JPS6466829A - Tracking device for optical disk device - Google Patents
Tracking device for optical disk deviceInfo
- Publication number
- JPS6466829A JPS6466829A JP22194487A JP22194487A JPS6466829A JP S6466829 A JPS6466829 A JP S6466829A JP 22194487 A JP22194487 A JP 22194487A JP 22194487 A JP22194487 A JP 22194487A JP S6466829 A JPS6466829 A JP S6466829A
- Authority
- JP
- Japan
- Prior art keywords
- tracking
- servo system
- track
- error signal
- offset
- 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
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To absorb the influence of external force by a servo system during tracking jump by operating the offset and the polarity of a tracking error signal without opening a tracking servo system even during the tracking jump. CONSTITUTION:If an offset signal is added to the tracking error signal, the servo system acts so as to turn an apparent error signal into '0'. When an offset is added more and more to the tracking error signal, a light spot 1 starts to move, and at the moment that it moves to a position 1/4 track pitch distant from an aimed track 4-2, the servo system turns the offset into '0', and at the same time, returns the polarity of the tracking error signal into the former one. Then, the light spot 1 is attracted onto the track 4-2 by the action of the track servo system, and hereafter, it starts to follow this track. Thus, the stable track jump can be realized by removing the influence of the external force by the compensating ability of the tracking servo system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22194487A JPH0646458B2 (en) | 1987-09-07 | 1987-09-07 | Tracking device for optical disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22194487A JPH0646458B2 (en) | 1987-09-07 | 1987-09-07 | Tracking device for optical disk device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6466829A true JPS6466829A (en) | 1989-03-13 |
JPH0646458B2 JPH0646458B2 (en) | 1994-06-15 |
Family
ID=16774601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22194487A Expired - Lifetime JPH0646458B2 (en) | 1987-09-07 | 1987-09-07 | Tracking device for optical disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0646458B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03222120A (en) * | 1990-01-26 | 1991-10-01 | Matsushita Electric Ind Co Ltd | Truck jump controller |
US6574175B1 (en) | 1999-08-28 | 2003-06-03 | Samsung Electronics Co., Ltd. | Track jump control device for optical disc drive and method thereof |
JP2010225237A (en) * | 2009-03-24 | 2010-10-07 | Sony Optiarc Inc | Light spot position controller and light spot position control method |
-
1987
- 1987-09-07 JP JP22194487A patent/JPH0646458B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03222120A (en) * | 1990-01-26 | 1991-10-01 | Matsushita Electric Ind Co Ltd | Truck jump controller |
US6574175B1 (en) | 1999-08-28 | 2003-06-03 | Samsung Electronics Co., Ltd. | Track jump control device for optical disc drive and method thereof |
KR100618974B1 (en) * | 1999-08-28 | 2006-08-31 | 삼성전자주식회사 | Track jump control device for optical disc drive and method thereof |
JP2010225237A (en) * | 2009-03-24 | 2010-10-07 | Sony Optiarc Inc | Light spot position controller and light spot position control method |
Also Published As
Publication number | Publication date |
---|---|
JPH0646458B2 (en) | 1994-06-15 |
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