JPH0578092B2 - - Google Patents

Info

Publication number
JPH0578092B2
JPH0578092B2 JP61297687A JP29768786A JPH0578092B2 JP H0578092 B2 JPH0578092 B2 JP H0578092B2 JP 61297687 A JP61297687 A JP 61297687A JP 29768786 A JP29768786 A JP 29768786A JP H0578092 B2 JPH0578092 B2 JP H0578092B2
Authority
JP
Japan
Prior art keywords
light
comparator
signal
focus
servo
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.)
Expired - Lifetime
Application number
JP61297687A
Other languages
English (en)
Japanese (ja)
Other versions
JPS63152028A (ja
Inventor
Hideki Hosoya
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 JP29768786A priority Critical patent/JPS63152028A/ja
Publication of JPS63152028A publication Critical patent/JPS63152028A/ja
Publication of JPH0578092B2 publication Critical patent/JPH0578092B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP29768786A 1986-12-16 1986-12-16 光学的情報記録再生装置 Granted JPS63152028A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29768786A JPS63152028A (ja) 1986-12-16 1986-12-16 光学的情報記録再生装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29768786A JPS63152028A (ja) 1986-12-16 1986-12-16 光学的情報記録再生装置

Publications (2)

Publication Number Publication Date
JPS63152028A JPS63152028A (ja) 1988-06-24
JPH0578092B2 true JPH0578092B2 (enExample) 1993-10-28

Family

ID=17849848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29768786A Granted JPS63152028A (ja) 1986-12-16 1986-12-16 光学的情報記録再生装置

Country Status (1)

Country Link
JP (1) JPS63152028A (enExample)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694528A (en) * 1979-12-28 1981-07-31 Matsushita Electric Ind Co Ltd Drawing-in method of focus servo

Also Published As

Publication number Publication date
JPS63152028A (ja) 1988-06-24

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