JPS5641537A - Optical disk control unit - Google Patents
Optical disk control unitInfo
- Publication number
- JPS5641537A JPS5641537A JP11496879A JP11496879A JPS5641537A JP S5641537 A JPS5641537 A JP S5641537A JP 11496879 A JP11496879 A JP 11496879A JP 11496879 A JP11496879 A JP 11496879A JP S5641537 A JPS5641537 A JP S5641537A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- head
- optical
- rotary speed
- information
- 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
Landscapes
- Rotational Drive Of Disk (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
PURPOSE: To record the information at a constant track pitch, irrespective of the rotary speed of the disk, by controlling the movement of the optical head on basis of the information which has detected the rotarty angle amount of the optical disk.
CONSTITUTION: The rotary speed of the optical disk 11 which is decided by the rotary speed of the motor 14, is set by the position of the head 29 in the radial direction of the disk 11, that is to say, the position signal from the optical scale 40 provided to the main control circuit 21 from the tracking control circuit 42, in order that the scanning line speed by the optical head 29 can be made constant. Therefore, when the disk 11 rotates and the head 29 moves in the inside circumfe rential direction of the disk 11, the rotary speed of the disk 11 is controlled according to the position of the head 29, and in consequence, not only the scanning line speed of the head 29 extending over the whole disk 11 but also the pitch of a spiral track drawn on the disk 11 are made constant. Thus, the information can be recroded at a constant track pitch at all times.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11496879A JPS5641537A (en) | 1979-09-07 | 1979-09-07 | Optical disk control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11496879A JPS5641537A (en) | 1979-09-07 | 1979-09-07 | Optical disk control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5641537A true JPS5641537A (en) | 1981-04-18 |
Family
ID=14651081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11496879A Pending JPS5641537A (en) | 1979-09-07 | 1979-09-07 | Optical disk control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5641537A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4730298A (en) * | 1983-09-27 | 1988-03-08 | Kabushiki Kaisha Toshiba | Moving device for an optical recording system in a high density spiral track-forming apparatus |
-
1979
- 1979-09-07 JP JP11496879A patent/JPS5641537A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4730298A (en) * | 1983-09-27 | 1988-03-08 | Kabushiki Kaisha Toshiba | Moving device for an optical recording system in a high density spiral track-forming apparatus |
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