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JPS6437782A - Method for pulling-in tracking servo of information recording and reproducing device - Google Patents

Method for pulling-in tracking servo of information recording and reproducing device

Info

Publication number
JPS6437782A
JPS6437782A JP19273187A JP19273187A JPS6437782A JP S6437782 A JPS6437782 A JP S6437782A JP 19273187 A JP19273187 A JP 19273187A JP 19273187 A JP19273187 A JP 19273187A JP S6437782 A JPS6437782 A JP S6437782A
Authority
JP
Japan
Prior art keywords
pulling
current
servo
center
actuator
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
JP19273187A
Other languages
Japanese (ja)
Other versions
JP2536875B2 (en
Inventor
Eiji Yamaguchi
Shigeto Kanda
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 JP62192731A priority Critical patent/JP2536875B2/en
Publication of JPS6437782A publication Critical patent/JPS6437782A/en
Application granted granted Critical
Publication of JP2536875B2 publication Critical patent/JP2536875B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE:To position a record reproducing moving part near the center of a moving range even at the time of pulling in a servo by controlling an actuator driving circuit so that a current to flow to an actuator can be a prescribed value and after that, starting the tracking servo pulling-in. CONSTITUTION:The current is flown from a driving circuit 31 to a tracking actuator 16 and this current value is detected by a coil current detector 33. On the other hand, the output voltage of a voltage generator 34 is inputted to the driving circuit 31 and a voltage is generated so that the detected current value of the current detector 33 can be zero. Accordingly, the current is not flown to the tracking actuator 16 and an objective lens is positioned at the center of the moving range in a tracking direction. The servo pulling-in is executed in a condition that the objective lens is positioned near the center of the moving range of the objective lens to an optical head main body. Thus, the record reproducing means moving part can be always positioned near the center of the moving range at the time of pulling in the servo.
JP62192731A 1987-08-03 1987-08-03 Information recording / reproducing device Expired - Fee Related JP2536875B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62192731A JP2536875B2 (en) 1987-08-03 1987-08-03 Information recording / reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62192731A JP2536875B2 (en) 1987-08-03 1987-08-03 Information recording / reproducing device

Publications (2)

Publication Number Publication Date
JPS6437782A true JPS6437782A (en) 1989-02-08
JP2536875B2 JP2536875B2 (en) 1996-09-25

Family

ID=16296128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62192731A Expired - Fee Related JP2536875B2 (en) 1987-08-03 1987-08-03 Information recording / reproducing device

Country Status (1)

Country Link
JP (1) JP2536875B2 (en)

Also Published As

Publication number Publication date
JP2536875B2 (en) 1996-09-25

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Legal Events

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