JPS59171085A - デイスクヘツドのサ−ボ回路 - Google Patents

デイスクヘツドのサ−ボ回路

Info

Publication number
JPS59171085A
JPS59171085A JP4571983A JP4571983A JPS59171085A JP S59171085 A JPS59171085 A JP S59171085A JP 4571983 A JP4571983 A JP 4571983A JP 4571983 A JP4571983 A JP 4571983A JP S59171085 A JPS59171085 A JP S59171085A
Authority
JP
Japan
Prior art keywords
circuit
servo
double
disk
disk head
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
JP4571983A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0418391B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Masafumi Naito
雅文 内藤
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.)
Fujitsu General Ltd
Aerojet Rocketdyne Holdings Inc
Original Assignee
Fujitsu General Ltd
Gencorp 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 Fujitsu General Ltd, Gencorp Inc filed Critical Fujitsu General Ltd
Priority to JP4571983A priority Critical patent/JPS59171085A/ja
Publication of JPS59171085A publication Critical patent/JPS59171085A/ja
Publication of JPH0418391B2 publication Critical patent/JPH0418391B2/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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0946—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Optical Recording Or Reproduction (AREA)
JP4571983A 1983-03-18 1983-03-18 デイスクヘツドのサ−ボ回路 Granted JPS59171085A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4571983A JPS59171085A (ja) 1983-03-18 1983-03-18 デイスクヘツドのサ−ボ回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4571983A JPS59171085A (ja) 1983-03-18 1983-03-18 デイスクヘツドのサ−ボ回路

Publications (2)

Publication Number Publication Date
JPS59171085A true JPS59171085A (ja) 1984-09-27
JPH0418391B2 JPH0418391B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-03-27

Family

ID=12727153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4571983A Granted JPS59171085A (ja) 1983-03-18 1983-03-18 デイスクヘツドのサ−ボ回路

Country Status (1)

Country Link
JP (1) JPS59171085A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63222377A (ja) * 1987-03-11 1988-09-16 Hitachi Ltd デイスク状情報記憶装置
JPH02183310A (ja) * 1989-01-10 1990-07-17 Fujitsu Ltd サーボ回路の速度検出ゲイン自動調整方法
JPH02183311A (ja) * 1989-01-10 1990-07-17 Fujitsu Ltd サーボ回路の位置制御オフセット調整方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63222377A (ja) * 1987-03-11 1988-09-16 Hitachi Ltd デイスク状情報記憶装置
JPH02183310A (ja) * 1989-01-10 1990-07-17 Fujitsu Ltd サーボ回路の速度検出ゲイン自動調整方法
JPH02183311A (ja) * 1989-01-10 1990-07-17 Fujitsu Ltd サーボ回路の位置制御オフセット調整方法

Also Published As

Publication number Publication date
JPH0418391B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-03-27

Similar Documents

Publication Publication Date Title
JPH0325290Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP2793698B2 (ja) フオーカスオフセット補正方法
JPS59171085A (ja) デイスクヘツドのサ−ボ回路
US4825064A (en) Apparatus for energizing a semiconductor laser array having a plurality of light beam emitting points
EP0558293B1 (en) An optical information recording-reproducing method and an apparatus using the method
US5029151A (en) Optical information processing apparatus including a limiter for limiting error of focusing and/or tracking actuators and a circuit for adjusting the limit range thereof
JPS63187439A (ja) 光磁気記録方式
JPH0773496A (ja) 半導体レーザ装置
JP2625671B2 (ja) 焦点位置制御装置
JPH0510247Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP2780185B2 (ja) フォーカスサーチ方法
JP2000048382A (ja) 記録媒体記録再生装置及び光ピックアップ
JP2592050Y2 (ja) 光ディスクプレーヤ
KR910005648B1 (ko) 종류가 다른 광디스크 재생장치의 포커스 서보회로
JPS6017061Y2 (ja) 光学式デイスク再生装置のフオ−カス制御回路
KR890003586Y1 (ko) 촛점 입력구동신호 발생기
JPS61182638A (ja) 光学式記録再生装置のフオ−カスサ−ボ回路
JPS6273432A (ja) トラツキング制御装置
JP2695834B2 (ja) 情報再生装置
JPS59171086A (ja) デイスクヘツドのトラツキング装置
JP3311161B2 (ja) 光学式データ読み取り装置
JPS6118811B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPH0397125A (ja) 光学的情報記録再生装置
JPS60229240A (ja) 光学的情報再生装置
JPH0520815B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)