a parametrically coded output audio signal is generated, the output bit stream including data representing the output core audio signal and the modified set.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/16 - Vocoder architecture

8.

DISTRIBUTION OF HIGH DYNAMIC RANGE IMAGES IN A MIXED CAPABILITY PLAYBACK SYSTEM

      
Document Number 03188511
Status Pending
Filing Date 2021-06-30
Open to Public Date 2022-01-06
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Su, Guan-Ming
  • Lakshminarayanan, Gopi

Abstract

A method for distributing High Dynamic Range (HDR) content to playback devices for displaying images where the HDR content is encoded to an HDR bitstream and the HDR bitstream is subsequently decoded by a playback device. The HDR bitstream contains auxiliary metadata packets that are based upon the processing capability of the playback device.

IPC Classes  ?

  • H04N 1/64 - Colour picture communication systems - Details therefor, e.g. coding or decoding means therefor
  • H04N 21/2343 - Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
  • H04N 21/235 - Processing of additional data, e.g. scrambling of additional data or processing content descriptors
  • H04N 21/63 - Control signaling between client, server and network components; Network processes for video distribution between server and clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing

9.

FRAME-RATE SCALABLE VIDEO CODING

      
Document Number 03192296
Status Pending
Filing Date 2021-06-15
Open to Public Date 2021-12-23
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Yin, Peng
  • Lu, Taoran
  • Pu, Fangjun
  • Mccarthy, Sean Thomas
  • Husak, Walter J.
  • Chen, Tao
  • Su, Guan-Ming

Abstract

Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally- efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

IPC Classes  ?

  • H04N 19/146 - Data rate or code amount at the encoder output

10.

FRAME-RATE SCALABLE VIDEO CODING

      
Document Number 03231105
Status Pending
Filing Date 2021-06-15
Open to Public Date 2021-12-23
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Yin, Peng
  • Lu, Taoran
  • Pu, Fangjun
  • Mccarthy, Sean Thomas
  • Husak, Walter J.
  • Chen, Tao
  • Su, Guan-Ming

Abstract

Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

IPC Classes  ?

  • H04N 19/31 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the temporal domain

11.

FRAME-RATE SCALABLE VIDEO CODING

      
Document Number 03231109
Status Pending
Filing Date 2021-06-15
Open to Public Date 2021-12-23
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Yin, Peng
  • Lu, Taoran
  • Pu, Fangjun
  • Mccarthy, Sean Thomas
  • Husak, Walter J.
  • Chen, Tao
  • Su, Guan-Ming

Abstract

Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

12.

FRAME-RATE SCALABLE VIDEO CODING

      
Document Number 03187271
Status Pending
Filing Date 2021-06-15
Open to Public Date 2021-12-23
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Yin, Peng
  • Lu, Taoran
  • Pu, Fangjun
  • Mccarthy, Sean Thomas
  • Husak, Walter J.
  • Chen, Tao
  • Su, Guan-Ming

Abstract

Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

IPC Classes  ?

  • H04N 19/31 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the temporal domain
  • H04N 19/187 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scalable video layer

13.

METHODS AND DEVICES FOR ENCODING AND/OR DECODING SPATIAL BACKGROUND NOISE WITHIN A MULTI-CHANNEL INPUT SIGNAL

      
Document Number 03185659
Status Pending
Filing Date 2021-06-10
Open to Public Date 2021-12-16
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Eckert, Michael
  • Tyagi, Rishabh

Abstract

The present document describes a method (600) for encoding a multi-channel input signal (101) which comprises N different channels. The method (600) comprises, for a current frame of a sequence of frames, determining (601) whether the current frame is an active frame or an inactive frame using a signal and/or a voice activity detector, and determining (602) a downmix signal (103) based on the multi-channel input signal (101), wherein the downmix signal (103) comprises N channels or less. In addition, the method (600) comprises determining (603) upmixing metadata (105) comprising a set of parameters for generating, based on the downmix signal (103), a reconstructed multi-channel signal (111) comprising N channels, wherein the upmixing metadata (105) is determined in dependance of whether the current frame is an active frame or an inactive frame. The method (600) further comprises encoding (604) the upmixing metadata (105) into a bitstream.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/012 - Comfort noise or silence coding

14.

ENCODING OF MULTI-CHANNEL AUDIO SIGNALS COMPRISING DOWNMIXING OF A PRIMARY AND TWO OR MORE SCALED NON-PRIMARY INPUT CHANNELS

      
Document Number 03186590
Status Pending
Filing Date 2021-06-10
Open to Public Date 2021-12-16
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Mcgrath, David S.

Abstract

Systems, methods, and computer program products are disclosed for adaptive downmixing of audio signals with improved continuity. An audio encoding system receives an input multi-channel audio signal including a primary input audio channel and L non-primary input audio channels. The system determines a set of L input gains. For each of the channels and gains, the system forms a respective scaled non-primary input audio channel. The system forms a primary output audio channel from the sum of the primary input audio channel and the scaled non-primary input audio channels. The system determines a set of L prediction gains. The system forms a prediction channel from the primary output audio channel. The system forms L non-primary output audio channels. The system forms an output multi-channel audio signal from the primary output audio channel and the L non-primary output audio channels.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/04 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

15.

QUANTIZATION AND ENTROPY CODING OF PARAMETERS FOR A LOW LATENCY AUDIO CODEC

      
Document Number 03186884
Status Pending
Filing Date 2021-06-10
Open to Public Date 2021-12-16
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Mcgrath, David S.
  • Tyagi, Rishabh
  • Brown, Stefanie
  • Torres, Juan Felix

Abstract

Described is a method of frame-wise encoding metadata for an input signal, the metadata comprising a plurality of at least partially interrelated parameters calculable from the input signal. The method comprises, for each frame: iteratively performing, by using a looping process, steps of: determining a processing strategy from a plurality of processing strategies for calculating and quantizing the parameters; calculating and quantizing the parameters based on the determined processing strategy to obtain quantized parameters; and encoding the quantized parameters. In particular, each of the plurality of processing strategies comprises a respective first indication indicative of an ordering related to the calculation and quantization of individual parameters; and the processing strategy is determined based on at least one bitrate threshold.

IPC Classes  ?

  • G10L 19/032 - Quantisation or dequantisation of spectral components
  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

16.

METHODS, APPARATUS, AND SYSTEMS FOR DETECTION AND EXTRACTION OF SPATIALLY-IDENTIFIABLE SUBBAND AUDIO SOURCES

      
Document Number 03185685
Status Pending
Filing Date 2021-06-11
Open to Public Date 2021-12-16
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Master, Aaron Steven
  • Lu, Lie
  • Mundt, Harald

Abstract

In an embodiment, a method comprises: transforming one or more frames of a two-channel time domain audio signal into a time-frequency domain representation including a plurality of time-frequency tiles, wherein the frequency domain of the time-frequency domain representation includes a plurality of frequency bins grouped into subbands. For each time-frequency tile, the method comprises: calculating spatial parameters and a level for the time-frequency tile; modifying the spatial parameters using shift and squeeze parameters; obtaining a softmask value for each frequency bin using the modified spatial parameters, the level and subband information; and applying the softmask values to the time-frequency tile to generate a modified time-frequency tile of an estimated audio source. In an embodiment, a plurality of frames of the time-frequency tiles are assembled into a plurality of chunks, wherein each chunk includes a plurality of subbands, and the method described above is performed on each subband of each chunk.

IPC Classes  ?

17.

BITRATE DISTRIBUTION IN IMMERSIVE VOICE AND AUDIO SERVICES

      
Document Number 03156634
Status Pending
Filing Date 2020-10-28
Open to Public Date 2021-05-06
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tyagi, Rishabh
  • Torres, Juan Felix
  • Brown, Stefanie

Abstract

Embodiments are disclosed for bitrate distribution in immersive voice and audio services. In an embodiment, a method of encoding an IVAS bitstream comprises: receiving an input audio signal; downmixing the input audio signal into one or more downmix channels and spatial metadata; reading a set of one or more bitrates for the downmix channels and a set of quantization levels for the spatial metadata from a bitrate distribution control table; determining a combination of the one or more bitrates for the downmix channels; determining a metadata quantization level from the set of metadata quantization levels using a bitrate distribution process; quantizing and coding the spatial metadata using the metadata quantization level; generating, using the combination of one or more bitrates, a downmix bitstream for the one or more downmix channels; combining the downmix bitstream, the quantized and coded spatial metadata and the set of quantization levels into the IVAS bitstream.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

18.

MULTICHANNEL AUDIO ENCODE AND DECODE USING DIRECTIONAL METADATA

      
Document Number 03159189
Status Pending
Filing Date 2020-10-29
Open to Public Date 2021-05-06
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Mcgrath, David S.

Abstract

The disclosure relates to methods of processing a spatial audio signal for generating a compressed representation of the spatial audio signal. The methods include analyzing the spatial audio signal to determine directions of arrival for one or more audio elements; for at least one frequency subband, determining respective indications of signal power associated with the directions of arrival; generating metadata including direction information that includes indications of the directions of arrival of the audio elements, and energy information that includes respective indications of signal power; generating a channel-based audio signal with a predefined number of channels based on the spatial audio signal; and outputting, as the compressed representation, the channel-based audio signal and the metadata. The disclosure further relates to methods of processing a compressed representation of a spatial audio signal for generating a reconstructed representation of the spatial audio signal, and to corresponding apparatus, programs, and storage media.

IPC Classes  ?

  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

19.

METHODS AND SYSTEM FOR WAVEFORM CODING OF AUDIO SIGNALS WITH A GENERATIVE MODEL

      
Document Number 03157876
Status Pending
Filing Date 2020-10-16
Open to Public Date 2021-04-22
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Klejsa, Janusz
  • Biswas, Arijit
  • Villemoes, Lars
  • Fejgin, Roy M.
  • Zhou, Cong

Abstract

Described herein is a method of waveform decoding, the method including the steps of: (a) receiving, by a waveform decoder, a bitstream including a finite bitrate representation of a source signal; (b) waveform decoding the finite bitrate representation of the source signal to obtain a waveform approximation of the source signal; (c) providing the waveform approximation of the source signal to a generative model that implements a probability density function, to obtain a probability distribution for a reconstructed signal of the source signal; and (d) generating the reconstructed signal of the source signal based on the probability distribution. Described are further a method and system for waveform coding and a method of training a generative model.

IPC Classes  ?

  • H03M 1/66 - Digital/analogue converters
  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

20.

AUDIO FILTERBANK WITH DECORRELATING COMPONENTS

      
Document Number 03150449
Status Pending
Filing Date 2020-09-02
Open to Public Date 2021-03-11
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Mcgrath, David S.

Abstract

An multi-input, multi-output audio process is implemented as a linear system for use in an audio filterbank to convert a set of frequency-domain input audio signals into a set of frequency-domain output audio signals. A transfer function from one input to one output is defined as a frequency dependent gain function. In some implementations, the transfer function includes a direct component that is substantially defined as a frequency dependent gain, and one or more decorrelated components that have frequency-varying group phase response. The transfer function is formed from a set of sub-band functions, with each sub-band function being formed from a set of corresponding component transfer functions including direct component and one or more decorrelated components.

IPC Classes  ?

  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
  • H03H 21/00 - Adaptive networks
  • H04S 3/02 - Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

21.

LOW-LATENCY, LOW-FREQUENCY EFFECTS CODEC

      
Document Number 03153258
Status Pending
Filing Date 2020-09-01
Open to Public Date 2021-03-11
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tyagi, Rishabh
  • Mcgrath, David

Abstract

In some implementations, a method of encoding a low-frequency effect (LFE) channel comprises: receiving a time-domain LFE channel signal; filtering, using a low-pass filter, the time-domain LFE channel signal; converting the filtered time-domain LFE channel signal into a frequency-domain representation of the LFE channel signal that includes a number of coefficients representing a frequency spectrum of the LFE channel signal; arranging coefficients into a number of subband groups corresponding to different frequency bands of the LFE channel signal; quantizing coefficients in each subband group according to a frequency response curve of the low-pass filter; encoding the quantized coefficients in each subband group using an entropy coder tuned for the subband group; and generating a bitstream including the encoded quantized coefficients; and storing the bitstream on a storage device or streaming the bitstream to a downstream device.

IPC Classes  ?

  • G10L 19/032 - Quantisation or dequantisation of spectral components
  • G10L 19/022 - Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring

22.

ACOUSTIC ECHO CANCELLATION CONTROL FOR DISTRIBUTED AUDIO DEVICES

      
Document Number 03146871
Status Pending
Filing Date 2020-07-29
Open to Public Date 2021-02-04
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Netherlands)
Inventor
  • Dickins, Glenn N.
  • Hines, Christopher Graham
  • Gunawan, David
  • Cartwright, Richard J.
  • Seefeldt, Alan J.
  • Arteaga, Daniel
  • Thomas, Mark R. P.
  • Lando, Joshua B.

Abstract

An audio processing method may involve receiving output signals from each microphone of a plurality of microphones in an audio environment, the output signals corresponding to a current utterance of a person and determining, based on the output signals, one or more aspects of context information relating to the person, including an estimated current proximity of the person to one or more microphone locations. The method may involve selecting two or more loudspeaker-equipped audio devices based, at least in part, on the one or more aspects of the context information, determining one or more types of audio processing changes to apply to audio data being rendered to loudspeaker feed signals for the audio devices and causing one or more types of audio processing changes to be applied. In some examples, the audio processing changes have the effect of increasing a speech to echo ratio at one or more microphones.

IPC Classes  ?

  • G10L 21/02 - Speech enhancement, e.g. noise reduction or echo cancellation
  • H04R 3/02 - Circuits for transducers for preventing acoustic reaction
  • G10L 15/06 - Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice

23.

ENCODING AND DECODING IVAS BITSTREAMS

      
Document Number 03146169
Status Pending
Filing Date 2020-07-30
Open to Public Date 2021-02-04
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tyagi, Rishabh
  • Torres, Juan Felix

Abstract

Encoding/decoding an immersive voice and audio services (IVAS) bitstream comprises: encoding/decoding a coding mode indicator in a common header (CH) section of an IVAS bitstream, encoding/decoding a mode header or tool header in the tool header (TH) section of the bitstream, the TH section following the CH section, encoding/decoding a metadata payload in a metadata payload (MDP) section of the bitstream, the MDP section following the CH section, encoding/decoding an enhanced voice services (EVS) payload in an EVS payload (EP) section of the bitstream, the EP section following the CH section, and on the encoder side, storing or streaming the encoded bitstream, and on the decoder side, controlling an audio decoder based on the coding mode, the tool header, the EVS payload, and the metadata payload or storing a representation of same.

IPC Classes  ?

  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

24.

SYSTEMS AND METHODS FOR COVARIANCE SMOOTHING

      
Document Number 03147429
Status Pending
Filing Date 2020-07-31
Open to Public Date 2021-02-04
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Mcgrath, David S.
  • Brown, Stefanie
  • Torres, Juan Felix

Abstract

Methods and systems for improving signal processing by smoothing the covariance matrix of a multi-channel signal by setting a forgetting factor based on the bins of a band. A method and system for resetting the smoothing based on transient detection is also disclosed. A method and system for resampling for the smoothing during a banding transition is also disclosed.

IPC Classes  ?

  • G06F 17/15 - Correlation function computation
  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G06F 17/16 - Matrix or vector computation

25.

LOW LATENCY AUDIO FILTERBANK HAVING IMPROVED FREQUENCY RESOLUTION

      
Document Number 03142163
Status Pending
Filing Date 2020-06-25
Open to Public Date 2020-12-30
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Mcgrath, David S.

Abstract

A filterbank, suitable for modifying audio signals with dynamic gains in each band, is constructed so that the perceived latency is small, while a larger group delay is applied at low frequencies to enable higher frequency resolution in the lower frequency bands. The higher group delay at low frequencies is achieved by inserting an all-pass filter into the reconstructed filter response.

IPC Classes  ?

26.

OPTICAL SWITCH FOR SINGLE AND MULTIPLE PROJECTORS

      
Document Number 03138905
Status Pending
Filing Date 2020-05-08
Open to Public Date 2020-11-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Arntsen, John Frederick
  • Lippey, Barret

Abstract

A projection system and method therefor comprises a first light source configured to emit a first-eye light, wherein the first-eye light includes a first set of wavelengths; a second light source configured to emit a second-eye light, wherein the second-eye light includes a second set of wavelengths; a first projector including first projection optics configured to receive a first input light; and an optical switch configured to be switched between an a first mode and a second mode, wherein the optical switch is configured to, in the first mode, combine the first-eye light and the second-eye light into a combined light and direct the combined light to the first projection optics as the first input light.

IPC Classes  ?

  • H04N 9/31 - Projection devices for colour picture display
  • G02B 27/10 - Beam splitting or combining systems
  • G02F 1/00 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G03B 21/20 - Lamp housings
  • G03B 21/26 - Projecting separately subsidiary matter simultaneously with main image
  • H04N 5/74 - Projection arrangements for image reproduction, e.g. using eidophor

27.

AUDIO PROCESSING IN IMMERSIVE AUDIO SERVICES

      
Document Number 03116181
Status Pending
Filing Date 2019-11-12
Open to Public Date 2020-05-22
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Bruhn, Stefan
  • Torres, Juan Felix
  • Mcgrath, David S.
  • Lee, Brian

Abstract

The disclosure herein generally relates to capturing, acoustic pre-processing, encoding, decoding, and rendering of directional audio of an audio scene. In particular, it relates to a device adapted to modify a directional property of a captured directional audio in response to spatial data of a microphone system capturing the directional audio. The disclosure further relates to a rendering device configured to modify a directional property of a received directional audio in response to received spatial data.

IPC Classes  ?

  • H04R 3/00 - Circuits for transducers
  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

28.

TRANSFORMING AUDIO SIGNALS CAPTURED IN DIFFERENT FORMATS INTO A REDUCED NUMBER OF FORMATS FOR SIMPLIFYING ENCODING AND DECODING OPERATIONS

      
Document Number 03091248
Status Pending
Filing Date 2019-10-07
Open to Public Date 2020-04-16
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Bruhn, Stefan
  • Eckert, Michael
  • Torres, Juan Felix
  • Brown, Stefanie
  • Mcgrath, David S.

Abstract

The disclosed embodiments enable converting audio signals captured in various formats by various capture devices into a limited number of formats that can be processed by an audio codec (e.g., an Immersive Voice and Audio Services (IVAS) codec). In an embodiment, a simplification unit of the audio device receives an audio signal captured by one or more audio capture devices coupled to the audio device. The simplification unit determines whether the audio signal is in a format that is supported/not supported by an encoding unit of the audio device. Based on the determining, the simplification unit, converts the audio signal into a format that is supported by the encoding unit. In an embodiment, if the simplification unit determines that the audio signal is in a spatial format, the simplification unit can convert the audio signal into a spatial "mezzanine" format supported by the encoding.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

29.

PROJECTOR LIGHT SOURCE DIMMING USING METADATA FROM FUTURE FRAMES

      
Document Number 03114112
Status Pending
Filing Date 2019-09-25
Open to Public Date 2020-04-02
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Richards, Martin J.
  • Lippey, Barret
  • Pertierra, Juan P.
  • Khaydarov, Dzhakhangir V.
  • Dewald, Duane Scott
  • Wainwright, Nathan Shawn
  • Hennigan, Darren
  • Jackson, John David

Abstract

A projection display system comprises a light source configured to emit a light in response to a content data; an optical modulator configured to modulate the light; and a controller configured to adjust a light level of the projection display system based on the content data and a metadata relating to a future frame, thereby to reduce a perceptibility of a visual artifact.

IPC Classes  ?

  • H04N 9/31 - Projection devices for colour picture display

30.

METHODS AND DEVICES FOR ENCODING AND/OR DECODING IMMERSIVE AUDIO SIGNALS

      
Document Number 03091150
Status Pending
Filing Date 2019-07-02
Open to Public Date 2020-01-09
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Mcgrath, David S.
  • Eckert, Michael
  • Purnhagen, Heiko
  • Bruhn, Stefan

Abstract

The present document describes a method (700) for encoding a multi-channel input signal (201). The method (700) comprises determining (701) a plurality of downmix channel signals (203) from the multi-channel input signal (201) and performing (702) energy compaction of the plurality of downmix channel signals (203) to provide a plurality of compacted channel signals (404). Furthermore, the method (700) comprises determining (703) joint coding metadata (205) based on the plurality of compacted channel signals (404) and based on the multi-channel input signal (201), wherein the joint coding metadata (205) is such that it allows upmixing of the plurality of compacted channel signals (404) to an approximation of the multi-channel input signal (201). In addition, the method (700) comprises encoding (704) the plurality of compacted channel signals (404) and the joint coding metadata (205).

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/18 - Vocoders using multiple modes
  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
  • G10L 19/04 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques

31.

METHODS AND DEVICES FOR GENERATING OR DECODING A BITSTREAM COMPRISING IMMERSIVE AUDIO SIGNALS

      
Document Number 03091241
Status Pending
Filing Date 2019-07-02
Open to Public Date 2020-01-09
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Bruhn, Stefan
  • Torres, Juan Felix

Abstract

The present document describes a method (500) for generating a bitstream (101), wherein the bitstream (101) comprises a sequence of superframes (400) for a sequence of frames of an immersive audio signal (111). The method (500) comprises, repeatedly for the sequence of superframes (400), inserting (501) coded audio data (206) for one or more frames of one or more downmix channel signals (203) derived from the immersive audio signal (111), into data fields (411, 421, 412, 422) of a superframe (400); and inserting (502) metadata (202, 205) for reconstructing one or more frames of the immersive audio signal (111) from the coded audio data (206), into a metadata field (403) of the superframe (400).

IPC Classes  ?

  • G10L 19/16 - Vocoder architecture
  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

32.

PROJECTOR CONTROLLER AND ASSOCIATED METHOD

      
Document Number 03100527
Status Pending
Filing Date 2019-05-14
Open to Public Date 2019-11-21
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Arntsen, John Frederick
  • Pertierra, Juan P.
  • Richards, Martin J.
  • Lippey, Barret
  • Orlick, Christopher John
  • Gorny, Douglas J.

Abstract

A projector controller includes an object detector and control electronics, and is configured to protect audience members from intense light imposing an exclusion zone in front of a projector. The object detector is configured to optically sense a presence of an object in a detection region beneath the exclusion zone and above the audience members. The control electronics is configured to control the projector when the object detector indicates the presence of the object in the detection region. A method for protecting audience members from intense light imposing an exclusion zone in front of an output of a projector includes: (i) optically sensing a presence of an object in a detection region between the exclusion zone and the audience members, and (ii) controlling the projector when the presence of the object is sensed in the detection region.

IPC Classes  ?

  • H04N 9/31 - Projection devices for colour picture display

33.

SYSTEMS AND METHODS FOR DIGITAL LASER PROJECTION WITH INCREASED CONTRAST USING FOURIER FILTER

      
Document Number 03090821
Status Pending
Filing Date 2019-04-01
Open to Public Date 2019-10-10
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Pertierra, Juan P.
  • Richards, Martin J.

Abstract

An optical filter to increase contrast of an image generated with a spatial light modulator includes a lens for spatially Fourier transforming modulated light from the spatial light modulator, and an optical filter mask positioned at a Fourier plane of the lens to filter the modulated light. The modulated light has a plurality of diffraction orders, and the optical filter mask transmits at least one of the diffraction orders of the modulated light and block a remaining portion of the modulated light. A method that improves contrast of an image generated with a spatial light modulator includes spatially Fourier transforming modulated light from the spatial light modulator onto a Fourier plane, and filtering the modulated light by transmitting at least one diffraction order of the modulated light at the Fourier plane and blocking a remaining portion of the modulated light at the Fourier plane.

IPC Classes  ?

  • G02B 27/46 - Systems using spatial filters
  • G03H 1/16 - Processes or apparatus for producing holograms using Fourier transform
  • H04N 9/31 - Projection devices for colour picture display
  • G02B 26/00 - Optical devices or arrangements for the control of light using movable or deformable optical elements
  • G03H 1/10 - Processes or apparatus for producing holograms using modulated reference beam
  • G03H 1/12 - Spatial modulation, e.g. ghost imaging
  • G03H 1/14 - Temporal modulation, e.g. extending depth of field or phase compensation for object motion
  • G03H 1/22 - Processes or apparatus for obtaining an optical image from holograms

34.

IMAGE RESHAPING IN VIDEO CODING USING RATE DISTORTION OPTIMIZATION

      
Document Number 03091190
Status In Force
Filing Date 2019-02-13
Open to Public Date 2019-08-22
Grant Date 2023-12-05
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yin, Peng
  • Pu, Fangjun
  • Lu, Taoran
  • Chen, Tao
  • Husak, Walter J.
  • Mccarthy, Sean Thomas

Abstract

Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.

IPC Classes  ?

  • H04N 19/503 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
  • H04N 19/107 - Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
  • H04N 19/117 - Filters, e.g. for pre-processing or post-processing
  • H04N 19/147 - Data rate or code amount at the encoder output according to rate distortion criteria
  • H04N 19/159 - Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
  • H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
  • H04N 19/46 - Embedding additional information in the video signal during the compression process
  • H04N 19/82 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
  • H04N 19/85 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression

35.

IMAGE RESHAPING IN VIDEO CODING USING RATE DISTORTION OPTIMIZATION

      
Document Number 03142715
Status Pending
Filing Date 2019-02-13
Open to Public Date 2019-08-22
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yin, Peng
  • Pu, Fangjun
  • Lu, Taoran
  • Chen, Tao
  • Husak, Walter J.
  • Mccarthy, Sean Thomas

Abstract

Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.

IPC Classes  ?

  • H04N 19/40 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
  • H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
  • H04N 19/174 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks

36.

SOURCE COLOR VOLUME INFORMATION MESSAGING

      
Document Number 03039361
Status In Force
Filing Date 2017-10-03
Open to Public Date 2018-04-12
Grant Date 2021-05-18
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Chen, Tao
  • Yin, Peng
  • Lu, Taoran
  • Husak, Walter J.

Abstract

Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and maximum luminance values in the source data. Messaging data signaling an active region in each picture may also be included.

IPC Classes  ?

  • H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
  • H04N 21/235 - Processing of additional data, e.g. scrambling of additional data or processing content descriptors
  • H04N 21/84 - Generation or processing of descriptive data, e.g. content descriptors
  • H04N 19/46 - Embedding additional information in the video signal during the compression process
  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

37.

SOURCE COLOR VOLUME INFORMATION MESSAGING

      
Document Number 03112712
Status In Force
Filing Date 2017-10-03
Open to Public Date 2018-04-12
Grant Date 2023-09-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Chen, Tao
  • Yin, Peng
  • Lu, Taoran
  • Husak, Walter J.

Abstract

Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and maximum luminance values in the source data. Messaging data signaling an active region in each picture may also be included.

IPC Classes  ?

  • H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

38.

SOURCE COLOR VOLUME INFORMATION MESSAGING

      
Document Number 03206194
Status Pending
Filing Date 2017-10-03
Open to Public Date 2018-04-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Chen, Tao
  • Yin, Peng
  • Lu, Taoran
  • Husak, Walter J.

Abstract

Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and maximum luminance values in the source data. Messaging data signaling an active region in each picture may also be included.

IPC Classes  ?

  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

39.

SOURCE COLOR VOLUME INFORMATION MESSAGING

      
Document Number 03205776
Status Pending
Filing Date 2017-10-03
Open to Public Date 2018-04-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Chen, Tao
  • Yin, Peng
  • Lu, Taoran
  • Husak, Walter J.

Abstract

Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and maximum luminance values in the source data. Messaging data signaling an active region in each picture may also be included.

IPC Classes  ?

  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
  • H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component

40.

HEADTRACKING FOR PARAMETRIC BINAURAL OUTPUT SYSTEM AND METHOD

      
Document Number 03005113
Status In Force
Filing Date 2016-11-17
Open to Public Date 2017-05-26
Grant Date 2020-07-21
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Breebaart, Dirk Jeroen
  • Cooper, David Matthew
  • Davis, Mark F.
  • Mcgrath, David S.
  • Kjoerling, Kristofer
  • Mundt, Harald
  • Wilson, Rhonda J.

Abstract

A method of encoding channel or object based input audio for playback, the method including the steps of: (a) initially rendering the channel or object based input audio into an initial output presentation; (b) determining an estimate of the dominant audio component from the channel or object based input audio and determining a series of dominant audio component weighting factors for mapping the initial output presentation into the dominant audio component; (c) determining an estimate of the dominant audio component direction or position; and (d) encoding the initial output presentation, the dominant audio component weighting factors, the dominant audio component direction or position as the encoded signal for playback.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

41.

HEADTRACKING FOR PARAMETRIC BINAURAL OUTPUT SYSTEM AND METHOD

      
Document Number 03080981
Status In Force
Filing Date 2016-11-17
Open to Public Date 2017-05-26
Grant Date 2023-07-11
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Breebaart, Dirk Jeroen
  • Cooper, David Matthew
  • Davis, Mark F.
  • Kjoerling, Kristofer
  • Mcgrath, David S.
  • Mundt, Harald
  • Wilson, Rhonda J.

Abstract

A method of encoding channel or object based input audio for playback, the method including the steps of: (a) initially rendering the channel or object based input audio into an initial output presentation; (b) determining an estimate of the dominant audio component from the channel or object based input audio and determining a series of dominant audio component weighting factors for mapping the initial output presentation into the dominant audio component; (c) determining an estimate of the dominant audio component direction or position; and (d) encoding the initial output presentation, the dominant audio component weighting factors, the dominant audio component direction or position as the encoded signal for playback.

IPC Classes  ?

  • H04S 3/02 - Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
  • H04R 3/00 - Circuits for transducers
  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

42.

AUDIO DECODER AND DECODING METHOD

      
Document Number 02999271
Status Pending
Filing Date 2016-08-23
Open to Public Date 2017-03-02
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Breebaart, Dirk Jeroen
  • Cooper, David Matthew
  • Samuelsson, Leif Jonas

Abstract

A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency bands and including a set of multi-tap convolution matrix parameters for at least one of the frequency bands.

IPC Classes  ?

  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

43.

AUDIO ENCODING AND DECODING USING PRESENTATION TRANSFORM PARAMETERS

      
Document Number 03219512
Status Pending
Filing Date 2016-08-24
Open to Public Date 2017-03-02
Owner
  • DOLBY INTERNATIONAL AB (Netherlands)
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Breebaart, Dirk Jeroen
  • Cooper, David M.
  • Samuelsson, Leif J.
  • Koppens, Jeroen
  • Wilson, Rhonda Joy
  • Purnhagen, Heiko
  • Stahlmann, Alexander

Abstract

A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second playback stream presentation, wherein the transform parameters are determined by minimization of a measure of a difference between the approximation of the second playback stream presentation and the second playback stream presentation, and encoding the first playback stream presentation and the set of transform parameters for transmission to a decoder.

IPC Classes  ?

  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

44.

AUDIO ENCODING AND DECODING USING PRESENTATION TRANSFORM PARAMETERS

      
Document Number 02999328
Status In Force
Filing Date 2016-08-24
Open to Public Date 2017-03-02
Grant Date 2024-01-02
Owner
  • DOLBY INTERNATIONAL AB (Ireland)
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Breebaart, Dirk Jeroen
  • Cooper, David M.
  • Samuelsson, Leif J.
  • Koppens, Jeroen
  • Wilson, Rhonda Joy
  • Purnhagen, Heiko
  • Stahlmann, Alexander

Abstract

A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream presentation of the input audio stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second playback stream presentation, wherein the transform parameters are determined by minimization of a measure of a difference between the approximation of the second playback stream presentation and the second playback stream presentation, and encoding the first playback stream presentation and the set of transform parameters for transmission to a decoder.

IPC Classes  ?

  • H04S 1/00 - Two-channel systems
  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

45.

SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS

      
Document Number 02994282
Status In Force
Filing Date 2016-08-03
Open to Public Date 2017-02-09
Grant Date 2020-07-21
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Yin, Peng
  • Lu, Taoran
  • Pytlarz, Jaclyn Anne

Abstract

In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

IPC Classes  ?

  • H04N 19/46 - Embedding additional information in the video signal during the compression process
  • H04N 19/117 - Filters, e.g. for pre-processing or post-processing
  • H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
  • H04N 19/85 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
  • H04N 19/98 - Adaptive-dynamic-range coding [ADRC]

46.

SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS

      
Document Number 03086441
Status In Force
Filing Date 2016-08-03
Open to Public Date 2017-02-09
Grant Date 2022-10-18
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Atkins, Robin
  • Lu, Taoran
  • Pytlarz, Jaclyn Anne
  • Yin, Peng

Abstract

86841344 ABSTRACT In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range. Date Recue/Date Received 2020-07-10

IPC Classes  ?

47.

DISPLAY MANAGEMENT FOR HIGH DYNAMIC RANGE VIDEO

      
Document Number 02973909
Status In Force
Filing Date 2016-01-14
Open to Public Date 2016-07-28
Grant Date 2017-12-19
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Atkins, Robin

Abstract

A display management processor receives an input image with enhanced dynamic range to be displayed on a target display which has a different dynamic range than a reference display. The input image is first transformed into a perceptually-quantized (PQ) color space, preferably the IPT-PQ color space. A color volume mapping function, which includes an adaptive tone-mapping function and an adaptive gamut mapping function, generates a mapped image. A detail-preservation step is applied to the intensity component of the mapped image to generate a final mapped image with a filtered tone-mapped intensity image. The final mapped image is then translated back to the display's preferred color space. Examples of the adaptive tone mapping and gamut mapping functions are provided.

IPC Classes  ?

  • H04N 1/60 - Colour correction or control
  • H04N 9/68 - Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits

48.

GENERATING BINAURAL AUDIO IN RESPONSE TO MULTI-CHANNEL AUDIO USING AT LEAST ONE FEEDBACK DELAY NETWORK

      
Document Number 02935339
Status In Force
Filing Date 2014-12-18
Open to Public Date 2015-07-09
Grant Date 2019-07-09
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yen, Kuan-Chieh
  • Breebaart, Dirk J.
  • Davidson, Grant A.
  • Wilson, Rhonda
  • Cooper, David M.
  • Shuang, Zhiwei

Abstract

In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

49.

GENERATING BINAURAL AUDIO IN RESPONSE TO MULTI-CHANNEL AUDIO USING AT LEAST ONE FEEDBACK DELAY NETWORK

      
Document Number 03148563
Status In Force
Filing Date 2014-12-18
Open to Public Date 2015-07-09
Grant Date 2022-10-18
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Breebaart, Dirk J.
  • Cooper, David M.
  • Davidson, Grant A.
  • Shuang, Zhiwei
  • Wilson, Rhonda
  • Yen, Kuan-Chieh

Abstract

In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

IPC Classes  ?

50.

GENERATING BINAURAL AUDIO IN RESPONSE TO MUTLI-CHANNEL AUDIO USING AT LEAST ONE FEEDBACK DELAY NETWORK

      
Document Number 03170723
Status In Force
Filing Date 2014-12-18
Open to Public Date 2015-07-09
Grant Date 2024-03-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yen, Kuan-Chieh
  • Breebaart, Dirk J.
  • Davidson, Grant A.
  • Wilson, Rhonda
  • Cooper, David M.
  • Shuang, Zhiwei

Abstract

In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

IPC Classes  ?

  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
  • H04S 1/00 - Two-channel systems

51.

GENERATING BINAURAL AUDIO IN RESPONSE TO MULTI-CHANNEL AUDIO USING AT LEAST ONE FEEDBACK DELAY NETWORK

      
Document Number 03226617
Status Pending
Filing Date 2014-12-18
Open to Public Date 2015-07-09
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yen, Kuan-Chieh
  • Breebaart, Dirk J.
  • Davidson, Grant A.
  • Wilson, Rhonda .
  • Cooper, David M.
  • Shuang, Zhiwei

Abstract

In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

IPC Classes  ?

  • H04S 3/02 - Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

52.

GENERATING BINAURAL AUDIO IN RESPONSE TO MULTI-CHANNEL AUDIO USING AT LEAST ONE FEEDBACK DELAY NETWORK

      
Document Number 03043057
Status In Force
Filing Date 2014-12-18
Open to Public Date 2015-07-09
Grant Date 2022-04-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yen, Kuan-Chieh
  • Breebaart, Dirk J.
  • Davidson, Grant A.
  • Wilson, Rhonda
  • Cooper, David M.
  • Shuang, Zhiwei

Abstract

In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
  • H04S 5/00 - Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation

53.

ADAPTIVE DIFFUSE SIGNAL GENERATION IN AN UPMIXER

      
Document Number 02924833
Status In Force
Filing Date 2014-09-26
Open to Public Date 2015-04-09
Grant Date 2018-09-25
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Seefeldt, Alan J.
  • Vinton, Mark S.
  • Brown, C. Phillip

Abstract

An audio processing system, such as an upmixer, may be capable of separating diffuse and non-diffuse portions of N input audio signals. The upmixer may be capable of detecting instances of transient audio signal conditions. During instances of transient audio signal conditions, the upmixer may be capable of adding a signal-adaptive control to a diffuse signal expansion process in which M audio signals are output. The upmixer may vary the diffuse signal expansion process over time such that during instances of transient audio signal conditions the diffuse portions of audio signals may be distributed substantially only to output channels spatially close to the input channels. During instances of non-transient audio signal conditions, the diffuse portions of audio signals may be distributed in a substantially uniform manner.

IPC Classes  ?

  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

54.

RENDERING OF MULTICHANNEL AUDIO USING INTERPOLATED MATRICES

      
Document Number 02923754
Status In Force
Filing Date 2014-09-26
Open to Public Date 2015-04-02
Grant Date 2018-07-10
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Law, Malcolm J.
  • Melkote, Vinay
  • Wilson, Rhonda
  • Plain, Simon
  • Jaspar, Andy

Abstract

Methods which uses interpolated primitive matrices to decode encoded audio to recover (losslessly) content of a multichannel audio program and/or to recover at least one downmix of such content, and encoding methods for generating such encoded audio. In some embodiments, a decoder performs interpolation on a set of seed primitive matrices to determine interpolated matrices for use in rendering channels of the program. Other aspects are a system or device configured to implement any embodiment of the method.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

55.

AUDIO ENCODER AND DECODER WITH PROGRAM INFORMATION OR SUBSTREAM STRUCTURE METADATA

      
Document Number 02898891
Status In Force
Filing Date 2014-06-12
Open to Public Date 2014-12-24
Grant Date 2016-04-19
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Riedmiller, Jeffrey
  • Ward, Michael

Abstract

Apparatus and methods for generating an encoded audio bitstream, including by including substream structure metadata (SSM) and/or program information metadata (PIM) and audio data in the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, and an audio processing unit (e.g., an encoder, decoder, or post-processor) configured (e.g., programmed) to perform any embodiment of the method or which includes a buffer memory which stores at least one frame of an audio bitstream generated in accordance with any embodiment of the method.

IPC Classes  ?

  • H04H 20/95 - Arrangements characterised by special technical features of the broadcast information, e.g. signal form or information format characterised by a specific format, e.g. MP3 [MPEG-1 Audio Layer 3]
  • H04H 60/74 - Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information using programme related information, e.g. title, composer or interpreter

56.

MULTI-HALF-TONE IMAGING AND DUAL MODULATION PROJECTION/DUAL MODULATION LASER PROJECTION

      
Document Number 02909635
Status In Force
Filing Date 2014-04-14
Open to Public Date 2014-11-13
Grant Date 2018-06-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Richards, Martin J.
  • Shields, Jerome

Abstract

Smaller halftone tiles are implemented on a first modulator of a dual modulation projection system. This techniques uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to effectively increase the number of levels provided by a given tile size in the halftone modulator. It addresses the issue of reduced contrast ratio at low light levels for small tile sizes and allows the use of smaller PSFs which reduce halo artifacts in the projected image and may be utilized in 3D projecting and viewing.

IPC Classes  ?

  • G09G 3/30 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels
  • G02F 1/1333 - Constructional arrangements
  • G03B 21/14 - Projectors or projection-type viewers; Accessories therefor - Details

57.

MULTI-HALF-TONE IMAGING AND DUAL MODULATION PROJECTION/DUAL MODULATION LASER PROJECTION

      
Document Number 03002343
Status In Force
Filing Date 2014-04-14
Open to Public Date 2014-11-13
Grant Date 2021-08-17
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Richards, Martin J.
  • Shields, Jerome

Abstract

Smaller halftone tiles are implemented on a ast modulator of a dual modulation projection system. This techniques uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to effectively increase the number of levels provided by a given tile size in the halftone modulator. It addresses the issue of reduced contrast ratio at low light levels for small tile sizes and allows the use of smaller PSFs which reduce halo artifacts in the projected image and may be utilized in 3D projecting and viewing.

IPC Classes  ?

  • G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
  • G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
  • H04N 5/74 - Projection arrangements for image reproduction, e.g. using eidophor

58.

MULTI-HALF-TONE IMAGING AND DUAL MODULATION PROJECTION/DUAL MODULATION LASER PROJECTION

      
Document Number 03123801
Status In Force
Filing Date 2014-04-14
Open to Public Date 2014-11-13
Grant Date 2024-02-20
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Richards, Martin J.
  • Shields, Jerome

IPC Classes  ?

  • G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
  • G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
  • H04N 5/74 - Projection arrangements for image reproduction, e.g. using eidophor

59.

COMPANDING APPARATUS AND METHOD TO REDUCE QUANTIZATION NOISE USING ADVANCED SPECTRAL EXTENSION

      
Document Number 02900724
Status In Force
Filing Date 2014-04-01
Open to Public Date 2014-10-09
Grant Date 2016-09-13
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Hedelin, Per
  • Biswas, Arijit
  • Schug, Michael
  • Melkote, Vinay

Abstract

Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuating segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.

IPC Classes  ?

  • G10L 21/034 - Automatic adjustment
  • H03G 3/24 - Control dependent upon ambient noise level or sound level
  • G03G 7/00 - Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
  • H04B 1/64 - Volume compression or expansion arrangements

60.

RENDERING OF AUDIO OBJECTS WITH APPARENT SIZE TO ARBITRARY LOUDSPEAKER LAYOUTS

      
Document Number 02898885
Status In Force
Filing Date 2014-03-10
Open to Public Date 2014-10-02
Grant Date 2016-05-10
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Mateos Sole, Antonio
  • Tsingos, Nicolas R.

Abstract

Multiple virtual source locations may be defined for a volume within which audio objects can move. A set-up process for rendering audio data may involve receiving reproduction speaker location data and pre-computing gain values for each of the virtual sources according to the reproduction speaker location data and each virtual source location. The gain values may be stored and used during "run time," during which audio reproduction data are rendered for the speakers of the reproduction environment. During run time, for each audio object, contributions from virtual source locations within an area or volume defined by the audio object position data and the audio object size data may be computed. A set of gain values for each output channel of the reproduction environment may be computed based, at least in part, on the computed contributions. Each output channel may correspond to at least one reproduction speaker of the reproduction environment.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

61.

AUDIO SIGNAL ENHANCEMENT USING ESTIMATED SPATIAL PARAMETERS

      
Document Number 02898271
Status In Force
Filing Date 2014-01-22
Open to Public Date 2014-08-21
Grant Date 2019-02-19
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Fellers, Matthew
  • Melkote, Vinay
  • Yen, Kuan-Chieh
  • Davidson, Grant A.
  • Davis, Mark F.

Abstract

Received audio data may include a first set of frequency coefficients and a second set of frequency coefficients. Spatial parameters for at least part of the second set of frequency coefficients may be estimated, based at least in part on the first set of frequency coefficients. The estimated spatial parameters may be applied to the second set of frequency coefficients to generate a modified second set of frequency coefficients. The first set of frequency coefficients may correspond to a first frequency range (for example, an individual channel frequency range) and the second set of frequency coefficients may correspond to a second frequency range (for example, a coupled channel frequency range). Combined frequency coefficients of a composite coupling channel may be based on frequency coefficients of two or more channels. Cross-correlation coefficients, between frequency coefficients of a first channel and the combined frequency coefficients, may be computed.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

62.

AUDIO ENCODER AND DECODER WITH PROGRAM LOUDNESS AND BOUNDARY METADATA

      
Document Number 02888350
Status In Force
Filing Date 2014-01-15
Open to Public Date 2014-07-24
Grant Date 2016-04-19
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Grant, Michael
  • Norcross, Scott Gregory
  • Riedmiller, Jeffrey
  • Ward, Michael

Abstract

Apparatus and methods for generating an encoded audio bitstream, including by including program loudness metadata and audio data in the bitstream, and optionally also program boundary metadata in at least one segment (e.g., frame) of the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, e.g., including by performing adaptive loudness processing of the audio data of an audio program indicated by the bitstream, or authentication and/or validation of metadata and/or audio data of such an audio program. Another aspect is an audio processing unit (e.g., an encoder, decoder, or post-processor) configured (e.g., programmed) to perform any embodiment of the method or which includes a buffer memory which stores at least one frame of an audio bitstream generated in accordance with any embodiment of the method.

IPC Classes  ?

63.

VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDERING USING UPWARD FIRING DRIVERS

      
Document Number 02894883
Status In Force
Filing Date 2014-01-07
Open to Public Date 2014-07-10
Grant Date 2019-02-05
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Crockett, Brett G.
  • Chabanne, Christophe
  • Tuffy, Mark
  • Seefeldt, Alan J.
  • Brown, C. Phillip
  • Turnmire, Patrick

Abstract

Embodiments are directed to speakers and circuits that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. The speaker comprises upward firing drivers to reflect sound off of the upper surface and represents a virtual height speaker. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the upward-firing driver.

IPC Classes  ?

  • H04R 1/26 - Spatial arrangement of separate transducers responsive to two or more frequency ranges
  • H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
  • H04R 3/14 - Cross-over networks
  • H04R 5/02 - Spatial or constructional arrangements of loudspeakers

64.

INTER-LAYER REFERENCE PICTURE PROCESSING FOR CODING-STANDARD SCALABILITY

      
Document Number 02884500
Status In Force
Filing Date 2013-09-24
Open to Public Date 2014-04-03
Grant Date 2017-09-05
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Yin, Peng
  • Lu, Taoran
  • Chen, Tao

Abstract

Video data are coded in a coding-standard layered bit stream. Given a base layer (BL) and one or more enhancement layer (EL) signals, the BL signal is coded into a coded BL stream using a BL encoder which is compliant to a first coding standard. In response to the BL signal and the EL signal, a reference processing unit (RPU) determines RPU processing parameters. In response to the RPU processing parameters and the BL signal, the RPU generates an inter-layer reference signal. Using an EL encoder which is compliant to a second coding standard, the EL signal is coded into a coded EL stream, where the encoding of the EL signal is based at least in part on the inter-layer reference signal. Receivers with an RPU and video decoders compliant to both the first and the second coding standards may decode both the BL and the EL coded streams.

IPC Classes  ?

  • H04N 19/33 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain
  • H04N 19/12 - Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
  • H04N 19/187 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scalable video layer
  • H04N 19/40 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
  • H04N 19/46 - Embedding additional information in the video signal during the compression process
  • H04N 19/61 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
  • H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
  • H04N 19/85 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression

65.

MULTISTAGE IIR FILTER AND PARALLELIZED FILTERING OF DATA WITH SAME

      
Document Number 02872262
Status In Force
Filing Date 2013-04-17
Open to Public Date 2013-11-14
Grant Date 2017-01-03
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Rathi, Khushbu P.

Abstract

In some embodiments, a multistage filter whose biquad filter stages are combined with latency between the stages, a system (e.g., an audio encoder or decoder) including such a filter, and methods for multistage biquad filtering. In typical embodiments, all biquad filter stages of the filter are operable independently to perform fully parallelized processing of data. In some embodiments, the inventive multistage filter includes a buffer memory, at least two biquad filter stages, and a controller coupled and configured to assert a single stream of instructions to the filter stages. Typically, the multistage filter is configured to perform multistage filtering of a block of input samples in a single processing loop with iteration over a sample index but without iteration over a biquadratic filter stage index.

IPC Classes  ?

66.

METHOD AND SYSTEM FOR HEAD-RELATED TRANSFER FUNCTION GENERATION BY LINEAR MIXING OF HEAD-RELATED TRANSFER FUNCTIONS

      
Document Number 02866309
Status In Force
Filing Date 2013-03-21
Open to Public Date 2013-09-26
Grant Date 2017-07-11
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Mcgrath, David S.

Abstract

A method for performing linear mixing on coupled Head-related transfer functions (HRTFs) to determine an interpolated HRTF for any specified arrival direction in a range (e.g., a range spanning at least 60 degrees in a plane, or a full range of 360 degrees in a plane), where the coupled HRTFs have been predetermined to have properties such that linear mixing can be performed thereon (to generate interpolated HRTFs) without introducing significant comb filtering distortion. In some embodiments, the method includes steps of: in response to a signal indicative of a specified arrival direction, performing linear mixing on data indicative of coupled HRTFs of a coupled HRTF set to determine an HRTF for the specified arrival direction; and performing HRTF filtering on an audio input signal using the HRTF for the specified arrival direction.

IPC Classes  ?

  • H04S 1/00 - Two-channel systems
  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

67.

METHOD AND SYSTEM FOR ENCODING AUDIO DATA WITH ADAPTIVE LOW FREQUENCY COMPENSATION

      
Document Number 02858663
Status In Force
Filing Date 2012-09-25
Open to Public Date 2013-07-18
Grant Date 2017-03-14
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Biswas, Arijit
  • Melkote, Vinay
  • Schug, Michael
  • Davidson, Grant A.
  • Vinton, Mark S.

Abstract

A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values, including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data, but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.

IPC Classes  ?

  • G10L 19/032 - Quantisation or dequantisation of spectral components
  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

68.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 02854071
Status In Force
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Grant Date 2017-05-30
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.

IPC Classes  ?

  • G06F 3/14 - Digital output to display device
  • G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

69.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03114448
Status In Force
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Grant Date 2023-06-27
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is con- figured to receive reference encodal image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is ba.sed on perceptual non- linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specitic code valucs are configured to pro- duce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device- specific code values. W() 2013/086169 A1 111111 10 1 i 0 EE 10111 1111111111 10 1010111111E11 11111011E01 110E1 1 111111111111 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Published: EE, ES, Ft, FR, GB, GR, HR, HU, IE, LS, IT, LT, LU, with international search report (Art. 21(3)) LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BE, BJ, CF, CG, CI, CM, GA, GN, GQ, ~ before the aspiration of the time limit for amending the GW, ML, MR, NE, SN, TD, TG). claims and to be republished in the event of receipt of amendments (Rule 48.2(11)) Declarations under Rule 4.17: ~ as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) Date Recue/Date Received 2021-04-07

IPC Classes  ?

  • G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
  • G06T 9/00 - Image coding
  • G09G 5/10 - Intensity circuits

70.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03198207
Status In Force
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Grant Date 2023-12-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is con- figured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is bascd on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between thc reference code values and device-specific codc values of the imaging device. The device-specific code values are configured to pro- duce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode thc reference cncodcd image data into device-specific image data, which is encoded with the device- specific code values. WO 2013/086169 Al 111111 IMMO 111111 11111 11111 1111 101 l II 11111 1111 11111 11111 11111 1111 Mill 11 DEMI TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Published: EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, ~ with international search report (Art. 21(3)) LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, ~ before the expiration of the time limit for amending the GW, ML, MR, NE, SN, TD, TG). claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) Declarations under Rule 4.17: ~ as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) Date Recite/Date Received 2023-04-27

IPC Classes  ?

  • G09G 5/10 - Intensity circuits
  • G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed

71.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03218784
Status Pending
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is con- figured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is bascd on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between thc reference code values and device-specific codc values of the imaging device. The device-specific code values are configured to pro- duce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode thc reference cncodcd image data into device-specific image data, which is encoded with the device- specific code values. WO 2013/086169 A1 11111111111111011111111111111111111111111111111111111111 MI 0111 11111 11111111111111111111111 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Published: EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, ¨ with international search report (Art. 21(3)) LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, ¨ before the expiration of the time limit for amending the GW, ML, MR, NE, SN, TD, TG). claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) Declarations under Rule 4.17: ¨ as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) Date Recue/Date Received 2023-11-03

72.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 02933940
Status In Force
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Grant Date 2018-07-17
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gay levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.

IPC Classes  ?

73.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03006841
Status In Force
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Grant Date 2021-06-01
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.

IPC Classes  ?

  • G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
  • H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
  • H04N 19/42 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
  • G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals

74.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03114379
Status In Force
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Grant Date 2023-06-27
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is con- figured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The retrence code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision aitapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to pro- duce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device- specific code values.

IPC Classes  ?

  • G09G 5/10 - Intensity circuits
  • G06T 9/00 - Image coding
  • G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed

75.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03219049
Status Pending
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is con- figured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is bascd on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between thc reference code values and device-specific codc values of the imaging device. The device-specific code values are configured to pro- duce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode thc reference cncodcd image data into device-specific image data, which is encoded with the device- specific code values. WO 2013/086169 A1 11111111111111011111111111111111111111111111111111111111 MI 0111 11111 11111111111111111111111 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Published: EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, ¨ with international search report (Art. 21(3)) LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, ¨ before the expiration of the time limit for amending the GW, ML, MR, NE, SN, TD, TG). claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) Declarations under Rule 4.17: ¨ as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) Date Recue/Date Received 2023-11-03

76.

DEVICE AND METHOD OF IMPROVING THE PERCEPTUAL LUMINANCE NONLINEARITY - BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES

      
Document Number 03198226
Status Pending
Filing Date 2012-12-06
Open to Public Date 2013-06-13
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Miller, Jon Scott
  • Daly, Scott
  • Nezamabadi, Mahdi
  • Atkins, Robin

Abstract

A handheld imaging device has a data receiver that is con- figured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is bascd on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between thc reference code values and device-specific codc values of the imaging device. The device-specific code values are configured to pro- duce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode thc reference cncodcd image data into device-specific image data, which is encoded with the device- specific code values. WO 2013/086169 Al 111111 IMMO 111111 11111 11111 1111 101 l II 11111 1111 11111 11111 11111 1111 Mill 11 DEMI TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Published: EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, ¨ with international search report (Art. 21(3)) LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, ¨ before the expiration of the time limit for amending the GW, ML, MR, NE, SN, TD, TG). claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) Declarations under Rule 4.17: ¨ as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) Date Recite/Date Received 2023-04-27

IPC Classes  ?

  • G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
  • G06F 3/14 - Digital output to display device
  • G06T 7/00 - Image analysis
  • G06T 9/00 - Image coding

77.

SYSTEM AND METHOD FOR ADAPTIVE AUDIO SIGNAL GENERATION, CODING AND RENDERING

      
Document Number 02973703
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2022-06-21
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Robinson, Charles Q.
  • Tsingos, Nicolas R.
  • Chabanne, Christophe

Abstract

Embodiments are described for an adaptive audio system that processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that spe- cifies whether the stream is a channel-based or object-based stream. Channel- based streams have rendering informatiott encoded by tneans of channel name; and the object-based streams have location information encoded through location expressions encoded in the associated metadata. A codec packages the independent audio streams into a single serial bitstream that contains all of the audio data. This configuration allows for the sound to be rendered according to an allocentric frame of reference, in which the render- ing location of a sound is based on the characteristics of the playback envir- onment (e.g., room size, shape, etc.) to correspond to the mixer's intent. The object position metadata contains the appropriate allocentric frame of refer- ence information required to play the sound correctly using the available speaker positions in a room that is set up to play the adaptive audio content.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
  • H04N 21/854 - Content authoring

78.

SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING

      
Document Number 03025104
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2020-07-07
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tsingos, Nicolas R.
  • Robinson, Charles Q.
  • Scharpf, Jurgen W.

Abstract

Improved tools for authoring and rendering audio reproduction data are provided. Some such authoring tools allow audio reproduction data to be generalized for a wide variety of reproduction environments. Audio reproduction data may be authored by creating metadata for audio objects. The metadata may be created with reference to speaker zones, During the rendering process, the audio reproduction data may be reproduced according to the reproduction speaker layout of a particular reproduction environment.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
  • H04R 3/02 - Circuits for transducers for preventing acoustic reaction

79.

SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING

      
Document Number 03134353
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2022-05-24
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tsingos, Nicolas R.
  • Robinson, Charles Q.
  • Scharpf, Jurgen W.

IPC Classes  ?

  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

80.

SYSTEM AND METHOD FOR ADAPTIVE AUDIO SIGNAL GENERATION, CODING AND RENDERING

      
Document Number 02837893
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2017-08-29
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Robinson, Charles Q.
  • Tsingos, Nicolas R.
  • Chabanne, Christophe

Abstract

Embodiments are described for an adaptive audio system that processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that specifies whether the stream is a channel-based or object-based stream. Channel-based streams have rendering information encoded by means of channel name; and the object-based streams have location information encoded through location expressions encoded in the associated metadata. A codec packages the independent audio streams into a single serial bitstream that contains all of the audio data. This configuration allows for the sound to be rendered according to an allocentric frame of reference, in which the rendering location of a sound is based on the characteristics of the playback environment (e.g., room size, shape, etc.) to correspond to the mixer's intent. The object position metadata contains the appropriate allocentric frame of reference information required to play the sound correctly using the available speaker positions in a room that is set up to play the adaptive audio content.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

81.

SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING

      
Document Number 02837894
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2019-01-15
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tsingos, Nicolas R.
  • Robinson, Charles Q.
  • Scharpf, Jurgen W.

Abstract

Improved tools for authoring and rendering audio reproduction data are provided. Some such authoring tools allow audio reproduction data to be generalized for a wide variety of reproduction environments. Audio reproduction data may be authored by creating metadata for audio objects. The metadata may be created with reference to speaker zones. During the rendering process, the audio reproduction data may be reproduced according to the reproduction speaker layout of a particular reproduction environment.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

82.

SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING

      
Document Number 03083753
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2021-02-02
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Tsingos, Nicolas R.
  • Robinson, Charles Q.
  • Scharpf, Jurgen W.

Abstract

Improved tools for authoring and rendering audio reproduction data are provided. Some such authoring tools allow audio reproduction data to be generalized for a wide variety of reproduction environments. Audio reproduction data may be authored by creating metadata for audio objects. The metadata may be created with reference to speaker zones. During the rendering process, the audio reproduction data may be reproduced according to the reproduction speaker layout of a particular reproduction environment.

IPC Classes  ?

  • H04R 3/02 - Circuits for transducers for preventing acoustic reaction
  • H04R 5/02 - Spatial or constructional arrangements of loudspeakers

83.

SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING

      
Document Number 03104225
Status In Force
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Grant Date 2021-10-12
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Robinson, Charles Q.
  • Scharpf, Jurgen W.
  • Tsingos, Nicolas R.

Abstract

: Improved tools for authoring and rendering audio reproduction data are provided. Some such authoring tools allow audio reproduction data to be generalized for a wide variety of reproduction environments. Audio reproduction data may be authored by creating metadata for audio objects. The metadata may be created with reference to speaker zones. During the rendering process, the audio reproduction data may be reproduced according to the reproduction speaker layout of a particular reproduction environ- ment. WO 2013/006330 A2111111 10 1 E 0 11111 010 1E1 111110 1010 110 11 11 1011 01111111110 1 EEI 11 01 IIE Published: ¨ as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) ¨ without international search report and to be republished ¨ of inventorship (Rule 4.17(iv)) upon receipt of that report (Rule 48.2(g)) Date Recue/Date Received 2021-04-20

IPC Classes  ?

  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

84.

SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING

      
Document Number 03151342
Status Pending
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Robinson, Charles Q.
  • Scharpf, Jurgen W.
  • Tsingos, Nicolas R.

Abstract

Improved tools for authoring and rendering audio reproduction data are provided. Some such authoring tools allow audio reproduction data to be generalized for a wide variety of reproduction environments. Audio reproduction data may be authored by creating metadata for audio objects. The metadata may be created with reference to speaker zones. During the rendering process, the audio reproduction data may be reproduced according to the reproduction speaker layout of a particular reproduction environment.

IPC Classes  ?

  • H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control

85.

SYSTEM AND METHOD FOR ADAPTIVE AUDIO SIGNAL GENERATION, CODING AND RENDERING

      
Document Number 03157717
Status Pending
Filing Date 2012-06-27
Open to Public Date 2013-01-10
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Robinson, Charles Q.
  • Tsingos, Nicolas R.
  • Chabanne, Christophe

Abstract

. : Embodiments are described for an adaptive audio system that . processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that spe- cifies whether the stream is a channel-based or object-based stream. Channel- based streams have rendering information encoded by means of channel name; and the object-based streams have location information encoded through location expressions encoded in the associated metadata. A codec packages the independent audio streams into a single serial bitstream that contains all of the audio data. This configuration allows for the sound to be rendered according to an allocentric frame of reference, in which the render- ing location of a sound is based on the characteristics of the playback envir- onment (e.g., room size, shape, etc.) to correspond to the mixer's intent. The object position metadata contains the appropriate allocentric frame of refer- ence information required to play the sound correctly using the available speaker positions in a room that is set up to play the adaptive audio content.

IPC Classes  ?

  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
  • H04N 21/854 - Content authoring

86.

RECONSTRUCTING AUDIO SIGNALS WITH MULTIPLE DECORRELATION TECHNIQUES

      
Document Number 03026276
Status In Force
Filing Date 2005-02-28
Open to Public Date 2012-12-27
Grant Date 2019-04-16
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Davis, Mark Franklin

Abstract

Systems and methods of audio signal processing are provided that relate to improved upmixing, whereby N audio channels are derived from M audio channels, a decorrelated version of the M audio channels and a set of spatial parameters. The set of spatial parameters includes an amplitude parameter, a correlation parameter and a phase parameter. The M audio channels are decorrelated using multiple decorrelation techniques to obtain the decorrelated version of the M audio channels. This can be used, for example, for generating an N audio channel upmix.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 21/0232 - Processing in the frequency domain

87.

RECONSTRUCTING AUDIO SIGNALS WITH MULTIPLE DECORRELATION TECHNIQUES

      
Document Number 03035175
Status In Force
Filing Date 2005-02-28
Open to Public Date 2012-12-27
Grant Date 2020-02-25
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Davis, Mark Franklin

Abstract

Systems and methods of audio signal processing are provided that relate to improved Upmixing, whereby N audio channels are derived from M audio channels, a decorrelated version of the M audio channels and a set of spatial parameters. The set of spatial parameters includes an amplitude parameter, a correlation parameter and a phase parameter. The M audio channels are decorrelated using multiple decorrelation techniques to obtain the decorrelated version of the M audio channels. This can be used, for example, for generating an N audio channel upmix.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
  • H04S 1/00 - Two-channel systems

88.

ENCODING, DECODING, AND REPRESENTING HIGH DYNAMIC RANGE IMAGES

      
Document Number 02830678
Status In Force
Filing Date 2012-04-16
Open to Public Date 2012-10-18
Grant Date 2018-05-22
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Jia, Wenhui
  • Ninan, Ajit
  • Ten, Arkady
  • Ward, Gregory John
  • Wang, Gaven

Abstract

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.

IPC Classes  ?

89.

ENCODING, DECODING, AND REPRESENTING HIGH DYNAMIC RANGE IMAGES

      
Document Number 03000434
Status In Force
Filing Date 2012-04-16
Open to Public Date 2012-10-18
Grant Date 2020-12-15
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Jia, Wenhui
  • Ninan, Ajit
  • Ten, Arkady
  • Ward, Gregory John
  • Wang, Gaven

IPC Classes  ?

90.

REDUCED COMPLEXITY TRANSFORM FOR A LOW-FREQUENCY-EFFECTS CHANNEL

      
Document Number 02826018
Status In Force
Filing Date 2012-03-19
Open to Public Date 2012-10-04
Grant Date 2016-05-17
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Fellers, Matthew C.

Abstract

The computational resources that are needed to apply a transform-based filterbank to a limited-bandwidth audio signals are reduced by performing an integrated process of combining real-valued input data into complex-valued data and applying a short transform to the complex-valued data, applying a bank of very short transforms to the output of the integrated process, and deriving a sequence of real-valued output data from the outputs of the bank of very short transforms.

IPC Classes  ?

  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
  • G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

91.

METHODS AND SYSTEMS FOR GENERATING FILTER COEFFICIENTS AND CONFIGURING FILTERS

      
Document Number 02823262
Status In Force
Filing Date 2012-02-08
Open to Public Date 2012-08-23
Grant Date 2018-03-06
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor Davis, Mark F.

Abstract

Methods for generating a palette of feedback (IIR) filter coefficient sets and using the palette to configure (e.g., adaptively update) a prediction filter which includes a feedback filter, and a system for performing any of the methods. Examples of the system include an encoder, including a prediction filter and configured to encode data indicative of a waveform signal (e.g., samples of an audio signal), and a decoder. In some embodiments, the prediction filter is included in an encoder operable to generate (and assert to a decoder) encoded data including filter coefficient data indicative of the selected IIR coefficient set with which the prediction filter was configured during generation of the encoded data. In some embodiments, the timing with which adaptive updating of prediction filter configuration occurs or is allowed to occur is constrained (e.g., to optimize efficiency of prediction encoding).

IPC Classes  ?

  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

92.

ADAPTIVE PROCESSING WITH MULTIPLE MEDIA PROCESSING NODES

      
Document Number 02998405
Status In Force
Filing Date 2011-12-01
Open to Public Date 2012-06-07
Grant Date 2023-12-05
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Riedmiller, Jeffrey
  • Radhakrishnan, Regunathan
  • Pribadi, Marvin
  • Farahani, Farhad
  • Smithers, Michael

Abstract

Audio decoding methods and systems obtain an encoded bitstream that includes audio data and signaling data. The signaling data can indicate that a loudness value is included in the encoded bitstream. An audio decoder obtains the loudness value from the encoded bitstream, determines, from the signaling data, whether sample peak data is included in the encoded bitstream, and determines, from the signaling data, whether true peak data is included in the encoded bitstream, in accordance with the encoded bitstream including sample peak data. The audio decoder obtains the sample peak data from the encoded bitstream. In accordance with the encoded bitstream including true peak data, the audio decoder obtains the true peak data from the encoded bitstream. The audio decoder processes the audio data according to the loudness value and one of the sample peak data or the true peak data.

IPC Classes  ?

  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
  • G10L 21/0324 - Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude - Details of processing therefor
  • G10L 25/21 - Speech or voice analysis techniques not restricted to a single one of groups characterised by the type of extracted parameters the extracted parameters being power information

93.

ADAPTIVE PROCESSING WITH MULTIPLE MEDIA PROCESSING NODES

      
Document Number 03216692
Status Pending
Filing Date 2011-12-01
Open to Public Date 2012-06-07
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Riedmiller, Jeffrey
  • Radhakrishnan, Regunathan
  • Pribadi, Marvin
  • Farahani, Farhad
  • Smithers, Michael

Abstract

Audio decoding methods and systems obtain an encoded bitstream that includes audio data and signaling data. The signaling data can indicate that a loudness value is included in the encoded bitstream. An audio decoder obtains the loudness value from the encoded bitstream, determines, from the signaling data, whether sample peak data is included in the encoded bitstream, and determines, from the signaling data, whether true peak data is included in the encoded bitstream, in accordance with the encoded bitstream including sample peak data. The audio decoder obtains the sample peak data from the encoded bitstream. In accordance with the encoded bitstream including true peak data, the audio decoder obtains the true peak data from the encoded bitstream. The audio decoder processes the audio data according to the loudness value and one of the sample peak data or the true peak data.

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

94.

ADAPTIVE PROCESSING WITH MULTIPLE MEDIA PROCESSING NODES

      
Document Number 02816889
Status In Force
Filing Date 2011-12-01
Open to Public Date 2012-06-07
Grant Date 2018-05-01
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Riedmiller, Jeffrey
  • Radhakrishnan, Regunathan
  • Pribadi, Marvin
  • Farahani, Farhad
  • Smithers, Michael

Abstract

Techniques for adaptive processing of media data based on separate data specifying a state of the media data are provided. A device in a media processing chain may determine whether a type of media processing has already been performed on an input version of media data. If so, the device may adapt its processing of the media data to disable performing the type of media processing. If not, the device performs the type of media processing. The device may create a state of the media data specifying the type of media processing. The device may communicate the state of the media data and an output version of the media data to a recipient device in the media processing chain, for the purpose of supporting the recipient device's adaptive processing of the media data.

IPC Classes  ?

  • G10L 21/00 - Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility

95.

DOWNMIX LIMITING

      
Document Number 02815190
Status In Force
Filing Date 2011-11-10
Open to Public Date 2012-05-18
Grant Date 2017-06-20
Owner DOLBY LABORATORIES LICENSING CORPORATION (USA)
Inventor
  • Wilson, Rhonda
  • Ward, Michael
  • Venezia, Steven
  • Dressler, Roger

Abstract

The invention relates to downmixing techniques by which output audio signals are obtained from input audio signals partitioned into subgroups. A variable common gain limiting factor is applied to all downmix coefficients that govern the contributions from the input signals in a subgroup. While preserving the proportions between signal values within a subgroup, the invention makes it possible to limit the gain of different input signal subgroups to different extents, so that relatively more perceptible signals can be limited relatively less. It then becomes possible to achieve a consistent dialogue level while transitioning in a less perceptible fashion between signal portions with and without gain limiting. Embodiments of the invention include a method, a mixing system and a computer-program product.

IPC Classes  ?

  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

96.

AUDIO STREAM MIXING WITH DIALOG LEVEL NORMALIZATION

      
Document Number 02809040
Status In Force
Filing Date 2011-09-06
Open to Public Date 2012-03-29
Grant Date 2016-05-24
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Groeschel, Alexander
  • Williams, Phillip A.
  • Cooper, Jarret A.
  • Schildbach, Wolfgang A.

Abstract

A method for mixing of audio signals that allows maintaining of a consistent perceived sound level for the mixed signal by holding the sound level of the dominant signal in the mix constant by adjusting the sound level of the non-dominant signal(s) in relation to the dominant signal. It further includes receiving of a mixing balance input, which denotes the adjustable balance between the main and associated signals. It further includes identification of the dominant signal from the mixing balance input and mixing metadata, from which an appropriate scale factor for the non-dominant signal may also be determined directly from the scaling information, without the need for any analysis or measurement of the audio signals to be mixed. It further includes scaling the non-dominant signal in relation to the dominant signal and combining the scaled non-dominant signal with the dominant signal into a mixed signal.

IPC Classes  ?

  • H03G 3/00 - Gain control in amplifiers or frequency changers

97.

AUDIO DECODER AND DECODING METHOD USING EFFICIENT DOWNMIXING

      
Document Number 02757643
Status In Force
Filing Date 2011-02-03
Open to Public Date 2011-08-25
Grant Date 2013-01-08
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Thesing, Robin
  • Silva, James M.
  • Andersen, Robert L.

Abstract

A method, an apparatus, a computer readable storage medium configured with instructions for carrying out a method, and logic encoded in one or more computer- readable tangible medium to carry out actions. The method is to decode audio data that includes N.n channels to M.m decoded audio channels, including unpacking metadata and unpacking and decoding frequency domain exponent and mantissa data; determining transform coefficients from the unpacked and decoded frequency domain exponent and mantissa data; inverse transforming the frequency domain data; and in the case M

IPC Classes  ?

  • G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
  • H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

98.

AUDIO DECODER AND DECODING METHOD USING EFFICIENT DOWNMIXING

      
Document Number 02794029
Status In Force
Filing Date 2011-02-03
Open to Public Date 2011-08-25
Grant Date 2018-07-17
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Thesing, Robin
  • Silva, James M.
  • Andersen, Robert L.

Abstract

A method, an apparatus, a computer readable storage medium configured with instructions for carrying out a method, and logic encoded in one or more computer-readable tangible medium to carry out actions. The method is to decode audio data that includes N.n channels to M.m decoded audio channels, including unpacking metadata and unpacking and decoding frequency domain exponent and mantissa data; determining transform coefficients from the unpacked and decoded frequency domain exponent and mantissa data; inverse transforming the frequency domain data; and in the case M < N, downmixing according to downmixing data, the downmixing carried out efficiently.

IPC Classes  ?

  • G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

99.

SYSTEM AND METHOD FOR NON-DESTRUCTIVELY NORMALIZING LOUDNESS OF AUDIO SIGNALS WITHIN PORTABLE DEVICES

      
Document Number 03114177
Status In Force
Filing Date 2011-02-03
Open to Public Date 2011-08-18
Grant Date 2023-08-01
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Riedmiller, Jeffrey C.
  • Mundt, Harald H.
  • Schug, Michael
  • Wolters, Martin

Abstract

Many portable playback devices cannot decode and playback encoded audio content having wide bandwidth and wide dynamic range with consistent loudness and intelligibility unless the encoded audio content has been prepared specially for these devices. This problem can be overcome by including with the encoded content some metadata that specifies a suitable dynamic range compression profile by either absolute values or differential values relative to another known compression profile. A playback device may also adaptively apply gain and limiting to the playback audio. Implementations in encoders, in transcoders and in decoders are disclosed.

IPC Classes  ?

  • G10L 19/16 - Vocoder architecture
  • G10L 19/032 - Quantisation or dequantisation of spectral components
  • H03G 7/00 - Volume compression or expansion in amplifiers

100.

SYSTEM AND METHOD FOR NON-DESTRUCTIVELY NORMALIZING LOUDNESS OF AUDIO SIGNALS WITHIN PORTABLE DEVICES

      
Document Number 02787466
Status In Force
Filing Date 2011-02-03
Open to Public Date 2011-08-18
Grant Date 2016-04-05
Owner
  • DOLBY LABORATORIES LICENSING CORPORATION (USA)
  • DOLBY INTERNATIONAL AB (Ireland)
Inventor
  • Riedmiller, Jeffrey C.
  • Mundt, Harald H.
  • Schug, Michael
  • Wolters, Martin

Abstract

Many portable playback devices cannot decode and playback encoded audio content having wide bandwidth and wide dynamic range with consistent loudness and intelligibility unless the encoded audio content has been prepared specially for these devices. This problem can be overcome by including with the encoded content some metadata that specifies a suitable dynamic range compression profile by either absolute values or differential values relative to another known compression profile. A playback device may also adaptively apply gain and limiting to the playback audio. Implementations in encoders, in transcoders and in decoders are disclosed.

IPC Classes  ?

  • H03M 7/30 - Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
  • H04N 21/439 - Processing of audio elementary streams
  1     2        Next Page