JPS5584053A - Tracking control unit for optical reproducer - Google Patents
Tracking control unit for optical reproducerInfo
- Publication number
- JPS5584053A JPS5584053A JP15661078A JP15661078A JPS5584053A JP S5584053 A JPS5584053 A JP S5584053A JP 15661078 A JP15661078 A JP 15661078A JP 15661078 A JP15661078 A JP 15661078A JP S5584053 A JPS5584053 A JP S5584053A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- light beam
- tracking control
- lens
- control unit
- 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
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To secure the high-accuracy tracking control by detecting the reflected light from the recording medium through the optical detector containing the divided regions and then controlling the light beam driving unit with the differential output.
CONSTITUTION: Light beam 5 given from light source 4 is focused on recording disk 1 which functions as the recording medium via lens 6, optical element 7 and condenser lens 8 each. And the reflected light given from disk 1 is separated by element 7 to be supplied to 2-division optical detector 10, and the output of each divided region of detector 10 is supplied to differential amplifier 11. This differential output drives driving element 13 attached to movable part 14 including light source 4 and lens 6. As a result, the high-accuracy control is ensured so that the light beam focused on disk 1 may always be on the track.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15661078A JPS5584053A (en) | 1978-12-18 | 1978-12-18 | Tracking control unit for optical reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15661078A JPS5584053A (en) | 1978-12-18 | 1978-12-18 | Tracking control unit for optical reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5584053A true JPS5584053A (en) | 1980-06-24 |
Family
ID=15631490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15661078A Pending JPS5584053A (en) | 1978-12-18 | 1978-12-18 | Tracking control unit for optical reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5584053A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5198002A (en) * | 1975-02-26 | 1976-08-28 |
-
1978
- 1978-12-18 JP JP15661078A patent/JPS5584053A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5198002A (en) * | 1975-02-26 | 1976-08-28 |
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