JPH0584099B2 - - Google Patents

Info

Publication number
JPH0584099B2
JPH0584099B2 JP63318674A JP31867488A JPH0584099B2 JP H0584099 B2 JPH0584099 B2 JP H0584099B2 JP 63318674 A JP63318674 A JP 63318674A JP 31867488 A JP31867488 A JP 31867488A JP H0584099 B2 JPH0584099 B2 JP H0584099B2
Authority
JP
Japan
Prior art keywords
emm
code
channel
distance
coding
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 - Lifetime
Application number
JP63318674A
Other languages
English (en)
Japanese (ja)
Other versions
JPH01256252A (ja
Inventor
Karabedo Razumiku
Hawaado Shiiigeru Hooru
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 JPH01256252A publication Critical patent/JPH01256252A/ja
Publication of JPH0584099B2 publication Critical patent/JPH0584099B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes
    • H04L25/4908—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes using mBnB codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Dc Digital Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP63318674A 1988-03-18 1988-12-19 コード化方法 Granted JPH01256252A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/169,918 US4870414A (en) 1988-03-18 1988-03-18 Even mark modulation coding method
US169918 1988-03-18

Publications (2)

Publication Number Publication Date
JPH01256252A JPH01256252A (ja) 1989-10-12
JPH0584099B2 true JPH0584099B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-11-30

Family

ID=22617755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63318674A Granted JPH01256252A (ja) 1988-03-18 1988-12-19 コード化方法

Country Status (3)

Country Link
US (1) US4870414A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0333321A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH01256252A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882583A (en) * 1988-05-31 1989-11-21 International Business Machines Corporation Modified sliding block code for limiting error propagation
DE68920739T2 (de) * 1989-08-16 1995-06-29 Ibm Daten-Kodierung für den Sofortstart von PRML-Empfängern.
JPH063943B2 (ja) * 1989-11-13 1994-01-12 インターナショナル・ビジネス・マシーンズ・コーポレーション ２進データ列の符号化方法
US5095484A (en) * 1989-11-13 1992-03-10 International Business Machines Company Corporation Phase invariant rate 8/10 matched spectral null code for PRML
JP2693256B2 (ja) * 1990-05-25 1997-12-24 富士通株式会社 記録装置用ビタビ等化器及び記録装置
US5208834A (en) * 1991-03-15 1993-05-04 International Business Machines Corporation Lexicographical encoding and decoding of state-dependent codes
US5327440A (en) * 1991-10-15 1994-07-05 International Business Machines Corporation Viterbi trellis coding methods and apparatus for a direct access storage device
US5257272A (en) * 1992-04-15 1993-10-26 International Business Machines Corporation Time-varying modulo N trellis codes for input restricted partial response channels
US5424881A (en) 1993-02-01 1995-06-13 Cirrus Logic, Inc. Synchronous read channel
JP3528929B2 (ja) * 1993-09-22 2004-05-24 ソニー株式会社 磁気記録装置
US5576707A (en) * 1994-06-10 1996-11-19 Cirrus Logic, Inc. Method and apparatus for detecting and decoding data in a PRML class-IV digital communication channel
US5537382A (en) * 1994-11-22 1996-07-16 Optex Corporation Partial response coding for a multi-level optical recording channel
US5748117A (en) * 1995-05-12 1998-05-05 Optex Corporation M=8 (1,3) 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
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
US5668546A (en) * 1995-05-12 1997-09-16 Optex Corporation M=6 (3,6) 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
US5680128A (en) * 1995-05-12 1997-10-21 Optex Corporation M=6(3,8) 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
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
US5663723A (en) * 1995-05-12 1997-09-02 Optex Corporation M=7 (1,3) 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
US5659310A (en) * 1995-05-12 1997-08-19 Optex Corporation M=5 (0,2) 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
US5659311A (en) * 1995-05-12 1997-08-19 Optex Corporation M=6 (2,4) runlength limited code for multi-level data
WO1997008685A2 (en) * 1995-08-28 1997-03-06 Philips Electronics N.V. Method and system for pattern recognition based on dynamically constructing a subset of reference vectors
US5790571A (en) * 1995-12-11 1998-08-04 Seagate Technology, Inc. Coding data in a disc drive according to a code having desired algebraic characteristics
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
JP3861409B2 (ja) * 1997-10-24 2006-12-20 ソニー株式会社 ディジタル信号再生装置
US6812867B2 (en) * 2002-06-07 2004-11-02 International Business Machines Corp. Data coding for data storage systems
US11804284B2 (en) 2021-07-22 2023-10-31 Omnitier, Inc. Modulo based genetic material alignment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4413251A (en) * 1981-07-16 1983-11-01 International Business Machines Corporation Method and apparatus for generating a noiseless sliding block code for a (1,7) channel with rate 2/3
US4502036A (en) * 1981-09-25 1985-02-26 Mitsubishi Denki Kabushiki Kaisha Encoding and decoding systems for binary data
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
US4609907A (en) * 1984-10-31 1986-09-02 International Business Machines Corporation Dual channel partial response system
US4688016A (en) * 1985-06-13 1987-08-18 International Business Machines Corporation Byte-wide encoder and decoder system for RLL (1,7) code
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

Also Published As

Publication number Publication date
EP0333321A3 (en) 1992-07-22
JPH01256252A (ja) 1989-10-12
EP0333321A2 (en) 1989-09-20
US4870414A (en) 1989-09-26

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