JPS644986A - Information memory device - Google Patents
Information memory deviceInfo
- Publication number
- JPS644986A JPS644986A JP62159834A JP15983487A JPS644986A JP S644986 A JPS644986 A JP S644986A JP 62159834 A JP62159834 A JP 62159834A JP 15983487 A JP15983487 A JP 15983487A JP S644986 A JPS644986 A JP S644986A
- Authority
- JP
- Japan
- Prior art keywords
- track
- tracking
- head
- tip part
- tracking control
- 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 Head For Track Selection And Changing (AREA)
Abstract
PURPOSE:To rapidly perform tracking to a track in the neighborhood of a targeted track, by detecting tracking deviation, controlling the track transversal speed of the tip part of a head, and then, switching control to tracking control again. CONSTITUTION:When the tracking deviation occurs at the tip part of the head while the tracking control is performed, the tracking deviation is detected, and the tracking control is interrupted, and deceleration is applied controlling the track transversal speed of the tip part of the head. Afterwards, the tracking control is restarted after the fact that the speed is decelerated to a level possible to perform track pull-in is detected by a tracking control means 30. Therefore, the runaway of the head can be prevented from occurring in a case where the tracking deviation occurs, etc., and the tip part of the head can be pulled in to the center of the track in the neighborhood of the targeted track immediately without using an external scale. In such a way, it is possible to obtain an information memory device being operated at high speed and with high reliability.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62159834A JPH0821209B2 (en) | 1987-06-29 | 1987-06-29 | Optical disk drive |
KR1019870013369A KR910003458B1 (en) | 1986-12-02 | 1987-11-26 | Operating apparatus of optical disk |
DE90121773T DE3788883T2 (en) | 1986-12-02 | 1987-12-02 | Optical disk operating device and information storage device. |
EP87310615A EP0270357B1 (en) | 1986-12-02 | 1987-12-02 | Optical disk drive device and information storage device |
EP90121773A EP0424980B1 (en) | 1986-12-02 | 1987-12-02 | Optical disk drive device and information storage device |
DE8787310615T DE3778841D1 (en) | 1986-12-02 | 1987-12-02 | DRIVING DEVICE FOR OPTICAL PLATES AND DEVICE FOR STORING INFORMATION. |
EP90121579A EP0424978B1 (en) | 1986-12-02 | 1987-12-02 | Optical disk drive device and information storage device |
DE3789457T DE3789457T2 (en) | 1986-12-02 | 1987-12-02 | Optical disk drive device and optical information recording device. |
CA000553362A CA1305792C (en) | 1986-12-02 | 1987-12-02 | Optical disk drive device and information storage device |
KR1019910004834A KR910003455B1 (en) | 1987-06-29 | 1991-03-27 | Information-storage apparatus |
US08/159,477 US5398221A (en) | 1986-12-02 | 1993-11-30 | Information storage device capable of oepration in a velocity control mode and a tracking control mode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62159834A JPH0821209B2 (en) | 1987-06-29 | 1987-06-29 | Optical disk drive |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS644986A true JPS644986A (en) | 1989-01-10 |
JPH0821209B2 JPH0821209B2 (en) | 1996-03-04 |
Family
ID=15702263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62159834A Expired - Lifetime JPH0821209B2 (en) | 1986-12-02 | 1987-06-29 | Optical disk drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0821209B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5311490A (en) * | 1990-12-19 | 1994-05-10 | Sharp Kabushiki Kaisha | Access controlling device for use in an optical disk drive |
US8027228B2 (en) | 2004-10-15 | 2011-09-27 | Teac Corporation | Optical disk device and seek method in optical disk device |
US9412406B2 (en) | 2013-03-07 | 2016-08-09 | Mitsubishi Electric Corporation | Tracking control device, tracking control method, and optical disc apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6077024U (en) * | 1983-11-01 | 1985-05-29 | パイオニア株式会社 | Tracking servo retraction device |
JPS6098534A (en) * | 1983-11-02 | 1985-06-01 | Nec Corp | Tracking lead-in device |
JPS60219680A (en) * | 1984-04-13 | 1985-11-02 | Fujitsu Ltd | Magnetic disc device |
-
1987
- 1987-06-29 JP JP62159834A patent/JPH0821209B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6077024U (en) * | 1983-11-01 | 1985-05-29 | パイオニア株式会社 | Tracking servo retraction device |
JPS6098534A (en) * | 1983-11-02 | 1985-06-01 | Nec Corp | Tracking lead-in device |
JPS60219680A (en) * | 1984-04-13 | 1985-11-02 | Fujitsu Ltd | Magnetic disc device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5311490A (en) * | 1990-12-19 | 1994-05-10 | Sharp Kabushiki Kaisha | Access controlling device for use in an optical disk drive |
US8027228B2 (en) | 2004-10-15 | 2011-09-27 | Teac Corporation | Optical disk device and seek method in optical disk device |
US9412406B2 (en) | 2013-03-07 | 2016-08-09 | Mitsubishi Electric Corporation | Tracking control device, tracking control method, and optical disc apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0821209B2 (en) | 1996-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080304 Year of fee payment: 12 |