JPS5047641A - - Google Patents
Info
- Publication number
- JPS5047641A JPS5047641A JP1590174A JP1590174A JPS5047641A JP S5047641 A JPS5047641 A JP S5047641A JP 1590174 A JP1590174 A JP 1590174A JP 1590174 A JP1590174 A JP 1590174A JP S5047641 A JPS5047641 A JP S5047641A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
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- 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
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
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- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
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- 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
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/89—Television signal recording using holographic recording
- H04N5/90—Television signal recording using holographic recording on discs or drums
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Holo Graphy (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7304703A FR2217760B1 (fr) | 1973-02-09 | 1973-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5047641A true JPS5047641A (fr) | 1975-04-28 |
Family
ID=9114621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1590174A Pending JPS5047641A (fr) | 1973-02-09 | 1974-02-09 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5047641A (fr) |
DE (1) | DE2406175A1 (fr) |
FR (1) | FR2217760B1 (fr) |
IT (1) | IT1007250B (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534166A (en) * | 1967-08-04 | 1970-10-13 | Zenith Radio Corp | Television picture recording and replay system |
FR2075843A1 (fr) * | 1969-12-19 | 1971-10-15 | Thomson Csf | |
DE2056025C3 (de) * | 1970-11-13 | 1975-10-16 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Verfahren zur holografischen Speicherung von Informationen |
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1973
- 1973-02-09 FR FR7304703A patent/FR2217760B1/fr not_active Expired
-
1974
- 1974-02-06 IT IT2021474A patent/IT1007250B/it active
- 1974-02-08 DE DE19742406175 patent/DE2406175A1/de active Pending
- 1974-02-09 JP JP1590174A patent/JPS5047641A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2217760B1 (fr) | 1976-11-05 |
IT1007250B (it) | 1976-10-30 |
DE2406175A1 (de) | 1974-08-15 |
FR2217760A1 (fr) | 1974-09-06 |