JPS5744234A - Optical servo device - Google Patents

Optical servo device

Info

Publication number
JPS5744234A
JPS5744234A JP55118934A JP11893480A JPS5744234A JP S5744234 A JPS5744234 A JP S5744234A JP 55118934 A JP55118934 A JP 55118934A JP 11893480 A JP11893480 A JP 11893480A JP S5744234 A JPS5744234 A JP S5744234A
Authority
JP
Japan
Prior art keywords
envelope
circuit
servo device
optical servo
signal
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
JP55118934A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6141049B2 (enrdf_load_stackoverflow
Inventor
Kazuo Okada
Fumiaki Kondo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55118934A priority Critical patent/JPS5744234A/ja
Publication of JPS5744234A publication Critical patent/JPS5744234A/ja
Publication of JPS6141049B2 publication Critical patent/JPS6141049B2/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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP55118934A 1980-08-27 1980-08-27 Optical servo device Granted JPS5744234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55118934A JPS5744234A (en) 1980-08-27 1980-08-27 Optical servo device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55118934A JPS5744234A (en) 1980-08-27 1980-08-27 Optical servo device

Publications (2)

Publication Number Publication Date
JPS5744234A true JPS5744234A (en) 1982-03-12
JPS6141049B2 JPS6141049B2 (enrdf_load_stackoverflow) 1986-09-12

Family

ID=14748832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55118934A Granted JPS5744234A (en) 1980-08-27 1980-08-27 Optical servo device

Country Status (1)

Country Link
JP (1) JPS5744234A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59501233A (ja) * 1982-06-30 1984-07-12 イ−ストマン・コダック・カンパニ− 光ディスク書き込み／読み出し用の焦点・トラッキング制御装置
JPS6116075A (ja) * 1984-07-02 1986-01-24 Fuji Photo Film Co Ltd 回転磁気記録体トラツキング装置
US4803676A (en) * 1985-03-09 1989-02-07 Deutsche Thomson-Brandt Gmbh Circuitry for an audio or video disk player

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59501233A (ja) * 1982-06-30 1984-07-12 イ−ストマン・コダック・カンパニ− 光ディスク書き込み／読み出し用の焦点・トラッキング制御装置
JPS6116075A (ja) * 1984-07-02 1986-01-24 Fuji Photo Film Co Ltd 回転磁気記録体トラツキング装置
US4803676A (en) * 1985-03-09 1989-02-07 Deutsche Thomson-Brandt Gmbh Circuitry for an audio or video disk player

Also Published As

Publication number Publication date
JPS6141049B2 (enrdf_load_stackoverflow) 1986-09-12

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