JPS5774835A - Optical recording system - Google Patents
Optical recording systemInfo
- Publication number
- JPS5774835A JPS5774835A JP14896180A JP14896180A JPS5774835A JP S5774835 A JPS5774835 A JP S5774835A JP 14896180 A JP14896180 A JP 14896180A JP 14896180 A JP14896180 A JP 14896180A JP S5774835 A JPS5774835 A JP S5774835A
- Authority
- JP
- Japan
- Prior art keywords
- metallic layer
- recording
- control
- servo
- instance
- 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.)
- Pending
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
- G11B7/08—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
- G11B7/0901—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 for track following only
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To exactly execute a track servo-control of a recording substrate, and also to erase the recording, by forming a thermoplastic substance layer and a metallic layer as a substrate, providing a groove part for separating the metallic layer, and constituting so that information is recorded on the surface of the metallic layer. CONSTITUTION:A photoresist 4 is applied on an optical disk 1 which has vapor-deposited, for instance, Al3 to thickness of 300Angstrom on a thermoplastic resin part 2 such as acrylic resin and polyvinyl chloride, and is exposed through a mask, and after that, numbers of concentric groove parts 7 are formed by means of development and etching. To the part of the metallic layer 3, a laser beam 26 for writing-in and weak servo-beams 27-0, 27-1 are projected. For instance, in case the laser beam 26 is deflected to the left, the beam 27-0 and the beam 27-1 exist on the groove part 27 and the metallic layer 3, respectively. Its reflected rays are detected by detectors 19, 20, pass through LPFs21, 22 and a differential amplifier 23, and a servo-control is executed through a phase compensating circuit 24 and a mirror rotation control part 25 by its error signal. In this way, a track servo-control of a recording substrate becomes exact, and also the recording is erased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14896180A JPS5774835A (en) | 1980-10-24 | 1980-10-24 | Optical recording system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14896180A JPS5774835A (en) | 1980-10-24 | 1980-10-24 | Optical recording system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5774835A true JPS5774835A (en) | 1982-05-11 |
Family
ID=15464525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14896180A Pending JPS5774835A (en) | 1980-10-24 | 1980-10-24 | Optical recording system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5774835A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6122450A (en) * | 1984-07-10 | 1986-01-31 | Matsushita Electric Ind Co Ltd | Information recording medium and its recording and reproducing method |
JPS61172228A (en) * | 1984-05-21 | 1986-08-02 | Matsushita Electric Ind Co Ltd | Tracking controller |
JPS62219247A (en) * | 1986-03-20 | 1987-09-26 | Canon Inc | Optical recording medium and optical recording method thereof |
US5272684A (en) * | 1989-08-01 | 1993-12-21 | Mitsubishi Denki Kabushiki Kaisha | Information recording method and information recording apparatus for magneto-optic recording information medium |
JPH08190738A (en) * | 1995-09-22 | 1996-07-23 | Matsushita Electric Ind Co Ltd | Recording method and recording and reproducing method on master disk of information recording medium |
KR19990057754A (en) * | 1997-12-30 | 1999-07-15 | 윤종용 | How to make a hard disk with servo information |
-
1980
- 1980-10-24 JP JP14896180A patent/JPS5774835A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61172228A (en) * | 1984-05-21 | 1986-08-02 | Matsushita Electric Ind Co Ltd | Tracking controller |
JPS6122450A (en) * | 1984-07-10 | 1986-01-31 | Matsushita Electric Ind Co Ltd | Information recording medium and its recording and reproducing method |
JPS62219247A (en) * | 1986-03-20 | 1987-09-26 | Canon Inc | Optical recording medium and optical recording method thereof |
JPH0535489B2 (en) * | 1986-03-20 | 1993-05-26 | Canon Kk | |
US5272684A (en) * | 1989-08-01 | 1993-12-21 | Mitsubishi Denki Kabushiki Kaisha | Information recording method and information recording apparatus for magneto-optic recording information medium |
JPH08190738A (en) * | 1995-09-22 | 1996-07-23 | Matsushita Electric Ind Co Ltd | Recording method and recording and reproducing method on master disk of information recording medium |
KR19990057754A (en) * | 1997-12-30 | 1999-07-15 | 윤종용 | How to make a hard disk with servo information |
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