CA2182428C - Method and apparatus for generating dc-free sequences - Google Patents

Method and apparatus for generating dc-free sequences Download PDF

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Publication number
CA2182428C
CA2182428C CA002182428A CA2182428A CA2182428C CA 2182428 C CA2182428 C CA 2182428C CA 002182428 A CA002182428 A CA 002182428A CA 2182428 A CA2182428 A CA 2182428A CA 2182428 C CA2182428 C CA 2182428C
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CA
Canada
Prior art keywords
codeword
symbols
channel
input
codewords
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
CA002182428A
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English (en)
French (fr)
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CA2182428A1 (en
Inventor
Emina Soljanin
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.)
AT&T Corp
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AT&T IPM Corp
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Publication date
Application filed by AT&T IPM Corp filed Critical AT&T IPM Corp
Publication of CA2182428A1 publication Critical patent/CA2182428A1/en
Application granted granted Critical
Publication of CA2182428C publication Critical patent/CA2182428C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/05—Digital input using the sampling of an analogue quantity at regular intervals of time, input from a/d converter or output to d/a converter
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)
  • Error Detection And Correction (AREA)
CA002182428A 1995-08-15 1996-07-31 Method and apparatus for generating dc-free sequences Expired - Fee Related CA2182428C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US515,445 1995-08-15
US08/515,445 US5608397A (en) 1995-08-15 1995-08-15 Method and apparatus for generating DC-free sequences

Publications (2)

Publication Number Publication Date
CA2182428A1 CA2182428A1 (en) 1997-02-16
CA2182428C true CA2182428C (en) 2000-06-13

Family

ID=24051375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002182428A Expired - Fee Related CA2182428C (en) 1995-08-15 1996-07-31 Method and apparatus for generating dc-free sequences

Country Status (7)

Country Link
US (1) US5608397A (https=)
EP (1) EP0758825B1 (https=)
JP (2) JP3590209B2 (https=)
KR (1) KR100446878B1 (https=)
CA (1) CA2182428C (https=)
DE (1) DE69603053T2 (https=)
SG (1) SG43396A1 (https=)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11511283A (ja) * 1995-08-03 1999-09-28 シーゲート テクノロジー，インコーポレイテッド 整合スペクトルヌルエンコーダ／デコーダ
US5960041A (en) * 1995-09-21 1999-09-28 Lucent Technologies Inc. Method and apparatus for generating high rate codes for recording information on a magnetic medium
US5859601A (en) * 1996-04-05 1999-01-12 Regents Of The University Of Minnesota Method and apparatus for implementing maximum transition run codes
JP2853672B2 (ja) * 1996-09-11 1999-02-03 日本電気株式会社 演算処理装置
ATE224615T1 (de) * 1996-07-03 2002-10-15 Koninkl Philips Electronics Nv Übertragung und empfang eines digitalen informationssignals
US6233289B1 (en) * 1996-07-17 2001-05-15 Seagate Technolgy, Inc. High rate trellis code for partial response channels
US5910969A (en) * 1996-11-05 1999-06-08 Lucent Technologies Inc. Method of detecting DC-free sequences
US5996110A (en) * 1996-12-16 1999-11-30 Motorola, Inc. Method and apparatus for decoding a data packet
BR9815183A (pt) * 1997-04-08 2000-10-10 Motorola Inc Sistema e método para moldar de forma espectral os sinais de dados transmitidos
US6343101B1 (en) * 1998-01-16 2002-01-29 Ess Technology, Inc. Frame-based sign inversion method and system for spectral shaping for pulse-coded-modulation modems
BR9908073A (pt) * 1998-12-21 2000-10-24 Koninkl Philips Electronics Nv Dispositivo e processo para codificar uma corrente de bits de dados de um sinal fonte binário, sinal de canal binário, portadora de gravação, e, dispositivo decodificador de uma corrente de bits de dados de um sinal de canal binário
CN1298573A (zh) 1998-12-21 2001-06-06 皇家菲利浦电子有限公司 用于把n－位源字编码为相应的m－位信道字以及把m－位信道字解码为相应的n－位源字的设备
US6140947A (en) * 1999-05-07 2000-10-31 Cirrus Logic, Inc. Encoding with economical codebook memory utilization
US6456208B1 (en) * 2000-06-30 2002-09-24 Marvell International, Ltd. Technique to construct 32/33 and other RLL codes
US6504493B1 (en) 2000-10-31 2003-01-07 Marvell International, Ltd. Method and apparatus for encoding/decoding data
US7286065B1 (en) 2001-03-05 2007-10-23 Marvell International Ltd. Method and apparatus for DC-level constrained coding
US6661356B1 (en) 2001-03-05 2003-12-09 Marvell International, Ltd. Method and apparatus for DC-level constrained coding
CN1305220C (zh) * 2001-07-09 2007-03-14 希捷科技有限公司 用于抑制数字数据内低频含量的方法和装置
US6917313B1 (en) 2002-01-16 2005-07-12 Marvell International Ltd. DC-free codes
WO2004001747A2 (en) * 2002-06-20 2003-12-31 Koninklijke Philips Electronics N.V. Balanced disparity channel code for dc control
JP3757918B2 (ja) * 2002-08-20 2006-03-22 日本電気株式会社 符号化変調方法および変調装置、復調方法および復調装置
US6867713B2 (en) * 2002-09-09 2005-03-15 Seagate Technology Llc DC free code design with state dependent mapping
US6961010B2 (en) * 2003-08-13 2005-11-01 Seagate Technology Llc DC-free code design with increased distance between code words
US6989776B2 (en) * 2003-11-17 2006-01-24 Seagate Technology Llc Generation of interleaved parity code words having limited running digital sum values
US7002492B2 (en) * 2004-07-07 2006-02-21 Seagate Technology Llc High rate running digital sum-restricted code
WO2006013496A1 (en) * 2004-07-27 2006-02-09 Koninklijke Philips Electronics N.V. Encoding of data words using three or more level levels
US8139628B1 (en) 2005-01-10 2012-03-20 Marvell International Ltd. Method and device to compensate for baseline wander
US7672387B2 (en) 2005-12-05 2010-03-02 Intel Corporation Multiple input, multiple output wireless communication system, associated methods and data structures
US10917109B1 (en) * 2020-03-06 2021-02-09 Centre National De La Recherche Scientifique Methods for storing digital data as, and for transforming digital data into, synthetic DNA
US12136456B2 (en) * 2022-08-30 2024-11-05 Micron Technology, Inc. Drift compensation for codewords in memory

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170652A (en) * 1981-04-15 1982-10-20 Nec Corp Transmitting system for burst signal
US4833471A (en) * 1984-03-26 1989-05-23 Canon Kabushiki Kaisha Data processing apparatus
JPS6171751A (ja) * 1984-09-14 1986-04-12 Victor Co Of Japan Ltd 伝送信号送受信回路
JP2578754B2 (ja) * 1985-06-13 1997-02-05 松下電器産業株式会社 デイジタルデ−タ記録方法
US5016258A (en) * 1988-06-10 1991-05-14 Matsushita Electric Industrial Co., Ltd. Digital modulator and demodulator
US5022051A (en) * 1988-11-02 1991-06-04 Hewlett-Packard Company DC-free line code for arbitrary data transmission
US5438621A (en) * 1988-11-02 1995-08-01 Hewlett-Packard Company DC-free line code and bit and frame synchronization for arbitrary data transmission
JP2809832B2 (ja) * 1990-07-13 1998-10-15 株式会社東芝 符号変調方法
JPH04225625A (ja) * 1990-12-27 1992-08-14 Sony Corp ディジタル変調方式
JP3334810B2 (ja) * 1992-02-14 2002-10-15 ソニー株式会社 符号化方法、再生方法、および、再生装置
JPH05284035A (ja) * 1992-03-31 1993-10-29 Sony Corp 情報変換方法
JP3083011B2 (ja) * 1992-12-28 2000-09-04 キヤノン株式会社 データ記録方法及び装置
US5341134A (en) * 1992-12-30 1994-08-23 Datatape Incorporated Simple coding scheme for DC free channel codes of form M/N, where M=N-1 and M and N are positive integers
US5477222A (en) * 1993-05-04 1995-12-19 U.S. Philips Corporation Device for encoding/decoding N-bit source words into corresponding M-bit channel words, and vice versa
JP3240341B2 (ja) * 1993-07-06 2001-12-17 三菱電機株式会社 情報変換方法及び記録再生装置
US5450443A (en) * 1993-09-01 1995-09-12 International Business Machines Corporation Method and apparatus for constructing asymptotically optimal second order DC-free channel codes

Also Published As

Publication number Publication date
DE69603053T2 (de) 1999-12-09
KR970012100A (ko) 1997-03-29
CA2182428A1 (en) 1997-02-16
KR100446878B1 (ko) 2005-01-27
EP0758825B1 (en) 1999-06-30
US5608397A (en) 1997-03-04
DE69603053D1 (de) 1999-08-05
JPH09121169A (ja) 1997-05-06
JP3590209B2 (ja) 2004-11-17
EP0758825A1 (en) 1997-02-19
SG43396A1 (en) 1997-10-17
JP2002335160A (ja) 2002-11-22

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Effective date: 20160801