JPS6218975B2 - - Google Patents

Info

Publication number
JPS6218975B2
JPS6218975B2 JP56111630A JP11163081A JPS6218975B2 JP S6218975 B2 JPS6218975 B2 JP S6218975B2 JP 56111630 A JP56111630 A JP 56111630A JP 11163081 A JP11163081 A JP 11163081A JP S6218975 B2 JPS6218975 B2 JP S6218975B2
Authority
JP
Japan
Prior art keywords
output
information
pit
gate circuit
split photodetector
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
JP56111630A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5814332A (ja
Inventor
Mitsushige Kondo
Kazuo Okada
Kazuo Hirasawa
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 JP56111630A priority Critical patent/JPS5814332A/ja
Priority to DE8282105546T priority patent/DE3273550D1/de
Priority to EP82105546A priority patent/EP0070408B1/en
Priority to US06/393,944 priority patent/US4502134A/en
Priority to CA000407362A priority patent/CA1199110A/en
Publication of JPS5814332A publication Critical patent/JPS5814332A/ja
Publication of JPS6218975B2 publication Critical patent/JPS6218975B2/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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP56111630A 1981-07-16 1981-07-16 光学式情報再生装置 Granted JPS5814332A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56111630A JPS5814332A (ja) 1981-07-16 1981-07-16 光学式情報再生装置
DE8282105546T DE3273550D1 (en) 1981-07-16 1982-06-24 Optical signal reproducing system
EP82105546A EP0070408B1 (en) 1981-07-16 1982-06-24 Optical signal reproducing system
US06/393,944 US4502134A (en) 1981-07-16 1982-06-30 Optical disc signal reproducing system with tilt immunization
CA000407362A CA1199110A (en) 1981-07-16 1982-07-15 Optical disc signal reproducing system with tilt immunization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56111630A JPS5814332A (ja) 1981-07-16 1981-07-16 光学式情報再生装置

Publications (2)

Publication Number Publication Date
JPS5814332A JPS5814332A (ja) 1983-01-27
JPS6218975B2 true JPS6218975B2 (en]) 1987-04-25

Family

ID=14566181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56111630A Granted JPS5814332A (ja) 1981-07-16 1981-07-16 光学式情報再生装置

Country Status (5)

Country Link
US (1) US4502134A (en])
EP (1) EP0070408B1 (en])
JP (1) JPS5814332A (en])
CA (1) CA1199110A (en])
DE (1) DE3273550D1 (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04115767U (ja) * 1991-03-26 1992-10-14 ミツミ電機株式会社 コネクタ

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817549A (ja) * 1981-07-22 1983-02-01 Hitachi Ltd 光学的トラツク追従装置
JPS58125242A (ja) * 1982-01-22 1983-07-26 Victor Co Of Japan Ltd 光学的情報信号再生装置のトラツキング誤差検出方式
JPS58208944A (ja) * 1982-05-31 1983-12-05 Sony Corp 光学ヘツド制御信号発生装置
JPS5911543A (ja) * 1982-07-10 1984-01-21 Sony Corp 光学式デイスク再生装置
JPS5919250A (ja) * 1982-07-21 1984-01-31 Hitachi Ltd 情報の記録再生装置
JPS59146448A (ja) * 1983-02-10 1984-08-22 Sony Corp 光学式デイスク・プレ−ヤ
JPS59157854A (ja) * 1983-02-28 1984-09-07 Sony Corp 光学式デイスク・プレ−ヤ−の制御装置
JPS609018U (ja) * 1983-06-24 1985-01-22 パイオニア株式会社 光学式記録情報読取装置
JPS6020326A (ja) * 1983-07-14 1985-02-01 Olympus Optical Co Ltd 光学的記録装置
AU575332B2 (en) * 1983-07-29 1988-07-28 Sony Corporation Optical disk pick-up
NL8303564A (nl) * 1983-10-17 1985-05-17 Philips Nv Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager.
JPS60143448A (ja) * 1983-12-29 1985-07-29 Sony Corp スキユ−エラ−検出回路
JPS60120522U (ja) * 1984-01-23 1985-08-14 パイオニア株式会社 光学式記録情報読取装置
AU580793B2 (en) * 1984-01-31 1989-02-02 Sony Corporation Tracking error detector for optical head
JPS60195745A (ja) * 1984-03-16 1985-10-04 Pioneer Electronic Corp トラツキングサ−ボ信号生成方式
JPS6124033A (ja) * 1984-07-13 1986-02-01 Sony Corp 光学式ヘツドのトラツキング誤差検出装置
DE3546796C2 (en]) * 1984-10-01 1993-09-23 Mitsubishi Denki K.K., Tokio/Tokyo, Jp
NL8500592A (nl) * 1985-03-04 1986-10-01 Philips Nv Electro-optische inrichting.
DE3618720A1 (de) * 1985-06-05 1986-12-11 Hitachi, Ltd., Tokio/Tokyo Verfahren und vorrichtung zur spurnachfuehrung bei bildplatten
CA1270559A (en) * 1985-10-30 1990-06-19 Shigeo Terashima Tracking circuit for an optical information recording and reproducing apparatus
JPS62109236A (ja) * 1985-11-07 1987-05-20 Teac Co トラツキングサ−ボ装置
JPS63153456A (ja) * 1986-12-18 1988-06-25 Yokogawa Electric Corp 光デイスクテストシステム
JPS63153455A (ja) * 1986-12-18 1988-06-25 Yokogawa Electric Corp 光デイスクテストシステム
DE3714050A1 (de) * 1987-04-28 1988-11-17 Telefunken Fernseh & Rundfunk Verfahren zur korrektur einer fehlstelle in spuren eines aufzeichnungstraegers fuer digitale signale
JP2585281B2 (ja) * 1987-08-19 1997-02-26 株式会社日立製作所 光ディスク装置
US5696756A (en) * 1995-04-14 1997-12-09 Kabushiki Kaishia Toshiba Optical disk having an evaluation pattern for evaluating the optical disk
MY125349A (en) 1999-05-03 2006-07-31 Toshiba Samsung Storage Tech Korea Corporation Automatic tilt compensator and optical recording/reproducing apparatus having the same
JP3709857B2 (ja) * 2002-06-17 2005-10-26 ソニー株式会社 動体検出イメージセンサ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909608A (en) * 1972-12-26 1975-09-30 Thomson Csf Reproducing device for the optical reading out of a record carrying an embossed print
US3919697A (en) * 1974-06-26 1975-11-11 Battelle Development Corp Data record tracking using track identifying information in the gaps between recorded data groups
US4094013A (en) * 1975-05-22 1978-06-06 U.S. Philips Corporation Optical storage disk system with disk track guide sectors
JPS54124705A (en) * 1978-03-20 1979-09-27 Teac Corp Optical reproducer
US4180822A (en) * 1978-04-13 1979-12-25 Rca Corporation Optical scanner and recorder
US4232201A (en) * 1978-11-24 1980-11-04 Mca Discovision, Inc. Dithered center tracking system
JPS55163635A (en) * 1979-06-04 1980-12-19 Mitsubishi Electric Corp Optical tracking device
JPS6048809B2 (ja) * 1979-10-16 1985-10-29 パイオニアビデオ株式会社 情報読取装置におけるトラッキングサ−ボ引込装置
JPS5774837A (en) * 1980-10-25 1982-05-11 Olympus Optical Co Ltd Signal detection system of optical information reproducing device
US4414655A (en) * 1981-03-31 1983-11-08 Discovision Associates Scanning beam control system
US4406000A (en) * 1981-03-31 1983-09-20 Discovision Associates Tracking system for optical record medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04115767U (ja) * 1991-03-26 1992-10-14 ミツミ電機株式会社 コネクタ

Also Published As

Publication number Publication date
JPS5814332A (ja) 1983-01-27
DE3273550D1 (en) 1986-11-06
CA1199110A (en) 1986-01-07
EP0070408A1 (en) 1983-01-26
US4502134A (en) 1985-02-26
EP0070408B1 (en) 1986-10-01

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