Abstract

A side airbag device is provided, which is capable of increasing an energy absorption amount while suppressing the load on an occupant. The side airbag device includes: a bag-shaped cushion; an inflator provided on a vehicle rear side inside the cushion; an inner tube that surrounds the inflator; an upper opening and a lower opening formed in the inner tube; a tether that extends toward a vehicle front side from the inner tube to partition the vehicle front side of the inside of the cushion into a chest restraining portion and a waist restraining portion; a void portion provided inside the cushion on the vehicle front side of the tether; and a vent hole formed near the void portion. The upper opening has a smaller opening area than the lower opening, and the tether is inclined downward toward the vehicle front side from the vehicle rear side.

IPC Classes  ?

• B60R 21/239 - Inflatable members characterised by their venting means
• B60R 21/231 - Inflatable members characterised by their shape, construction or spatial configuration
• B60R 21/233 - Inflatable members characterised by their shape, construction or spatial configuration comprising two or more bag-like members, one within the other
• B60R 21/2338 - Tethers

Abstract

The present invention provides a nozzle seamless splice mechanism and an adjustment method for the same, and belongs to a field of printing machinery technology. The nozzle seamless splice mechanism and the adjustment method for the same may solve the problems of nozzles orifices stagger, reduced printing width or blankness exposed in the middle caused by the causes such as the fabrication error, the personal error, etc with respect to the existing nozzles. The nozzle seamless splice mechanism of the present invention comprises: splice mechanism comprising: a micro-device for detecting coordinates of orifices of nozzles; a nozzle adjustment base for fixing nozzles; a nozzle bottom plate connected with said nozzle adjustment base adjustably. The nozzle seamless splice mechanism of the present invention has a low cost, high adjustment efficiency, and achieves digitized adjustment.

IPC Classes  ?

• B41J 2/145 - Arrangement thereof
• B41J 2/16 - Production of nozzles
• B41J 25/00 - Actions or mechanisms not otherwise provided for
• B05B 15/68 - Arrangements for adjusting the position of spray heads

Abstract

An image printing method and printer is provided. The method comprises obtaining an original data file of an image to be printed from a database; dividing the original data file into a plurality of first data files and storing the first data files in a plurality of first memory blocks correspondingly; receiving an image printing request, the image printing request carrying first position information of the image to be printed; determining from its position information of the image to be printed second position information contained in the first position information, and filling a first data file corresponding to the second position information to a second memory block from the first memory block where the first data file is located through memory mapping mechanism to form a second data file to be printed; and printing and outputting the second data file in the second memory block.

IPC Classes  ?

• G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
• G06F 3/12 - Digital output to print unit

Abstract

Provided are a raster processing method and apparatus of a transparent Form. The method comprising: determining a reusable transparent Form in a page description file; performing syntax interpretation on the transparent Form to obtain a reuse type and position information of the transparent Form; generating a color block lattice, an Alpha block lattice, a Shape block lattice and their corresponding block attribute tables and block memory tables for the transparent Form, according to the reuse type and the position information, and establishing association relationships between different transparent Forms in the page description file; computing on the generated data information to obtain and buffer assembling information of the transparent Form, according to the reuse type of the transparent Form; determining an assembling manner of the transparent Form according to the reuse type of the transparent Form and assembling the transparent Form into the page to be outputted.

IPC Classes  ?

• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data
• G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
• G06F 17/22 - Manipulating or registering by use of codes, e.g. in sequence of text characters
• H04N 1/40 - Picture signal circuits

Abstract

A method and system for controlling digital printing of a secret file is provided in this invention. The method comprises: obtaining a source file to be printed; importing the source file into a secret file library; generating a printing job for the source file and adding the printing job into a job list; writing printing control information of the source file into a standard file; after the printing is started, extracting page dot matrix data of the source file from the secret file library, and processing the page dot matrix data according to the printing control information; and transmitting the processed page dot matrix data to a numerical control device. Control management may be effectively realized throughout the printing process of the secret file, and the source file and the standard file cannot be copied without some professional skills in the printing process.

IPC Classes  ?

• H04N 1/40 - Picture signal circuits
• G06F 3/12 - Digital output to print unit
• G06F 21/60 - Protecting data

Abstract

A method and an apparatus of building an intermediate character library are provided. The method comprises: acquiring an original character library which stores contour information of characters therein; dividing the characters in the original character library into character components, so as to acquire contour information of character components after division; and storing the contour information of the character components into the original character library so as to build an intermediate character library on the original character library. With the intermediate character library constructed by the method of the present invention, the font creation person can perform selecting and processing simultaneously on multiple single-contour components of a single character during creating of fonts, so that the operation process is simplified and the operation efficiency is improved.

IPC Classes  ?

• G06K 9/34 - Segmentation of touching or overlapping patterns in the image field
• G06F 17/21 - Text processing
• G06F 17/22 - Manipulating or registering by use of codes, e.g. in sequence of text characters

Abstract

A method and apparatus for establishing an ultra-large character library and a method and apparatus for displaying a character are disclosed. The displaying method comprises: intercepting by a font engine middleware a font invoking message sent from a system font engine, the font invoking message comprising a character code and a font name corresponding to a character to be displayed by an application; acquiring outline data corresponding to the character from an ultra-large character library in a non-standard format based on the character code and font name; transmitting the outline data of the character to the system font engine to enable the system font engine to display the character according to the character outline data. With this invention, the capacity of the character library may be increased and characters in the non-standard-format ultra-large character library may be recognized conveniently, thus efficiency of character retrieval and display is improved.

IPC Classes  ?

• G06T 11/60 - Editing figures and text; Combining figures or text
• G06T 1/60 - Memory management
• G06F 17/21 - Text processing
• G06F 17/22 - Manipulating or registering by use of codes, e.g. in sequence of text characters
• G06F 9/451 - Execution arrangements for user interfaces

Abstract

This invention relates to printing, and discloses a method and apparatus for variable data printing. The method comprises: obtaining a current page of a file to be printed; performing a rasterization process on the current page to obtain a current page dot matrix; determining a reference page for the current page and obtaining a reference page dot matrix corresponding to the reference page; dividing the reference page dot matrix and the current page dot matrix into dot matrix blocks having a predetermined granularity; identifying variable data blocks in the current page dot matrix based on the dot matrix blocks; dynamically adjusting the size of the variable data blocks; extracting a variable data dot matrix in the current page dot matrix splitting the current page dot matrix up into the reference page dot matrix and the variable data dot matrix and then storing and outputting them.

IPC Classes  ?

• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data
• G06F 3/12 - Digital output to print unit
• G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers

Abstract

Disclosed are a method for obtaining print processing time and an electronic device having a print function which can be connected with a printer. The method comprises: executing a print instruction to make the printer perform a print operation on a first file while the current system time of the electronic device is recorded, referred to as time1; looking up in the print folder corresponding to the printer in the electronic device whether there is a second file with the extension .SPL corresponding to the first file; when the second file is found, reading the creation time of the second file, referred to as time2; detecting in the print folder that whether the second file has been modified to a third file; and when the second file is detected to have been modified to the third file, reading the modification time of the second file, referred to as time3.

IPC Classes  ?

• G06F 3/12 - Digital output to print unit
• G06F 11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation

Abstract

A method and system of discovering and analyzing structures of user groups in a microblog is provided in this invention. The method of discovering and analyzing structures of the user groups in a microblog comprises: acquiring information on behavior data of microblog users of a target group; constructing a microblog user association network based on the information on behavior data of the microblog users of the target group; acquiring at least one maximal clique from the microblog user association network; acquiring at least one core clique based on the maximal clique; and conducting behavior analysis on the user groups in the microblog based on the acquired maximal clique and/or the acquired core clique. Using the method and system of discovering and analyzing structures of user groups in a microblog provided in this invention, complicated relationships among microblog users may be sufficiently identified and the speed of discovering and analyzing structures of user groups in a microblog may be improved to meet the demand for large scaled data processing.

IPC Classes  ?

• G06N 5/04 - Inference or reasoning models
• H04L 12/58 - Message switching systems
• G06Q 10/06 - Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• G06Q 50/00 - Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism

Abstract

The present invention relates to the technical field of printing in particular, to a frequency multiplication method and device, for solving the problem of poor quality of a printed image. One method comprises: for two adjacent pulse signals output from an encoder, determining a first kind of pulse signals and a second kind of pulse signals to be inserted between the two adjacent pulse signals according to a time interval between the two adjacent pulse signals and a frequency multiplication value corresponding to a longitudinal resolution; determining a period of the first kind of pulse signals to be inserted between the two adjacent pulse signals, and determining a period of the second kind of pulse signals to be inserted between the two adjacent pulse signals; and performing frequency multiplication processing on the two adjacent pulse signals. The embodiments of the invention further improve the printing quality of images.

IPC Classes  ?

• G06F 7/68 - Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations using pulse rate multipliers or dividers
• H03K 5/156 - Arrangements in which a continuous pulse train is transformed into a train having a desired pattern
• H03K 5/00 - Manipulation of pulses not covered by one of the other main groups of this subclass

Abstract

A method and apparatus for rate adaption of HTTP stream media is disclosed in this invention. The method comprises: acquiring from a server a stream media with a selected video rate at a client adopting the TCP protocol at its transmission layer and the HTTP protocol at its application layer, wherein the selected video rate allows an amount of buffered data to be maintained in a predetermined range in a buffer for buffering the stream media under a current download rate speed. This invention may improve user experience.

IPC Classes  ?

• G06F 15/16 - Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
• H04L 12/835 - Bitrate adaptation in active flows using buffer capacity information at the endpoints or transit nodes
• H04N 21/24 - Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth or upstream requests
• H04N 21/44 - Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs
• H04N 21/643 - Communication protocols
• H04L 29/06 - Communication control; Communication processing characterised by a protocol
• H04L 29/08 - Transmission control procedure, e.g. data link level control procedure
• H04L 12/851 - Traffic type related actions, e.g. QoS or priority

Abstract

The present application discloses methods and systems for incrementally collecting replies in a forum and belongs to the technical field of collecting network information. The method comprises periodically determining whether there is a newly-established post and a post having new replies in all forum list pages needed to be collected: if yes, extracting a main post and reply information from the newly-established post, and extracting the information of the new replies from the post having new replies. The system comprises a determining device (11) for periodically determining whether there is a newly-established post and a post having new replies in all forum list pages needed to be collected; and an extracting device (12) for extracting a main post and reply information from the newly-established post, and extracting the information of the new replies from the post having new replies. The present application can quickly, accurately and completely collect all main post/replies of a post, so that the drawback that the information of turned pages of a post are missed to be searched or cannot be searched through a general search engine may be overcome.

IPC Classes  ?

• G06F 17/30 - Information retrieval; Database structures therefor
• G06Q 10/10 - Office automation; Time management

Abstract

Methods and apparatus for embedding digital watermark information into and extracting digital watermark information from a text are disclosed. The method for embedding digital watermark information into a text comprises: creating a menu item of the digital watermark information; and embedding a binary string into a value of a predetermined attribute for the menu item of the digital watermark information, the binary string to be embedded being the digital watermark information to be embedded. According to the present invention, it is able to increase the amount of information to be embedded.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06F 21/16 - Program or content traceability, e.g. by watermarking

Abstract

The application provides method and apparatus for bidirectional typesetting. The method for bidirectional typesetting of the present application comprises: retrieving a small sample used for a document to be bi-directionally typeset; defining at least one reverse region, wherein the reverse region consists of successive characters required to be reversed in the retrieved small sample; and determining locations where the reversed characters will be located in the documents and recording the locations into a big sample.

IPC Classes  ?

• G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions
• G06F 17/21 - Text processing
• G06F 17/22 - Manipulating or registering by use of codes, e.g. in sequence of text characters

Abstract

Disclosed are a multicolor overprint control method and device applicable to an intermittent printing apparatus. According to the operating characteristic of the intermittent printing apparatus, the method solves the problems of overlap and inaccurate overprint of various colors during intermittent printing by controlling the relationship between the distance between adjacent color group modules of different colors and the motion distance between uniform segments of the intermittent printing apparatus. In addition, the method also sets different inkjet printing modes in accordance with whether the detected inkjet printing of the same color group module is in a first period, thereby solving the problems of printing media waste and discontinuous printing data. The method achieves multicolor digital inkjet printing by combining the unique motion mode of the printing media thereof, and makes printing contents flexible and changeable on the basis of guaranteeing printing efficiency.

IPC Classes  ?

• B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
• B41J 2/21 - Ink jet for multi-colour printing
• B41F 13/04 - Conveying or guiding webs through presses or machines intermittently
• B41J 2/155 - Arrangement thereof for line printing

Abstract

A print scheduling and processing method, apparatus and system are disclosed. Embodiments of the invention adopt such a method that at least one print processing apparatus satisfying a print requirement of a user is determined; upon reception of a print request sent from an idle print processing apparatus, the idle print processing apparatus sending the print request is notified of a print task of the user if it is determined that the idle print processing apparatus is included among the at least one print processing apparatus satisfying the print requirement of the user.

IPC Classes  ?

• G06F 3/12 - Digital output to print unit
• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data
• H04N 1/40 - Picture signal circuits
• H04N 1/23 - Reproducing arrangements

Abstract

The present invention provides a digital inkjet printing synchronous control device, which comprises: a storage unit, for storing data of various colored surfaces; a control unit, for controlling an interactive processing unit to perform data receiving, storage and sending as well as generation of a printing trigger signal; and the interactive processing unit, under the control of the control unit, for receiving from a front-end system of a digital inkjet printing apparatus the data of the colored surfaces, storing the received data into the storage unit, sending the stored data to a back-end system of the digital inkjet printing apparatus, generating, according to a signal from a peripheral encoder and/or color code sensor of the digital inkjet printing apparatus, printing trigger signals of the colored surfaces, and sending the printing trigger signals to the back-end system of the digital inkjet printing apparatus. Correspondingly, the present invention provides a digital inkjet printing synchronous control method. Therefore, continuous printing of pages having different sizes and multiple colored surfaces can be implemented.

IPC Classes  ?

• G06F 15/00 - Digital computers in general; Data processing equipment in general
• G06K 1/00 - Methods or arrangements for marking the record carrier in digital fashion
• G06F 3/12 - Digital output to print unit
• G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers

Abstract

th row in G. The method and apparatus according to the present application can improve the speed for generating the multi-bit depth halftone amplitude-modulation dots.

IPC Classes  ?

• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data
• H04N 1/405 - Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
• H04N 1/40 - Picture signal circuits
• G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers

Abstract

The application discloses a method for measuring the total amount of ink of an inkjet printing device. The method may include: printing a sampling figure (S10); measuring the color of the sampling figure by a measuring device (S20); and determining the total amount of ink according to the measurements (S30). The application also discloses an apparatus for measuring the total amount of ink of an inkjet printing device. The apparatus may include a printing module (10) configured to print a sampling figure; a measuring device (20) configured to measure the color of the sampling figure by a measuring device; and a determining module (30) configured to determine the total amount of ink according to the measurements. The method and the apparatus can improve the inkjet printing quality.

IPC Classes  ?

• B41J 29/393 - Devices for controlling or analysing the entire machine
• G01J 3/50 - Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
• B41J 2/175 - Ink supply systems
• B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
• G01J 3/52 - Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts

Abstract

The present application provides web information detecting method and system. The method according to the present application comprises: pre-extracting keywords from a web page; storing a corresponding relationship between the extracted keywords and a URL of the web page in a database; obtaining a source file of a web page to be detected; searching the database for keywords that have the same URL as that of the web page to be detected; comparing the searched keywords to the source file information of the web page to be detected; and determining the existence of information of the web page to be detected according to a matching degree. The present application increases the accuracy of web information detection.

IPC Classes  ?

• G06F 17/30 - Information retrieval; Database structures therefor

Abstract

The present disclosure provides a method and apparatus for acquiring a content information of a page, by acquiring an access link primary address and an access link secondary address of a website, and then determining a layout page corresponding to the website through the access link primary address and the access link secondary address, and extracting summary information of each post included in the layout page from a source code file of the layout page; and acquiring a link address of each post from the summary information, determining a post page of each post according to the link address, and extracting content information of each post from a source code file of the post page, the method disclosed in the present disclosure could acquire latest initiating post and replying post information published on the bulletin board system website can in real time, and acquire replying posts incrementally.

IPC Classes  ?

• G06F 17/22 - Manipulating or registering by use of codes, e.g. in sequence of text characters
• G06F 17/30 - Information retrieval; Database structures therefor

Abstract

An amplitude modulation screening method is provided. The method comprises a step of utilizing regular hexagon screen dots to form a threshold matrix for amplitude screening. In embodiments of the present application, an amplitude modulation screening apparatus is also provided. The apparatus may comprise a matrix module configured to constitute a threshold matrix for amplitude screening using regular hexagon screen dots. Due to the threshold matrix formed with regular hexagon screen dots, the method and apparatus of the present application resolve the problem of the screen dots in the prior art, and improve the printing quality.

IPC Classes  ?

• H04N 1/405 - Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
• 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
• G06T 11/40 - Filling a planar surface by adding surface attributes, e.g. colour or texture

Abstract

This application discloses a method for controlling jet printing positions, including: detecting a color code of an inputted paper by a color code sensor, and outputting a pulse signal when the color code is detected; configuring an expectation window where the pulse signal is expected to be generated; initiating jet printing after a predetermined delay period when the pulse signal is detected in the expectation window; and initiating jet printing after correction when no pulse signal is detected in the expectation window or the pulse signal is detected outside the expectation window. The method may improve the quality of jet printing.

IPC Classes  ?

• B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
• B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
• B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form

Abstract

The application provides a method for rasterization. According to the method, a primitive may be divided, at a position where a color abruptly changes in the primitive, into a plurality of sub-primitives with continuously and gradually changing colors. Each of the sub-primitives is then rasterized. The present application further provides an apparatus for rasterizing an image. The apparatus may comprise a dividing module configured to divide a primitive at a position where a color abruptly changes into a plurality of sub-primitives with continuously gradually changing colors. Furthermore, the apparatus may comprise a rasterizing module configure to rasterize each of the sub-primitives. The application may improve the speed of the rasterization and the quality of the processed image.

IPC Classes  ?

• G06T 11/40 - Filling a planar surface by adding surface attributes, e.g. colour or texture
• G06T 11/00 - 2D [Two Dimensional] image generation
• H04N 1/60 - Colour correction or control

Abstract

Techniques, devices and systems for publishing digital contents such as encyclopedia are provided. One method for such digital publishing includes obtaining entries of encyclopedic resource files; indexing attributes of each of the entries by using preset indexing rules; reorganizing the entries based on the attributes; and publishing the reorganized entries by applying a preset template.

IPC Classes  ?

• G06F 17/30 - Information retrieval; Database structures therefor

Abstract

The present invention discloses a method and a device for color correction for solving a problem of low color correction processing speed for images input into a computer in the prior art. A main technical solution includes: an input image is divided into no less than one image blocks; various color component values of all pixels in each image block are compared with each other, an image block with the same color component values of all pixels being regarded as a simple block, and an image block with different color component values being regarded as a complex block; and a process of color correction is performed on one pixel of the simple block, then the color correction processing result is copied to other pixels of the simple block. With the technical solution, an object of increasing processing speed can be achieved by performing simplified processing directly toward certain image parts with special features, and the color correction processing speed can be increased without general influence on the present color correction effect.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

Disclosed is a method and system for automatically testing a raster image processor. The method may identify the correctness of the bitmap output by the raster image processor to be tested by comparing an abstract code of a bitmap generated by the RIP to be tested with that generated by a reference RIP to determine whether they are consistent with each other, so as to identify the correctness and stability of the RIP to be tested. Furthermore, the test samples can be submitted automatically. Thus, the convenience and efficiency are improved with respect to the manual submitting.

IPC Classes  ?

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

Abstract

Disclosed is a pulse width control device, including: a first monostable multivibrator, for receiving a synchronization pulse, and generating a negative pulse whose width is a first preset threshold; a second monostable multivibrator, for receiving the synchronization pulse, and generating a positive pulse whose width is a second preset threshold; an inverter, for receiving the synchronization pulse, and inverting the synchronization pulse, and outputting an inverted synchronization pulse; and a flip-flop, for receiving the negative pulse, the positive pulse and the inverted synchronization pulse, and generating a synchronization pulse with a width between the first threshold and the second threshold.

IPC Classes  ?

• B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism

Abstract

Disclosed is a method for processing print jobs, comprising: determining whether a second print job being processed by an RIP is needed to pause and whether a third print job being processed by a print device is needed to pause according to a priority of a first print job requesting to be printed; storing, where the second print job is needed to pause, a processing state of the second print job and processing the first print job by the RIP; storing, where the third print job is needed to pause, a processing state of the third print job, and printing the first print job by the print device; resuming the processing for the second print job according to the stored processing state of the second print job after the first print job is processed by the RIP; and resuming the processing for the third print job according to the stored processing state of the third print job after the first print job is printed by the print device. According to the present invention, it is possible to proceed with pauses continuously, save costs and simplify manual operations.

IPC Classes  ?

• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data
• G06F 3/12 - Digital output to print unit

Abstract

A method for selecting the best mode of intra prediction coding for video coding applied in video coding and decoding field is provided. The method includes: constructing a rate distortion cost function based on an estimated rate to be encoded; computing the rate distortion costs for all predictive modes by using the constructed function, and selecting the predictive mode with the minimum rate distortion cost as the best mode of intra prediction coding according to the computing result. Accordingly, a device for selecting the best mode of intra prediction coding for video coding is provided. By the method, the selected mode is closer to the best mode selected by original rate distortion optimization model, thereby the need to code every block actually in the process of rate distortion optimization is effectively avoided.

IPC Classes  ?

• H04N 7/12 - Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal

Abstract

The invention discloses a method and a system for generating a boundary in the process of rasterizing a vector graphic as well as a method for producing the system and a method for clipping the vector graphic. The method for generating a boundary includes: segment-polylining the vector graphic and obtaining data of the line segments; obtaining data of the end pixels according to the data of the line segments; obtaining data of boundary pixels according to the data of the end pixels and the relationship between the data of the end pixels; obtaining bitmap data of the boundary pixels according to the data of the boundary pixels. The algorithm used in the invention is very simple and efficient; at the same time, the generation of the bitmap data of the boundary pixels can be carried out synchronously with the generation of bitmap data of the graphic itself. The invention can be used to be combined with a variety of scan line filling algorithms and the bitmap information of the boundary pixels can be obtained synchronously and efficiently in the process of rasterizing a vector graphic so that the quality of the output bitmap can be improved and controlled accurately.

IPC Classes  ?

• G06K 9/34 - Segmentation of touching or overlapping patterns in the image field

Abstract

Disclosed are methods and devices for processing a raster image so that the white color filled in the raster image during building the raster image can be differentiated from that contained in the figure objects presented in the page, which will be inserted into the raster image later. The method comprises building the raster image and filling the raster image with a white color; and transferring the white color in a figure object described in a page and inserting the figure object into the raster image. In this way, the white color filled in the raster image during building the raster image can be differentiated from that contained in the figure objects presented in the page, which will be inserted into the raster image later.

IPC Classes  ?

• G06T 1/00 - General purpose image data processing
• G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
• G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
• G06F 15/00 - Digital computers in general; Data processing equipment in general
• G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions
• H04N 1/40 - Picture signal circuits
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06K 9/40 - Noise filtering
• G06K 9/64 - Methods or arrangements for recognition using electronic means using simultaneous comparisons or correlations of the image signals with a plurality of references, e.g. resistor matrix
• G06K 9/36 - Image preprocessing, i.e. processing the image information without deciding about the identity of the image

Abstract

A method for rasterizing transparent pages scans each transparent page twice. The first scanning syntactically interprets a page description file of the transparent page, divides it into page blocks, and writes information of image element objects and transparency parameters into intermediate files. The second scanning reads the image element objects and the transparency parameters from the intermediate files and builds a page bitmap in blocks. A device for rasterizing transparent pages includes interpreting, dividing, file storing and building units. The interpreting unit implements syntactical interpretation. The dividing unit divides pages into transparent and nontransparent page blocks. The building unit implements rasterization according to the transparent or nontransparent page blocks, the information of image element objects and the transparent parameters to build a page bitmap in blocks. The methods and devices herein improve the efficiency of building a page bitmap and decrease memory utilization during generation of the page bitmap.

IPC Classes  ?

• H04N 1/04 - Scanning arrangements

Abstract

i. Based on the method, the capacity for storing is only required to be able to store the data of one line in an image in the scanning direction, which saves the storage for bidirectional scanning. The method can optimize the hardware used to implement error diffusion and improve the operating efficiency. Also disclosed is a system for achieving the method.

IPC Classes  ?

• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data

Abstract

The present invention relates to a method and apparatus capable of generating frequency-modulation halftone dots in high speed and belongs to the field of the digital image halftone. In the prior art, read-write operation is usually carried out many times in error rows during processing each pixel so that halftone dots are generated in low speed. In the method according to the present invention, the error generated by the current pixel is buffered in a register file and the final accumulated error values are written in the error rows only after all of the relative pixels are processed. Thus, read-write operation is carried out only once in the error rows for processing each pixel. The present invention also provides an apparatus to implement the method. The apparatus comprises an error row memory, an error buffer register file, a gray generation circuit, a threshold comparison circuit, an error generation circuit, an error buffer register file control circuit, and an error row control circuit. The method and apparatus according to the present invention decrease the steps in operation and improve the speed for generating the frequency-modulation halftone dots.

IPC Classes  ?

• G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G03G 13/04 - Exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material

Abstract

The present invention relates to an image compression and decompression method, in particular in the areas of computer image processing and data compression. The currently, the process speed for which JPEG (Joint Photographic Experts Group, a compression standard) is applied, it's not all too satisfactory. One aspect of the present invention is simplify compression process based on particular features of an image, thus achieve the aim of accelerate the processing speed. Apply the process described in the present invention, the processing speed for JPEG compression/decompression would rise, without suffers quality reduction compare to current JPEG compression/decompression method.

IPC Classes  ?

• G06K 9/36 - Image preprocessing, i.e. processing the image information without deciding about the identity of the image