JPS5813020A - 符号器 - Google Patents

符号器

Info

Publication number
JPS5813020A
JPS5813020A JP57104027A JP10402782A JPS5813020A JP S5813020 A JPS5813020 A JP S5813020A JP 57104027 A JP57104027 A JP 57104027A JP 10402782 A JP10402782 A JP 10402782A JP S5813020 A JPS5813020 A JP S5813020A
Authority
JP
Japan
Prior art keywords
encoder
state
code
vector
data
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.)
Granted
Application number
JP57104027A
Other languages
English (en)
Japanese (ja)
Other versions
JPS637051B2 (https=
Inventor
ロイ・リ−・アドラ−
マ−チン・ハスナ−
ジヨン・ピ−タ−・ム−サリス
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS5813020A publication Critical patent/JPS5813020A/ja
Publication of JPS637051B2 publication Critical patent/JPS637051B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)
JP57104027A 1981-07-16 1982-06-18 符号器 Granted JPS5813020A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/283,758 US4413251A (en) 1981-07-16 1981-07-16 Method and apparatus for generating a noiseless sliding block code for a (1,7) channel with rate 2/3
US283758 1981-07-16

Publications (2)

Publication Number Publication Date
JPS5813020A true JPS5813020A (ja) 1983-01-25
JPS637051B2 JPS637051B2 (https=) 1988-02-15

Family

ID=23087432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57104027A Granted JPS5813020A (ja) 1981-07-16 1982-06-18 符号器

Country Status (4)

Country Link
US (1) US4413251A (https=)
EP (1) EP0070387B1 (https=)
JP (1) JPS5813020A (https=)
DE (1) DE3277248D1 (https=)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096746A (ja) * 1983-10-28 1985-05-30 Mitsui Alum Kogyo Kk 複合材料とその製造方法
JPS60163535A (ja) * 1984-01-20 1985-08-26 フイリツプス　エレクトロニクス　ネムローゼ　フェンノートシャップ 情報記録方法および装置
JPS61227430A (ja) * 1985-04-01 1986-10-09 Matsushita Electric Ind Co Ltd 符号変換装置
DE3825960A1 (de) * 1987-09-01 1989-03-16 Hitachi Ltd Verfahren und vorrichtung zur digitalen informationscodierung
JPH02182032A (ja) * 1988-11-14 1990-07-16 Internatl Business Mach Corp <Ibm> 信号処理方法

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US4488142A (en) * 1981-12-31 1984-12-11 International Business Machines Corporation Apparatus for encoding unconstrained data onto a (1,7) format with rate 2/3
NL8203575A (nl) * 1982-09-15 1984-04-02 Philips Nv Werkwijze voor het coderen van een stroom van databits, inrichting voor het uitvoeren van de werkwijze en inrichting voor het decoderen van een stroom databits.
US4484176A (en) * 1982-11-24 1984-11-20 Storage Technology Corporation Run length limited data encoder
US4688016A (en) * 1985-06-13 1987-08-18 International Business Machines Corporation Byte-wide encoder and decoder system for RLL (1,7) code
US4684921A (en) * 1985-06-13 1987-08-04 International Business Machines Corporation RLL (1,7) encoder with single state bit
CA1255390A (en) * 1985-06-13 1989-06-06 Wilson W. Fok Rll (1,7) encoder with single state bit
JPS62298234A (ja) * 1986-06-13 1987-12-25 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション 非対称ランレングス制限コ−ド化方法
US4737765A (en) * 1986-10-22 1988-04-12 Magnetic Peripherals Inc. 2,7 Code decoder with no more than 3 bits error propagation
JPH061608B2 (ja) * 1986-12-08 1994-01-05 富士通株式会社 デ−タの変復調装置
US4823209A (en) * 1987-11-05 1989-04-18 Magnetic Peripherals Inc. 1,7,2,3 Encoding/decoding employing 3/2 frequency division
JPH01286626A (ja) * 1988-01-18 1989-11-17 Hitachi Ltd データ符号化方式
US4870414A (en) * 1988-03-18 1989-09-26 International Business Machines Corporation Even mark modulation coding method
US4888779A (en) * 1988-03-18 1989-12-19 International Business Machines Corporation Matched spectral null trellis codes for partial response channels
US4882583A (en) * 1988-05-31 1989-11-21 International Business Machines Corporation Modified sliding block code for limiting error propagation
US5283791A (en) * 1988-08-02 1994-02-01 Cray Research Systems, Inc. Error recovery method and apparatus for high performance disk drives
US5218689A (en) * 1988-08-16 1993-06-08 Cray Research, Inc. Single disk emulation interface for an array of asynchronously operating disk drives
US5270714A (en) * 1989-09-08 1993-12-14 Fujitsu Limited Encoding and decoding circuit for run-length-limited coding
US5737632A (en) 1989-12-19 1998-04-07 Hitachi, Ltd. Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder/decoder circuit
US5311521A (en) * 1990-01-12 1994-05-10 Boris Fitingof Method and apparatus for implementing post-modulation error correction coding scheme
US5047767A (en) * 1990-05-21 1991-09-10 Eastman Kodak Company Apparatus utilizing a four state encoder for encoding and decoding A sliding block (1,7) code
US5291500A (en) * 1990-05-22 1994-03-01 International Business Machines Corporation Eight-sample look-ahead for coded signal processing channels
US5099237A (en) * 1990-07-10 1992-03-24 Research Corporation Technologies, Inc. Method and apparatus for providing maximum rate modulation or compression encoding and decoding
JPH0479421A (ja) * 1990-07-18 1992-03-12 Toshiba Corp 可変長符号化装置および可変長復号化装置
GB2260236A (en) * 1991-10-04 1993-04-07 Sony Broadcast & Communication Data encoder
GB2260238B (en) * 1991-10-04 1995-03-22 Sony Broadcast & Communication Data encoder
US5349350A (en) * 1991-10-31 1994-09-20 Integral Peripherals, Inc. Run length limited encoding/decoding system for low power disk drives
JP3047569B2 (ja) 1991-11-08 2000-05-29 松下電器産業株式会社 記録再生装置
US5317757A (en) * 1992-02-06 1994-05-31 International Business Machines Corporation System and method for finite state machine processing using action vectors
JP3224418B2 (ja) * 1992-05-21 2001-10-29 パイオニア株式会社 記録データ列２次変調方法
US5475388A (en) * 1992-08-17 1995-12-12 Ricoh Corporation Method and apparatus for using finite state machines to perform channel modulation and error correction and entropy coding
US5461631A (en) * 1992-12-15 1995-10-24 International Business Machines Corporation Method for bit resynchronization of code-constrained sequences
US5424881A (en) 1993-02-01 1995-06-13 Cirrus Logic, Inc. Synchronous read channel
US5400349A (en) * 1993-12-16 1995-03-21 National Semiconductor Corporation Fault tolerant comparator for disk drive controllers
US5544178A (en) * 1994-06-10 1996-08-06 Cirrus Logic, Inc. Method and apparatus for encoding data in a PRML class-IV digital communication channel
JP3617074B2 (ja) * 1994-06-30 2005-02-02 ソニー株式会社 データ変調装置およびデータ復調装置
US5646950A (en) * 1994-11-18 1997-07-08 Seagate Technology, Inc. Matched spectral null codes for partial response channels
US5537382A (en) * 1994-11-22 1996-07-16 Optex Corporation Partial response coding for a multi-level optical recording channel
US5675590A (en) 1994-11-23 1997-10-07 At&T Wireless Services, Inc. Cyclic trellis coded modulation
US6889356B1 (en) * 1994-11-23 2005-05-03 Cingular Wireless Ii, Llc Cyclic trellis coded modulation
US5596458A (en) * 1994-12-19 1997-01-21 Integral Peripherals, Inc. Variable zone layout for information storage disk drive
US6005725A (en) * 1994-12-19 1999-12-21 Mobile Storage Technology Inc. Variable zone layout and track pitch parameter considerations for information storage disk drive
US5659310A (en) * 1995-05-12 1997-08-19 Optex Corporation M=5 (0,2) runlength limited code for multi-level data
US5657014A (en) * 1995-05-12 1997-08-12 Optex Corporation M=7 (3,7) runlength limited code for multi-level data
US5663722A (en) * 1995-05-12 1997-09-02 Optex Corporation M=10 (3,6) runlength limited code for multi-level data
US5663723A (en) * 1995-05-12 1997-09-02 Optex Corporation M=7 (1,3) runlength limited code for multi-level data
US5680128A (en) * 1995-05-12 1997-10-21 Optex Corporation M=6(3,8) runlength limited code for multi-level data
US5668546A (en) * 1995-05-12 1997-09-16 Optex Corporation M=6 (3,6) runlength limited code for multi-level data
US5682154A (en) * 1995-05-12 1997-10-28 Optex Corporation M=4 (1,2) runlength limited code for multi-level data
US5659311A (en) * 1995-05-12 1997-08-19 Optex Corporation M=6 (2,4) runlength limited code for multi-level data
US5682155A (en) * 1995-05-12 1997-10-28 Optex Corporation M=6(4,11) runlength limited code for multi-level data
US5781130A (en) * 1995-05-12 1998-07-14 Optex Corporation M-ary (d,k) runlength limited coding for multi-level data
US5748118A (en) * 1995-05-12 1998-05-05 Optex Corporation M=7 (3,8) runlength limited code for multi-level data
US5748117A (en) * 1995-05-12 1998-05-05 Optex Corporation M=8 (1,3) runlength limited code for multi-level data
US5757293A (en) * 1995-05-12 1998-05-26 Optex Corporation M=8 (1,2) runlength limited code for multi-level data
US5670956A (en) * 1995-05-12 1997-09-23 Optex Corporation M=5 (3,7) runlength limited code for multi-level data
US5675330A (en) * 1995-05-12 1997-10-07 Optex Corporation M=5(4,11)runlength limited code for multi-level data
KR0183722B1 (ko) * 1995-07-20 1999-04-15 김광호 디지탈 신호 변조부호기 및 복호기
EP0764949A1 (en) * 1995-09-19 1997-03-26 Eastman Kodak Company Method and apparatus for run-length selective coding
US6002718A (en) * 1995-10-27 1999-12-14 Hewlett-Packard Company Method and apparatus for generating runlength-limited coding with DC control
WO1997050179A1 (en) * 1996-06-24 1997-12-31 Etom Technologies Corporation M=10 (2,10), d=3.75 runlength limited code for multi-level data
US5912636A (en) * 1996-09-26 1999-06-15 Ricoh Company, Ltd. Apparatus and method for performing m-ary finite state machine entropy coding
US5946354A (en) * 1996-10-18 1999-08-31 International Business Machines Corporation Hard disk drive read channel with half speed timing
KR100370416B1 (ko) * 1996-10-31 2003-04-08 삼성전기주식회사 고밀도 데이터의 기록/재생을 위한 부호화/복호화 방법 및 그에 따른 장치
US5923629A (en) * 1997-11-06 1999-07-13 Caleb Technology Corporation Magnetic recording encoder system for a (1,7) channel having a 2/3 coding rate
US6141783A (en) * 1998-04-10 2000-10-31 International Business Machines Corporation Error propagation limiting encoder/decoder for multilevel decision feedback equalization
US6195025B1 (en) * 1998-07-13 2001-02-27 International Business Machines Corporation Method and means for invertibly mapping binary sequences into rate 2/3 (1,K) run-length-limited coded sequences with maximum transition density constraints
US6233714B1 (en) 1998-07-29 2001-05-15 International Business Machines Corporation Generalized method and means for defining and operating a (d, k) partial-response ML detector of binary-coded sequences
US6967597B1 (en) * 2000-11-08 2005-11-22 Lg Electronics, Inc. Method and apparatus for coding information, method and apparatus for decoding information, method of fabricating a recording medium, the recording medium and modulated signal
US7342741B1 (en) 2000-02-10 2008-03-11 Esgw Holdings Limited Disk drive with variable track density
US6504493B1 (en) 2000-10-31 2003-01-07 Marvell International, Ltd. Method and apparatus for encoding/decoding data
EP1332561A4 (en) * 2000-11-11 2005-11-09 Lg Electronics Inc METHOD AND APPARATUS FOR INFORMATION CODING, METHOD AND APPARATUS FOR INFORMATION DECODING, METHOD FOR MANUFACTURING RECORDING MEDIUM, RECORDING MEDIUM, AND MODULE SIGNAL
US7188298B2 (en) * 2001-03-14 2007-03-06 Matsushita Electric Industrial Co., Ltd. Error correction encoding and decoding methods and apparatuses for DVI audio data
KR100470026B1 (ko) * 2001-07-05 2005-02-04 엘지전자 주식회사 정보를 코딩/디코딩하는 방법 및 장치
EP1988636A1 (en) 2007-05-03 2008-11-05 Deutsche Thomson OHG Method and apparatus for channel coding and decoding
EP2169833A1 (en) 2008-09-30 2010-03-31 Thomson Licensing Finite-state machine RLL coding with limited repeated minimum transition runlengths

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US3689899A (en) * 1971-06-07 1972-09-05 Ibm Run-length-limited variable-length coding with error propagation limitation
US3906485A (en) * 1973-06-13 1975-09-16 Ibm Data coding circuits for encoded waveform with constrained charge accumulation
DE2508706C2 (de) * 1974-05-02 1984-10-11 International Business Machines Corp., Armonk, N.Y. Schaltungsanordnung zur Codierung von Datenbitfolgen
US3995264A (en) * 1974-11-01 1976-11-30 International Business Machines Corporation Apparatus for encoding and decoding binary data in a modified zero modulation data code

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096746A (ja) * 1983-10-28 1985-05-30 Mitsui Alum Kogyo Kk 複合材料とその製造方法
JPS60163535A (ja) * 1984-01-20 1985-08-26 フイリツプス　エレクトロニクス　ネムローゼ　フェンノートシャップ 情報記録方法および装置
JPS61227430A (ja) * 1985-04-01 1986-10-09 Matsushita Electric Ind Co Ltd 符号変換装置
DE3825960A1 (de) * 1987-09-01 1989-03-16 Hitachi Ltd Verfahren und vorrichtung zur digitalen informationscodierung
US4914438A (en) * 1987-09-01 1990-04-03 Hitachi, Ltd. Digital information coding system
JPH02182032A (ja) * 1988-11-14 1990-07-16 Internatl Business Mach Corp <Ibm> 信号処理方法

Also Published As

Publication number Publication date
EP0070387B1 (en) 1987-09-09
JPS637051B2 (https=) 1988-02-15
EP0070387A2 (en) 1983-01-26
EP0070387A3 (en) 1985-07-03
DE3277248D1 (en) 1987-10-15
US4413251A (en) 1983-11-01

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