JPS6423470A - Optical head drive system - Google Patents
Optical head drive systemInfo
- Publication number
- JPS6423470A JPS6423470A JP17841187A JP17841187A JPS6423470A JP S6423470 A JPS6423470 A JP S6423470A JP 17841187 A JP17841187 A JP 17841187A JP 17841187 A JP17841187 A JP 17841187A JP S6423470 A JPS6423470 A JP S6423470A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- head
- clock
- track
- optical head
- 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)
Abstract
PURPOSE:To allow a head to trace a track with simple and small sized constitution by controlling a head drive step motor based on a clock having a frequency proportional to the number of revolutions of a recording medium. CONSTITUTION:A recording medium 1 is driven by a spindle motor 2 at the number of revolutions proportional to the clock frequency from a rotation frequency control section 3. The clock is fed to a step motor 5 driving a head 8 as a clock having a frequency fC moving the optical head 8 by one track while the medium 1 satisfying the relation of fC=(1/A).W via a frequency divider 4 whose frequency division ratio N is expressed as N=1/A. As a result, the head is able to follow the track with a simple and small sized constitution employing an open loop, where A is a constant decided by the mechanism such as the motor 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17841187A JPS6423470A (en) | 1987-07-17 | 1987-07-17 | Optical head drive system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17841187A JPS6423470A (en) | 1987-07-17 | 1987-07-17 | Optical head drive system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6423470A true JPS6423470A (en) | 1989-01-26 |
Family
ID=16048023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17841187A Pending JPS6423470A (en) | 1987-07-17 | 1987-07-17 | Optical head drive system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6423470A (en) |
-
1987
- 1987-07-17 JP JP17841187A patent/JPS6423470A/en active Pending
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