NL7800613A - Verbeterde binair gecodeerde digitale optische registratie. - Google Patents
Verbeterde binair gecodeerde digitale optische registratie.Info
- Publication number
- NL7800613A NL7800613A NL7800613A NL7800613A NL7800613A NL 7800613 A NL7800613 A NL 7800613A NL 7800613 A NL7800613 A NL 7800613A NL 7800613 A NL7800613 A NL 7800613A NL 7800613 A NL7800613 A NL 7800613A
- Authority
- NL
- Netherlands
- Prior art keywords
- binary coded
- digital optical
- coded digital
- optical registration
- improved binary
- Prior art date
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76356777A | 1977-01-28 | 1977-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7800613A true NL7800613A (nl) | 1978-08-01 |
Family
ID=25068187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7800613A NL7800613A (nl) | 1977-01-28 | 1978-01-18 | Verbeterde binair gecodeerde digitale optische registratie. |
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) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7811003A (nl) * | 1978-11-06 | 1980-05-08 | Philips Nv | Schijfvormige, optisch uitleesbare registratiedrager, als opslagmedium voor data-informatie. |
NL8000121A (nl) * | 1980-01-09 | 1981-08-03 | Philips Nv | Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager. |
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 |
US4532616A (en) * | 1982-06-03 | 1985-07-30 | News Log International, Inc. | Method for optically encoding digital data on a substrate and the data record carrier formed thereby |
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 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3108261A (en) * | 1960-04-11 | 1963-10-22 | Ampex | Recording and/or reproducing system |
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 |
FR1437760A (fr) * | 1964-04-15 | 1966-05-06 | Itek Corp | Procédé et dispositif pour le traitement de données |
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 |
NL7413162A (nl) * | 1974-10-07 | 1976-04-09 | Philips Nv | Inrichting voor het uitlezen van een schijf- vormige registratiedrager. |
-
1977
- 1977-12-16 GB GB52536/77A patent/GB1570799A/en not_active Expired
- 1977-12-19 CA CA293,421A patent/CA1103351A/en not_active Expired
-
1978
- 1978-01-13 FR FR7800965A patent/FR2379129A1/fr not_active Withdrawn
- 1978-01-18 NL NL7800613A patent/NL7800613A/xx not_active Application Discontinuation
- 1978-01-26 JP JP781978A patent/JPS5395603A/ja active Pending
- 1978-01-27 DE DE19782803603 patent/DE2803603A1/de not_active Withdrawn
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 |
FR2379129A1 (fr) | 1978-08-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |