KR920011272A - 가변길이 부호화장치 - Google Patents

가변길이 부호화장치 Download PDF

Info

Publication number
KR920011272A
KR920011272A KR1019910020648A KR910020648A KR920011272A KR 920011272 A KR920011272 A KR 920011272A KR 1019910020648 A KR1019910020648 A KR 1019910020648A KR 910020648 A KR910020648 A KR 910020648A KR 920011272 A KR920011272 A KR 920011272A
Authority
KR
South Korea
Prior art keywords
block
code
last
variable length
input signal
Prior art date
Application number
KR1019910020648A
Other languages
English (en)
Other versions
KR950014511B1 (ko
Inventor
라쯔로 쥬리
마사카즈 니시노
히데끼 오오타카
Original Assignee
다니이 아끼오
마쯔시다덴기산교 가부시기가이샤
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 다니이 아끼오, 마쯔시다덴기산교 가부시기가이샤 filed Critical 다니이 아끼오
Publication of KR920011272A publication Critical patent/KR920011272A/ko
Application granted granted Critical
Publication of KR950014511B1 publication Critical patent/KR950014511B1/ko

Links

Classifications

    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M5/00—Conversion of the form of the representation of individual digits
    • H03M5/02—Conversion to or from representation by pulses
    • H03M5/04—Conversion to or from representation by pulses the pulses having two levels
    • H03M5/14—Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code
    • H03M5/145—Conversion to or from block codes or representations thereof
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

내용 없음

Description

가변길이 부호화장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예를 도시한 블록도, 제2도는 본 발명의 제2실시예를 도시한 블록도.

Claims (6)

  1. 화상 또는 음성데이터를 블록화하고, 각 블록의 데이터를 가변길이부호화해서 전송 및/또는 기록할때에, 입력신호의 값이 양 또는 음인지의 여부를 표시하는 부호비트를 입력신호로부터 분리하는 부호분리수단과, 각 블록의 최후이외의 위치에서는 나타나지 않는 특정의 비트패턴을 가진 블록의 최후의 부호어의 최후의 비트에, 상기 부호분리수단에 의해 분리된 부호비트를 할당하는 수단을 구비한 것을 특징으로 하는 가변길이부호화장치.
  2. 제1항에 있어서, 상기 가변길이부호화는, 입력신호의 연속하는 0의 계수와 이 연속하는 0에 이어서 0이 아닌 진폭값의 양자를 1개 또는 2개의 부호어로 동시에 부호화하는 것임을 특징으로 하는 가변길이부호화장치.
  3. 화상 또는 음성데이터의 입력신호를 블록화하고 각 블록의 나머지 성분으로 부터 직류성분을 분리하는 변환수단과, 각 블록내의 데이터를 가변부호화해서 전송 및/또는 기록할때에, 입력신호로부터 이 입력신호의 값이 양 또는 음인지의 여부를 표시하는 부호비트를 분리하는 부호분리수단과, 각 블록의 최후이외의 위치에서는 나타나지 않는 특정의 비트패턴을 지닌 블록의 최후의 부호어의 최후의 비트에, 상기 부호분리수단에 의해 분리된 부호비트를 할당하여 블록의 최후의 부호어의 최후의 비트가 상기 블록의 직류성분에 관한 정보를 표시할 수 있도록 하는 수단을 구비한 것을 특징으로 하는 가변길이부호화장치.
  4. 제3항에 있어서, 상기 변화수단이 직교변화을 수행하는 것을 특징으로 하는 가변길이부호화장치.
  5. 제3항에 있어서, 블록의 최후의 부호어의 최후의 비트에 할당된 부호비트가 직류성분의 최하위비트인 것을 특징으로 하는 가변길이부호화장치.
  6. 제3항에 있어서, 상기 가변길이부호하는, 입력신호의 연속하는 0의 계수와 이 연속하는 0에 이어서 0이 아닌 진폭값의 양자를 1개 또는 2개의 부호화를 동시에 부호화하는 것임을 특징으로 하는 가변길이부호화장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910020648A 1990-11-20 1991-11-20 가변길이 부호화장치 KR950014511B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2317230A JPH04185119A (ja) 1990-11-20 1990-11-20 可変長符号化装置
JP90-317230 1990-11-20

Publications (2)

Publication Number Publication Date
KR920011272A true KR920011272A (ko) 1992-06-27
KR950014511B1 KR950014511B1 (ko) 1995-12-02

Family

ID=18085929

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910020648A KR950014511B1 (ko) 1990-11-20 1991-11-20 가변길이 부호화장치

Country Status (4)

Country Link
US (1) US5166684A (ko)
EP (1) EP0487295A3 (ko)
JP (1) JPH04185119A (ko)
KR (1) KR950014511B1 (ko)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561422A (en) * 1994-05-16 1996-10-01 Daewoo Electronics Co., Ltd. Method and apparatus for variable length coding with reduced memory requirement
US5502439A (en) * 1994-05-16 1996-03-26 The United States Of America As Represented By The United States Department Of Energy Method for compression of binary data
KR0164097B1 (ko) * 1995-06-15 1999-01-15 조백제 병렬 입력 / 직렬 출력 장치 및 그 방법
CN1049309C (zh) * 1995-07-10 2000-02-09 联华电子股份有限公司 可变长度解码器的系数表缩减装置
NL1001171C2 (nl) * 1995-09-11 1997-03-13 United Microelectronics Corp Een codetabelreductie-inrichting voor variabele lengtedecoder.
US5663725A (en) * 1995-11-08 1997-09-02 Industrial Technology Research Institute VLC decoder with sign bit masking
KR100490638B1 (ko) * 1998-03-02 2005-09-26 삼성전자주식회사 디지털오디오신호의무손실부호화를위한부호화및복호화시스템
JP2001016588A (ja) * 1999-06-28 2001-01-19 Toshikazu Akama 信号処理システム
JP3944225B2 (ja) * 2002-04-26 2007-07-11 株式会社エヌ・ティ・ティ・ドコモ 画像符号化装置、画像復号装置、画像符号化方法、画像復号方法、画像符号化プログラム及び画像復号プログラム
US7181674B2 (en) * 2002-06-28 2007-02-20 Sun Microsystems, Inc. Computer system including a network employing redundant information and slicing
US7212681B1 (en) 2003-01-15 2007-05-01 Cisco Technology, Inc. Extension of two-dimensional variable length coding for image compression
US7194137B2 (en) * 2003-05-16 2007-03-20 Cisco Technology, Inc. Variable length coding method and apparatus for video compression
US7499596B2 (en) * 2004-08-18 2009-03-03 Cisco Technology, Inc. Amplitude coding for clustered transform coefficients
US7471840B2 (en) * 2004-08-18 2008-12-30 Cisco Technology, Inc. Two-dimensional variable length coding of runs of zero and non-zero transform coefficients for image compression
US7454076B2 (en) * 2004-06-15 2008-11-18 Cisco Technology, Inc. Hybrid variable length coding method for low bit rate video coding
US7492956B2 (en) * 2004-08-18 2009-02-17 Cisco Technology, Inc. Video coding using multi-dimensional amplitude coding and 2-D non-zero/zero cluster position coding
US7499595B2 (en) * 2004-08-18 2009-03-03 Cisco Technology, Inc. Joint amplitude and position coding for photographic image and video coding
US7471841B2 (en) 2004-06-15 2008-12-30 Cisco Technology, Inc. Adaptive breakpoint for hybrid variable length coding
US7454073B2 (en) * 2004-06-15 2008-11-18 Cisco Technology, Inc. Video compression using multiple variable length coding processes for multiple classes of transform coefficient blocks
US7620258B2 (en) * 2004-08-18 2009-11-17 Cisco Technology, Inc. Extended amplitude coding for clustered transform coefficients
US7680349B2 (en) 2004-08-18 2010-03-16 Cisco Technology, Inc. Variable length coding for clustered transform coefficients in video compression
US7242328B1 (en) * 2006-02-03 2007-07-10 Cisco Technology, Inc. Variable length coding for sparse coefficients
US8772412B2 (en) 2010-12-29 2014-07-08 Industrial Technology Research Institute Meta-stable state nitrogen-containing polymer
US8767824B2 (en) 2011-07-11 2014-07-01 Sharp Kabushiki Kaisha Video decoder parallelization for tiles
CN109639608B (zh) * 2018-12-18 2020-08-11 深圳市华星光电技术有限公司 数据编码的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568916A (en) * 1983-11-14 1986-02-04 Bahgat Osama A E H Variable word length encoder
US4675650A (en) * 1985-04-22 1987-06-23 Ibm Corporation Run-length limited code without DC level
ATE108587T1 (de) * 1986-09-13 1994-07-15 Philips Nv Verfahren und schaltungsanordung zur bitratenreduktion.
US4698672A (en) * 1986-10-27 1987-10-06 Compression Labs, Inc. Coding system for reducing redundancy
US4939583A (en) * 1987-09-07 1990-07-03 Hitachi, Ltd. Entropy-coding system
NL8802291A (nl) * 1988-09-16 1990-04-17 Koninkl Philips Electronics Nv Inrichting voor het verzenden van datawoorden welke een gedigitaliseerde analoog signaal vertegenwoordigen en een inrichting voor het ontvangen van de verzonden datawoorden.

Also Published As

Publication number Publication date
US5166684A (en) 1992-11-24
EP0487295A3 (en) 1992-11-25
JPH04185119A (ja) 1992-07-02
EP0487295A2 (en) 1992-05-27
KR950014511B1 (ko) 1995-12-02

Similar Documents

Publication Publication Date Title
KR920011272A (ko) 가변길이 부호화장치
KR970005575B1 (ko) 비트레이트 감소 방법 및 그 회로 장치
EP0279799B1 (en) Method and means for variable length coding
ATE198384T1 (de) Verfahren zur kodierung, dekodierung und kompression von audiodaten
KR920013385A (ko) 정보기록장치
KR940023249A (ko) 디지탈 신호의 부호화 방법, 부호화용 테이블 생성 방법, 부호화 장치 및 부호화 방법
KR870001523A (ko) 블록부호화장치
KR910005591A (ko) 적응양자화 부호화 복호화기
KR920019109A (ko) 디지탈 신호 부호화장치
KR920018722A (ko) 개량된 블록 부호화에 의한 디지탈 신호의 부호화장치
KR950024594A (ko) 가변길이부호복호회로
KR100269804B1 (ko) 가변 길이 부호화 영상 신호의 병렬 복호화 장치(apparatus for parallel decoding of variable length enchded image signals)
ES8507744A1 (es) Metodo para proporcionar una senal digital
KR20000045256A (ko) 비디오 코더의 가변 부호화기 및 이를 이용한 코딩방법
KR960705316A (ko) 신호 변조 방법, 신호 변조 장치, 신호 복조 방법 및 신호 복조 장치(Signal modulating method, signal modulating apparatus, signal demodulating method and signal demodulating apparatus)
KR940026919A (ko) 변조 방법 및 복조 장치
BR9713729A (pt) Codificação de nìveis múltiplos
ATE361631T1 (de) Präzisionsverbesserung durch einsatz von transformationskoeffizientbitebenen
KR970029015A (ko) 정보부호화장치 및 방법, 정보해독화장치 및 방법, 및 정보기록매체
HUT44881A (en) Circuit arrangement for resynchronizing broad band digital signals
KR910005690A (ko) 화상 데이타의 부호화 장치
JPS6054581A (ja) 差分符号化装置
JPH0813134B2 (ja) ブロック化エントロピー符号化装置
JPS62108663A (ja) エントロピ−符号化方式
JPH0813132B2 (ja) ブロック化エントロピー符号化装置

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee