SE7810128L - Apparat for skrivning och avlesning av ett videoskivelement jemte videoskivelement - Google Patents
Apparat for skrivning och avlesning av ett videoskivelement jemte videoskivelementInfo
- Publication number
- SE7810128L SE7810128L SE7810128A SE7810128A SE7810128L SE 7810128 L SE7810128 L SE 7810128L SE 7810128 A SE7810128 A SE 7810128A SE 7810128 A SE7810128 A SE 7810128A SE 7810128 L SE7810128 L SE 7810128L
- Authority
- SE
- Sweden
- Prior art keywords
- intensity
- light
- disk element
- video disk
- writing
- Prior art date
Links
Classifications
-
- 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
-
- 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
- G11B7/00453—Recording involving spectral or photochemical hole burning
-
- 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
- G11B7/128—Modulators
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7810128A SE418914B (sv) | 1978-09-27 | 1978-09-27 | Forfarande for behandling av frekvensmodulerad information pa ett lagringselement samt apparat for behandling av information i form av frekvensmodulerad signal pa ett informationselement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7810128A SE418914B (sv) | 1978-09-27 | 1978-09-27 | Forfarande for behandling av frekvensmodulerad information pa ett lagringselement samt apparat for behandling av information i form av frekvensmodulerad signal pa ett informationselement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7810128L true SE7810128L (sv) | 1980-03-28 |
| SE418914B SE418914B (sv) | 1981-06-29 |
Family
ID=20335935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7810128A SE418914B (sv) | 1978-09-27 | 1978-09-27 | Forfarande for behandling av frekvensmodulerad information pa ett lagringselement samt apparat for behandling av information i form av frekvensmodulerad signal pa ett informationselement |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE418914B (sv) |
-
1978
- 1978-09-27 SE SE7810128A patent/SE418914B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE418914B (sv) | 1981-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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