JPS5977638A - 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 - Google Patents

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

Info

Publication number
JPS5977638A
JPS5977638A JP18779182A JP18779182A JPS5977638A JP S5977638 A JPS5977638 A JP S5977638A JP 18779182 A JP18779182 A JP 18779182A JP 18779182 A JP18779182 A JP 18779182A JP S5977638 A JPS5977638 A JP S5977638A
Authority
JP
Japan
Prior art keywords
circuit
focus
signal
focus servo
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.)
Granted
Application number
JP18779182A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6346495B2 (enrdf_load_stackoverflow
Inventor
Shohei Yamazaki
山崎　詳平
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 Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
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 true JPS5977638A (ja) 1984-05-04
JPS6346495B2 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)

Cited By (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
JPH01211246A (ja) * 1988-02-18 1989-08-24 Fujitsu Ten Ltd 光学デイスク再生装置
JPH0373424A (ja) * 1989-08-15 1991-03-28 Fujitsu Ltd フォーカスサーボゲイン制御方法
JPH0352818U (enrdf_load_stackoverflow) * 1989-09-22 1991-05-22
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
JPH05242507A (ja) * 1992-02-27 1993-09-21 Fujitsu Ltd 光ディスク装置のフォーカスサーボ制御装置
JPH0680959U (ja) * 1994-02-07 1994-11-15 矢野技研株式会社 流路切換構造

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791141U (enrdf_load_stackoverflow) * 1980-11-27 1982-06-04
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791141U (enrdf_load_stackoverflow) * 1980-11-27 1982-06-04
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

Cited By (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
JPH01211246A (ja) * 1988-02-18 1989-08-24 Fujitsu Ten Ltd 光学デイスク再生装置
JPH0373424A (ja) * 1989-08-15 1991-03-28 Fujitsu Ltd フォーカスサーボゲイン制御方法
JPH0352818U (enrdf_load_stackoverflow) * 1989-09-22 1991-05-22
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
JPH05242507A (ja) * 1992-02-27 1993-09-21 Fujitsu Ltd 光ディスク装置のフォーカスサーボ制御装置
JPH0680959U (ja) * 1994-02-07 1994-11-15 矢野技研株式会社 流路切換構造

Also Published As

Publication number Publication date
JPS6346495B2 (enrdf_load_stackoverflow) 1988-09-16

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