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AR019600A1 - Aparato / metodo de modulacion, aparato / metodo de demodulacion y medio de presentacion de programa - Google Patents

Aparato / metodo de modulacion, aparato / metodo de demodulacion y medio de presentacion de programa

Info

Publication number
AR019600A1
AR019600A1 ARP990102573A ARP990102573A AR019600A1 AR 019600 A1 AR019600 A1 AR 019600A1 AR P990102573 A ARP990102573 A AR P990102573A AR P990102573 A ARP990102573 A AR P990102573A AR 019600 A1 AR019600 A1 AR 019600A1
Authority
AR
Argentina
Prior art keywords
data
conversion
unit
code
length
Prior art date
Application number
ARP990102573A
Other languages
English (en)
Original Assignee
Koninkl Philips Electronics Nv
Sony 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 Koninkl Philips Electronics Nv, Sony Corp filed Critical Koninkl Philips Electronics Nv
Publication of AR019600A1 publication Critical patent/AR019600A1/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
    • 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
    • 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
    • G11B2020/1453—17PP modulation, i.e. the parity preserving RLL(1,7) code with rate 2/3 used on Blu-Ray discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

[Problema] Como grabar y reproducir datos en una línea de densidad alta. [Medios para resolver el problema] Una unidad de determinacion/insercion de bit decontrol DSV 11 inserta bits de control DSV para la ejecucion de un control DSV en una cadenade datos entrantes y libera la cadena de datos a una unidad demodulacion 12. La unidad de modulacion 12 convierte la cadena de datos con una longitud de datos básica de 2 bits en un codigo de longitud variable conlongitud de codigo básica de 3 bitsde acuerdo con una tabla de conversion y libera el codigo resultante de la conversion a una unidad de codificacion NRZI 13.La tabla de conversion usada por la unidad de modulacion 12 incluye codigos de sustitucion para limitar el numero deapariciones c onsecutivas de una ejecucionmínima a un valor predeterminado y codigos de sustitucion para mantener el límite de longitud de ejecucion. Además, la tabla de conversion aplica una regla deconversion, de acuerdo con al cual el restante dela division de conteo 1 de un elemento en una cadena de datos por 2 teniendo un valor de 0 o 1 siempreserá igual al restante de la division del conteo 1 de un elemento en la cadena de palabras de codigo resultante de la conversion de la cadena dedatos por2.
ARP990102573A 1998-05-29 1999-05-31 Aparato / metodo de modulacion, aparato / metodo de demodulacion y medio de presentacion de programa AR019600A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15028098A JP3985173B2 (ja) 1998-05-29 1998-05-29 変調装置および方法、復調装置および方法、並びにデータ格納媒体

Publications (1)

Publication Number Publication Date
AR019600A1 true AR019600A1 (es) 2002-02-27

Family

ID=15493529

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990102573A AR019600A1 (es) 1998-05-29 1999-05-31 Aparato / metodo de modulacion, aparato / metodo de demodulacion y medio de presentacion de programa

Country Status (39)

Country Link
US (5) US6496541B1 (es)
EP (1) EP1000467B1 (es)
JP (1) JP3985173B2 (es)
KR (1) KR100753966B1 (es)
CN (2) CN1183681C (es)
AR (1) AR019600A1 (es)
AT (1) ATE463082T1 (es)
AU (1) AU758251B2 (es)
BG (1) BG64243B1 (es)
CA (2) CA2680404C (es)
CY (1) CY1110892T1 (es)
CZ (1) CZ303005B6 (es)
DE (1) DE69942194D1 (es)
DK (1) DK1000467T3 (es)
EA (1) EA002209B1 (es)
EE (1) EE05501B1 (es)
EG (1) EG22694A (es)
ES (1) ES2341927T3 (es)
HR (1) HRP20000050B1 (es)
HU (1) HU229922B1 (es)
ID (1) ID24969A (es)
IL (2) IL134229A (es)
LT (1) LT4754B (es)
LV (1) LV12526B (es)
ME (1) ME01711B (es)
MY (1) MY131577A (es)
NO (1) NO332391B1 (es)
NZ (1) NZ502506A (es)
PL (1) PL338300A1 (es)
PT (1) PT1000467E (es)
RO (1) RO121883B1 (es)
SI (1) SI20174B (es)
SK (1) SK288035B6 (es)
TR (1) TR200000248T1 (es)
TW (1) TW498313B (es)
UA (1) UA49081C2 (es)
WO (1) WO1999063671A1 (es)
YU (1) YU49188B (es)
ZA (1) ZA200000371B (es)

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