JPS6236286B2 - - Google Patents

Info

Publication number
JPS6236286B2
JPS6236286B2 JP55138165A JP13816580A JPS6236286B2 JP S6236286 B2 JPS6236286 B2 JP S6236286B2 JP 55138165 A JP55138165 A JP 55138165A JP 13816580 A JP13816580 A JP 13816580A JP S6236286 B2 JPS6236286 B2 JP S6236286B2
Authority
JP
Japan
Prior art keywords
signal
track
shaped
output
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.)
Expired
Application number
JP55138165A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5764337A (en
Inventor
Kenji Koishi
Tomio Yoshida
Isao Sato
Shunji Harikae
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 JP13816580A priority Critical patent/JPS5764337A/ja
Priority to US06/301,420 priority patent/US4484319A/en
Priority to DE8181107323T priority patent/DE3175265D1/de
Priority to EP81107323A priority patent/EP0048441B1/en
Publication of JPS5764337A publication Critical patent/JPS5764337A/ja
Publication of JPS6236286B2 publication Critical patent/JPS6236286B2/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
    • G11B7/085—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
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP13816580A 1980-09-19 1980-10-01 Track retrieval device Granted JPS5764337A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13816580A JPS5764337A (en) 1980-10-01 1980-10-01 Track retrieval device
US06/301,420 US4484319A (en) 1980-09-19 1981-09-11 Apparatus for locating a track on disc-like optical information carriers
DE8181107323T DE3175265D1 (en) 1980-09-19 1981-09-16 Track searching arrangement for an optical information recording and reproducing apparatus
EP81107323A EP0048441B1 (en) 1980-09-19 1981-09-16 Track searching arrangement for an optical information recording and reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13816580A JPS5764337A (en) 1980-10-01 1980-10-01 Track retrieval device

Publications (2)

Publication Number Publication Date
JPS5764337A JPS5764337A (en) 1982-04-19
JPS6236286B2 true JPS6236286B2 (en18) 1987-08-06

Family

ID=15215538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13816580A Granted JPS5764337A (en) 1980-09-19 1980-10-01 Track retrieval device

Country Status (1)

Country Link
JP (1) JPS5764337A (en18)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234786U (en18) * 1988-08-30 1990-03-06
JPH0345425U (en18) * 1989-09-11 1991-04-26

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224444A (ja) * 1985-07-25 1987-02-02 Pioneer Electronic Corp トラック横切り方向検出装置
DE3887126T2 (de) * 1987-08-29 1994-04-28 Fujitsu Ltd Methoden zum zugang einer optischen aufzeichnungsspur.
JP2600880B2 (ja) * 1987-08-29 1997-04-16 富士通株式会社 光記録トラックのアクセス方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51117005A (en) * 1975-04-07 1976-10-14 Hitachi Ltd Tracking absorption equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51117005A (en) * 1975-04-07 1976-10-14 Hitachi Ltd Tracking absorption equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234786U (en18) * 1988-08-30 1990-03-06
JPH0345425U (en18) * 1989-09-11 1991-04-26

Also Published As

Publication number Publication date
JPS5764337A (en) 1982-04-19

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