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| Number | Title | Issue Date |
| 7876378 | Method and apparatus for filtering video data using a programmable graphics processor Video filtering using a programmable graphics processor is described. The programmable graphics processor may be programmed to complete a plurality of video filtering operations in a single pass through a fragment-processing pipeline within the programmable graphics... | 01/25/2011 |
| 7426315 | Method for reducing blocking artifacts A method for removing blocking artifacts from moving and still pictures, comprising classifying horizontal and vertical boundaries in each picture as blocky or non-blocky; for each blocky boundary, defining an adaptive, picture content-dependent, one-dimensional fil... | 09/16/2008 |
| 7382923 | Method and device for processing and decoding a coded digital signal The present invention concerns a method of processing a coded digital signal containing on the one hand a set of samples of different types obtained by coding a set of original samples representing physical quantities and on the other hand a set of information repre... | 06/03/2008 |
| 7369154 | Method for transmitting additional data within a video transmission The invention relates to a method for transmitting additional data within a video data transmission between a transmitter and a receiver according to the prioritized pixel transmission method, wherein the video data consist of individual pixel groups, and each pixel... | 05/06/2008 |
| 7302001 | Random access points in video encoding In a method of encoding/decoding a video sequence, which is composed of video frames, at least one video frame is divided into a set of coding blocks, and at least one of the coding blocks is encoded by intra-coding. Then a first reliable region that comprises at le... | 11/27/2007 |
| 7283587 | Distortion measurement A method, apparatus, and system for measuring a distance between two points that includes measuring a distance intermediate a first data point and a second data point in each of two dimensions and adding the absolute values of those measured distances. ... | 10/16/2007 |
| 7197234 | System and method for processing subpicture data A method is described for rendering subpicture images comprising: reading a subpicture image from a digital versatile disk (“DVD”); identifying regions within the subpicture image for which α is below a specified threshold value; and rendering on a video screen... | 03/27/2007 |
| 7076113 | Apparatus and method for adaptive spatial segmentation-based noise reducing for encoded image signal An efficient and non-iterative post processing method and system is proposed for mosquito noise reduction in DCT block-based decoded images. The post-processing is based on a simple classification that segments a picture in multiple regions such as Edge, Near Edge, ... | 07/11/2006 |
| 6999047 | Displaying video on a plasma display panel A method of displaying a video signal (Vs) with m video lines in a video field period on a plasma display panel (1) which has n display lines (Di), includes selecting (2) the n display lines (Di) in an interlaced way to subsequently select a first and ... | 02/14/2006 |
| 6970508 | Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks It is possible to produce a decoded image with a high image quality from data of the lowermost hierarchy obtained during hierarchical coding operation. An image of a first hierarchy equal to an original image is successively thinned in thinning units so that an imag... | 11/29/2005 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6937657 | Motion video signal encoder and encoding method A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video signal to a desired size of frame. If the size of encoded frames differ ... | 08/30/2005 |
| 6876385 | Image data processing method, image data processing apparatus and digital still camera This invention relates to an image data processing method or the like capable of obtaining a preferable reproduction image based on processed image data even if the image data is short of the unit of block on reading the image data from the memory means in the unit ... | 04/05/2005 |
| 6862278 | System and method using a packetized encoded bitstream for parallel compression and decompression A system and method are disclosed for parallel compression and decompression of a bitstream. For compression, the bitstream is separated into a plurality of components, and the components are encoded using a compression algorithm. Packets are then constructed from t... | 03/01/2005 |
| 6859498 | Transmitting/received data processing method for inhibiting error propagation in digital image data communications system and recording medium therefor A method of inhibiting error propagation in a bidirectional digital compressed image data communication system is provided. A method of processing transmission data to inhibit error propagation in a digital image data communication system, includes (a) inputting an ... | 02/22/2005 |
| 6859499 | Deblocking filtering apparatus and method A deblocking filtering apparatus has a D mode operation circuit for deblocking filtering defined by MPEG-4, a T mode operation circuit, an operation mode determination circuit for determining whether the D ... | 02/22/2005 |
| 6804457 | Digital video signal recorder/reproducer and transmitter When recording/reproducing a digital video signal having 1080 effective lines, an MPEG stream can be extracted on the reproducing side with a simple structure and without causing serious deterioration of the image quality, and without wastefully consuming the capaci... | 10/12/2004 |
| 6798836 | Device for transmitting television pictures and device for receiving said pictures Device for transmitting television pictures in the form of transform coefficients and motion vectors. The motion vectors of a sub-picture are converted (20) into a series of difference vectors and a reference vector. The series is subsequently applied to a va... | 09/28/2004 |
| 6778709 | Embedded block coding with optimized truncation A multi-layer embedded bitstream is generated from a subband decomposition by partitioning each subband of the decomposition into a plurality of blocks; and encoding the blocks of each subband. The blocks of each subband are coded independently of each other. Result... | 08/17/2004 |
| 6757433 | Object-based quad-tree mesh motion compensation method using greedy algorithm An object-based quad-tree mesh motion compensation method using the Greedy algorithm is provided. This method defines an object-based quad-tree mesh structure defined by extending a hierarchical grid interpolation technique, by which complicated or partial motion is... | 06/29/2004 |
| 6738087 | Method and system for transferring live video pictures from a video camera to a remote video displayer via a conventional telephone line A method for transferring live video signals from a video camera of a local system to a remote video-display system via low-bandwidth communication lines is disclosed. The method is especially useful for a fixed camera located at a predetermined location, such as a ... | 05/18/2004 |
| 6717613 | Block deformation removing filter When pixel signals included in pixel blocks forming an image are supplied, a detector detects the difference between pixel signal levels in the vicinity of block boundary of the pixel blocks. Then, a comparator compares the difference with a threshold value. An adde... | 04/06/2004 |
| 6690727 | Image processing Image processing includes storing N groups of pixels in respective memory banks, each group containing M pixel blocks of a first image and determining matches for two different pixel blocks in a second image that is temporally adjacent to the first image ... | 02/10/2004 |
| 6611274 | System method, and computer program product for compositing true colors and intensity-maped colors into a frame buffer The color of a pixel is represented in a pixel storage word, wherein color coordinate data and intensity data are coded separately in two fields of the pixel storage word, the color field and the intensity field. This permits a range of colors to be repre... | 08/26/2003 |
| 6577679 | Method and apparatus for transcoding coded picture signals from object-based coding to block-based coding A coded object-based picture signal representing a picture is transcoded to a coded block-based picture signal representing the picture by culling signal portions that represent objects not visible in the picture from the coded object-based picture signal... | 06/10/2003 |
| 6535555 | Quantizing method and device for video compression The invention concerns a method comprising a step which consists in a quantizing step relative to a pixel or group of pixels in accordance with a desired rate. The invention is characterized in that it comprises an additional step which consists in modify... | 03/18/2003 |
| 6496605 | Block deformation removing filter, image processing apparatus using the same, method of filtering image signal, and storage medium for storing software therefor A filter for removing block deformation that occurs in an image signal is disclosed. Detected are a plurality of differentials each between at least two pixel signal levels on block boundaries between pixel blocks and in the vicinity of the block boundari... | 12/17/2002 |
| 6480664 | Trick mode VTR which generates trick play data from a stream of images containing intra-pictures and predictive pictures and selects specific DCT coefficients for intra-pictures Tape formatting, tracking and trick mode data generation are disclosed for providing trick modes for compressed video stored on a video tape. The tape is formatted so that trick mode data is recorded at normal speed within certain areas delineated by pred... | 11/12/2002 |
| 6351226 | Block-by-block data compression with quantization control Data are compressed on a block-by-block basis. A frequency-transformer frequency-transforms input data to generate corresponding groups of coefficient values representing different frequency components. A quantiser operates on the groups of coefficient va... | 02/26/2002 |
| 6304295 | Region-based refresh strategy for video compression Frames in a video sequence are divided into two or more regions and a specified number of macroblocks are selected in each region for intra-coding. Depending on the particular implementation, for one or more of the regions, the intra-macroblocks are selec... | 10/16/2001 |
| 6271885 | Apparatus and method of motion-compensated predictive coding A moving picture signal is encoded by motion-compensated prediction using motion vectors for each motion-compensated block of the moving picture signal. The motion vectors are arranged into motion vector groups for each predetermined number of motion vect... | 08/07/2001 |
| 6263105 | Image processing apparatus and method A block including a subject pixel is formed from an original image. A first class information generation circuit calculates similarity between a decimated block that is obtained by decimating pixels constituting the block and a reduced block obtained by r... | 07/17/2001 |
| 6243139 | Apparatus for block-encoding input image signals There is provided an apparatus capable of preventing the image quality deterioration, in the block encoding of an image signal which has already been subjected to encoding, such as in the dubbing operation, by entering block forming information relating t... | 06/05/2001 |
| 6233017 | Multimedia compression system with adaptive block sizes A multimedia compression system for generating frame rate scalable data in the case of video, and, more generally, universally scalable data. Universally scalable data is scalable across all of the relevant characteristics of the data. In the case of vide... | 05/15/2001 |
| 6205250 | System and method for minimizing clock cycles lost to overhead data in a video decoder A video processing device capable of minimizing clock cycles lost to overhead information includes an encoder for generating first and second groups of overhead bits. The first group includes a fixed number of overhead bits and the second group includes a... | 03/20/2001 |
| 6125143 | Picture encoding device and method thereof, picture decoding device and method thereof, and recording medium A picture is divided into either one of three types of macroblocks and then encoded in such a manner that block distortion, mosquito noise and ringing are reduced while picture coding efficiency is improved.... | 09/26/2000 |
| 6125146 | Method and device for decoding coded digital video signals The invention relates to a video coding method and system including a quantization and coding sub-assembly (38) in which a quantization parameter is controlled by another parameter defined as being in direct relation with the dynamic range value of the da... | 09/26/2000 |
| 6043847 | Picture coding apparatus and decoding apparatus Representative picture extracting means apparatus extracts representative pictures from a coded input signal 101 which consists of representative pictures, motion parameters for motion compensation which refers the representative picture, and reference re... | 03/28/2000 |
| 5973745 | Video signal encoding method, video signal encoding apparatus, video signal transmitting method, and recording medium In a video signal encoding method and apparatus, a video signal transmitting method, and the recording medium, hierarchical encoding of image data implies problems in that a compressing efficiency is reduced as the number of hierarchical levels is increas... | 10/26/1999 |
| 5973707 | Scan converting method and apparatus for raster to block and block to raster using a shared block buffer and two input/output buffers, one being raster, the other scan A scan converting method of converting image data from a raster sequence scan to a block sequence scan to divide the image data into blocks each having predetermined vertical width and lateral width and converting the image data from the block sequence sc... | 10/26/1999 |
