DE3882918T2 - Fokusregelsystem für optische Scheibenvorrichtung mit lichtempfindlichen Elementen in der Fokusebene des Bildes der Informationsstruktur. - Google Patents

Fokusregelsystem für optische Scheibenvorrichtung mit lichtempfindlichen Elementen in der Fokusebene des Bildes der Informationsstruktur.

Info

Publication number
DE3882918T2
DE3882918T2 DE88310704T DE3882918T DE3882918T2 DE 3882918 T2 DE3882918 T2 DE 3882918T2 DE 88310704 T DE88310704 T DE 88310704T DE 3882918 T DE3882918 T DE 3882918T DE 3882918 T2 DE3882918 T2 DE 3882918T2
Authority
DE
Germany
Prior art keywords
image
light
control system
optical disk
disk device
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 - Fee Related
Application number
DE88310704T
Other languages
English (en)
Other versions
DE3882918D1 (de
Inventor
Hiromichi Ishibashi
Shinichi Tanaka
Akira Matsubara
Tsuyoshi Okada
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
Priority claimed from JP29003187A external-priority patent/JPH0782652B2/ja
Priority claimed from JP29003087A external-priority patent/JPH0782651B2/ja
Priority claimed from JP63216571A external-priority patent/JPH0264921A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3882918D1 publication Critical patent/DE3882918D1/de
Publication of DE3882918T2 publication Critical patent/DE3882918T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G11B7/09—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
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
DE88310704T 1987-11-17 1988-11-14 Fokusregelsystem für optische Scheibenvorrichtung mit lichtempfindlichen Elementen in der Fokusebene des Bildes der Informationsstruktur. Expired - Fee Related DE3882918T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP29003187A JPH0782652B2 (ja) 1987-11-17 1987-11-17 焦点誤差検出装置
JP29003087A JPH0782651B2 (ja) 1987-11-17 1987-11-17 焦点誤差検出装置
JP63216571A JPH0264921A (ja) 1988-08-31 1988-08-31 焦点誤差検出装置

Publications (2)

Publication Number Publication Date
DE3882918D1 DE3882918D1 (de) 1993-09-09
DE3882918T2 true DE3882918T2 (de) 1994-01-20

Family

ID=27329901

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88310704T Expired - Fee Related DE3882918T2 (de) 1987-11-17 1988-11-14 Fokusregelsystem für optische Scheibenvorrichtung mit lichtempfindlichen Elementen in der Fokusebene des Bildes der Informationsstruktur.

Country Status (4)

Country Link
US (1) US4998235A (de)
EP (1) EP0317224B1 (de)
KR (1) KR910006658B1 (de)
DE (1) DE3882918T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0770073B2 (ja) * 1989-08-04 1995-07-31 松下電器産業株式会社 光学ヘッド
JP2716569B2 (ja) * 1990-04-25 1998-02-18 パイオニア株式会社 光学式情報読取り装置
JPH0775081B2 (ja) * 1990-06-27 1995-08-09 パイオニア株式会社 光ピックアップ
JP2795528B2 (ja) * 1990-07-25 1998-09-10 パイオニア株式会社 信号検出装置
JPH04106733A (ja) * 1990-08-27 1992-04-08 Matsushita Electric Ind Co Ltd 位相比較装置と焦点誤差検出装置
US5278401A (en) * 1991-08-13 1994-01-11 Asahi Kogaku Kogyo Kabushiki Kaisha Optical disc apparatus having five light receiving areas for detecting focus error and tracking error
JP2630151B2 (ja) * 1992-01-30 1997-07-16 日本ビクター株式会社 光ディスク装置
JP3372413B2 (ja) * 1995-12-04 2003-02-04 シャープ株式会社 光ピックアップ装置及び光記録再生装置
TW364992B (en) * 1996-04-25 1999-07-21 Toshiba Corp Optic data regeneration apparatus and control method thereof
IL119020A (en) * 1996-08-06 2000-02-29 Elop Electrooptics Ind Ltd Photochromic supra-density optical memory
US6104689A (en) * 1997-07-22 2000-08-15 Asahi Kogaku Kogyo Kabushiki Kaisha Sensor system for optical disc drive
KR100312803B1 (ko) * 1997-10-06 2001-12-20 니시무로 타이죠 광헤드장치
CN1275230A (zh) * 1998-06-15 2000-11-29 皇家菲利浦电子有限公司 用于扫描光记录载体的装置
KR100555478B1 (ko) 1999-06-18 2006-03-03 삼성전자주식회사 안정된 오차신호 검출 가능한 광픽업장치

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280150B1 (fr) * 1974-07-26 1977-01-07 Thomson Brandt Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture
NL177157C (nl) * 1975-02-28 1985-08-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur.
US4097730A (en) * 1975-07-02 1978-06-27 Zenith Radio Corporation Focus correction system for video disc player
NL7600843A (nl) * 1976-01-28 1977-08-01 Philips Nv Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht.
JPS54124705A (en) * 1978-03-20 1979-09-27 Teac Corp Optical reproducer
JPS55101142A (en) * 1979-01-29 1980-08-01 Teac Co Focus detection unit of optical reproducing device
JPS5647933A (en) * 1979-09-25 1981-04-30 Sony Corp Optical signal head
JPS57183639A (en) * 1981-05-08 1982-11-12 Hitachi Ltd Focus detector
JPS60214429A (ja) * 1984-04-11 1985-10-26 Hitachi Ltd トラツキング誤差検出装置
JPH0640392B2 (ja) * 1986-08-29 1994-05-25 三菱電機株式会社 光学式情報記録再生装置の集光スポツト位置検出装置
US4819220A (en) * 1986-09-12 1989-04-04 Olympus Optical Co., Ltd. Optical information recording and reproducing apparatus
JPH0626972Y2 (ja) * 1986-10-03 1994-07-20 パイオニア株式会社 光学式ピツクアツプ装置

Also Published As

Publication number Publication date
EP0317224A2 (de) 1989-05-24
DE3882918D1 (de) 1993-09-09
US4998235A (en) 1991-03-05
KR910006658B1 (ko) 1991-08-30
EP0317224A3 (en) 1989-08-30
KR890008766A (ko) 1989-07-12
EP0317224B1 (de) 1993-08-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee