JPS5774839A - Optical head - Google Patents

Optical head

Info

Publication number
JPS5774839A
JPS5774839A JP14973380A JP14973380A JPS5774839A JP S5774839 A JPS5774839 A JP S5774839A JP 14973380 A JP14973380 A JP 14973380A JP 14973380 A JP14973380 A JP 14973380A JP S5774839 A JPS5774839 A JP S5774839A
Authority
JP
Japan
Prior art keywords
optical head
focus
moved
controlling
track
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
JP14973380A
Other languages
English (en)
Japanese (ja)
Other versions
JPH026134B2 (enrdf_load_stackoverflow
Inventor
Susumu Yonezawa
Kikuji Kato
Akinori Watabe
Hiroo Ukita
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14973380A priority Critical patent/JPS5774839A/ja
Publication of JPS5774839A publication Critical patent/JPS5774839A/ja
Publication of JPH026134B2 publication Critical patent/JPH026134B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
JP14973380A 1980-10-25 1980-10-25 Optical head Granted JPS5774839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14973380A JPS5774839A (en) 1980-10-25 1980-10-25 Optical head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14973380A JPS5774839A (en) 1980-10-25 1980-10-25 Optical head

Publications (2)

Publication Number Publication Date
JPS5774839A true JPS5774839A (en) 1982-05-11
JPH026134B2 JPH026134B2 (enrdf_load_stackoverflow) 1990-02-07

Family

ID=15481618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14973380A Granted JPS5774839A (en) 1980-10-25 1980-10-25 Optical head

Country Status (1)

Country Link
JP (1) JPS5774839A (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936033U (ja) * 1982-08-31 1984-03-06 日本電気ホームエレクトロニクス株式会社 光学式ピツクアツプ
JPS5965943A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5965941A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5965942A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5965940A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5987630A (ja) * 1982-11-10 1984-05-21 Hitachi Ltd 光学ヘツド駆動装置
JPS5999225U (ja) * 1982-12-23 1984-07-05 日本電気ホームエレクトロニクス株式会社 光学式ピツクアツプ装置
JPS59193551A (ja) * 1983-04-18 1984-11-02 Sharp Corp 光集束位置制御装置
JPS59195336A (ja) * 1983-04-19 1984-11-06 Sharp Corp 光集束位置制御装置
JPS61118117U (enrdf_load_stackoverflow) * 1984-12-28 1986-07-25
JPS61214230A (ja) * 1985-03-20 1986-09-24 Hitachi Ltd 光デイスク装置
JPS62250525A (ja) * 1986-04-22 1987-10-31 Kyocera Corp 高速ランダムアクセス方法
JPS62175419U (enrdf_load_stackoverflow) * 1986-04-22 1987-11-07
JPS62289934A (ja) * 1986-06-09 1987-12-16 Fujitsu Ltd 光ディスク装置のトラッキング回路
JPS63181124A (ja) * 1987-01-22 1988-07-26 Matsushita Electric Ind Co Ltd 光デイスク装置
JPH03203033A (ja) * 1989-12-28 1991-09-04 Marantz Japan Inc 光学式ピックアップのトラッキングに対するブレーキ回路
JPH0628680A (ja) * 1993-04-02 1994-02-04 Hitachi Ltd アクセス方法及び情報記憶装置

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936033U (ja) * 1982-08-31 1984-03-06 日本電気ホームエレクトロニクス株式会社 光学式ピツクアツプ
JPS5965943A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5965941A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5965942A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5965940A (ja) * 1982-10-06 1984-04-14 Alps Electric Co Ltd 対物レンズ駆動装置
JPS5987630A (ja) * 1982-11-10 1984-05-21 Hitachi Ltd 光学ヘツド駆動装置
JPS5999225U (ja) * 1982-12-23 1984-07-05 日本電気ホームエレクトロニクス株式会社 光学式ピツクアツプ装置
JPS59193551A (ja) * 1983-04-18 1984-11-02 Sharp Corp 光集束位置制御装置
JPS59195336A (ja) * 1983-04-19 1984-11-06 Sharp Corp 光集束位置制御装置
JPS61118117U (enrdf_load_stackoverflow) * 1984-12-28 1986-07-25
JPS61214230A (ja) * 1985-03-20 1986-09-24 Hitachi Ltd 光デイスク装置
JPS62250525A (ja) * 1986-04-22 1987-10-31 Kyocera Corp 高速ランダムアクセス方法
JPS62175419U (enrdf_load_stackoverflow) * 1986-04-22 1987-11-07
JPS62289934A (ja) * 1986-06-09 1987-12-16 Fujitsu Ltd 光ディスク装置のトラッキング回路
JPS63181124A (ja) * 1987-01-22 1988-07-26 Matsushita Electric Ind Co Ltd 光デイスク装置
JPH03203033A (ja) * 1989-12-28 1991-09-04 Marantz Japan Inc 光学式ピックアップのトラッキングに対するブレーキ回路
JPH0628680A (ja) * 1993-04-02 1994-02-04 Hitachi Ltd アクセス方法及び情報記憶装置

Also Published As

Publication number Publication date
JPH026134B2 (enrdf_load_stackoverflow) 1990-02-07

Similar Documents

Publication Publication Date Title
JPS5774839A (en) Optical head
SE7602603L (sv) Optisk fokuseringsanordning for fokusering av ett stralknippe
DE3680300D1 (de) Steuersystem fuer einen fokus-servomechanismus eines optischen plattensystems mit p-abweichungseinstellung.
KR870010506A (ko) 광 자기 기록 장치
JPS6437729A (en) Optical information recording and reproducing device
JPS56130840A (en) Pickup controlling mechanism for video disc recorder
JPS57179954A (en) Optical type disc player
JPS5794940A (en) Optical disk device
JPS5668936A (en) Reader for optical information
JPS5284748A (en) Device for finely adjusting position at which laser light is focused
JPS5542368A (en) Pickup controller
JPS6435736A (en) Optical head in optical disk recording and reproducing device
JPS53147507A (en) Focus position controller
JPS5542369A (en) Pickup controller
JPS5769540A (en) Optical information recording and producting device
JPS53110805A (en) Optical information recording/reproducing device
JPS5471612A (en) Servo track writing device of magnetic disc memory device
JPS56165937A (en) Optical recorder and reproducer
JPS5650521A (en) Annealing device for semiconductor wafer using laser beam
JPS6413234A (en) Optical disk recording and reproducing device
JPS5730132A (en) Magnetooptical storage device
JPS5577042A (en) Optical information recording and reproducing device
JPS6263826U (enrdf_load_stackoverflow)
JPS5476107A (en) Focus controller
JPS5753835A (ja) Hikaribiimuhenkosochi