JPS5698754A - Setting device for stop position of pickup arm - Google Patents
Setting device for stop position of pickup armInfo
- Publication number
- JPS5698754A JPS5698754A JP110980A JP110980A JPS5698754A JP S5698754 A JPS5698754 A JP S5698754A JP 110980 A JP110980 A JP 110980A JP 110980 A JP110980 A JP 110980A JP S5698754 A JPS5698754 A JP S5698754A
- Authority
- JP
- Japan
- Prior art keywords
- stop position
- stop
- output
- pickup arm
- prescribed
- 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
Abstract
PURPOSE: To stop a pickup arm at a prescribed position with high precision by controlling the moving speed of the pickup arm near the stop position corresponding to the output of a comparing means and that of a speed detecting means.
CONSTITUTION: The moving speed of tone arm 1 is constant in an area sufficiently away from a prescribed position, and decreases in prescribed mode in an area near a stop position as its moving position approaches to the stop position; and the current flowing through coil 10 is so controlled that it will stop in the area including the stop position. This control is exercised by control circuit 26 having time-current characteristics whose gradient becomes gentle as the tone arm approaches to the stop position. The gradient of time-coil current characteristics is determined by the output of D/A converter 25, and the coil current is determined according to the output of speed detecting circuit 28 for the tone arm.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP110980A JPS5698754A (en) | 1980-01-09 | 1980-01-09 | Setting device for stop position of pickup arm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP110980A JPS5698754A (en) | 1980-01-09 | 1980-01-09 | Setting device for stop position of pickup arm |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5698754A true JPS5698754A (en) | 1981-08-08 |
Family
ID=11492295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP110980A Pending JPS5698754A (en) | 1980-01-09 | 1980-01-09 | Setting device for stop position of pickup arm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5698754A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS601682A (en) * | 1983-06-20 | 1985-01-07 | Toshiba Corp | Head speed control system |
EP0131469A2 (en) * | 1983-07-12 | 1985-01-16 | Memorex Corporation | Disk drive positioning system providing passive head crash protection |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS517798A (en) * | 1974-03-12 | 1976-01-22 | Teruaki Fujii | Birukasaiji no hinansochi |
-
1980
- 1980-01-09 JP JP110980A patent/JPS5698754A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS517798A (en) * | 1974-03-12 | 1976-01-22 | Teruaki Fujii | Birukasaiji no hinansochi |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS601682A (en) * | 1983-06-20 | 1985-01-07 | Toshiba Corp | Head speed control system |
EP0131469A2 (en) * | 1983-07-12 | 1985-01-16 | Memorex Corporation | Disk drive positioning system providing passive head crash protection |
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