SE438929B - Forfarande for lagring av information av separata, sma variationer i reflektans eller transmission av ljus fran en materialplatta och apparat for utovning av forfarandet - Google Patents
Forfarande for lagring av information av separata, sma variationer i reflektans eller transmission av ljus fran en materialplatta och apparat for utovning av forfarandetInfo
- Publication number
- SE438929B SE438929B SE7803292A SE7803292A SE438929B SE 438929 B SE438929 B SE 438929B SE 7803292 A SE7803292 A SE 7803292A SE 7803292 A SE7803292 A SE 7803292A SE 438929 B SE438929 B SE 438929B
- Authority
- SE
- Sweden
- Prior art keywords
- film
- light beam
- information
- modulated
- stored
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- 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
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/24—Arrangements for providing constant relative speed between record carrier and head
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/04—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electric resistance; Record carriers therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/21—Intermediate information storage
- H04N1/2166—Intermediate information storage for mass storage, e.g. in document filing systems
- H04N1/217—Interfaces allowing access to a single user
- H04N1/2175—Interfaces allowing access to a single user with local image input
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78105677A | 1977-03-24 | 1977-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7803292L SE7803292L (sv) | 1978-09-25 |
SE438929B true SE438929B (sv) | 1985-05-13 |
Family
ID=25121529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7803292A SE438929B (sv) | 1977-03-24 | 1978-03-22 | Forfarande for lagring av information av separata, sma variationer i reflektans eller transmission av ljus fran en materialplatta och apparat for utovning av forfarandet |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS53119005A (ja) |
AU (1) | AU520835B2 (ja) |
BR (1) | BR7801789A (ja) |
CA (1) | CA1115838A (ja) |
DE (1) | DE2812886A1 (ja) |
FR (1) | FR2385170B1 (ja) |
GB (1) | GB1602893A (ja) |
NL (1) | NL7803200A (ja) |
SE (1) | SE438929B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4205339A (en) * | 1978-07-20 | 1980-05-27 | Eastman Kodak Company | Frame storage and retrieval wherein the frame fields are quadrature amplitude modulated on a single carrier |
BE871326A (fr) * | 1978-10-23 | 1979-04-17 | Mca Disco Vision | Procede et dispositif d'enregistrement et de reproduction d'un signal video. |
USRE32431E (en) * | 1978-11-16 | 1987-06-02 | Discovision Associates | System for rotating an information storage disc at a variable angular velocity to recover information therefrom at a prescribed constant rate |
US4229808A (en) * | 1978-12-21 | 1980-10-21 | Ncr Corporation | Method for recording multiple data segments on a storage disc with eccentricity factor |
US4264986A (en) * | 1979-03-12 | 1981-04-28 | Willis Craig I | Information-recording process & apparatus |
US4290122A (en) * | 1979-05-14 | 1981-09-15 | Xerox Corporation | Self-synchronizing clock source for optical memories |
JPS5621893A (en) * | 1979-07-27 | 1981-02-28 | Xerox Corp | Optical recording part |
US4268840A (en) * | 1979-07-27 | 1981-05-19 | Xerox Corporation | Optical recording member |
JPS57208639A (en) * | 1981-06-18 | 1982-12-21 | Toshiba Corp | Recording method of disk |
JPS58194149A (ja) * | 1982-05-08 | 1983-11-12 | Asahi Optical Co Ltd | 光学的記録担体からの情報読取り装置 |
CA1198209A (en) * | 1983-11-24 | 1985-12-17 | Northern Telecom Limited | Optical disc |
JPS60236119A (ja) * | 1984-05-09 | 1985-11-22 | Toshiba Corp | 光学式情報記録再生装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE702967C (de) * | 1938-03-15 | 1941-02-20 | Ernst Bergmann | Verfahren zur Aufnahme und Wiedergabe von Lichttonaufzeichnungen |
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 |
FR1471797A (fr) * | 1965-03-20 | 1967-03-03 | Bosch Gmbh Robert | Procédé et dispositif d'enregistrement d'informations |
US3665483A (en) * | 1969-06-06 | 1972-05-23 | Chase Manhattan Capital Corp | Laser recording medium |
US3774172A (en) * | 1972-03-23 | 1973-11-20 | D Silverman | Random access multiple disc optical information storage system |
FR2212070A6 (ja) * | 1972-08-25 | 1974-07-19 | Thomson Csf | |
NL7212015A (ja) * | 1972-09-04 | 1974-03-06 | ||
NL174591C (nl) * | 1973-02-09 | 1984-07-02 | Philips Nv | Schijfvormig registratiedragerlichaam. |
CA1013854A (en) * | 1973-02-20 | 1977-07-12 | John S. Winslow | Videodisc mastering system |
NL165316C (nl) * | 1973-10-01 | 1981-03-16 | Mca Disco Vision | Werkwijze voor de vervaardiging van een schrijfvormige video-afdrukmatrijs uitgaande van een moederschijf. |
JPS50136051A (ja) * | 1974-04-15 | 1975-10-28 | ||
JPS5444524B2 (ja) * | 1974-09-13 | 1979-12-26 | ||
JPS5842527B2 (ja) * | 1975-02-08 | 1983-09-20 | ティアック株式会社 | デイスクジヨウキロクバイタイヘノ ジヨウホウシンゴウノキロクホウホウ |
DE2522405C2 (de) * | 1975-05-21 | 1982-04-15 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information |
FR2366636A1 (fr) * | 1976-10-01 | 1978-04-28 | Thomson Brandt | Dispositif d'enregistrement optique d'information sur un support avec asservissement de la position de la tache d'enregistrement sur le support d'information |
-
1978
- 1978-03-17 AU AU34232/78A patent/AU520835B2/en not_active Expired
- 1978-03-22 SE SE7803292A patent/SE438929B/sv not_active IP Right Cessation
- 1978-03-22 BR BR7801789A patent/BR7801789A/pt unknown
- 1978-03-23 NL NL7803200A patent/NL7803200A/xx not_active Application Discontinuation
- 1978-03-23 CA CA299,591A patent/CA1115838A/en not_active Expired
- 1978-03-23 GB GB11767/78A patent/GB1602893A/en not_active Expired
- 1978-03-23 DE DE19782812886 patent/DE2812886A1/de not_active Ceased
- 1978-03-23 FR FR7808506A patent/FR2385170B1/fr not_active Expired
- 1978-03-24 JP JP3321278A patent/JPS53119005A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
BR7801789A (pt) | 1979-01-02 |
CA1115838A (en) | 1982-01-05 |
FR2385170A1 (fr) | 1978-10-20 |
FR2385170B1 (fr) | 1985-08-09 |
JPS6244333B2 (ja) | 1987-09-19 |
AU520835B2 (en) | 1982-03-04 |
DE2812886A1 (de) | 1978-10-26 |
AU3423278A (en) | 1979-09-20 |
NL7803200A (nl) | 1978-09-26 |
SE7803292L (sv) | 1978-09-25 |
JPS53119005A (en) | 1978-10-18 |
GB1602893A (en) | 1981-11-18 |
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Legal Events
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---|---|---|---|
NUG | Patent has lapsed |
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