JPS5651058A - Arm feed device for video disc player - Google Patents
Arm feed device for video disc playerInfo
- Publication number
- JPS5651058A JPS5651058A JP12402179A JP12402179A JPS5651058A JP S5651058 A JPS5651058 A JP S5651058A JP 12402179 A JP12402179 A JP 12402179A JP 12402179 A JP12402179 A JP 12402179A JP S5651058 A JPS5651058 A JP S5651058A
- Authority
- JP
- Japan
- Prior art keywords
- pickup arm
- driving
- pickup
- transistor
- stylus
- 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.)
- Granted
Links
Abstract
PURPOSE: To smoothly move the pickup arm, by driving a motor moving the pickup arm with a voltage rising with time.
CONSTITUTION: When the displacement of a pickup stylus 8 increases and the detected output of a coil drive circuit 5 driving it is more than a reference value, the output of a comparator 11 is changed into a differentiation signal through a capacitor C and a resistor R, triggering a monostable multivibrator 22 and a saw-tooth wave generating circuit 23. Thus, a transistor 14 is conducted and the conduction of a transistor 24 is controlled, thereby applying a drive voltage which gradually increases with time to a pickup arm driving motor 15. Accordingly, the pickup arm is smoothly moved to prevent rapid production of movement, allowing to avoid the distortion of playback picture via the stylus 8.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12402179A JPS5651058A (en) | 1979-09-28 | 1979-09-28 | Arm feed device for video disc player |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12402179A JPS5651058A (en) | 1979-09-28 | 1979-09-28 | Arm feed device for video disc player |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5651058A true JPS5651058A (en) | 1981-05-08 |
JPS6138540B2 JPS6138540B2 (en) | 1986-08-29 |
Family
ID=14875060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12402179A Granted JPS5651058A (en) | 1979-09-28 | 1979-09-28 | Arm feed device for video disc player |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5651058A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61293752A (en) * | 1985-06-21 | 1986-12-24 | Mitsui Seiki Kogyo Kk | Work measurement correcting device for numerically controlled machine tool |
-
1979
- 1979-09-28 JP JP12402179A patent/JPS5651058A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61293752A (en) * | 1985-06-21 | 1986-12-24 | Mitsui Seiki Kogyo Kk | Work measurement correcting device for numerically controlled machine tool |
Also Published As
Publication number | Publication date |
---|---|
JPS6138540B2 (en) | 1986-08-29 |
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