DE3574795D1 - Optisches aufzeichnungsgeraet. - Google Patents
Optisches aufzeichnungsgeraet.Info
- Publication number
- DE3574795D1 DE3574795D1 DE8585300250T DE3574795T DE3574795D1 DE 3574795 D1 DE3574795 D1 DE 3574795D1 DE 8585300250 T DE8585300250 T DE 8585300250T DE 3574795 T DE3574795 T DE 3574795T DE 3574795 D1 DE3574795 D1 DE 3574795D1
- Authority
- DE
- Germany
- Prior art keywords
- recording device
- optical recording
- optical
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1879—Direct read-after-write methods
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57815084A | 1984-02-08 | 1984-02-08 | |
US57815184A | 1984-02-08 | 1984-02-08 | |
US06/578,149 US4583208A (en) | 1984-02-08 | 1984-02-08 | Sector mark decoder for an optical recorder |
US06/578,152 US4606016A (en) | 1984-02-08 | 1984-02-08 | Write protection and data detection using differential detector |
US06/578,148 US4599717A (en) | 1984-02-08 | 1984-02-08 | Direct read after write verify using differential detection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3574795D1 true DE3574795D1 (de) | 1990-01-18 |
Family
ID=27541933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8585300250T Expired - Fee Related DE3574795D1 (de) | 1984-02-08 | 1985-01-14 | Optisches aufzeichnungsgeraet. |
Country Status (3)
Country | Link |
---|---|
EP (3) | EP0154389B1 (de) |
AU (3) | AU575901B2 (de) |
DE (1) | DE3574795D1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8702904A (nl) * | 1987-12-03 | 1989-07-03 | Philips Nv | Werkwijze en inrichting voor het optekenen van informatie op een registratiedrager, alsmede een inrichting voor het lezen van de opgetekende informatie. |
US5016258A (en) * | 1988-06-10 | 1991-05-14 | Matsushita Electric Industrial Co., Ltd. | Digital modulator and demodulator |
JPH0233221A (ja) * | 1988-07-22 | 1990-02-02 | Matsushita Electric Ind Co Ltd | コード変換装置と復号装置 |
US5134496A (en) * | 1989-05-26 | 1992-07-28 | Technicolor Videocassette Of Michigan Inc. | Bilateral anti-copying device for video systems |
JPH06325369A (ja) * | 1993-03-08 | 1994-11-25 | Philips Electron Nv | 光学記録兼読取装置 |
CN114124252B (zh) * | 2022-01-21 | 2022-04-19 | 苏州浪潮智能科技有限公司 | 高速差分信号校正*** |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3657707A (en) * | 1969-03-17 | 1972-04-18 | Precision Instr Co | Laser recording system with both surface defect and data error checking |
US4145758A (en) * | 1977-10-25 | 1979-03-20 | Drexler Technology Corporation | Error checking method and apparatus for digital data in optical recording systems |
NL187413C (nl) * | 1978-03-16 | 1991-09-16 | Philips Nv | Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager. |
GB2040539B (en) * | 1978-12-27 | 1983-01-26 | Hitachi Ltd | Optical information recording apparatus |
BR8004455A (pt) * | 1979-07-19 | 1981-01-27 | Exxon Research Engineering Co | Circuito separador de dados e circuito para emprego na recuperacao de um sinal de relogio de um sinal codificado de dados dos |
NL8004598A (nl) * | 1980-08-14 | 1982-03-16 | Philips Nv | Werkwijze voor het inschrijven in, respektievelijk uitlezen uit, een registratiedragerlichaam, van sektorsgewijs georganiseerde informatie, en inrichting daarvoor. |
JPS5769531A (en) * | 1980-10-16 | 1982-04-28 | Olympus Optical Co Ltd | Optical information recording method |
NL8006165A (nl) * | 1980-11-12 | 1982-06-01 | Philips Nv | Systeem voor het overdragen van digitale informatie, codeerinrichting voor toepassing in dat systeem, decodeerinrichting voor toepassing in dat systeem en registratiedrager voor toepassing in dat systeem. |
JPS5794937A (en) * | 1980-12-05 | 1982-06-12 | Olympus Optical Co Ltd | Optical information recording method |
US4562549A (en) * | 1981-10-14 | 1985-12-31 | Hitachi, Ltd. | Digital player using a pulse width detector |
US4494226A (en) * | 1981-10-15 | 1985-01-15 | Burroughs Corporation | Three beam optical memory system |
CA1212729A (en) * | 1981-12-08 | 1986-10-14 | Hiroshi Ogawa | Digital signal detecting and compensating circuit with adjustable window signal |
JPS58121148A (ja) * | 1982-01-11 | 1983-07-19 | Olympus Optical Co Ltd | 光学的情報記録再生装置 |
US4488277A (en) * | 1982-02-10 | 1984-12-11 | North American Philips Corporation | Control system for an optical data recording apparatus |
JPS58143445A (ja) * | 1982-02-19 | 1983-08-26 | Fujitsu Ltd | 光学式情報記録装置 |
-
1985
- 1985-01-14 DE DE8585300250T patent/DE3574795D1/de not_active Expired - Fee Related
- 1985-01-14 EP EP85300250A patent/EP0154389B1/de not_active Expired
- 1985-01-14 EP EP88201566A patent/EP0295759A3/en not_active Withdrawn
- 1985-01-14 EP EP88201565A patent/EP0300581A3/en not_active Withdrawn
- 1985-01-22 AU AU37964/85A patent/AU575901B2/en not_active Ceased
-
1988
- 1988-06-21 AU AU18197/88A patent/AU592707B2/en not_active Ceased
- 1988-06-21 AU AU18196/88A patent/AU592706B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
AU3796485A (en) | 1985-08-15 |
EP0300581A3 (en) | 1989-04-12 |
EP0295759A2 (de) | 1988-12-21 |
EP0295759A3 (en) | 1989-05-03 |
EP0154389B1 (de) | 1989-12-13 |
EP0300581A2 (de) | 1989-01-25 |
EP0154389A1 (de) | 1985-09-11 |
AU575901B2 (en) | 1988-08-11 |
AU1819788A (en) | 1988-09-15 |
AU1819688A (en) | 1988-09-15 |
AU592706B2 (en) | 1990-01-18 |
AU592707B2 (en) | 1990-01-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |