MX9804702A - Un aparato de modulacion digital, un metodo de modulacion digital y un medio de grabacion para lo mismo. - Google Patents

Un aparato de modulacion digital, un metodo de modulacion digital y un medio de grabacion para lo mismo.

Info

Publication number
MX9804702A
MX9804702A MX9804702A MX9804702A MX9804702A MX 9804702 A MX9804702 A MX 9804702A MX 9804702 A MX9804702 A MX 9804702A MX 9804702 A MX9804702 A MX 9804702A MX 9804702 A MX9804702 A MX 9804702A
Authority
MX
Mexico
Prior art keywords
digital modulation
code words
runlength
recording medium
words
Prior art date
Application number
MX9804702A
Other languages
English (en)
Inventor
Shin-Ichi Tanaka
Toshiyuki Shimada
Tadashi Kojima
Hoichi Hirayama
Yoshiaki Moriyama
Fumiko Yokogawa
Takao Arai
Toshifumi Takeuchi
Original Assignee
Matsushita Electric Ind Co Ltd
Toshiba Kk
Pioneer Electronic Corp
Hitachi 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 Ind Co Ltd, Toshiba Kk, Pioneer Electronic Corp, Hitachi Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of MX9804702A publication Critical patent/MX9804702A/es

Links

Classifications

    • 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
    • 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
    • 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)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

Este aparato de modulacion digital (DMA) incluye tablas de ROM (201a, 201b, 201c y 201d) para almacenar diferentes tablas de conversion (Tp(m) y Ts(m)) que contienen las palabras del codigo (C) con longitud de recorrido limitada, correspondiente a las palabras del dato (D); memorias de la longitud de recorrido final (203a y 203b) y evaluadores (204a y 204b) para determinar si las condiciones con longitud de recorrido limitada se satisfacen en la interconexion entre dos palabras del codigo consecutivas cuando se suministran las palabras del dato (D(i)) que se van a convertir; y un controlador DSV 108 para almacenar cada una de las palabras del codigo (C1(i) y C2(i)) que pueden seleccionarse de dos tablas de conversion (Tp(1) y Tp(4)) hacia las memorias intermedias (105a y 105b) cuando se satisfacen estas condicionantes con longitud de recorrido limitada, y seleccionar las palabras del codigo (C(i)) que tengan mayor efecto para suprimir el componente de baja frecuencia en la señal obtenida cuando las palabras del codigo (C(i)) se convierten mediante NRZI.
MX9804702A 1995-12-13 1998-06-11 Un aparato de modulacion digital, un metodo de modulacion digital y un medio de grabacion para lo mismo. MX9804702A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32416995A JP3339539B2 (ja) 1995-12-13 1995-12-13 デジタル変調装置、その方法及び記録媒体

Publications (1)

Publication Number Publication Date
MX9804702A true MX9804702A (es) 1998-10-31

Family

ID=18162876

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9804702A MX9804702A (es) 1995-12-13 1998-06-11 Un aparato de modulacion digital, un metodo de modulacion digital y un medio de grabacion para lo mismo.

Country Status (11)

Country Link
US (1) US5917857A (es)
EP (1) EP0867073B1 (es)
JP (1) JP3339539B2 (es)
KR (1) KR100400240B1 (es)
CN (1) CN1134110C (es)
DE (1) DE69629490T2 (es)
HK (1) HK1016366A1 (es)
MX (1) MX9804702A (es)
MY (1) MY120916A (es)
TW (1) TW402718B (es)
WO (1) WO1997022182A1 (es)

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KR100726083B1 (ko) * 2000-04-14 2007-06-08 엘지전자 주식회사 광기록매체와 그의 데이터 변/복조 방법 및 장치
KR100372923B1 (ko) * 2000-05-02 2003-02-25 대우전자주식회사 고밀도 디브이디를 위한 변조방법
KR100424482B1 (ko) * 2000-06-22 2004-03-24 엘지전자 주식회사 일련의 데이터 워드를 변조신호로 변환하는 방법 및 장치
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KR100531781B1 (ko) * 2001-03-26 2005-11-29 엘지전자 주식회사 디지털 데이터 변조 방법/장치 및 이를 이용하여 생성된변조된 데이터 기록매체
KR100421004B1 (ko) * 2001-04-20 2004-03-03 삼성전자주식회사 코드 생성 및 배치 방법
KR100424483B1 (ko) * 2001-05-14 2004-03-24 엘지전자 주식회사 일련의 데이터 워드를 변조신호로 변환하는 방법 및 장치
KR100817936B1 (ko) * 2001-05-14 2008-03-31 엘지전자 주식회사 일련의 데이터 워드를 변조신호로 변환하는 방법 및 장치
CN100428633C (zh) * 2001-06-29 2008-10-22 日本胜利株式会社 数字信号的调制方法及调制装置
KR100462594B1 (ko) * 2001-07-16 2004-12-20 삼성전자주식회사 외부장치의 동작 마진을 향상시키고 ｄｖｄ－ｒａｍ과ｄｖｄ－ｒ／ｒｗ에 겸용으로 사용되는 디지털 변조장치및 방법
CA2458540A1 (en) * 2001-09-10 2003-03-20 Koda Investments Limited Coding method and device
DE10163556A1 (de) * 2001-12-21 2003-08-07 Thomson Brandt Gmbh Verfahren zum Kodieren eines Datenstroms
KR100513328B1 (ko) * 2001-12-21 2005-09-07 엘지전자 주식회사 일련의 데이터 워드를 변조신호로 변환하는 장치 및 방법
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
US7317408B2 (en) 2003-05-13 2008-01-08 Matsushita Electric Industrial Co., Ltd. Digital modulation apparatus and digital modulation method
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JP4425918B2 (ja) 2003-08-05 2010-03-03 エルジー エレクトロニクス インコーポレイティド 追記型光ディスク、光ディスクに管理情報を記録し再生する方法及び装置
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Also Published As

Publication number Publication date
KR19990071691A (ko) 1999-09-27
DE69629490D1 (de) 2003-09-18
MY120916A (en) 2005-12-30
TW402718B (en) 2000-08-21
CN1204424A (zh) 1999-01-06
JP3339539B2 (ja) 2002-10-28
JPH09162744A (ja) 1997-06-20
KR100400240B1 (ko) 2003-12-18
EP0867073B1 (en) 2003-08-13
US5917857A (en) 1999-06-29
EP0867073A1 (en) 1998-09-30
CN1134110C (zh) 2004-01-07
WO1997022182A1 (en) 1997-06-19
HK1016366A1 (en) 1999-10-29
DE69629490T2 (de) 2004-06-24

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