| Patent Number |
Title Of Patent |
Date Issued |
| RE40981 |
Adaptive variable-length coding and decoding methods for image data |
November 17, 2009 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| RE40980 |
Adaptive variable-length coding and decoding methods for image data |
November 17, 2009 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| RE40909 |
Adaptive variable-length coding and decoding methods for image data |
September 8, 2009 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| RE40783 |
Adaptive variable-length coding and decoding methods for image data |
June 23, 2009 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| RE40782 |
Adaptive variable-length coding and decoding methods for image data |
June 23, 2009 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| RE39167 |
Adaptive variable-length coding and decoding methods for image data |
July 11, 2006 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intro mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| 7616687 |
Signal compressing system |
November 10, 2009 |
| A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, and a selection signal |
| 7609760 |
Signal compressing system |
October 27, 2009 |
| A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, and a selection signal |
| 7292657 |
Signal compressing signal |
November 6, 2007 |
| A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, and a selection signal |
| 6831946 |
Device and method for coding image |
December 14, 2004 |
| Device and method for coding an image for compressing a digital video signal, including the steps of (1) transforming a spatial domain of the video signal into frequency domain, and dividing the frequency domain into subband regions having relatively much meaningful information on an |
| 6680975 |
Signal encoding and decoding system and method |
January 20, 2004 |
| A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, and a selection signal |
| 6628717 |
Lossless coding method and video compression coding device using the same |
September 30, 2003 |
| Lossless coding method and a video compression coding method using the same, wherein a digital video data inclusive of motion picture or still picture is compared to a threshold value, data greater than the threshold value, data smaller than the threshold value, and positional informatio |
| 6104439 |
Method and apparatus for motion estimation |
August 15, 2000 |
| A method for motion estimation includes steps for constructing a first image segment representing a portion of present image frame and a second image segment having a plurality of image segments of an adjacent frame, comparing said plurality of image segments of said second image segment |
| 5999111 |
Variable length encoding/decoding apparatus using re-association of symbol-codeword for variable |
December 7, 1999 |
| A variable length encoding/decoding apparatus using symbol-codeword re-association of a variable length code table includes a re-associator for storing symbol-address assignment information, address-codeword assignment information and address-counter-value assignment information, alt |
| 5937101 |
Post-processing device for eliminating blocking artifact and method therefor |
August 10, 1999 |
| A post-processing device for eliminating a blocking artifact generated upon reconstructing an image compressed by block transform operation and a method thereof minimize a blocking artifact at block boundaries by selecting a predetermined discrete cosine transform (DCT), estimating t |
| 5793897 |
Adaptive variable-length coding and decoding methods for image data |
August 11, 1998 |
| An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having differe |
| 5786780 |
Variable-length encoder and decoder using symbol/code-word re-association of a coding table |
July 28, 1998 |
| A variable-length encoder using a code table having a symbol/code-word re-association feature, which includes a first storing portion for storing previously generated code table information, a first re-associating portion for generating re-associated code table information and re-ass |
| 5729690 |
Variable length encoding method and apparatus for differential motion vector values using an imp |
March 17, 1998 |
| A variable-length coding apparatus for encoding motion vector values using improved differential motion code table variable-length-codes, wherein the differential motion vector value is the difference between the motion vector values of a single frame. A delay in the encoder delays an in |
| 5714950 |
System for variable-length-coding and variable-length-decoding digitaldata |
February 3, 1998 |
| A system for coding and decoding digital data divided into segments which includes coding the segment data into symbols according to various scanning patterns, accumulating the various lengths of variable-length-coded data, selecting a scanning pattern corresponding to a minimum accu |
| 5673363 |
Error concealment method and apparatus of audio signals |
September 30, 1997 |
| An apparatus for concealing a frame or multiple of frames where errors have occurred in a digital audio signal which is subband coded and transform coded in units of an error-correctable frame is described. The error concealment apparatus includes an error detector for receiving frequenc |
| 5657087 |
Motion compensation encoding method and apparatus adaptive to motion amount |
August 12, 1997 |
| A motion compensating encoding apparatus responsive to a motion amount adaptively generates motion-compensated pixel values for performing differential pulse code modulation of pixel values of image even when the amount of motion compensation required motion-compensated with respect to |
| 5654706 |
System for variable length decoding digital transmission data which has been compressed by selec |
August 5, 1997 |
| A system for variable-length-coding and variable-length-decoding digital data divided into a block unit of a predetermined size which includes variable-length-coding each block data according to various scanning patterns, accumulating the various lengths of variable-length-coded data, |
| 5638125 |
Quantization step size control apparatus using neural networks |
June 10, 1997 |
| An apparatus for controlling a quantization step size for use in an encoder which divides one image frame into first blocks and encodes the divided first blocks and transmits the encoded data at a constant transmission rate. The apparatus includes a forward analyzer for detecting image |
| 5621405 |
Variable-length decoding apparatus using relative address |
April 15, 1997 |
| A variable-length decoding apparatus outputs symbol data corresponding to variable-length data. The data may be presented in units of a block having a predetermined magnitude. The apparatus has a memory composed of a plurality of storage regions for outputting information. Each storage |
| 5614959 |
Method and apparatus for motion estimation |
March 25, 1997 |
| A method and apparatus for motion estimation in accordance with the present invention compares image signals of image blocks within a previous frame corresponding to a motion vector detected among error values used for detecting the motion vector of a pixel unit and surrounding image blo |
| 5602549 |
System for variable length decoding digital transmission data which has been compressed by selec |
February 11, 1997 |
| A system for variable-length-coding and variable-length-decoding digital data divided into a block unit of a predetermined size which includes variable-length-coding each block data according to various scanning patterns, accumulating the various lengths of variable-length-coded data, |
| 5583657 |
Method and apparatus for scanning image data |
December 10, 1996 |
| The present invention relates to a method of and an apparatus for scanning an N.times.N image signal in a particular direction depending upon an energy distribution of the two-dimensional data. The invention involves scanning image signal transform coefficients of an N.times.N block usin |
| 5528628 |
Apparatus for variable-length coding and variable-length-decoding using a plurality of Huffman c |
June 18, 1996 |
| An apparatus for variable-length-coding input symbols using a plurality of variable-length-code tables includes N variable-length-code tables each having a symbol-codeword association different from the others according to statistics regarding the symbols and a variable-length-coding dev |
| 5497153 |
System for variable-length-coding and variable-length-decoding digital data for compressing tran |
March 5, 1996 |
| A system for variable-length-coding and variable-length-decoding digital data divided into a block unit of a predetermined size which includes variable-length-coding each block data according to various scanning patterns, accumulating the various lengths of variable-length-coded data, |
| 5495244 |
Device for encoding and decoding transmission signals through adaptive selection of transforming |
February 27, 1996 |
| A device is provided for encoding and decoding transmitted signals through adaptive selection of different transform methods. An original signal or a predicted error signal having at least one dimension is input in parallel to a plurality of different transforms. The total energy level o |
| 5491509 |
Forced intra-frame coding method |
February 13, 1996 |
| A forced intra-frame coding method for a video processing system includes steps by which video data is coded in the vertical direction of a frame while coding is performed to permit production of forcibly intra-frame coded macro block lines maintaining a predetermined vertical interval. |
| 5489949 |
Method and apparatus for motion estimation |
February 6, 1996 |
| A method for motion estimation includes steps for comparing image signals of image blocks within a previous frame corresponding to a motion vector detected among error values used for detecting the motion vector of a pixel unit and surrounding image blocks which are generated by moving t |
| 5488637 |
Decoding method and apparatus having optimum decoding paths |
January 30, 1996 |
| A decoding method and apparatus having an optimum decoding path includes a Viterbi decoder having an overlapping function in which the input signal is moved in units of the window movement distance of at least one symbol and the code sequence is decoded in units representing a decoding d |
| 5475433 |
Fuzzy-controlled coding method and apparatus therefor |
December 12, 1995 |
| A fuzzy-controlled coding method and apparatus thereof wherein quantization step size which is determined by values of image complexity, buffer fullness, motion vector and picture brightness, is controlled by using a fuzzy reasoning and defuzzification, enables properly dealing with the |
| 5467086 |
Apparatus and method of coding/decoding video data |
November 14, 1995 |
| A method and apparatus for coding and decoding video data including a still image or active image on an intraframe basis. The coding system defines a search area composed of reconstructed data blocks and determines which one of the blocks within the search area has a pattern similar to a |
| 5428395 |
Encoding and decoding method and apparatus thereof using a variable picture partitioning techniq |
June 27, 1995 |
| An encoding and decoding system in which video data is partitioned into blocks, each of which has a predetermined dimension, and the partitioned block is encoded and decoded. To suppress blocking artifacts which occur at the boundary portions of the blocks, the positions of the partition |
| 5392073 |
Motion estimating device for variable length encoded data |
February 21, 1995 |
| An apparatus for digitally encoding/decoding data including pictorial images and sounds for use in High Definition Television (HDTV), High Definition-Video Tape Recorder (HD-VCR), digital VCR, digital camcorder, multimedia, videophone, and video conference type applications. The appa |
| 5384849 |
Apparatus and method for encoding/decoding data including the suppression of blocking artifacts |
January 24, 1995 |
| A method and apparatus for removing blocking artifacts in an encoder/decoder system. The encoder includes a delay device for delaying original input frame data, a decoder for decoding the compressed data and outputting the restored frame data, and a blocking artifact measurer which r |
