JPH0636495Y2 - フォーカスサーボ制御装置 - Google Patents

フォーカスサーボ制御装置

Info

Publication number
JPH0636495Y2
JPH0636495Y2 JP1987004458U JP445887U JPH0636495Y2 JP H0636495 Y2 JPH0636495 Y2 JP H0636495Y2 JP 1987004458 U JP1987004458 U JP 1987004458U JP 445887 U JP445887 U JP 445887U JP H0636495 Y2 JPH0636495 Y2 JP H0636495Y2
Authority
JP
Japan
Prior art keywords
focus
objective lens
signal
error 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
JP1987004458U
Other languages
English (en)
Japanese (ja)
Other versions
JPS63114409U (pt
Inventor
八郎 横田
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.)
Alpine Electronics Inc
Original Assignee
Alpine Electronics 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 Alpine Electronics Inc filed Critical Alpine Electronics Inc
Priority to JP1987004458U priority Critical patent/JPH0636495Y2/ja
Publication of JPS63114409U publication Critical patent/JPS63114409U/ja
Application granted granted Critical
Publication of JPH0636495Y2 publication Critical patent/JPH0636495Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
JP1987004458U 1987-01-16 1987-01-16 フォーカスサーボ制御装置 Expired - Lifetime JPH0636495Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987004458U JPH0636495Y2 (ja) 1987-01-16 1987-01-16 フォーカスサーボ制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987004458U JPH0636495Y2 (ja) 1987-01-16 1987-01-16 フォーカスサーボ制御装置

Publications (2)

Publication Number Publication Date
JPS63114409U JPS63114409U (pt) 1988-07-23
JPH0636495Y2 true JPH0636495Y2 (ja) 1994-09-21

Family

ID=30785139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987004458U Expired - Lifetime JPH0636495Y2 (ja) 1987-01-16 1987-01-16 フォーカスサーボ制御装置

Country Status (1)

Country Link
JP (1) JPH0636495Y2 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2706294B2 (ja) * 1989-01-25 1998-01-28 キヤノン株式会社 光学的情報記録再生装置
JP2716610B2 (ja) * 1991-10-16 1998-02-18 三菱電機株式会社 フォーカス制御装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919246A (ja) * 1982-07-24 1984-01-31 Pioneer Electronic Corp 光学式情報読取装置におけるフオ−カスサ−ボ引込装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919246A (ja) * 1982-07-24 1984-01-31 Pioneer Electronic Corp 光学式情報読取装置におけるフオ−カスサ−ボ引込装置

Also Published As

Publication number Publication date
JPS63114409U (pt) 1988-07-23

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