In particular embodiments, to generate two videos corresponding to the two views of a human from the single video, multiple neural networks may be used to process a 2D video of a human in motion. Initially, a video of a person may be captured by a standard video camera. The video may comprise a plurality of frames including RGB images of the person. A computing system may process these images to generate the two videos corresponding to the two views of a human. As an example and not by way of limitation, an artificial reality headset may process these images to generate a mapping between the RGB pixels of each of the images to a 3D surface-based model of body part of the person. In order to generate the mapping, the artificial reality headset may use a mapping machine-learning model to process one of the RGB images to generate the mapping between pixels of the single RGB image to the 3D surface-based model of body part of the person.A machine-learning model may be used to refine the 3D surface-based model into a refined 3D surface- based model. The refined 3D surface-based model is then used to warp the single RGB image that was used to generate the 3D surface- based model to generate a texture of the person. The texture may then be used as an input to a full texture machine-learning model that generates a full-body UV texture from the partial texture generated by the warped RGB images. The full texture machine-learning model may be used to inpaint regions that are not seen or are self-occluded areas. As an example and not by way of limitation, if the partial texture generated by the warped RGB images have a partial texture of a person's hands, then the full texture machine-learning model may inpaint the region corresponding to the person's hands to generate a complete texture of the person's hands. After generating the full texture using the full texture machine-learning model, the artificial reality headset may then use a view generation machine- learning model to generate two different views of the person using the refined 3D surface-based model. That is, the view generation machine-learning model may generate a left eye refined 3D surface- based model and a right eye refined 3D surface-based model. The complete texture generated from the full texture machine-learning model may then be warped onto the left eye refined 3D surface-based model and the right eye refined 3D surface-based model. A neural Tenderer machine-learning model may then be applied to the warped left and right images to fill in missing pixel information to generate the stereo pair of images of the person. This method of generating a stereo pair of images and/or an image at a virtual viewpoint may be done without an explicit 3D reconstruction of the person.
In one embodiment, a method includes, by a computing device, accessing current motion measurements associated with a current time instant, where the current motion measurements (104) are generated using a motion sensor (102), generating current gravity- aligned motion measurements based on the received current motion measurements (104), accessing a set of previous gravity-aligned motion measurements (112) associated with a time period prior to the current time instant, generating a probabilistic distribution (118) of the one or more displacements or the one or more speeds by using a statistical motion model (114) to process the current gravity- aligned motion measurements and the set of previous gravity-aligned motion measurements (112), and estimating, using a nonlinear state estimator (108), a state (120) of the motion sensor (102) based on the current motion measurements (104) and the probabilistic distribution (118) of the one or more displacements or the one or more speeds, the state including a three-dimensional position of the motion sensor (102) at the current time instant.
G01C 21/16 - Navigation; Navigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
3.
ONLINE CALIBRATION BASED ON DEFORMABLE BODY MECHANICS
The disclosed computer-implemented method for online calibration based on deformable body mechanics may include (i) detecting, via at least one sensor, deformation of a wearable frame that houses at least one component of a display system, (ii) determining how the deformation changes a position of the component of the display system, and (iii) compensating for the changed position of the component of the display system when processing an image to be displayed to a user of the wearable frame. In one embodiment, the sensor includes a simultaneous location and mapping ("SLAM") sensor gathering SLAM data and the detection of the deformation of the wearable frame is based at least in part on the SLAM data. Various other methods, systems, and computer-readable media are also disclosed.
G06F 3/03 - Arrangements for converting the position or the displacement of a member into a coded form
G06F 3/0346 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
4.
MICRO OLED DISPLAY DEVICE WITH SAMPLE AND HOLD CIRCUITS TO REDUCE BONDING PADS
Embodiments relate to a display device including bonding pads on a display element where data signals for a plurality of columns of pixels are provided to a same bonding pad in a time-divisional manner. Each of the bonding pads is connected to a plurality of demultiplexer circuits for sampling data signals at the bonding pad, storing the data signals, and transferring the sample data signals to corresponding columns of pixels. Each column of pixels includes a plurality of columns of subpixels, and a period during which a demultiplexer circuit samples the bonding pad for a column of subpixels of a first color may at least partially overlap with a period during which the demultiplexer circuit transfers previously sampled data signals to a column of subpixels of a second color.
G09G 3/3208 - 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 semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
5.
FACILITATING WIRELESS COMMUNICATION FOR WEARABLE DEVICE
Disclosed herein are aspects related to a device that can facilitate wireless communication despite a contact of a user with the device. In one aspect, the device includes a wireless interface, a sensor, and a processor. In one aspect, the wireless interface is configure to communicate data with another device through a wireless communication link. In one aspect, the sensor is configured to detect whether the device is attached to a cradle. In one aspect, the processor is configured to determine whether the contact of the user with the device interferes with the wireless communication link, in response to determining that the device is detached from the cradle and/or determining at least one receive signal metric of the wireless interface. In one aspect, the processor is configured to initiate a process to facilitate communication of the data, in response to determining that the contact of the user with the device interferes with the wireless communication link.
G06F 1/16 - Constructional details or arrangements
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
H04M 1/72412 - User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
In one embodiment, a method includes accessing a first image corresponding to a first frame of a video stream, where the first image has complete pixel information, rendering a provisional image corresponding to a second frame of the video stream subsequent to the first frame, where the provisional image has a first area with complete pixel information and a second area with incomplete pixel information, generating a predicted image corresponding to the second frame by re-projecting at least an area of the first image according to one or more warping parameters, and generating a second image corresponding to the second frame by compositing the rendered provisional image and the predicted image.
In one embodiment, a method includes receiving a source image and its associated parameters from each of multiple image sources, associating each of the source images with a layer in a range of layers based on the parameters associated with the source images, the range of layers specifying a composition layering order of the source images, generating a corresponding customized distortion mesh for each particular source image in the source images based on the parameters associated with the particular source image and at least a portion of the parameters associated with each of the source images that is associated with any layer preceding a layer associated with the particular source image, modifying each of the source images using the corresponding customized distortion mesh, generating a composite image using the modified source images, and displaying the composite image as a frame in a video.
A micro-light emitting diode (micro-LED) includes a mesa structure that includes an n-type semiconductor layer, a p-type semiconductor layer, and an active region between the n-type semiconductor layer and the p-type semiconductor layer. The active region includes at least one quantum well layer. The at least one quantum well layer has a first effective bandgap and a first stress in a center region of the at least one quantum well layer, and a second effective bandgap and a second stress in a mesa sidewall region of the at least one quantum well layer. The second stress is lower than the first stress or is opposite to the first stress. The second effective bandgap is greater than the first effective bandgap to form a lateral carrier barrier in the at least one quantum well layer.
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 33/06 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
H01L 33/18 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a particular crystal structure or orientation, e.g. polycrystalline, amorphous or porous within the light emitting region
H01L 33/30 - Materials of the light emitting region containing only elements of group III and group V of the periodic system
A method of forming a pixel-aligned volumetric avatar includes receiving multiple two-dimensional images having at least two or more fields of view of a subject. The method also includes extracting multiple image features from the two-dimensional images using a set of learnable weights, projecting the image features along a direction between a three-dimensional model of the subject and a selected observation point for a viewer, and providing, to the viewer, an image of the three-dimensional model of the subject. A system and a non-transitory, computer readable medium storing instructions to perform the above method, are also provided.
A power supply unit adapts based on an image to be displayed by a display panel. The power supply unit includes a controller circuit for generating a control signal, and a converter circuit for generating an output supply voltage based on the control signal. The controller circuit includes a first look-up table (LUT) storing a set of lower limit values, and a second LUT storing a set of upper limit values. Moreover, the controller circuit includes a microcontroller for receiving an on-pixel-ratio (OPR) value and identifying an entry in the first LUT and the second LUT from the received OPR value. The controller circuit further includes an output circuit for generating the control signal between a first voltage corresponding to a lower limit stored in the identified entry in the first LUT and a second voltage corresponding to an upper limit stored in the identified entry in the second LUT.
G09G 3/3225 - 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 semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
11.
SIMULATED CONTROL FOR 3-DIMENSIONAL HUMAN POSES IN VIRTUAL REALITY ENVIRONMENTS
A method for simulating a solid body animation of a subject includes retrieving a first frame that includes a body image of a subject. The method also includes selecting, from the first frame, multiple key points within the body image of the subject that define a hull of a body part and multiple joint points that define a joint between two body parts, identifying a geometry, a speed, and a mass of the body part to include in a dynamic model of the subject, based on the key points and the joint points, determining, based on the dynamic model of the subject, a pose of the subject in a second frame after the first frame in a video stream, and providing the video stream to an immersive reality application running on a client device.
The invention is directed towards employing semiconductor-based waveguides as secondary optical components that reduce the beam divergence of light generated by LEDs. A lighting source includes a first semiconductor die and a second semiconductor die. The first semiconductor die includes an LED. The second semiconductor die is bonded to the first semiconductor device and includes a crystalline waveguide having a first waveguide surface, a second waveguide surface, and a waveguide body. The first waveguide surface receives light from the LED. The waveguide body is comprised of a crystalline material that transmits the received light from the first waveguide surface to the second waveguide surface. The second waveguide surface emits the received portion of the light with a second beam divergence that is significantly less than the first beam divergence.
H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
A display device dynamically determines pixel settle times to reduce a display latency. The display device includes a backlight unit (BLU) for providing light for displaying an image, a plurality of pixels for modulating the light provided by the BLU, and a controller circuit for controlling the BLU and the plurality of pixels. The controller circuit determines a settle time from display data for a current display frame and display data for a previous display frame, and turns on the BLU based on the determined settle time. The determined settle time corresponding to an expected amount of time for the plurality of pixel to transition from a first state corresponding to the display data for the previous display frame to a second state corresponding to the display data for the current display frame.
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
Embodiments described herein disclose methods and systems directed to locomotion in virtual reality (VR) based on hand gestures of a user. In some implementations, the user can navigate between locations using hand gestures that trigger teleportation. In other implementations, the user can separately control forward/backward movement and the direction orientation the user is facing. The separate control can either be with one hand when making different gestures or by using different hands to control movement and orientation. In some implementations, a dragging gesture by the user is interpreted by the VR system to trigger movement. In this way, the user can turn in place without moving forward, move forward without turning, or can move forward and turn, while controlling speed, all with a single gesture.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/04815 - Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
15.
CARRIER CONFINEMENT IN LEDS BY VALENCE BAND ENGINEERING
A micro-light emitting diode (micro-LED) includes a substrate, an n-type semiconductor layer on the substrate, a p-type semiconductor layer, and an active region between the n-type semiconductor layer and the p-type semiconductor layer and configured to emit red light. The active region includes a barrier layer characterized by a first lattice constant, and a quantum well layer next to the barrier layer. The quantum well layer is characterized by a second lattice constant greater than the first lattice constant and by an in-plane compressive strain. The active region has a lateral linear dimension equal to or less than about 10 μm.
H01L 33/06 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
H01L 33/18 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a particular crystal structure or orientation, e.g. polycrystalline, amorphous or porous within the light emitting region
H01L 33/30 - Materials of the light emitting region containing only elements of group III and group V of the periodic system
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
A device includes a stack of a lens assembly and a steering assembly. The stack is configured to receive a beam from a first side and output the beam from a second side. The lens assembly is configured to provide an adjustable optical power to the beam. The steering assembly is configured to provide an adjustable steering angle to the beam. The device also includes a reflector configured to receive the beam output from the second side of the stack, and reflect the beam back to the second side of the stack. The beam reflected back from the reflector is incident onto the second side of the stack, and output from the first side of the stack.
G02F 1/29 - 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 for the control of the position or the direction of light beams, i.e. deflection
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
An optical element includes a first layer (220), a second layer (240), and a fluid (230). A first surface (211) of the first layer is configured to change hydrophobicity in response to incoming activation light. Absorbing molecules in the fluid are repelled or attracted to the first surface in response to the hydrophobicity of the first surface.
Systems and methods for providing partial passthrough video to a user of a virtual reality device are disclosed herein. Providing the partial passthrough video can include detecting a hand passthrough trigger event and identifying a hand passthrough video feed. Providing partial passthrough video can further include aligning the hand passthrough video feed with a virtual environment presented to a user by the virtual environment and, based on the aligning of the hand passthrough video feed with the virtual environment, overlaying the hand passthrough video feed on the virtual environment.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/03 - Arrangements for converting the position or the displacement of a member into a coded form
G06F 3/04815 - Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
19.
DEVICES, SYSTEMS, AND METHODS FOR MODIFYING FEATURES OF APPLICATIONS BASED ON PREDICTED INTENTIONS OF USERS
A disclosed system includes a wearable dimensioned to be donned on a body of a user of a computing device, a set of sensors coupled to the wearable, wherein the set of sensors detect one or more neuromuscular signals via the body of the user, and at least one processing device communicatively coupled to the set of sensors, wherein the processing device determines, based at least in part on the neuromuscular signals detected by the set of sensors, an intention of the user in connection with an application running on the computing device and, in response to determining the intention of the user, modifying a feature of the application running on the computing device to account for the intention of the user. Various other devices, systems, and methods are also disclosed..
Disclosed herein are related to a device controlling a wireless communication link based on an average amount of radiation exposure and quality of service (QoS). In one aspect, the device includes a processor configured to determine the QoS indicating a target performance of a communication link of a communication interface. In one aspect, the processor is configured to determine radio resource information of the communication link. In one aspect, the processor is configured to predict an amount of radiation exposure for a time period according to the QoS, the radio resource information, and the detected proximity of the user. In one aspect, the processor is configured to compare the predicted amount of radiation exposure for the time period against a time averaged threshold amount of radiation exposure. In one aspect, the processor is configured to allocate radio resources to the communication interface, according to the comparison.
H04W 52/36 - Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
H04L 5/00 - Arrangements affording multiple use of the transmission path
An audio system including an optical microphone and an audio controller. The optical microphone includes a light source and a detector. In some embodiments, the light source illuminates skin of a user. Alternatively the optical microphone also includes a membrane, and the light source illuminates a portion of the membrane. Sounds from a local area cause vibrations in the skin (or vibrations in the membrane). The detector may be in an interferometric configuration or a non- interferometric configuration with the light source. The audio controller monitors the vibrations of the skin (or membrane) using signal output from the detector, and measures the sounds using the monitored vibrations.
In an embodiment, a method involves receiving a pixel array, compressing the pixel array by, for each pixel block of multiple pixel blocks: accessing pixel values associated with pixels in the pixel block, determining a range of the pixel values and an endpoint pixel value in the range, determining quantization levels corresponding to different values within the range of the pixel values, selecting a quantization level from the quantization levels for each of the pixel values in the pixel block, and encoding the pixel values in the pixel block using their respective selected quantization levels and the endpoint pixel value.
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
A light source based on an optical frequency mixer is disclosed. The light source has a first laser for emitting light at a first optical frequency, and a plurality of second lasers for emitting light at different second optical frequencies. The optical frequency mixer provides output light beams at mixed optical frequencies of the first and second lasers. Wavelength of output light beams may be tuned by tuning wavelength of any of the fist or second lasers. In this manner, RGB wavelength-tunable light sources may be constructed based on red or near-infrared lasers. The wavelength tunability of the output light beams may be used to angularly scan or refocus the light beams.
Disclosed herein are related to a wireless communication. In one aspect, a wireless communication device receives a frame including a first indication that indicates the wireless communication device to disable transmission during a quiet period. The quiet period may overlap with a restricted service period of a restricted target wake time (TWT) schedule of the wireless communication device. In one aspect, the wireless communication device may determine to ignore the first indication for the quiet period based on a defined rule or a separate indication indicating the wireless communication device to ignore the first indication.
Disclosed is a polymeric waveguide for propagating light therein along width and length dimensions of the polymeric waveguide. The polymeric waveguide has a first curved surface on one side thereof and a second curved surface on an opposite second side thereof, and a refractive index spatially varying through a thickness thereof between the first curved surface and the second curved surface. The polymeric waveguide is curved in a cross-section comprising at least one of the width and length dimensions.
A display device improves the grounding connection of a polarizer (250B) by using a metal bridge (340) that couples the polarizer to a ground (320) of the display device. The display device includes a backlight unit (BLU) for providing light for displaying an image, a plurality of pixels for modulating the light provided by the BLU, a polarizer (250B) for filtering the light provided by the BLU, and the metal bridge (340). The metal bridge (340) is disposed in a non-display area surrounding a display area (310) of the display device.
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G02B 1/16 - Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
In one embodiment, a method includes the steps of capturing an image from a camera viewpoint, the image depicting a physical keyboard, detecting one or more shape features of the physical keyboard depicted in the image by comparing pixels of the image to a predetermined shape template, the predetermined shape template representing visual characteristics of spaces between keyboard keys, accessing predetermined shape features of a keyboard model associated with the physical keyboard, and determining a pose of the physical keyboard based on comparisons between (1) the detected one or more shape features of the physical keyboard and (2) projections of the predetermined shape features of the keyboard model toward the camera viewpoint.
G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
A display panel (102) has an array of pixels (103) backlighted by a backlight (104) including a lightguide (106) and a plurality of out- coupling gratings (112). The locations of the out-coupling gratings (112) are coordinated with positions of pixels in the array of pixels (103). The backlight (104) may include a light-conducting transparent slab (106) or an array of linear waveguides (207) running parallel to the rows of the pixel array (103), with the gratings (112) formed in the slab (106) or in the waveguide (207). Wavelength composition and polarization of the light emitted by the waveguide may be matched to the transmission spectral bands and transmission polarization of the display panel (102).
G02B 30/33 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the autostereoscopic type involving directional light or back-light sources
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
H04N 13/351 - Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for displaying simultaneously
A display device with a transparent illuminator and an liquid crystal (LC) display panel is disclosed. The transparent illuminator includes a light source and a transparent lightguide, which may be based on a slab of transparent material with zigzag light propagation of the illuminating light in the slab and/or a transparent photonic integrated circuit with singlemode ridge waveguides for spreading the illuminating light in a plane parallel to the plane of LC display panel. The lightguide includes a plurality of grating out-couplers whose position is coordinated with positions of LC pixels for higher throughput. A reflective offset-to-angle optical element may be provided to form an image in angular domain through the LC panel and through the transparent illuminator, resulting in an overall compact and efficient display configuration.
A light source includes an epitaxial layer stack that includes an n-type semiconductor layer, a light-emitting layer, and a p-type semiconductor layer. The epitaxial layer stack includes a two-dimensional (2-D) array of mesa structures formed therein. The light source further includes an array of p-contacts electrically coupled to the p-type semiconductor layer of the 2-D array of mesa structures, a metal layer in regions surrounding individual mesa structures of the 2-D array of mesa structures, and a plurality of n-contacts coupling the metal layer to the n-type semiconductor layer at a plurality of locations between the individual mesa structures of the 2-D array of mesa structures.
H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
H01L 33/38 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the electrodes with a particular shape
H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
A method for depth sensing from an image of a projected pattern is performed at an electronic device with one or more processors and memory. The method includes receiving an image of a projection of an illumination pattern; for a portion of the image, selecting a candidate image of a plurality of candidate images by comparing the portion of the image with a plurality of candidate images; and determining a depth for the portion of the image based on depth information associated with the selected candidate image. Related electronic devices and computer readable storage medium are also disclosed.
The disclosed computer-implemented method may include (1) obtaining, within a local environment in which a user is in physical contact with an electronic device, a current value for each of a plurality of measurable characteristics associated with at least one of the user or the local environment, (2) determining, based on the current value for each of the plurality of measurable characteristics, a temperature threshold for the electronic device, (3) measuring a current temperature of the electronic device, (4) comparing the current temperature to the temperature threshold, and (5) initiating, in response to the current temperature exceeding the temperature threshold, a heat mitigation operation of the electronic device to lower the current temperature. Various other methods, electronic devices, and computer-readable media are also disclosed.
H04M 1/72403 - User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
G06F 1/3206 - Monitoring of events, devices or parameters that trigger a change in power modality
An audio assembly provides audio content to a user. The audio assembly comprises an elongated body, a diaphragm, a transducer, and a plurality of vent assemblies. The elongated body has a first end and a second end opposite the first end. The diaphragm is within the elongated body and pivots about a pivot location that is proximate the second end. The transducer is within the elongated body and is positioned proximate to the first end. The transducer causes the diaphragm to pivot about the pivot location such that the diaphragm generates a positive acoustic pressure wave from a first surface of the diaphragm and a negative acoustic pressure wave from a second surface of the diaphragm. The plurality of vent assemblies are along one or more surfaces of the elongated body, and are configured to vent the positive acoustic pressure wave and the negative acoustic pressure wave.
H04R 5/033 - Headphones for stereophonic communication
H04R 7/18 - Mounting or tensioning of diaphragms or cones at the periphery
H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
34.
SYSTEMS AND METHODS OF CONFIGURING A SPECTRAL MASK
Systems and methods for configuring a spectral mask include a transmitting device which maintains a plurality of spectral masks for signal transmissions. The transmitting device determines a channel to transmit a signal. The transmitting device selects a first spectral mask from the plurality of spectral masks according to the determined channel to transmit the signal. The transmitting device transmits the signal in the determined channel to a receiving device according to the first spectral mask.
Disclosed herein are systems, devices and methods related to a wireless communication. In one aspect, a device determines a first metric according to a first data rate and a first power consumption of communication through a first antenna of the device. In one aspect, the device determines a second metric according to a second data rate and a second power consumption of communication through the first antenna and a second antenna of the device. In one aspect, the device selects one or more of the first antenna and the second antenna for communication with another device, according to the first metric and the second metric. In one aspect, the device communicates through the one or more of the first antenna and the second antenna.
H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04B 7/08 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
36.
SUBSTITUTED PROPANE-CORE MONOMERS AND POLYMERS THEREOF FOR VOLUME BRAGG GRATINGS
The disclosure provides recording materials including propane derivatized monomers and polymers for use in volume Bragg gratings, including, but not limited to, volume Bragg gratings for holography applications. Several structures are disclosed for propane derivatized monomers and polymers for use in Bragg gratings applications, leading to materials with higher refractive index, low birefringence, and high transparency. The disclosed propane derivatized monomers and polymers thereof can be used in any volume Bragg gratings materials, including two-stage polymer materials where a matrix is cured in a first step, and then the volume Bragg grating is written by way of a second curing step of a monomer.
C07C 233/65 - Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
C07C 271/16 - Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms
C07C 323/12 - Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
C07C 323/20 - Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton with singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring
C07F 9/18 - Esters of thiophosphoric acids with hydroxyaryl compounds
C08J 3/00 - Processes of treating or compounding macromolecular substances
A display system includes (a) a display element having an organic light emitting diode-containing display active area disposed over a silicon backplane, (b) a display driver integrated circuit (DDIC) attached to the display element and electrically connected with the display active area, and (c) a thermal barrier disposed within the silicon backplane, where the thermal barrier is configured to inhibit heat flow through the silicon backplane and into the display active area.
G06F 1/16 - Constructional details or arrangements
H01L 51/50 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H01L 51/52 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
The disclosure provides recording materials including mono- or poly-phenyl-core derivatized monomers and polymers for use in volume Bragg gratings, including, but not limited to, volume Bragg gratings for holography applications. Several structures are disclosed for mono- or poly-phenyl-core derivatized monomers and polymers for use in Bragg gratings applications, leading to materials with higher refractive index, low birefringence, and high transparency. The disclosed mono- or poly-phenyl-core derivatized monomers and polymers thereof can be used in any volume Bragg gratings materials, including two-stage polymer materials where a matrix is cured in a first step, and then the volume Bragg grating is written by way of a second curing step of a monomer.
C07C 271/16 - Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms
C07C 271/28 - Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring to a carbon atom of a non-condensed six-membered aromatic ring
C07C 271/48 - Esters of carbamic acids having oxygen atoms of carbamate groups bound to carbon atoms of six-membered aromatic rings with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms
C07C 323/12 - Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
C07C 323/20 - Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton with singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring
C07C 333/04 - Monothiocarbamic acids; Derivatives thereof having nitrogen atoms of thiocarbamic groups bound to hydrogen atoms or to acyclic carbon atoms
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
A waveguide display includes a substrate transparent to visible light, a first grating on the substrate and configured to couple display light into or out of the substrate, and a phase structure on the substrate and configured to change a polarization state of the display light after or before the display light reaches the first grating. The first grating is characterized by a polarization-dependent diffraction efficiency. The first grating includes, for example, a surface-relief grating or a volume Bragg grating.
A method includes receiving, through a network by a computing system associated with an artificial-reality device, video data of a user of a second computing system comprising a first and second image of the user. The first and second images may be captured concurrently by a first camera and a second camera of the second computing system, respectively. The computing system generates a planar proxy for displaying the user and determines a pose for the planar proxy within a three-dimensional virtual environment. The computing system renders a left image for a left-eye display and a right image for a right-eye display of the artificial-reality device based on the planar proxy having the determined pose and the first image, and the planar proxy having the determined pose and the second image, respectively. The computing system displays the rendered left image and right image using the left-eye display and right-eye display, respectively.
H04N 13/117 - Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation the virtual viewpoint locations being selected by the viewers or determined by viewer tracking
In one embodiment, a method includes the steps of generating, for a virtual object defined by a geometric representation, multiple viewpoints surrounding the virtual object, generating, for each of the multiple viewpoints, a simplified geometric representation of the virtual object based on the viewpoint, wherein the simplified geometric representation has a lower resolution than the geometric representation of the virtual object, receiving, from a client device, a desired viewpoint from which to view the virtual object, selecting one or more viewpoints from the multiple viewpoints based on the desired viewpoint, and sending, to the client device, rendering data including the simplified geometric representation and an associated view-dependent texture that are associated with each of the selected one or more viewpoints, the rendering data being configured for rendering an image of the virtual object from the desired viewpoint.
A system includes a display panel, a temperature sensor configured to measure a temperature of the display panel, a thermoelectric device coupled to the display panel and configured to transfer heat to or from the display panel, and a controller electrically coupled to the temperature sensor and the thermoelectric device. The controller is configured to receive the measured temperature of the display panel and, based on the measured temperature of the display panel, send a second signal to the thermoelectric device to cause the thermoelectric device to remove a first quantity of heat from the display panel or send a third signal to the thermoelectric device to cause the thermoelectric device to provide a second quantity of heat to the display panel.
H01L 51/52 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
43.
SYSTEMS AND METHODS FOR GENERATING DEVICE-IDENTIFYING DIGITAL CONTENT ON SOCIAL MEDIA PLATFORMS
A computer-implemented method for generating device-identifying digital content (214) on social media platforms may include (i) identifying digital content (214) created by a content-creation device (204) for display on a social media platform (206), (ii) modifying the digital content (214) to indicate that the digital content (214) was created by the content-creation device (204) such that, when the modified digital content (214) is displayed on the social media platform (206), the modified digital content (214) identifies the content-creation device (204) as the source of the digital content (214), and (iii) displaying, on the social media platform (206), the modified digital content (214) to enable users of the social media platform(206) to identify the content-creation device (204) as the source of the digital content (214). Various other methods, systems, and computer-readable media are also disclosed.
H04N 21/2743 - Video hosting of uploaded data from client
H04N 21/472 - End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification or for manipulating displayed content
H04N 21/4788 - Supplemental services, e.g. displaying phone caller identification or shopping application communicating with other users, e.g. chatting
H04N 21/8352 - Generation of protective data, e.g. certificates involving content or source identification data, e.g. UMID [Unique Material Identifier]
44.
SLAB WAVEGUIDE AND PROJECTOR WITH INTERMODAL COUPLING
A compact collimator or projector includes a waveguide (900) having a slab core structure (908) supporting at least two lateral modes of propagation. A light beam (105) coupled into a first mode (911) propagates to an edge (931) of the waveguide (900) where it is reflected by a reflector (921) to propagate back. Upon propagation back and forth, the light is converted into a second mode (912). An out-coupling region (914), such as an evanescent coupler, is provided to out-couple the light propagating in the second mode. The reflector (921) may have focusing power to collimate the out-coupled light beam. The light beam may be converted from the first to the second mode without being reflected from a reflector.
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
G02B 6/10 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
A sensor apparatus comprises: a pixel cell configured to generate a voltage, the pixel cell including one or more photodiodes configured to generate a charge in response to light and a charge storage device to convert the charge to a voltage; an integrated circuit comprising a plurality of integrated memory circuits and configured to: generate, based on a first voltage obtained from the charge storage device of the pixel cell, a first voltage value during a first time period; and generate, based on a second voltage generated by fixed pattern noise from the pixel cell and the integrated circuit, a second voltage value occurring a second time period; and one or more analog-to-digital converters (ADC) configured the convert the first voltage value to a first digital pixel value and the second voltage value to a second digital pixel value; and a processor configured to generate a first altered digital pixel value based on the first digital pixel value and the second digital pixel value, if the second digital value is less than a threshold value.
H04N 5/365 - Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
H04N 5/3745 - Addressed sensors, e.g. MOS or CMOS sensors having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
In one example, an apparatus comprises: a semiconductor substrate comprising a first photodiode and a second photodiode, the first photodiode being positioned adjacent to the second photodiode along a first axis; a birefringent crystal positioned over the first photodiode and the second photodiode along a second axis perpendicular to the first axis; and a microlens positioned over the birefringent crystal along the second axis, the microlens having an asymmetric curvature along the first axis, an apex point of the curvature being positioned over the first photodiode along the second axis.
In one embodiment, a method includes projecting a triangle primitive of an object defined in three-dimensional space onto a two-dimensional space, accessing a distortion map generated based on distortion characteristics of a display system, distorting a grid representation of a screen of the display system using the distortion map, determining a visibility of the triangle primitive relative to pixels of the screen by comparing the projected triangle primitive and the distorted grid representation of the screen, rendering an image based on the determined visibility of the triangle primitive, the rendered image being configured to be displayed by the screen of the display system having the distortion characteristics.
In one embodiment, a method includes instructing, at a first time, a camera with multiple pixel sensors to capture a first image of an environment comprising an object to determine a first object pose of the object. Based on the first object pose, the method determines a predicted object pose of the object at a second time. The method determines a predicted camera pose of the camera at the second time. The method generates pixel-activation instructions based on a projection of a 3D model of the object having the predicted object pose onto a virtual image plane associated with the predicted camera pose. The method instructs, at the second time, the camera to use a subset of the plurality of pixel sensors to capture a second image of the environment according to the pixel-activation instructions. The method determines, based on the second image, a second object pose of the object.
There is provided an eye tracking system including an interferometer. The system also includes an emission section configured to direct a light beam from the interferometer to a user's eye and a lens. A bezel region is adjacent to the lens, and the emission section is disposed adjacent to the lens or on the lens.
Disclosed herein are systems and methods related to systems and methods of target wake time for peer-to-peer communication. In one aspect, a first wireless communication devices configures a subfield indicating use of peer-to-peer communication during a service period of a restricted target wake time. The first wireless communication device sends a message including the subfield to a second wireless communication device.
An optical element includes a first birefringent medium grating layer (455) with slanted Bragg grating planes (475) and orientations of directors of first optically anisotropic molecules spatially varying with a first in-plane pitch along the horizontal and a first vertical pitch. The optical element also includes a second birefringent medium layer (460) with slanted Bragg grating planes (465) with orientations of directors of second optically anisotropic molecules spatially varying with a second in-plane pitch and a second vertical pitch. The second birefringent medium layer is optically coupled with the first birefringent medium layer and configured to reduce chromatic dispersion effects of a light diffracted by the first birefringent medium layer. The first in-plane pitch is substantially the same as the second in-plane pitch, and the second vertical pitch is smaller than the first vertical pitch which means that the twist angle of the second grating is larger than the twist angle of the first grating.
Disclosed herein are related to a first device to communicate with an access point and a second device. In one aspect, the first device determines a first time interval for wireless communication between the first device and the access point. In one aspect, the first device determines a second time interval to prevent wireless communication between the first device and the access point. In one aspect, the first device determines a third time interval within the second time interval for wireless communication between the first device and the second device. In one aspect, the first device communicates with the access point during the first time interval. In one aspect, the first device communicates with the second device as a soft access point during the third time interval.
An optical coupler includes a plurality of volume gratings in a substrate. The gratings include an array of fringes extending along length and thickness dimensions of the substrate. A difference between a refractive index of the fringes and a refractive index of the substrate depends on a depth coordinate along the thickness dimension of the substrate. A dependence of the difference on the depth coordinate has a bell-shaped function which suppresses ghost image formation due to optical crosstalk between gratings of neighboring spatial pitches.
An example disclosed article (100) may include a first layer (120) and a second layer (140), where the first layer (120) and the second layer (140) may be bonded together within a peripheral region (102), the first layer (120) and the second layer (140)may be spaced apart within a cushion portion, the peripheral region may extend at least partially around the cushion portion (110), and the first layer (120) may include cellulose fibers. The article may be used as a component of a packaging arrangement that may be entirely recycled using a paper recycling process. Examples also include, for example, related methods, systems, and assemblies.
B32B 3/28 - Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form characterised by a layer with cavities or internal voids characterised by a layer comprising a deformed thin sheet, e.g. corrugated, crumpled
B32B 7/05 - Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
B65D 81/05 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
55.
COORDINATING COMMUNICATION LINKS FOR ARTIFICIAL REALITY
Disclosed herein are related to coordinating communication among a first access point, a first station device, a second access point, and a second station device. In one aspect, the second access point receives, from the first access point, a first beacon of the first access point at a first beacon transmission time. The first beacon may indicate an offset between the first beacon transmission time of the first beacon and a first data transmission time of the first access point for communication between the first access point and a first station device. In one aspect, the second access point may determine, according to the offset, a second data transmission time of the second access point to be distinct from the first data transmission time of the first access point. The second access point may communicate with a second station device, according to the second data transmission time.
The disclosed computer-implemented method may include identifying, via an artificial reality system, a plurality of physical objects in a real-world environment of a user and defining, based on identifying the plurality of objects, an object-manipulation objective for manipulating at least one of the plurality of objects. The method may also include determining an action sequence that defines a sequence of action steps for manipulating the at least one of the plurality of objects to complete the object-manipulation objective, and presenting, via the artificial reality system, a notification to the user indicative of the action sequence. Various other methods, systems, and computer-readable media are also disclosed.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06T 19/00 - Manipulating 3D models or images for computer graphics
G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
G06F 1/16 - Constructional details or arrangements
Disclosed herein includes A first wireless multilink device (MLD) including a transceiver configured to send, to a second wireless MLD, a request for multi-link reconfiguration. The transceiver may be configured to receive, from the second wireless MLD, a response to the request for the multi-link reconfiguration. The multi-link reconfiguration may include configuring to implement at least one of: adding a link, removing a link or switching one end of a link, between the first wireless MLD and the second wireless MLD. The first wireless MLD and the second wireless MLD may maintain connection via at least one link during the multi-link reconfiguration.
A grating coupler may be fabricated by exposing a photopolymer layer to grating forming light for forming periodic refractive index variations in the photopolymer layer. The photopolymer layer may be exposed to apodization light for reducing an amplitude of the periodic refractive index variations in a spatially-selective manner. The apodization may also be achieved or facilitated by subjecting outer surface(s) of the photopolymer layer to a chemically reactive agent that causes the refractive index contrast to be reduced near the surface(s) of application. The apodized refractive index profile of the gratings facilitates the reduction of optical crosstalk between different gratings of the grating coupler.
A method of manufacturing an optically anisotropic polymer thin film includes forming a composite structure that includes a polymer thin film and a high Poisson's ratio polymer thin film disposed directly over the polymer thin film, attaching a clip array to opposing edges of the composite, the clip array including a plurality of first clips slidably disposed on a first track located proximate to a first edge of the composite and a plurality of second clips slidably disposed on a second track located proximate to a second edge of the composite, applying a positive in-plane strain to the composite along a transverse direction by increasing a distance between the first clips and the second clips, and decreasing an inter-clip spacing amongst the first clips and amongst the second clips along a machine direction, wherein the high Poisson's ratio polymer thin film applies a negative in-plane strain to the polymer thin film along the machine.
B29C 55/02 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
B29C 55/08 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
An in-ear device is implemented as part of an audio system to present a user with improved audio content within an artificial reality system. The in-ear device is a fully integrated device with an internal microphone (320), an external microphone (330), and a transducer (340) in which portions of the transducer (340) form portions of the body (310) of the device. This integration of transducer (340) into the body (310) of the in-ear device reduces the size of the in-ear device and allows for placement deeper within the ear canal of the user. The transducer (340) generates audio content based on instructions received from an audio system that may be located on a device that is external to the in-ear device. The external microphone (330) provides hear-through functionality, while the internal microphone (320) provides feedback information to the audio system.
An off-axis focusing geometric phase (Pancharatnam-Berry phase) lens (300, 1120) comprises an active or passive optically anisotropic film in which the optic axis orientation in-plane is a function of position, exhibiting an in-plane rotation along at least two opposite directions in-plane extending from the centre of the lens pattern to opposite peripheral portions of the lens. The optic axis is arranged to rotate in the same sense along those in-plane directions. The rate of change of the azimuthal angle between the projection of the optic axis in-plane and a reference direction is configured to increase from the centre of the lens pattern to the periphery in at least that portion of the lens including the lens pattern centre. The lens pattern centre is shifted from the geometrical centre of the lens by a predetermined distance in a predetermined direction.
G02F 1/29 - 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 for the control of the position or the direction of light beams, i.e. deflection
G02F 1/139 - 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 for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
G02F 1/01 - 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 for the control of the intensity, phase, polarisation or colour
62.
METHODS OF DRIVING LIGHT SOURCES IN A NEAR-EYE DISPLAY
A method including determining a maximum luminance location of a display based on a field of view of an eye of a user of the display, and driving a plurality of light sources in the display based on locations of the plurality of light sources with respect to the maximum luminance location of the display. The plurality of light sources is controlled to have different luminance levels in different display zones corresponding to different zones on the retina of the eye of the user. In some examples, the display zones of the display system that have higher luminance levels can be dynamically changed based on the field of view or the gaze direction of the eye of the user.
G06F 3/147 - Digital output to display device using display panels
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G09G 3/32 - 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 semiconductive, e.g. using light-emitting diodes [LED]
H04N 13/332 - Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
G09G 3/3225 - 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 semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
63.
POLARIZATION SELECTIVE OPTICAL ELEMENT AND FABRICATION METHOD
A method includes obtaining a mixture including a first composition and a second composition. The method also includes forming a layer based on the mixture. Ratios between an amount of the first composition and an amount of the second composition at at least two locations of the layer are different.
A method includes attaching a clip array to opposing edges of a polymer thin film, the clip array having a plurality of first clips slidably disposed on a first track located proximate to a first edge of the polymer thin film and a plurality of second clips slidably disposed on a second track located proximate to a second edge of the polymer thin film, applying a positive in-plane strain to the polymer thin film along a transverse direction by increasing a distance between the first clips and the second clips, and decreasing an inter-clip spacing amongst the first clips and amongst the second clips along a machine direction while applying the in-plane strain to form an optically anisotropic polymer thin film.
A polymer thin film comprising a polymer layer having a first in-plane refractive index (nx); and a second in-plane refractive index (ny), wherein nx> 1.8 and (nx- ny) > 0.1. Also method comprising attaching a clip array to opposing edges of a polymer thin film, applying a positive in-plane strain to the polymer thin film along a transverse direction by increasing a distance between the first clips and the second clips and decreasing an inter-clip spacing amongst the first clips and amongst the second clips along a machine direction while applying the in-plane strain to form an optically anisotropic polymer thin film, wherein during the act of applying the in-plane strain the method further comprises at least one of increasing a temperature of the polymer thin film and decreasing a strain rate of the polymer thin film as a function the polymer thin film's location along the machine direction.
B29C 55/08 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
Disclosed devices may include a membrane, a first electrode supported by the membrane, a second electrode, a capacitance sensor configured to determine a capacitance measurement between the first electrode and the second electrode, and a controller configured to control an electrical potential applied between the electrode and the second electrode. The controller may be configured to modify the electrical potential based on the capacitance measurement. Example devices may include one or more flexible membranes that may, at least in part, define an enclosure that is at least partially filled with a dielectric fluid. Examples also include associated methods and systems.
F04B 43/14 - Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members
H01L 41/04 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details of piezo-electric or electrostrictive elements
H02N 1/00 - Electrostatic generators or motors using a solid moving electrostatic charge carrier
67.
ARTIFICIAL REALITY SYSTEMS INCLUDING DIGITAL AND ANALOG CONTROL OF PIXEL INTENSITY
Electronic display devices include digital and analog control of pixel intensity. A digital pixel control circuit (630) and an analog pixel control circuit (650) are provided within each pixel (612A). The digital pixel control circuit employs digital PWM techniques to control a number of subframes within each frame during which a driving current is supplied to a light emitting element within the pixel. The analog pixel control circuit (650) controls the level of the driving current supplied to the light emitting element within the pixel during the frame. In one example, the digital pixel control circuit (630) and the analog pixel control circuit (650) may together control pixel intensity with the analog pixel control circuit (650) providing additional in-pixel bits for increased color depth. Alternatively, the digital pixel control circuit (630) may control pixel intensity and the analog pixel control circuit (650) may control non-uniformity compensation.
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
G09G 3/3233 - 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 semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
68.
DIGITAL PIXEL SENSOR HAVING REDUCED QUANTIZATION OPERATION
In some examples, a sensor apparatus comprises: a pixel cell configured to generate a voltages, the pixel cell including a photodiode configured to generate charge in response to incoming light, and a charge storage device to convert the charge to a voltage; an integrated circuit configured to: determine a first captured voltage converted by the charge storage device during a first time period; compare the first captured voltage to a threshold voltage value; and in response to determining that the first captured voltage meets or exceeds the threshold voltage value: determine first time data corresponding to the first time period; and prevent the charge storage device from further generating a charge; and an analog-to- digital converter (ADC) configured to generate a digital pixel value based on the first captured voltage, and a memory to store the digital pixel value and the first time data..
H04N 5/3745 - Addressed sensors, e.g. MOS or CMOS sensors having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
A high voltage-driven system includes a high voltage optical transformer and a high voltage driven device, where the high voltage optical transformer is located in close proximity to the high voltage driven device. A high voltage connection between the high voltage optical transformer and the high voltage driven device may be shorter than a low voltage connection between the high voltage optical transformer and a low voltage power source used to control the transformer.
H01L 31/167 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the semiconductor device sensitive to radiation being controlled by the light source or sources the light sources and the devices sensitive to radiation all being semiconductor devices characterised by at least one potential or surface barrier
H02M 3/04 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
70.
MULTI-SENSOR CAMERA SYSTEMS, DEVICES AND METHODS FOR PROVIDING IMAGE PAN, TILT AND ZOOM FUNCTIONALITY
The disclosed camera system may include a primary camera and a plurality of secondary cameras that each have a maximum horizontal FOV that is less than a maximum horizontal FOV of the primary camera. Two of the plurality of secondary cameras may be positioned such that their maximum horizontal FOVs overlap in an overlapped horizontal FOV and the overlapped horizontal FOV may be at least as large as a minimum horizontal FOV of the primary camera. The camera system may also include an image controller that simultaneously activates two or more of the primary camera and the plurality of secondary cameras when capturing images from a portion of an environment included within the overlapped horizontal FOV. Various other systems, devices, assemblies, and methods are also disclosed.
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
G03B 17/00 - APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR - Details of cameras or camera bodies; Accessories therefor
H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
An optical device includes a light source and a polarization selective optical element. The polarization selective optical element includes a stack of a plurality of cholesteric liquid crystal layers. The plurality of cholesteric liquid crystal layers includes a first cholesteric liquid crystal layer with liquid crystal molecules arranged in a first helical configuration having a first pitch range for light of a first wavelength range and a second cholesteric liquid crystal layer with liquid crystal molecules arranged in a second helical configuration having a second pitch range for light of a second wavelength range. The second wavelength range is different from the first wavelength range.
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G02F 1/1347 - Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
A device includes a waveguide, an in-coupling element, and an out-coupling element coupled with the waveguide. The waveguide, the in-coupling element, and the out-coupling element are configured to deliver a plurality of portions of an image light to an eye-box of the device. At least one of the in-coupling element or the out-coupling element includes a polarization selective diffractive element. The polarization selective diffractive element includes a grating including a plurality of microstructures defining a plurality of grooves filled with a passive optically anisotropic material having a first effective refractive index along a groove direction of the grooves and a second effective refractive index along an in-plane direction perpendicular to the groove direction. One of the first effective refractive index or the second effective refractive index substantially matches with a refractive index of the microstructures.
In one embodiment, one or more computing systems may receive an image of a portion of a face of a first user. The one or more computing systems may access a three-dimensional (3D) facial model representative of the face of the first user. The one or more computing systems may identify one or more facial features captured in the image and determine a camera pose relative to the 3D facial model based on the identified one or more facial features in the image and predetermined feature locations on the 3D facial model. The one or more computing systems may determine a mapping relationship between the image and the 3D facial model by projecting the image of the portion of the face of the first user onto the 3D facial model from the camera pose and cause an output image of a facial representation of the first user to be rendered.
In one embodiment, a computing system may access a video including a first frame and a second frame. The computing system may determine first sampling locations for the first frame and determine second sampling locations for the second frame by transforming the first sampling locations to the second frame according to an optical flow between the first frame and the second frame. The computing system may select a subset of the second sampling locations based on a comparison between pixels in the first frame corresponding to the first sampling locations and pixels in the second frame corresponding to the second sampling locations. The computing system may define one or more rejection areas in the second frame based on the subset of the second sampling locations to determine third sampling locations in areas outside of the rejection areas. The computing system may generate a sample of the video.
H04N 19/587 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
H04N 19/59 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
G06T 17/30 - Surface description, e.g. polynomial surface description
75.
SYSTEMS AND METHODS FOR MANAGING ENERGY DETECTION THRESHOLDS
Disclosed herein includes a system, a method, and a device for managing energy detection thresholds. A device can perform an energy detection (ED) measurement of a channel, comparing against a defined ED threshold function, so as to determine if the channel is occupied. The device can perform a measurement of a channel indicative of a power level of signals detected in the channel. The device can compare the measurement to a threshold having a value that is a continuous monotonic function having a sloped region between a first region having a first constant value and a second region having a second constant value. The sloped region can include a function of a maximum transmit power of the device and at least one of the first constant value or the second constant value. The device can determine, responsive to the comparison, whether the channel is occupied or unoccupied.
A holographic display with a spatial light modulator coupled to a pupil-replicating lightguide is disclosed. The spatial light modulator provides a light beam with spatially modulated amplitude and/or phase. The light beam is replicated by the pupil-replicating lightguide into a plurality of portions. The portions interfere at an exit pupil to provide an image for direct observation by a user. An eye-tracking system may be provided to determine the position of the user pupils, and the spatial modulation of the light beam may be adjusted accordingly to make sure that the optical interference of the beam portions at the eye pupils provides the required image.
A computing system may determine a head pose and a wrist pose of a user based on sensor data captured by a head-mounted device. The computing system may further receive an image captured by a camera of the head-mounted device that includes at least portion of the body of the user. Using this image, the computing system may determine one or more regions in the image that correspond to the body of the user, and determine, based on these regions and a camera pose of the camera, a three-dimensional volume constraint in which an elbow of the user is likely to be located when the image was captured. From this information, the computing system may utilize the head pose, the wrist pose, and the three-dimensional volume constraint to infer a body pose of the user that includes at least an inferred elbow pose associated with the user.
A computing system may receive sensor data from one or more sensors coupled to a user. Based on this sensor data, the computing system may generate an upper body pose that corresponds to a first portion of a body of the user, which may comprise a head and an arm of the user. The computing system may process the upper body pose of the user using a machine learning model to generate a lower body pose that corresponds to a second portion of the body of the user, which may comprise a leg of the user. The computing system may generate a full body pose of the user based on the upper body pose and the lower body pose.
Aspects of the present disclosure are directed to creating and administering artificial reality collaborative working environments and providing interaction modes for them. An XR work system can provide and control such artificial reality collaborative working environments to enable, for example, A) links between real-world surfaces and XR surfaces; B) links between multiple real-world areas to XR areas with dedicated functionality; C) maintaining access, while inside the artificial reality working environment, to real-world work tools such as the user's computer screen and keyboard; D) various hand and controller modes for different interaction and collaboration modalities; E) use-based, multi-desk collaborative room configurations; and F) context-based auto population of users and content items into the artificial reality working environment.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/0346 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
A method includes receiving a first wireless signal detected by a first device in an environment, the first wireless signal including a first distortion pattern caused by an object moving in the environment, receiving a second wireless signal detected by a second device in the environment, the second wireless signal including a second distortion pattern caused by the object moving in the environment, determining, by comparing the first distortion pattern to the second distortion pattern, that the first distortion pattern and the second distortion pattern correspond to a same movement event associated with the object moving in the environment, determining a timing offset between the first device and the second device based on information associated with the first distortion pattern and the second distortion pattern, and determining, based on the timing offset, temporal correspondences between data generated by the first device and data generated by the second device.
G01S 13/00 - Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
G01S 7/35 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of non-pulse systems
G01S 7/00 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , ,
G01S 13/58 - Velocity or trajectory determination systems; Sense-of-movement determination systems
81.
TECHNIQUES FOR MANUFACTURING VARIABLE ETCH DEPTH GRATINGS USING GRAY-TONE LITHOGRAPHY
A method of fabricating gratings with variable grating depths including depositing a first grating material layer with a uniform thickness profile on a substrate, forming an etch mask layer having a variable thickness profile on the first grating material layer, etching the etch mask layer and the first grating material layer to change the uniform thickness profile of the first grating material layer to a non-uniform thickness profile, forming a patterned hard mask on the first grating material layer, and etching, using the patterned hard mask, the first grating material layer to form a grating with a variable depth in the first grating material layer.
A method includes a computing system associated with an AR device querying, based on a location of the AR device, a registry associated with a distributed map network for a first gateway address associated with a first gateway that provides access to a 3D street map in a physical region. The system downloads the 3D street map by connecting to the first gateway using the first gateway address. The system predicts that the AR device will enter a building in the physical region and queries the registry for a second gateway address associated with a second gateway. The system requests, using the second gateway address, access to the second gateway by providing user authentication information. The system downloads a 3D interior map associated with the building through the second gateway and localizes the AR device within the building using the 3D interior map after the AR device enters the building.
A method of leakage-compensated global illumination comprises obtaining position data for at least one of a head or an eye of a user of a display system by an application processor, rendering image data for an image frame by the application processor based on the position data, modifying the image data to compensate for leakage associated with a global illumination by a display of the display system, and sending the image data to a display driver circuit of the display system for displaying the image frame on the display through the global illumination.
G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
G09G 3/3233 - 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 semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
A display device may include a plurality of tiled spatial light modulators (SLMs) imparting image information upon respective light beams to obtain image beams. Pupil steering optics are configured to steerably direct the image beams towards a same or different exit pupil locations within an eyebox of the display device, providing exit pupil replication and/or an expanded field of view. An eye tracking system provides location information of the user's eye, enabling the pupil steering optic to direct at least some of the image beams to a desired exit pupil location.
A display device includes a diffractive optical element and a tunable light source operable in different states including a first state and a second state. The tunable light source provides first light having a first wavelength while the tunable light source is in the first state and second light having a second wavelength, distinct from the first wavelength, while the tunable light source is in the second state. The first wavelength and the second wavelength correspond to a first color band. The diffractive optical element is positioned to receive and redirect the first light and receive and redirect the second light. The diffractive optical element has a first focal length for the first light and a second focal length, distinct from the first focal length, for the second light.
Aspects of the present disclosure are directed to providing an artificial reality environment with augments and surfaces. An "augment" is a virtual container in 3D space that can include presentation data, context, and logic. An artificial reality system can use augments as the fundamental building block for displaying 2D and 3D models in the artificial reality environment. For example, augments can represent people, places, and things in an artificial reality environment and can respond to a context such as a current display mode, time of day, a type of surface the augment is on, a relationship to other augments, etc. Augments can be on a "surface" that has a layout and properties that cause augments on that surface to display in different ways. Augments and other objects (real or virtual) can also interact, where these interactions can be controlled by rules for the objects evaluated based on information from the shell.
In one embodiment, a computing system may access first alpha values associated with first pixels in a first pixel region of an image and determine a bit budget for encoding the first alpha values. The computing system may then select a first alpha-encoding mode for the first alpha values to reflect a determination that the first alpha values are all fully transparent or all fully opaque, and encode the first alpha values by storing the selected first alpha-encoding mode as part of a metadata without using the bit budget to encode the first alpha values individually. The computing system may then update a record of unallocated bits available for allocation based on the bit budget unused in the encoding of the first alpha values, and allocate, based on the record of unallocated bits, bits to encode a set of alpha values different from the first alpha values.
H04N 19/21 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with binary alpha-plane coding for video objects, e.g. context-based arithmetic encoding [CAE]
88.
COUPLING LIGHT SOURCE TO PHOTONIC INTEGRATED CIRCUIT
A device or system (200) includes a light source (250), an optical waveguide (170), and a light director, or microlens (133). The light source emits illumination light (263). The optical waveguide (170) includes a light input coupler (172). The light director (133) receives the illumination light (263) and generates shaped light (267). The light director adjusts the tilt angle and/or the divergence angle of the illumination light (263).
Disclosed herein are systems and methods related to slot assignments to traffic streams. In one aspect, a first wireless communication device sends, to a second wireless communication device, a request message including a latency marker having a requested value. The requested value indicates that a corresponding traffic stream between the first wireless communication device and the second wireless communication device is latency sensitive. Responsive to the request message, the first wireless communication device receives, from the second wireless communication device, a response message including a response latency marker. The response latency marker includes a response value for the corresponding traffic stream. When the response value is the same as the requested value, the first wireless communication device communicates corresponding traffic stream as a prioritized traffic stream instead of a regular traffic stream, with the second wireless communication device.
Disclosed herein are systems and methods related to describing slot information. In one aspect, a first wireless communication device determines a bitmap having a value for each of a plurality of slots for wireless traffic. The bitmap may indicate a status or type of a corresponding slot. The first wireless communication device may send, using a wireless local area network (WLAN) based protocol, to a second wireless communication device, a message comprising the bitmap. The message may further comprise a duration of each of the plurality of slots, a period of the plurality of slots, and a persistency of the plurality of slots.
A self-calibrating display can detect and compensate for binocular disparity or other visual imperfection of the display. The display includes a pair of projection units for projecting test light carrying test images through waveguides, which are normally used to carry images to left and right eyes of a user. A detection unit detects the test light propagated through the waveguides, and extracts the test images. Position of reference features in the detected test images may be used to determine binocular disparity, and luminance and color distribution across the test images may be used to determine the illumination and color uniformity of the images displayed to the user. After the visual defects have been detected, they may be reduced or compensated for by pre-emphasizing or shifting images to be displayed to the left and right eyes of the user. In the embodiment of claim 4, fig.12a-d, the first and second projection units are configured for providing the image light and the test light in a time-sequential manner, wherein the image light carries first and second modified images such that, for each eye of the user, a sum of the respective modified image and the respective test image equals to an image to be displayed to the eye of the user, wherein the detection unit is synchronized with providing the test light by the first and second projection units, for detecting the first and second test images substantially independently on the images to be displayed to the eyes of the user.
In one embodiment, a computing system may access color components of a pixel region in an image, and then determine a color variance for each of the color components. The computing system may further determine a desired bit allocation for each of the color components based on the color variance associated with that color component. The computing system may then determine a total bit allocation for the pixel region based on the desired bit allocations for the color components, as well as a number of unallocated bits available for allocation. The computing system may further determine a final bit allocation for each of the color components by allocating the total bit allocation to each of the color components according to the desired bit allocation for each of the color components. The computing system may then encode each of the color components using the associated final bit allocation.
H04N 19/14 - Coding unit complexity, e.g. amount of activity or edge presence estimation
H04N 19/15 - Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
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
93.
RATE CONTROLLED IMAGE AND TEXTURE DATA COMPRESSION
In one embodiment, a computing system may determine a quantization range having a first quantization endpoint and a second quantization endpoint. While fixing the second quantization endpoint to an initial value determined based on the color range, one of a plurality of first candidate values for the first quantization endpoint is selected based on a plurality of corresponding first quantization errors. While fixing the first quantization endpoint to the selected first candidate value, one of a plurality of second candidate values for the second quantization endpoint is selected based on a plurality of corresponding second quantization errors. The computing system may define quantization levels corresponding to the bit depth using the quantization range defined by the first quantization endpoint and the second quantization endpoint, and then encode the one or more color components of the pixel region using the quantization levels.
H04N 19/154 - Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
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 19/14 - Coding unit complexity, e.g. amount of activity or edge presence estimation
H04N 19/15 - Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
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
94.
LIGHT GUIDE DISPLAY ASSEMBLY FOR PROVIDING EXPANDED FIELD OF VIEW
A device includes one or more light guides. The device also includes a first in-coupling element configured to couple a first light having a first input field of view ("FOV") into a first light guide, and a second in-coupling element configured to couple a second light having a second input FOV into a second light guide. The device also includes a first out-coupling element configured to couple the first light out of the first light guide as a first output light having a first output FOV, and a second out-coupling element configured to couple the second light out of the second light guide as a second output light having a second output FOV substantially non-overlapping with the first output FOV. A combination of the first output FOV and the second output FOV is larger than at least one of the first output FOV or the second output FOV.
A micro-light emitting diode (micro-LED) including a substrate, a mesa structure including a plurality of semiconductor layers formed on the substrate, and an insulation material layer on sidewalls of the mesa structure. The mesa structure includes a light emitting region configured to emit light of a first wavelength. The insulation material layer includes a transparent insulating material and metal nanoparticles immersed in the transparent insulating material. The transparent insulating material and the metal nanoparticles are configured to cause plasmonic scattering of the light of the first wavelength back into the mesa structure, such that the light of the first wavelength may be randomized in the mesa structure, thereby improving the light extraction efficiency and external quantum efficiency of the micro-LED.
H01L 33/44 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating
An electronic device localizes an audio source by normalizing an amplitude of an audio signal over a time period. The electronic device receives, from one or more microphones of the electronic device, signal(s) representative of audio emitted by an audio source over a time period. The electronic device estimates amplitudes of the signal(s) at a first time within the time period and at a second time within the time period, where the second time is different from the first time. The electronic device normalizes the amplitudes associated with the first and second times to generate normalized amplitudes. The electronic device determines a combined amplitude representative of the audio emitted by the audio source by combining the normalized amplitudes. The electronic device determines, based at least in part on the combined amplitude and motion of the electronic device, an estimated position of the audio source relative to the electronic device.
G01S 5/18 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
97.
BEAM SCANNER WITH PIC INPUT AND NEAR-EYE DISPLAY BASED THEREON
A beam scanner and a display device is based on a photonic integrated circuit coupling light to a pair of opposed reflectors. One reflector is tiltable and has an opening through which the light is coupled, and the other reflector is configured to focus light, e.g. a concave reflector. A polarization folding configuration is used to cause the focused light propagate through the opening in the first reflector, get collimated by the second reflector, get scanned by the first reflector, and propagate through the second reflector to a pupil-replicating lightguide which provides multiple laterally offset parallel portions of the scanned beam.
G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
A system is adapted to access (910) a first mask associated with a first color component and a first pixel in an image, and a second mask associated with a second color component and a second pixel in the image, to access (920) first component values of the first color component in a first pixel region containing the first pixel, and second component values of the second color component in a second pixel region containing the second pixel, to modify the first component values using the first mask, and the second component values using the second mask (930) and to cause (940) the modified first and second component values to be displayed by light-emitting elements of the first and second color components. The first and second masks may be generated based on relative positions of the first light-emitting elements and the second light-emitting elements.
G09G 3/32 - 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 semiconductive, e.g. using light-emitting diodes [LED]
H04N 9/31 - Projection devices for colour picture display
An optical transformer includes a plurality of light emitters, a plurality of photovoltaic cells positioned to receive light from at least a first subset of the plurality of light emitters, the plurality of photovoltaic cells including at least a first photovoltaic cell and a second photovoltaic cell, and one or more optically triggered switches positioned to receive light from at least a second subset of the plurality of light emitters, the one or more optically triggered switches including at least a first optically triggered switch electrically coupled to the first photovoltaic cell and the second photovoltaic cell. A method of operating the optical transformer is also described.
H02M 3/00 - Conversion of dc power input into dc power output
H02M 3/22 - Conversion of dc power input into dc power output with intermediate conversion into ac
H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
A displacement sensor measures capacitance between a rotor-stator pair. The displacement sensor includes a plurality of stators coupled to a first object. The plurality of stators is oriented parallel to an axis of motion between the first object and a second object. The displacement sensor further includes a plurality of rotors coupled to the second object. The plurality of rotors is oriented parallel to the axis of motion. Each rotor of the plurality of rotors is aligned with and configured to receive a corresponding stator of the plurality of stators to create a respective rotor-stator pair. Capacitance between the rotor-stator pairs change as a function of position of the first object relative to the second object along the axis of motion. An amount of displacement of the first object relative to the second object is determined based in part on the capacitance values.
G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
patents
