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| Number | Title | Issue Date |
| 8107529 | Coding device, coding method, program of coding method, and recording medium recorded with program of coding method A coding device makes a GOP setting to input image data, and applies a coding process to the input image data on a macroblock basis successively by intra and inter prediction to output coded data. The device includes an orthogonal transform section; a quantization s... | 01/31/2012 |
| 7643553 | Optimal rate allocation for a group of channels The present invention relates generally to systems, methods, and computer program products for optimally allocating a fixed number of bits among a plurality of multi-media data channels. The optimal number of bits is determined by preprocessing each channel to calcu... | 01/05/2010 |
| 7373004 | Apparatus for constant quality rate control in video compression and target bit allocator thereof An apparatus for constant quality rate control in moving picture compression. First, a total activity measure for the current picture to be encoded in a set of consecutive pictures is calculated. Based on the total activity measure of the current picture and an acti... | 05/13/2008 |
| 7352811 | Data encoding apparatus and method A data encoding apparatus operable to encode a plurality of data blocks produces encoded data in accordance with at least one of a selectable target data quantity or a selectable target data quality. The apparatus comprises a plurality of encoding processors at leas... | 04/01/2008 |
| 7321624 | Bit-rate allocation system for object-based video encoding A video sequence is encoded, where the video sequence includes a background composite and foreground regions. The video sequence is encoded based on balancing bits per pixel for the background composite with bits per pixel for the foreground regions. ... | 01/22/2008 |
| 7321693 | Image processing apparatus and image processing method including adjustment of coded data to specified target size An image processing apparatus and an image processing method are disclosed for generating coded data having a desired data size at a high speed. The image processing apparatus includes a coding part, two memories, a setting part and a data size adjustment part. The ... | 01/22/2008 |
| 7305011 | Periodic broadcast and location of evolving media content with application to seminar and stroke media Techniques are provided for broadcasting history or coarse representations or both of stroke media and other media. Levels are created for media, and the levels are periodically broadcast. The levels segment the media and allow the media to be examined with details ... | 12/04/2007 |
| 7304681 | Method and apparatus for continuous focus and exposure in a digital imaging device A digital imaging device performs automatic focus and exposure adjustments based on high-resolution frames when a scene change has been detected based on the analysis of low-resolution frames. The digital imaging device reduces battery power consumption while simult... | 12/04/2007 |
| 7292634 | Image coding method and apparatus A motion detection block includes a wavelet transform section which receives a current image I1 and a reference image I2 as inputs. The motion detection section detects a motion vector using size-reduced images RI1 and RI2 generated by tr... | 11/06/2007 |
| 7277483 | Method and apparatus for rate control for constant-bit-rate finite-buffer-size video encoder A method and apparatus for rate control for a constant-bit-rate finite-buffer-size video encoder is described. Rate control is provided by adjusting the size of non-intra frames based on the size of intra frames. A sliding window approach is implemented to avoid exc... | 10/02/2007 |
| 7277484 | Image coding and decoding method and apparatus considering human visual characteristics An image coding method and apparatus considering human visual characteristics are provided. The image coding method comprises (a) modeling image quality distribution of an input image in units of scenes such that the quality of an image input in units of scenes is g... | 10/02/2007 |
| 7272185 | Moving picture encoding apparatus Data of both MPEG-2 and MPEG-4 is generated simultaneously with a small circuit scale and a small power consumption. A moving picture encoding apparatus for encoding a moving picture through motion-compensated inter-frame prediction has: a MPEG-2 encoding unit inclu... | 09/18/2007 |
| 7269136 | Methods and apparatus for avoidance of remote display packet buffer overflow The present invention manages memory buffers in a computer network system. In one embodiment, a managing system on a thin client unit modifies an amount of central processing unit (CPU) resource on the thin client unit that is granted to a server application (e.g., ... | 09/11/2007 |
| 7260826 | Resource allocation in multi-stream IP network for optimized quality of service A resource allocation of multiple compressed AV streams delivered over the Internet is disclosed that achieves end-to-end optimal quality through a multimedia streaming TCP-friendly transport (MSTFP) protocol that adaptively estimates the network bandwidth while smo... | 08/21/2007 |
| 7253831 | Video coding using multiple buffers There is provided herein a system for video encoding and decoding that uses short-term and long-term buffers. Reconstruction of each block within an image may be performed with reference to one of the buffers, so that different portions of an image, or different ima... | 08/07/2007 |
| 7206453 | Dynamic filtering for lossy compression An encoder dynamically filters information for lossy compression so as to control bitrate or quality with few sudden, dramatic changes to perceptual quality of the compressed information. For example, a video encoder regulates the level of a buffer (e.g., how full o... | 04/17/2007 |
| 7180943 | Compression of a data stream by selection among a set of compression tools A stream of raw data is compressed prior to transmission in a communication channel by a system which includes modules for choosing a current segment of the raw data stream for processing and defining a set of operators for representing data segments by a mathematic... | 02/20/2007 |
| 7152197 | Error correction of stream data A method, a device and a system of performing error correction of stream data on a data medium using an information file. The stream data can be AVI, MPEG and stream data with file offset. The data medium can be a DVD+RW, a SVCD or a memory. The method includes the ... | 12/19/2006 |
| 7148931 | Apparatus and method for signal processing in digital video system An apparatus and a method for signal processing in a digital video system. The apparatus for signal processing of a digital video system has: an input unit to receive a signal quantized for M bits; and an output unit to output a value of A for (2M−N−B... | 12/12/2006 |
| 7099389 | Rate control with picture-based lookahead window A method of rate control using a picture-based lookahead sliding window in a dual-pass transcoder/encoder compressed video architecture extracts statistics from an input video signal according to a simple compression standard, the input video signal being a compress... | 08/29/2006 |
| 7075984 | Code quantity control apparatus, code quantity control method and picture information transformation method Code quantity control based on a virtual buffer is executed by using information extracted from picture compressed information conforming to a predetermined system. Thus, a reference quantization scale can be held at a fixed value throughout a frame. As a result, it... | 07/11/2006 |
| 7068718 | Advanced method for rate control and apparatus thereof A rate control method used in encoding images is provided, including setting initial values for rate control and encoding; calculating a target encoding bit value based on the set initial values; performing rate control and encoding of a current bit stream based on ... | 06/27/2006 |
| 7058127 | Method and system for video transcoding A system for transcoding compressed video signal, including a plurality of pictures, comprising an estimator to gather information and estimate the signal characteristics about the video signal; a decoder to completely or partially decode the compressed video signal... | 06/06/2006 |
| 7058130 | Scene change detection In one embodiment, a scene change detection component of a video encoder uses motion vectors to determine whether a scene change occurs in a video sequence. The scene change detection component uses field motion vectors determined by a motion estimator and compares ... | 06/06/2006 |
| 7050640 | Wavelet zerotree image coding of ordered bits A computer system includes a memory and a processor. The memory stores a program to cause the processor to provide error data that indicate motion in an image. The processor represent each error signal as a collection of ordered bits, and the processor codes the bit... | 05/23/2006 |
| 7023915 | Adaptive rate control for digital video compression A system and method for adaptively controlling the encoded data rate in a data compression system. The system and method sets up alternative encoded bit streams for each segment of data and selects the alternative that would produce the bit rate closest to a predete... | 04/04/2006 |
| 7020204 | Adaptive method of encoding and decoding a series of pictures by transformation, and devices for implementing this method A method and a device for coding and decoding a sequence of images or pictures is disclosed. One exemplary embodiment disclosed codes by dividing each picture into blocks of picture elements. Each element of a block being represented by a digital value. Two types of... | 03/28/2006 |
| 7016407 | Pre-processing of bit rate allocation in a multi-channel video encoder A method and apparatus for bit rate allocation, or statistical multiplexing, in a multi-channel video data encoder. A pre-processor in each channel determines a bit rate need prior to compression and encoding. A control processes the bit rate need in each channel to... | 03/21/2006 |
| 6999511 | Dynamically switching quant matrix tables within an MPEG-2 encoder A digital video encoder is presented adapted for dynamically switching between sets of quantizer matrix tables without pausing encoding of a stream of video data. Two or more sets of quantizer matrix tables are held at the encoder's quantization unit and compressed ... | 02/14/2006 |
| 6982762 | Sequence adaptive bit allocation for pictures encoding A method and apparatus for encoding pictures of a moving pictures sequence according to an overall target bit-rate, such as in a MPEG video encoder. Each picture has an assigned picture coding type for which a quality factor is adaptively determined according to pas... | 01/03/2006 |
| 6970110 | Probability centrifuge algorithm with minimum laterally adiabatically-reduced Fisher information calculation A data compression algorithm which computes from a given probability density, in continuous or histogram form, a “probability centrifuge” probability density and also the Fisher information of the density. The density preserves Shannon entropy of the original de... | 11/29/2005 |
| 6968009 | System and method of finding motion vectors in MPEG-2 video using motion estimation algorithm which employs scaled frames A method of finding motion vectors for use in MPEG video encoding comprises generating, from a full frame, (i) a first scaled frame having a reduced number of pixels as compared to the full frame and (ii) a second scaled frame having a reduced number of pixels as co... | 11/22/2005 |
| 6965642 | Method and device for compressing and decompressing moving image data and information recording medium A moving image data compressor/decompressor is provided that compresses moving image data with high compressibility and high image quality maintained. The image data extractor 8 extracts image data on a partial area with large motion in a frame. The first dat... | 11/15/2005 |
| 6963610 | Moving image coding device, moving image coding method and program thereof employing pre-analysis A method of making coding images with a two-pass encode or a pre-analysis, wherein the control quantity is suitably given to a buffer. An image coding device makes compresses and codes moving images, and has a pre-analyzing unit, which exist in a constant interval, ... | 11/08/2005 |
| 6961378 | On-chip dynamic buffer level indicators for digital video encoder Method and encoder for encoding a digital video image stream. The encoding includes spatial compression of still images in the video stream and temporal compression between the still images. The spatial compression is carried out by converting a time domain image of... | 11/01/2005 |
| 6959040 | Method and apparatus for coding and decoding image data with synchronized sound data An image processing system including an image coding apparatus and an image decoding apparatus. The image coding apparatus includes an image input unit for acquiring key frames, a matching processor for generating correspondence information between the key frames, a... | 10/25/2005 |
| 6959115 | Image processing apparatus and method, and storage medium therefor Image data of plural objects are inputted, the inputted image data are encoded on an object basis, a priority order of code amount allocation is set for the objects, and encoding conditions for the objects in the encoding step are controlled in accordance with the p... | 10/25/2005 |
| 6959046 | Resynchronization method for decoding video The present invention relates to a method of resynchronization that attempts to enable a resynchronization of a compressed video data signal received by a decoder, after a transmission error has been detected in said compressed video data signal. The method o... | 10/25/2005 |
| 6950462 | Video encoding apparatus, video encoding method, and frame rate conversion apparatus When an input picture is inputted to a video interface and stored in a reordering memory, the input time is recorded utilizing a reference time generator and a frame sync signal, and a frame memory to be encoded by an encoding unit is designated using the time infor... | 09/27/2005 |
| 6947486 | Method and system for a highly efficient low bit rate video codec A system and a method for wavelet-based low bitrate video coding is provided. The system and method of this invention processes each frame of a video sequence based on its content. The discrete wavelet transform of each frame is taken separately. If the difference b... | 09/20/2005 |
