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FR2358786A1 - METHOD AND DEVICE FOR THE CODING AND RECOVERY OF BINARY DIGITAL DATA - Google Patents

METHOD AND DEVICE FOR THE CODING AND RECOVERY OF BINARY DIGITAL DATA

Info

Publication number
FR2358786A1
FR2358786A1 FR7721061A FR7721061A FR2358786A1 FR 2358786 A1 FR2358786 A1 FR 2358786A1 FR 7721061 A FR7721061 A FR 7721061A FR 7721061 A FR7721061 A FR 7721061A FR 2358786 A1 FR2358786 A1 FR 2358786A1
Authority
FR
France
Prior art keywords
signal
data
code
signal change
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.)
Granted
Application number
FR7721061A
Other languages
French (fr)
Other versions
FR2358786B1 (en
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.)
Unisys Corp
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of FR2358786A1 publication Critical patent/FR2358786A1/en
Application granted granted Critical
Publication of FR2358786B1 publication Critical patent/FR2358786B1/fr
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
    • G11B20/14—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
    • 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

Landscapes

  • Engineering & 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)

Abstract

Technique de codage et de récupération de données binaires, effectuée en séparant la donnée binaire en mots de donnée successifs qui contiennent chacun un nombre équivalent de bits de donnée, en produisant un ou plusieurs signaux de code. Chaque signal de code correspond à une variation de signal dans l'une parmi plusieurs positions de variation de signal dans une cellule de donnée; on s'assure que des variations de signal consécutives sont séparées par la distance minimale prescrite en déterminant si une variation de signal dans une cellule de donnée est séparée par un écart inférieur à la distance minimale prescrite d'une variation de signal dans une cellule de donnée contiguë et, dans ce cas, en prenant des dispositions pour que les signaux de code relatifs à ces variations de signal soient fusionnes en un signal de code qui correspond à une variation de signal située à la limite des cellules de donnée contiguës.A technique of encoding and recovering binary data, performed by separating the binary data into successive data words which each contain an equivalent number of data bits, producing one or more code signals. Each code signal corresponds to a signal change in one of several signal change positions in a data cell; it is ensured that consecutive signal changes are separated by the prescribed minimum distance by determining whether a signal change in a data cell is separated by a deviation less than the prescribed minimum distance from a signal change in a data cell. contiguous data and, in this case, arranging for the code signals relating to these signal variations to be merged into a code signal which corresponds to a signal variation located at the boundary of the contiguous data cells.

FR7721061A 1976-07-14 1977-07-08 METHOD AND DEVICE FOR THE CODING AND RECOVERY OF BINARY DIGITAL DATA Granted FR2358786A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70519976A 1976-07-14 1976-07-14

Publications (2)

Publication Number Publication Date
FR2358786A1 true FR2358786A1 (en) 1978-02-10
FR2358786B1 FR2358786B1 (en) 1982-10-29

Family

ID=24832463

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721061A Granted FR2358786A1 (en) 1976-07-14 1977-07-08 METHOD AND DEVICE FOR THE CODING AND RECOVERY OF BINARY DIGITAL DATA

Country Status (10)

Country Link
JP (1) JPS5311011A (en)
CA (1) CA1122711A (en)
CH (1) CH629347A5 (en)
DE (1) DE2731516C2 (en)
ES (1) ES460639A1 (en)
FR (1) FR2358786A1 (en)
GB (1) GB1590404A (en)
IT (1) IT1083796B (en)
NL (1) NL7707702A (en)
SE (1) SE428255B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455401A1 (en) * 1979-04-24 1980-11-21 Sony Corp METHOD AND APPARATUS FOR MODULATING A DATA SIGNAL
EP0026699A1 (en) * 1979-10-01 1981-04-08 Thomson-Csf Method and device for coding digital data, device for decoding digital data and a transmission system comprising such a device
FR2514925A1 (en) * 1981-10-15 1983-04-22 Victor Company Of Japan MULTIPIST DIGITAL RECORDING AND PLAYING SYSTEM
FR2557344A1 (en) * 1983-10-13 1985-06-28 Optical Storage Int HIGH DENSITY CODE FOR DATA CODE RECORDING, AND ASSOCIATED RECORDING AND READING APPARATUS
US4802154A (en) * 1983-10-13 1989-01-31 Laser Magnetic Storage International Company High density codes for optical recording

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55138950A (en) * 1979-04-17 1980-10-30 Mitsubishi Electric Corp Digital signal modulation and demodulation system
WO1982000912A1 (en) * 1980-09-05 1982-03-18 Furukawa T System for coding and decoding binary data
US4544962A (en) * 1981-07-06 1985-10-01 Matsushita Electric Industrial Co., Ltd. Method and apparatus for processing binary data
NL8203575A (en) * 1982-09-15 1984-04-02 Philips Nv METHOD FOR CODING A STREAM OF DATA BITS, DEVICE FOR CARRYING OUT THE METHOD AND DEVICE FOR DECODING A STREAM DATA BITS.
JP2545817B2 (en) * 1986-12-27 1996-10-23 ソニー株式会社 Digital pulse modulation circuit
JP2615588B2 (en) * 1987-02-17 1997-05-28 ソニー株式会社 Digital pulse demodulation circuit
JP2014179964A (en) * 2013-04-16 2014-09-25 Ishida Co Ltd Encoder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482228A (en) * 1965-10-21 1969-12-02 Sperry Rand Corp Write circuit for a phase modulation system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455401A1 (en) * 1979-04-24 1980-11-21 Sony Corp METHOD AND APPARATUS FOR MODULATING A DATA SIGNAL
EP0026699A1 (en) * 1979-10-01 1981-04-08 Thomson-Csf Method and device for coding digital data, device for decoding digital data and a transmission system comprising such a device
FR2466913A1 (en) * 1979-10-01 1981-04-10 Thomson Csf METHOD AND DEVICE FOR ENCODING BINARY DATA, DEVICES FOR DECODING ENCODED DATA, AND TRANSMISSION SYSTEMS HAVING SUCH DEVICES
US4500871A (en) * 1979-10-01 1985-02-19 Thomson-Csf Method for coding binary data and a device decoding coded data
FR2514925A1 (en) * 1981-10-15 1983-04-22 Victor Company Of Japan MULTIPIST DIGITAL RECORDING AND PLAYING SYSTEM
US4533964A (en) * 1981-10-15 1985-08-06 Victor Company Of Japan, Limited Multi-track digital recording and playback system
FR2557344A1 (en) * 1983-10-13 1985-06-28 Optical Storage Int HIGH DENSITY CODE FOR DATA CODE RECORDING, AND ASSOCIATED RECORDING AND READING APPARATUS
US4802154A (en) * 1983-10-13 1989-01-31 Laser Magnetic Storage International Company High density codes for optical recording

Also Published As

Publication number Publication date
SE7708112L (en) 1978-01-15
NL7707702A (en) 1978-01-17
JPS5311011A (en) 1978-02-01
DE2731516A1 (en) 1978-02-23
CH629347A5 (en) 1982-04-15
FR2358786B1 (en) 1982-10-29
CA1122711A (en) 1982-04-27
DE2731516C2 (en) 1984-12-06
ES460639A1 (en) 1978-12-01
SE428255B (en) 1983-06-13
IT1083796B (en) 1985-05-25
GB1590404A (en) 1981-06-03
JPS6214909B2 (en) 1987-04-04

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