IT1004391B - PROCEDURE AND DEVICE FOR MANUFACTURING A GUIDE IN THE SOL CO FOR THE RECORDING OF INFORMATION OF A SPIRAL ON A DISCOID-SHAPED SIGNAL SUPPORT - Google Patents
PROCEDURE AND DEVICE FOR MANUFACTURING A GUIDE IN THE SOL CO FOR THE RECORDING OF INFORMATION OF A SPIRAL ON A DISCOID-SHAPED SIGNAL SUPPORTInfo
- Publication number
- IT1004391B IT1004391B IT4939674A IT4939674A IT1004391B IT 1004391 B IT1004391 B IT 1004391B IT 4939674 A IT4939674 A IT 4939674A IT 4939674 A IT4939674 A IT 4939674A IT 1004391 B IT1004391 B IT 1004391B
- Authority
- IT
- Italy
- Prior art keywords
- discoid
- sol
- spiral
- recording
- procedure
- 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
- G11B7/12—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
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742449136 DE2449136A1 (en) | 1973-03-27 | 1974-10-16 | Signal carrier with track run - has track for stored information and pressure and capacity scanning |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2315735A DE2315735A1 (en) | 1973-03-27 | 1973-03-27 | METHOD AND DEVICES FOR PRODUCING A TRACK GUIDANCE FOR THE RECORDING OF INFORMATION IN A SPIRAL ON A PLATE-SHAPED SIGNAL CARRIER |
| DE19742405071 DE2405071A1 (en) | 1974-02-02 | 1974-02-02 | Recording information on photosensitive discs - using laser beam to produce a track and modulated laser beam to record |
| DE19742405039 DE2405039A1 (en) | 1974-02-02 | 1974-02-02 | Recording information on photosensitive discs - using laser beam to produce a track and modulated laser beam to record |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1004391B true IT1004391B (en) | 1976-07-10 |
Family
ID=27185161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT4939674A IT1004391B (en) | 1973-03-27 | 1974-03-21 | PROCEDURE AND DEVICE FOR MANUFACTURING A GUIDE IN THE SOL CO FOR THE RECORDING OF INFORMATION OF A SPIRAL ON A DISCOID-SHAPED SIGNAL SUPPORT |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5027502A (en) |
| DD (1) | DD113649A5 (en) |
| FR (1) | FR2223778A1 (en) |
| GB (1) | GB1461605A (en) |
| IT (1) | IT1004391B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2321164A1 (en) * | 1975-08-13 | 1977-03-11 | Thomson Csf | Video signal recording system - reads out signals from constant pitch spiral disc track using beam mechanically controlled by guide track |
| JPS5569500A (en) * | 1978-11-17 | 1980-05-26 | Pilot Ink Co Ltd | Method of making writing implement clip with ornament |
| JPS5646721A (en) * | 1979-09-21 | 1981-04-28 | Seidensha Denshi Kogyo Kk | Caulking device for plastic projection |
| JPS609743Y2 (en) * | 1979-11-13 | 1985-04-05 | セイコーエプソン株式会社 | Locking structure of the glass part of a waterproof watch case |
| JPS5674381U (en) * | 1979-11-13 | 1981-06-18 | ||
| JPS5757619A (en) * | 1980-09-25 | 1982-04-06 | Matsushita Electric Ind Co Ltd | Holding device of plastic forming parts of hot air blowing type |
| JPS57146117A (en) * | 1981-03-05 | 1982-09-09 | Aisin Seiki Co Ltd | Attaching method for float stopper in liquid level detecting device |
| FR2521760A1 (en) * | 1982-02-12 | 1983-08-19 | Thomson Csf | Thermo-optical recording process for video disc - uses two lasers of different wavelengths, only one being intensity modulated |
| JPS60132616U (en) * | 1984-02-13 | 1985-09-04 | パイオニア株式会社 | recording device |
| JPH072955Y2 (en) * | 1988-08-25 | 1995-01-30 | 文化シヤッター株式会社 | Structure of the skylight |
| JPH042620U (en) * | 1990-04-23 | 1992-01-10 | ||
| US20070062917A1 (en) * | 2005-09-21 | 2007-03-22 | Quantronix Corporation | Laser cutting and sawing method and apparatus |
-
1974
- 1974-03-21 IT IT4939674A patent/IT1004391B/en active
- 1974-03-25 GB GB1311474A patent/GB1461605A/en not_active Expired
- 1974-03-25 DD DD17743474A patent/DD113649A5/xx unknown
- 1974-03-26 FR FR7410383A patent/FR2223778A1/fr not_active Withdrawn
- 1974-03-27 JP JP3435474A patent/JPS5027502A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1461605A (en) | 1977-01-13 |
| FR2223778A1 (en) | 1974-10-25 |
| JPS5027502A (en) | 1975-03-20 |
| DD113649A5 (en) | 1975-06-12 |
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