JPS6346495B2 - - Google Patents

Info

Publication number
JPS6346495B2
JPS6346495B2 JP57187791A JP18779182A JPS6346495B2 JP S6346495 B2 JPS6346495 B2 JP S6346495B2 JP 57187791 A JP57187791 A JP 57187791A JP 18779182 A JP18779182 A JP 18779182A JP S6346495 B2 JPS6346495 B2 JP S6346495B2
Authority
JP
Japan
Prior art keywords
circuit
signal
focus
disk
feed
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
Application number
JP57187791A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5977638A (ja
Inventor
Shohei Yamazaki
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.)
Yamaha Corp
Original Assignee
Yamaha 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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP18779182A priority Critical patent/JPS5977638A/ja
Publication of JPS5977638A publication Critical patent/JPS5977638A/ja
Publication of JPS6346495B2 publication Critical patent/JPS6346495B2/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
    • G11B7/0908—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 for focusing only

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Feedback Control In General (AREA)
  • Automatic Focus Adjustment (AREA)
JP18779182A 1982-10-26 1982-10-26 光学式デイスク再生装置におけるフオ−カスサ−ボ制御装置 Granted JPS5977638A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18779182A JPS5977638A (ja) 1982-10-26 1982-10-26 光学式デイスク再生装置におけるフオ−カスサ−ボ制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18779182A JPS5977638A (ja) 1982-10-26 1982-10-26 光学式デイスク再生装置におけるフオ−カスサ−ボ制御装置

Publications (2)

Publication Number Publication Date
JPS5977638A JPS5977638A (ja) 1984-05-04
JPS6346495B2 true JPS6346495B2 (enrdf_load_stackoverflow) 1988-09-16

Family

ID=16212280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18779182A Granted JPS5977638A (ja) 1982-10-26 1982-10-26 光学式デイスク再生装置におけるフオ−カスサ−ボ制御装置

Country Status (1)

Country Link
JP (1) JPS5977638A (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261035A (ja) * 1984-06-06 1985-12-24 Matsushita Electric Ind Co Ltd 光学式情報記録再生装置
JPS61177644A (ja) * 1985-01-31 1986-08-09 Matsushita Electric Ind Co Ltd フオ−カスサ−ボ装置
JP2842476B2 (ja) * 1988-02-18 1999-01-06 富士通テン 株式会社 光学デイスク再生装置
JP2672019B2 (ja) * 1989-08-15 1997-11-05 富士通株式会社 光ディスク装置
JP2541756Y2 (ja) * 1989-09-22 1997-07-16 船井電機 株式会社 光ピックアップ装置
JPH0536613U (ja) * 1991-10-21 1993-05-18 株式会社ケンウツド サ−ボ・ゲインコントロール回路
JP2807118B2 (ja) * 1992-02-27 1998-10-08 富士通株式会社 光ディスク装置
JP2569278Y2 (ja) * 1994-02-07 1998-04-22 矢野技研株式会社 流路切換構造

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6235149Y2 (enrdf_load_stackoverflow) * 1980-11-27 1987-09-07
JPS57186239A (en) * 1981-05-11 1982-11-16 Sony Corp Disc reproducing device
JPS58128031A (ja) * 1982-01-24 1983-07-30 Sony Corp デイスク再生装置

Also Published As

Publication number Publication date
JPS5977638A (ja) 1984-05-04

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