DE69735835D1 - Dekodierer variabler Länge und Verfahren zur Dekodierung zweier Kodewörter pro Takt - Google Patents

Dekodierer variabler Länge und Verfahren zur Dekodierung zweier Kodewörter pro Takt

Info

Publication number
DE69735835D1
DE69735835D1 DE69735835T DE69735835T DE69735835D1 DE 69735835 D1 DE69735835 D1 DE 69735835D1 DE 69735835 T DE69735835 T DE 69735835T DE 69735835 T DE69735835 T DE 69735835T DE 69735835 D1 DE69735835 D1 DE 69735835D1
Authority
DE
Germany
Prior art keywords
decoding
variable length
length decoder
per clock
codewords per
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69735835T
Other languages
English (en)
Other versions
DE69735835T2 (de
Inventor
Richard Sita
Edward M Brosz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE69735835D1 publication Critical patent/DE69735835D1/de
Application granted granted Critical
Publication of DE69735835T2 publication Critical patent/DE69735835T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • H03M7/425—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory for the decoding process only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
DE69735835T 1996-03-29 1997-03-20 Dekodierer variabler Länge und Verfahren zur Dekodierung zweier Kodewörter pro Takt Expired - Fee Related DE69735835T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US623651 1996-03-29
US08/623,651 US5841380A (en) 1996-03-29 1996-03-29 Variable length decoder and method for decoding two codes per clock cycle

Publications (2)

Publication Number Publication Date
DE69735835D1 true DE69735835D1 (de) 2006-06-14
DE69735835T2 DE69735835T2 (de) 2006-10-19

Family

ID=24498899

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69735835T Expired - Fee Related DE69735835T2 (de) 1996-03-29 1997-03-20 Dekodierer variabler Länge und Verfahren zur Dekodierung zweier Kodewörter pro Takt

Country Status (6)

Country Link
US (1) US5841380A (de)
EP (1) EP0798931B1 (de)
JP (2) JP3737599B2 (de)
KR (1) KR100276037B1 (de)
CN (1) CN1135846C (de)
DE (1) DE69735835T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU728882B2 (en) * 1997-04-30 2001-01-18 Canon Kabushiki Kaisha Compression
US6215424B1 (en) * 1998-12-16 2001-04-10 Thomson Licensing S.A. System for variable length codeword processing suitable for video and other applications
US6771824B1 (en) * 1999-12-28 2004-08-03 Lucent Technologies Inc. Adaptive variable length decoding method
DE60100416T2 (de) * 2000-04-28 2004-06-09 Matsushita Electric Industrial Co., Ltd., Kadoma Dekoder für Kode variabler Länge
GB0124882D0 (en) * 2001-10-17 2001-12-05 Koninkl Philips Electronics Nv Improved variable length decoder
KR100486251B1 (ko) * 2002-08-03 2005-05-03 삼성전자주식회사 가변 길이 코드 복호화 장치 및 방법
US7283591B2 (en) * 2003-03-28 2007-10-16 Tarari, Inc. Parallelized dynamic Huffman decoder
JP4617644B2 (ja) 2003-07-18 2011-01-26 ソニー株式会社 符号化装置及び方法
US6956511B2 (en) * 2004-01-06 2005-10-18 Sharp Laboratories Of America, Inc. Multi-symbol/coefficient decode operation for Huffman codes
US7830964B2 (en) * 2004-11-24 2010-11-09 Lsi Corporation Method and/or apparatus for parsing compressed video bitstreams
US8630354B2 (en) * 2006-06-16 2014-01-14 Intel Corporation Hardware accelerated compressed video bitstream escape code handling
JP5075136B2 (ja) * 2009-01-16 2012-11-14 キヤノン株式会社 復号装置及びその制御方法
JP5075135B2 (ja) * 2009-01-16 2012-11-14 キヤノン株式会社 復号装置及びその制御方法
US20110149338A1 (en) * 2009-12-22 2011-06-23 Holley Michael J Parallel decode for run length limited encoded datastreams
JP2011139128A (ja) * 2009-12-25 2011-07-14 Samsung Electronics Co Ltd 可変長符号復号装置
CN102740066B (zh) * 2011-04-01 2015-06-17 富士通株式会社 Cavlc解码方法和系统
JP2013016897A (ja) 2011-06-30 2013-01-24 Toshiba Corp 可変長符号復号装置、符号システムおよび可変長符号復号方法
US9252805B1 (en) * 2015-03-28 2016-02-02 International Business Machines Corporation Parallel huffman decoder
CN110383844A (zh) * 2018-05-30 2019-10-25 深圳市大疆创新科技有限公司 变长解码方法与装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03145223A (ja) * 1989-10-30 1991-06-20 Toshiba Corp 可変長符号復調装置
US5173695A (en) * 1990-06-29 1992-12-22 Bell Communications Research, Inc. High-speed flexible variable-length-code decoder
US5225832A (en) * 1992-02-13 1993-07-06 Industrial Technology Research Institute High speed variable length decoder
US5245338A (en) * 1992-06-04 1993-09-14 Bell Communications Research, Inc. High-speed variable-length decoder
US5325092A (en) * 1992-07-07 1994-06-28 Ricoh Company, Ltd. Huffman decoder architecture for high speed operation and reduced memory
JP3136796B2 (ja) * 1992-09-24 2001-02-19 ソニー株式会社 可変長符号デコーダ
JP2746109B2 (ja) * 1994-03-09 1998-04-28 日本電気株式会社 ハフマン符号復号化回路

Also Published As

Publication number Publication date
JPH1065549A (ja) 1998-03-06
JP2006042336A (ja) 2006-02-09
CN1135846C (zh) 2004-01-21
CN1171699A (zh) 1998-01-28
EP0798931A2 (de) 1997-10-01
JP3737599B2 (ja) 2006-01-18
KR970068648A (ko) 1997-10-13
DE69735835T2 (de) 2006-10-19
JP4023548B2 (ja) 2007-12-19
EP0798931A3 (de) 2000-11-15
EP0798931B1 (de) 2006-05-10
US5841380A (en) 1998-11-24
KR100276037B1 (ko) 2000-12-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP

8339 Ceased/non-payment of the annual fee