FR2379129A1 - Enregistrement numerique optique, et appareil pour sa lecture - Google Patents

Enregistrement numerique optique, et appareil pour sa lecture

Info

Publication number
FR2379129A1
FR2379129A1 FR7800965A FR7800965A FR2379129A1 FR 2379129 A1 FR2379129 A1 FR 2379129A1 FR 7800965 A FR7800965 A FR 7800965A FR 7800965 A FR7800965 A FR 7800965A FR 2379129 A1 FR2379129 A1 FR 2379129A1
Authority
FR
France
Prior art keywords
bit
type
reading device
optical recording
digital recording
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.)
Withdrawn
Application number
FR7800965A
Other languages
English (en)
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2379129A1 publication Critical patent/FR2379129A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR7800965A 1977-01-28 1978-01-13 Enregistrement numerique optique, et appareil pour sa lecture Withdrawn FR2379129A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76356777A 1977-01-28 1977-01-28

Publications (1)

Publication Number Publication Date
FR2379129A1 true FR2379129A1 (fr) 1978-08-25

Family

ID=25068187

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800965A Withdrawn FR2379129A1 (fr) 1977-01-28 1978-01-13 Enregistrement numerique optique, et appareil pour sa lecture

Country Status (6)

Country Link
JP (1) JPS5395603A (de)
CA (1) CA1103351A (de)
DE (1) DE2803603A1 (de)
FR (1) FR2379129A1 (de)
GB (1) GB1570799A (de)
NL (1) NL7800613A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441236A1 (fr) * 1978-11-06 1980-06-06 Philips Nv Porteur servant de milieu d'emmagasinage d'information numerique et pouvant etre explore par voie optique
FR2473769A1 (fr) * 1980-01-09 1981-07-17 Philips Nv Porteur d'information en forme de disque explorable par voie optique, et servant de milieu d'emmagasinage d'information, dispositif pour la fabrication d'un tel porteur d'information, dispositif pour l'enregistrement d'information dans un tel porteur d'information et dispositif pour la lecture de l'information d'un tel porteur
EP0096374A2 (de) * 1982-06-03 1983-12-21 News Log International Inc. Verfahren zum optischen Aufzeichnen digitaler Daten auf ein Substrat und damit hergestellter Datenaufzeichnungsträger

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8000122A (nl) * 1980-01-09 1981-08-03 Philips Nv Schijfvormige, optisch uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen en/of weergeven van datainformatie in c.q. van zo'n registratiedrager.
NL8000124A (nl) * 1980-01-09 1981-08-03 Philips Nv Inrichting voor het weergeven van digitaal gecodeerde informatie die op een optisch uitleesbare schijfvormige registratiedrager is aangebracht.
US5553047A (en) * 1980-07-16 1996-09-03 Discovision Associates System for recording digital information in a pulse-length modulation format
US5253244A (en) * 1980-07-16 1993-10-12 Discovision Associates System for recording digital information in a pulse-length modulation format
US5577015A (en) * 1980-07-16 1996-11-19 Discovision Associates System for recording digital information in a pulse-length modulation
DE10224372A1 (de) * 2002-05-24 2003-12-11 Jenoptik Automatisierungstech Verfahren zum Aufbringen und Auslesen von Informationen mittels Laser
DE102009039808A1 (de) 2009-07-06 2011-01-13 GM Global Technology Operations, Inc., Detroit Heckbodenanordnung und Rahmenstruktur einer selbsttragenden Fahrzeugkarosserie

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108261A (en) * 1960-04-11 1963-10-22 Ampex Recording and/or reproducing system
FR1437760A (fr) * 1964-04-15 1966-05-06 Itek Corp Procédé et dispositif pour le traitement de données
US3365706A (en) * 1964-04-15 1968-01-23 Gilbert W. King Photo-optical data storage and retrieval system employing error detection and error location identification components
US3501586A (en) * 1966-09-01 1970-03-17 Battelle Development Corp Analog to digital to optical photographic recording and playback system
DE2132512A1 (de) * 1971-06-30 1973-02-15 Licentia Gmbh Einrichtung zum aufzeichnen von bits mittels eines strahles auf einen aufzeichnungstraeger
FR2287817A1 (fr) * 1974-10-07 1976-05-07 Philips Nv Dispositif pour explorer un porteur d'information en forme de disque

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108261A (en) * 1960-04-11 1963-10-22 Ampex Recording and/or reproducing system
FR1437760A (fr) * 1964-04-15 1966-05-06 Itek Corp Procédé et dispositif pour le traitement de données
US3365706A (en) * 1964-04-15 1968-01-23 Gilbert W. King Photo-optical data storage and retrieval system employing error detection and error location identification components
US3501586A (en) * 1966-09-01 1970-03-17 Battelle Development Corp Analog to digital to optical photographic recording and playback system
DE2132512A1 (de) * 1971-06-30 1973-02-15 Licentia Gmbh Einrichtung zum aufzeichnen von bits mittels eines strahles auf einen aufzeichnungstraeger
FR2287817A1 (fr) * 1974-10-07 1976-05-07 Philips Nv Dispositif pour explorer un porteur d'information en forme de disque

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/75 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441236A1 (fr) * 1978-11-06 1980-06-06 Philips Nv Porteur servant de milieu d'emmagasinage d'information numerique et pouvant etre explore par voie optique
FR2473769A1 (fr) * 1980-01-09 1981-07-17 Philips Nv Porteur d'information en forme de disque explorable par voie optique, et servant de milieu d'emmagasinage d'information, dispositif pour la fabrication d'un tel porteur d'information, dispositif pour l'enregistrement d'information dans un tel porteur d'information et dispositif pour la lecture de l'information d'un tel porteur
EP0096374A2 (de) * 1982-06-03 1983-12-21 News Log International Inc. Verfahren zum optischen Aufzeichnen digitaler Daten auf ein Substrat und damit hergestellter Datenaufzeichnungsträger
EP0096374A3 (en) * 1982-06-03 1986-06-11 News Log International Inc. Method for optically encoding digital data on a substrate and the data record carrier formed thereby

Also Published As

Publication number Publication date
GB1570799A (en) 1980-07-09
JPS5395603A (en) 1978-08-22
CA1103351A (en) 1981-06-16
DE2803603A1 (de) 1978-08-03
NL7800613A (nl) 1978-08-01

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Legal Events

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