JPS60191440A - 光学式情報装置 - Google Patents

光学式情報装置

Info

Publication number
JPS60191440A
JPS60191440A JP59047430A JP4743084A JPS60191440A JP S60191440 A JPS60191440 A JP S60191440A JP 59047430 A JP59047430 A JP 59047430A JP 4743084 A JP4743084 A JP 4743084A JP S60191440 A JPS60191440 A JP S60191440A
Authority
JP
Japan
Prior art keywords
focus
error signal
disk
output
guide groove
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
JP59047430A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0458657B2 (enExample
Inventor
Tomiya Miyazaki
富弥 宮崎
Noboru Wakami
昇 若見
Yoshikazu Goto
芳和 後藤
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59047430A priority Critical patent/JPS60191440A/ja
Publication of JPS60191440A publication Critical patent/JPS60191440A/ja
Publication of JPH0458657B2 publication Critical patent/JPH0458657B2/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
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
JP59047430A 1984-03-12 1984-03-12 光学式情報装置 Granted JPS60191440A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59047430A JPS60191440A (ja) 1984-03-12 1984-03-12 光学式情報装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59047430A JPS60191440A (ja) 1984-03-12 1984-03-12 光学式情報装置

Publications (2)

Publication Number Publication Date
JPS60191440A true JPS60191440A (ja) 1985-09-28
JPH0458657B2 JPH0458657B2 (enExample) 1992-09-18

Family

ID=12774931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59047430A Granted JPS60191440A (ja) 1984-03-12 1984-03-12 光学式情報装置

Country Status (1)

Country Link
JP (1) JPS60191440A (enExample)

Also Published As

Publication number Publication date
JPH0458657B2 (enExample) 1992-09-18

Similar Documents

Publication Publication Date Title
GB2110843A (en) A tracking servo signal generating device in an apparatus for reading recorded information
JPS6218975B2 (enExample)
JPS61188745A (ja) フオ−カスサ−ボ制御方式
JP2002197686A (ja) 光ピックアップ装置
JPS58118039A (ja) 光デイスクトラツク追跡装置
JPS60191440A (ja) 光学式情報装置
JP3166329B2 (ja) サンプルサーボ装置
JPS59148148A (ja) 光学式情報記録再生装置
JPS61156540A (ja) 光情報記録再生装置
JPH077528B2 (ja) 光学式情報記録装置
JP2709819B2 (ja) 光学的ディスク記録再生装置
JPS6032140A (ja) 光情報記録再生装置
JPS63100628A (ja) 光学的記録再生装置
KR100237561B1 (ko) 포커스 서보 재인입 방법 및 장치
JPS6124029A (ja) 光学的情報記録再生装置
JPS618742A (ja) 光学式情報記録再生装置
JPS6040534A (ja) トラツキング制御方法及び装置
JPS63175232A (ja) 光ヘツド装置のフオ−カス制御装置
JPH11185264A (ja) 光プローブの位置決め装置及び記録媒体
JPS61222038A (ja) デイスク装置
JPS6111941A (ja) 光学式記録再生装置
JPS607628A (ja) 光情報再生装置
JPS61156541A (ja) 光情報記録再生装置
JPS6231031A (ja) 情報記録装置のフオ−カスサ−ボ引込み装置
JP2000251278A (ja) 光ピックアップ装置