JPS644986A - Information memory device - Google Patents

Information memory device

Info

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
Application number
JP62159834A
Other languages
Japanese (ja)
Other versions
JPH0821209B2 (en
Inventor
Masaharu Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62159834A priority Critical patent/JPH0821209B2/en
Priority to KR1019870013369A priority patent/KR910003458B1/en
Priority to DE3789457T priority patent/DE3789457T2/en
Priority to EP87310615A priority patent/EP0270357B1/en
Priority to EP90121773A priority patent/EP0424980B1/en
Priority to DE8787310615T priority patent/DE3778841D1/en
Priority to EP90121579A priority patent/EP0424978B1/en
Priority to DE90121773T priority patent/DE3788883T2/en
Priority to CA000553362A priority patent/CA1305792C/en
Publication of JPS644986A publication Critical patent/JPS644986A/en
Priority to KR1019910004834A priority patent/KR910003455B1/en
Priority to US08/159,477 priority patent/US5398221A/en
Publication of JPH0821209B2 publication Critical patent/JPH0821209B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62159834A 1986-12-02 1987-06-29 Optical disk drive Expired - Lifetime JPH0821209B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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