JPS6448236A - Optical pick-up device - Google Patents
Optical pick-up deviceInfo
- Publication number
- JPS6448236A JPS6448236A JP20383387A JP20383387A JPS6448236A JP S6448236 A JPS6448236 A JP S6448236A JP 20383387 A JP20383387 A JP 20383387A JP 20383387 A JP20383387 A JP 20383387A JP S6448236 A JPS6448236 A JP S6448236A
- Authority
- JP
- Japan
- Prior art keywords
- access
- track signal
- time
- signal
- correcting
- 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 execute exact tracking control by extracting off-set quantity to correspond to the access position of a moving optical system from a memory at the time of an access, correcting and removing this off-set quantity from a track signal detected in the access position. CONSTITUTION:In the access time, the access position of a moving optical system 2 is detected by a position sensor 20 at all time and an off-set correcting signal in the access position is extracted from a memory 21 based on the position information and outputted. These track signal before correction and off-set correcting signal are inputted to a differential amplifier 22, for example, as an arithmetic processing means and by subtracting an off-set part from a raw track signal, the track signal in which the off-set part is removed can be obtained. Thus, an off-set component, which is generated by the camber or inclining, etc., of a carriage 19 occurred at the time of working, assembling or adjusting, etc., is removed from the track signal and the exact tracking control can be executed without the influence of the off-set.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20383387A JPS6448236A (en) | 1987-08-17 | 1987-08-17 | Optical pick-up device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20383387A JPS6448236A (en) | 1987-08-17 | 1987-08-17 | Optical pick-up device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6448236A true JPS6448236A (en) | 1989-02-22 |
Family
ID=16480459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20383387A Pending JPS6448236A (en) | 1987-08-17 | 1987-08-17 | Optical pick-up device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6448236A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01100736A (en) * | 1987-10-14 | 1989-04-19 | Hitachi Ltd | Optical disk device |
-
1987
- 1987-08-17 JP JP20383387A patent/JPS6448236A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01100736A (en) * | 1987-10-14 | 1989-04-19 | Hitachi Ltd | Optical disk device |
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