JPS6439639A - Optical disk recording and reproducing device - Google Patents
Optical disk recording and reproducing deviceInfo
- Publication number
- JPS6439639A JPS6439639A JP19471887A JP19471887A JPS6439639A JP S6439639 A JPS6439639 A JP S6439639A JP 19471887 A JP19471887 A JP 19471887A JP 19471887 A JP19471887 A JP 19471887A JP S6439639 A JPS6439639 A JP S6439639A
- Authority
- JP
- Japan
- Prior art keywords
- output
- linear motor
- optical
- counter
- position signal
- 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
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To obtain the high gain of a linear motor servo by adding the output of a counter controlled by the output of a window comparator with the radial direction position signal of an optical beam as an input to a linear motor target position. CONSTITUTION:The reflected light of an optical beam 2 from an optical disk 1 is made incident on an optical head 4 and the position signal in a radial direction of the beam 2 is detected. The position signal is inputted to a tracking servo circuit 7, executes a track servo, is inputted to a window comparator 8 and the dislocation of an optical axis is detected. A counter in which an up-and-down are controlled by the output of the comparator 8 executes a counting by the clock of the output of a clock generator 10 and the output of the counter 9 is added to the output of a target value generator 11. A linear motor 5 moves the optical head 4 with the output of a D/A converter 13 as the target value and the correction of the optical axis is executed. Thus, the interference of a tracking servo system and a linear motor system is eliminated and a stable control can be executed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19471887A JPS6439639A (en) | 1987-08-04 | 1987-08-04 | Optical disk recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19471887A JPS6439639A (en) | 1987-08-04 | 1987-08-04 | Optical disk recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439639A true JPS6439639A (en) | 1989-02-09 |
Family
ID=16329091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19471887A Pending JPS6439639A (en) | 1987-08-04 | 1987-08-04 | Optical disk recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439639A (en) |
-
1987
- 1987-08-04 JP JP19471887A patent/JPS6439639A/en active Pending
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