JPS6435731A - Automatic tracking controller - Google Patents
Automatic tracking controllerInfo
- Publication number
- JPS6435731A JPS6435731A JP19044887A JP19044887A JPS6435731A JP S6435731 A JPS6435731 A JP S6435731A JP 19044887 A JP19044887 A JP 19044887A JP 19044887 A JP19044887 A JP 19044887A JP S6435731 A JPS6435731 A JP S6435731A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- optical head
- central position
- previously stored
- prescribed value
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To surely feed a head with a good following characteristic by driving an optical head when a difference between the previously stored central position of an objective lens and a moving position at the time of tracking exceeds a prescribed value. CONSTITUTION:The central position of the objective lens 7 held in the optical head is previously stored in a storing circuit 18 and when the difference between this storing central position and the moving position of the objective lens 7 at the time of the automatic tracking exceeds the prescribed value, the optical head is driven by driving systems 20, 15, 16. In such a way, the central position of the objective lens 7 is previously stored and when the current position of the objective lens 7 is dislocated from this center position by exceeding the prescribed value at the time of the tracking, the optical head holding the objective lens 7 is moved, thereby, the head can be correctly fed with the good following characteristic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19044887A JPH0738256B2 (en) | 1987-07-31 | 1987-07-31 | Auto tracking control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19044887A JPH0738256B2 (en) | 1987-07-31 | 1987-07-31 | Auto tracking control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6435731A true JPS6435731A (en) | 1989-02-06 |
JPH0738256B2 JPH0738256B2 (en) | 1995-04-26 |
Family
ID=16258297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19044887A Expired - Fee Related JPH0738256B2 (en) | 1987-07-31 | 1987-07-31 | Auto tracking control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0738256B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5200937A (en) * | 1988-09-29 | 1993-04-06 | Canon Kabushiki Kaisha | Apparatus for and method of recording and/or reproducing information by means of two actuators |
WO2002039436A1 (en) * | 2000-11-08 | 2002-05-16 | Sony Computer Entertainment Inc. | Optical disk unit and control method therefor |
WO2002039437A1 (en) * | 2000-11-08 | 2002-05-16 | Sony Computer Entertainment Inc. | Optica disk unit and control method therefor |
-
1987
- 1987-07-31 JP JP19044887A patent/JPH0738256B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5200937A (en) * | 1988-09-29 | 1993-04-06 | Canon Kabushiki Kaisha | Apparatus for and method of recording and/or reproducing information by means of two actuators |
WO2002039436A1 (en) * | 2000-11-08 | 2002-05-16 | Sony Computer Entertainment Inc. | Optical disk unit and control method therefor |
WO2002039437A1 (en) * | 2000-11-08 | 2002-05-16 | Sony Computer Entertainment Inc. | Optica disk unit and control method therefor |
US6826134B2 (en) | 2000-11-08 | 2004-11-30 | Sony Computer Entertainment Inc. | Optical disk device with tracking adjustment and sled adjustment of optical pickup and method for controlling the device |
KR100800701B1 (en) * | 2000-11-08 | 2008-02-01 | 가부시키가이샤 소니 컴퓨터 엔터테인먼트 | Optical disk unit and control method therefor |
Also Published As
Publication number | Publication date |
---|---|
JPH0738256B2 (en) | 1995-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |