JPS578969A - Recording and reproducing device - Google Patents

Recording and reproducing device

Info

Publication number
JPS578969A
JPS578969A JP8138580A JP8138580A JPS578969A JP S578969 A JPS578969 A JP S578969A JP 8138580 A JP8138580 A JP 8138580A JP 8138580 A JP8138580 A JP 8138580A JP S578969 A JPS578969 A JP S578969A
Authority
JP
Japan
Prior art keywords
track
groove
tracking control
whose
speed
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
JP8138580A
Other languages
Japanese (ja)
Other versions
JPS6346511B2 (en
Inventor
Mitsuro Moriya
Masahiro Deguchi
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 JP8138580A priority Critical patent/JPS578969A/en
Publication of JPS578969A publication Critical patent/JPS578969A/en
Publication of JPS6346511B2 publication Critical patent/JPS6346511B2/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

Abstract

PURPOSE:To retrieve a desired track with high precision and at high speed by detecting a track crossing signal and a track crossing direction without using an external scale. CONSTITUTION:A photodetector 11 is of two-split structure, whose splite line direction agrees with the groove direction of the pattern of a groove 61 included in reflected light 10. Adifference between outputs of the photodetecotr 11 is omplified by a differential amplifier 12, whose output is passed throught a tracking control system compensating circuit 13 and a driving circuit 14 to rotate a reflecting mirror 8; and an element 15 for scanning a light beam 5 is driven to exercise tracking control. For a high-speed track deviation, transportation control is so exercised that the element rotates nearly naturally.
JP8138580A 1980-06-18 1980-06-18 Recording and reproducing device Granted JPS578969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8138580A JPS578969A (en) 1980-06-18 1980-06-18 Recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8138580A JPS578969A (en) 1980-06-18 1980-06-18 Recording and reproducing device

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP14909887A Division JPS63826A (en) 1987-06-17 1987-06-17 Tracking control device
JP62149097A Division JPS63834A (en) 1987-06-17 1987-06-17 Optical recording carrier

Publications (2)

Publication Number Publication Date
JPS578969A true JPS578969A (en) 1982-01-18
JPS6346511B2 JPS6346511B2 (en) 1988-09-16

Family

ID=13744828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8138580A Granted JPS578969A (en) 1980-06-18 1980-06-18 Recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS578969A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146482A (en) * 1983-02-10 1984-08-22 Hitachi Ltd Retrieving device of target track position
JPS61196431A (en) * 1985-02-25 1986-08-30 Sony Corp Optical disk player

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048055A (en) * 1983-08-27 1985-03-15 Konishiroku Photo Ind Co Ltd Method and device for recording

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048055A (en) * 1983-08-27 1985-03-15 Konishiroku Photo Ind Co Ltd Method and device for recording

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146482A (en) * 1983-02-10 1984-08-22 Hitachi Ltd Retrieving device of target track position
JPS61196431A (en) * 1985-02-25 1986-08-30 Sony Corp Optical disk player

Also Published As

Publication number Publication date
JPS6346511B2 (en) 1988-09-16

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