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Browse by Category: Main > Optical & Optics
Class Information
Number: 382/246
Name: Image analysis > Image compression or coding > Lossless compression > Huffman or variable-length coding
Description: Subject matter in which image data are encoded using a variable length code, such that the most common image data have the shortest codes.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6459391 High speed variable length decoding processor Oct. 1, 2002
6459815 Method of buffering video data in video compression system Oct. 1, 2002
6449394 Packing variable-length code bits at fixed positions Sep. 10, 2002
6445827 Image coding and decoding methods, image coding and decoding apparatuses, and recording media for image coding and decoding programs Sep. 3, 2002
6427025 Image processing with selection between reversible and irreversible compression Jul. 30, 2002
6427029 Image signal processing method and device, and storage medium Jul. 30, 2002
6421465 Method for computational graceful degradation in an audiovisual compression system Jul. 16, 2002
6418165 System and method for performing inverse quantization of a video stream Jul. 9, 2002
6411739 Image coding and decoding methods, image coding and decoding apparatuses, and recording media for image coding and decoding programs Jun. 25, 2002
6408102 Encoding/decoding device Jun. 18, 2002
6408099 Method for computational graceful degradation in an audiovisual compression system Jun. 18, 2002
6408096 Method for computational graceful degradation in an audiovisual compression system Jun. 18, 2002
6404929 Image coding and decoding methods, image coding and decoding apparatuses, and recording media for image coding and decoding programs Jun. 11, 2002
6404933 Image encoding method and apparatus thereof Jun. 11, 2002
6396958 Image transmission system and method employing compression and error correction May. 28, 2002
6388588 Encoding device and encoding method for changing code amount of compressed image data May. 14, 2002
6389175 Method for encoding digital information May. 14, 2002
6389173 Picture encoding and/or decoding apparatus and method for providing sacalability of a video object whose position changes with time and a recording medium having the same recorded thereon May. 14, 2002
6389171 Method and apparatus for a digital video cassette (DVC) decode system May. 14, 2002
6385341 Technique for decoding variable length data codes May. 7, 2002
6381371 Method and apparatus for processing image files Apr. 30, 2002
6373412 Fast JPEG huffman encoding and decoding Apr. 16, 2002
6363176 Picture data decompression apparatus Mar. 26, 2002
6360019 Table-based compression with embedded coding Mar. 19, 2002
6356660 Method for compressing raster data Mar. 12, 2002
6349149 Image coding and decoding methods, image coding and decoding apparatuses, and recording media for image coding and decoding programs Feb. 19, 2002
6347158 Method for encoding digital information Feb. 12, 2002
6345123 Image encoding/decoding method, image encoder/decoder and image encoding/decoding program recording medium Feb. 5, 2002
6343157 Image coding system, image decoding system, image processing system, image coding method, image decoding method, and image processing method Jan. 29, 2002
6330666 Multistandard video decoder and decompression system for processing encoded bit streams including start codes and methods relating thereto Dec. 11, 2001
6324306 Variable length code decoder and moving picture decoder having variable length code decoder Nov. 27, 2001
6317515 Method and apparatus for encoding and decoding a data stream using inferential techniques Nov. 13, 2001
6310647 Image format for storing digital images and including multiple application segments Oct. 30, 2001
6304676 Apparatus and method for successively refined competitive compression with redundant decompression Oct. 16, 2001
6298165 Method for improving data encoding and decoding efficiency Oct. 2, 2001
6285796 Pseudo-fixed length image compression scheme Sep. 4, 2001
6285789 Variable length code decoder for MPEG Sep. 4, 2001
6278801 Image coding and decoding methods, image coding and decoding apparatuses, and recording media for image coding and decoding programs Aug. 21, 2001
6272257 Decoder of variable length codes Aug. 7, 2001
6272178 Video data encoder and decoder Aug. 7, 2001
6266449 Information processing apparatus and method which selectively controls data encoding by monitoring amount of encoded data Jul. 24, 2001
6266419 Custom character-coding compression for encoding and watermarking media content Jul. 24, 2001
6252992 Variable length coding Jun. 26, 2001
6249614 Video compression and decompression using dynamic quantization and/or encoding Jun. 19, 2001
6243496 Data compression Jun. 5, 2001
6243032 Decode apparatus that can accommodate dynamic change in sample data attribute during decoding process Jun. 5, 2001
6239805 Method and apparatus for geometric compression of three-dimensional graphics data May. 29, 2001
6236759 Image processing apparatus May. 22, 2001
6222943 Image reading, processing and recording with quick data compression Apr. 24, 2001
6219457 Method and system for decoding data encoded in a variable length code word Apr. 17, 2001

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