JPS6435731A - Automatic tracking controller - Google Patents

Automatic tracking controller

Info

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
Application number
JP19044887A
Other languages
Japanese (ja)
Other versions
JPH0738256B2 (en
Inventor
Shigeto Kanda
Hiroto Kitai
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP19044887A priority Critical patent/JPH0738256B2/en
Publication of JPS6435731A publication Critical patent/JPS6435731A/en
Publication of JPH0738256B2 publication Critical patent/JPH0738256B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
JP19044887A 1987-07-31 1987-07-31 Auto tracking control device Expired - Fee Related JPH0738256B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
AU548174B2 (en) Substituted imidazolinyl nicotinic acids, esters and salts
EP0223483A3 (en) Windshield insertion system for a vehicle on a moving conveyor apparatus
CA2048237A1 (en) Apparatus for supplying current to laser diode with automatic power control
JPS6431624A (en) Method and welder for mutually welding plastic part
JPS6435731A (en) Automatic tracking controller
EP0359299A3 (en) An automatic supply and loading device for sheet items
CA2087381A1 (en) Magazine rack and positional adjustment system therefor
CA2144966A1 (en) Tracking External Power Supply
ES8407448A1 (en) A detector-tilter device for arranging in a same attitude tapered bodies supplied aligned with casual attitude.
GR3003932T3 (en)
EP0356520A4 (en) Automatic wire connecting method.
AU3181084A (en) 2,6-bis-fluoromethyl-dihydropyridine-3, 5-dicarboxylic
ATE38174T1 (en) WORKPIECE HANDLING DEVICE WITH AUTOMATIC GRIPPER CHANGE.
EP0148425A3 (en) Method and apparatus for controlling robot
EP0761587A3 (en) Bobbin removal device
Rajagopalan Guidance control for automatic guided vehicles employing binary camera vision
JPS6479711A (en) Automatic focusing adjuster
JPS5750360A (en) Disk device
EP0233727A3 (en) Control rod drive shaft guide
JPS644986A (en) Information memory device
GR3004052T3 (en)
AU2428588A (en) Automatic vehicle guidance systems
AU2427788A (en) Automatic vehicle guidance systems
JPS5750349A (en) Cam position controller of automatic working tape recorder
GB9006037D0 (en) Tool exchange system for hybrid die bonder

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees