JPS6435732A - Disk device - Google Patents

Disk device

Info

Publication number
JPS6435732A
JPS6435732A JP19158887A JP19158887A JPS6435732A JP S6435732 A JPS6435732 A JP S6435732A JP 19158887 A JP19158887 A JP 19158887A JP 19158887 A JP19158887 A JP 19158887A JP S6435732 A JPS6435732 A JP S6435732A
Authority
JP
Japan
Prior art keywords
time
control
access
optical head
moving
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
Application number
JP19158887A
Other languages
Japanese (ja)
Inventor
Toshiyuki Miyasaka
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.)
Toshiba Corp
Toshiba Intelligent Technology Co Ltd
Original Assignee
Toshiba Corp
Toshiba Intelligent Technology Co Ltd
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 Toshiba Corp, Toshiba Intelligent Technology Co Ltd filed Critical Toshiba Corp
Priority to JP19158887A priority Critical patent/JPS6435732A/en
Publication of JPS6435732A publication Critical patent/JPS6435732A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To shorten an access time by starting a tracking by a converging means when the relative speed of the oscillation of the converging means goes to zero after a rough access. CONSTITUTION:An optical head 3 is moved in a direction of the radius of a disk 1 by a first moving means 13, the converging means 6 is moved according to a detecting signal from a photodetector 8 by a second moving means and followed and controlled in a movement to the track of the disk 1 by a control means 16. At the time of moving the optical head 3 by the first moving means 13, the control by the control means 16 is stopped and at the time of stopping the optical head 3, the relative speed of the converging means 6 and the corresponding track is detected according to the detecting signal from the photodetector 8 and at the time of detecting the relative speed of zero, the control by the control means 16 is started. Thereby after the rough access, the oscillation of an objective lens is contracted to start the tracking and access speed can be increased.
JP19158887A 1987-07-31 1987-07-31 Disk device Pending JPS6435732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19158887A JPS6435732A (en) 1987-07-31 1987-07-31 Disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19158887A JPS6435732A (en) 1987-07-31 1987-07-31 Disk device

Publications (1)

Publication Number Publication Date
JPS6435732A true JPS6435732A (en) 1989-02-06

Family

ID=16277140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19158887A Pending JPS6435732A (en) 1987-07-31 1987-07-31 Disk device

Country Status (1)

Country Link
JP (1) JPS6435732A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0388128A (en) * 1989-08-31 1991-04-12 Matsushita Electric Ind Co Ltd Tracking servo pull-in device
JPH04276366A (en) * 1991-01-25 1992-10-01 Samsung Electron Co Ltd Pickup driving device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0388128A (en) * 1989-08-31 1991-04-12 Matsushita Electric Ind Co Ltd Tracking servo pull-in device
JPH04276366A (en) * 1991-01-25 1992-10-01 Samsung Electron Co Ltd Pickup driving device

Similar Documents

Publication Publication Date Title
CA2012800A1 (en) Reliably detecting track crossings and controls associated therewith for track seeking in optic disk recorders
JPS5538662A (en) Tracking servo-drawing-in unit of optical information reader
MY103883A (en) Optical head devices for use in disc players
KR940024711A (en) Focusing servo system and focus acquisition method
EP0357353A3 (en) Track search apparatus
CA2073323A1 (en) Optical recording medium driving apparatus capable of accurately detecting position of optical head
EP0304299A3 (en) An optical disc drive
JPS6435732A (en) Disk device
JPS55125417A (en) Photodetector
JPS55125542A (en) Optical reproduction unit
JPS5764337A (en) Track retrieval device
EP0404449A3 (en) Data-track search apparatus
EP0317338A3 (en) System and method for accessing tracks for optical disc apparatus
JPS643824A (en) Optical disk device
JPS643826A (en) Optical disk device
JPS6435736A (en) Optical head in optical disk recording and reproducing device
JPS6488302A (en) Position detecting device
JPS6455766A (en) Magneto-optical recording, reproducing and erasing device
JPS6446235A (en) Disk device
JPS56148745A (en) Optical recorder and reproducer
JPS643821A (en) Optical recording and reproducing device
JPS6423471A (en) Track seek device
JPS6489028A (en) Optical head device
JPS56111144A (en) Program search system for tape recorder
JPS644986A (en) Information memory device