JPS636928B2 - - Google Patents

Info

Publication number
JPS636928B2
JPS636928B2 JP58124716A JP12471683A JPS636928B2 JP S636928 B2 JPS636928 B2 JP S636928B2 JP 58124716 A JP58124716 A JP 58124716A JP 12471683 A JP12471683 A JP 12471683A JP S636928 B2 JPS636928 B2 JP S636928B2
Authority
JP
Japan
Prior art keywords
signal
tracking
track
recording
signals
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
JP58124716A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59146447A (ja
Inventor
Masaru Matsumura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 to JP57058122A priority Critical patent/JPS6058530B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP58124716A priority patent/JPS59146447A/ja
Publication of JPS59146447A publication Critical patent/JPS59146447A/ja
Publication of JPS636928B2 publication Critical patent/JPS636928B2/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
    • G11B7/0901—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 track following 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
JP58124716A 1982-04-09 1983-07-11 情報記録媒体の信号書き込み方法 Granted JPS59146447A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57058122A JPS6058530B2 (ja) 1982-04-09 1982-04-09 情報再生装置
JP58124716A JPS59146447A (ja) 1982-04-09 1983-07-11 情報記録媒体の信号書き込み方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57058122A JPS6058530B2 (ja) 1982-04-09 1982-04-09 情報再生装置
JP58124716A JPS59146447A (ja) 1982-04-09 1983-07-11 情報記録媒体の信号書き込み方法

Publications (2)

Publication Number Publication Date
JPS59146447A JPS59146447A (ja) 1984-08-22
JPS636928B2 true JPS636928B2 (enrdf_load_stackoverflow) 1988-02-13

Family

ID=26399204

Family Applications (2)

Application Number Title Priority Date Filing Date
JP57058122A Expired JPS6058530B2 (ja) 1982-04-09 1982-04-09 情報再生装置
JP58124716A Granted JPS59146447A (ja) 1982-04-09 1983-07-11 情報記録媒体の信号書き込み方法

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP57058122A Expired JPS6058530B2 (ja) 1982-04-09 1982-04-09 情報再生装置

Country Status (1)

Country Link
JP (2) JPS6058530B2 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141524U (enrdf_load_stackoverflow) * 1989-04-25 1990-11-28

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648084A (en) * 1981-12-10 1987-03-03 Discovision Associates Storage medium track pitch detector
FR2567673B1 (fr) * 1984-07-10 1986-11-07 Thomson Alcatel Gigadisc Support d'information inscriptible optiquement selon une piste definie par des motifs de pregravure et dispositif optique de suivi de piste mettant en oeuvre un tel support
JPS6380365U (enrdf_load_stackoverflow) * 1986-11-17 1988-05-27

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593333A (en) * 1969-11-26 1971-07-13 Ibm Position detection for a track following servo system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141524U (enrdf_load_stackoverflow) * 1989-04-25 1990-11-28

Also Published As

Publication number Publication date
JPS58118041A (ja) 1983-07-13
JPS6058530B2 (ja) 1985-12-20
JPS59146447A (ja) 1984-08-22

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