JPS5514595A - Tracking unit - Google Patents

Tracking unit

Info

Publication number
JPS5514595A
JPS5514595A JP1880179A JP1880179A JPS5514595A JP S5514595 A JPS5514595 A JP S5514595A JP 1880179 A JP1880179 A JP 1880179A JP 1880179 A JP1880179 A JP 1880179A JP S5514595 A JPS5514595 A JP S5514595A
Authority
JP
Japan
Prior art keywords
carrier
recording
multiplex
rotary
moved
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
JP1880179A
Other languages
Japanese (ja)
Other versions
JPS5838856B2 (en
Inventor
Kiyonobu Endo
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP54018801A priority Critical patent/JPS5838856B2/en
Publication of JPS5514595A publication Critical patent/JPS5514595A/en
Publication of JPS5838856B2 publication Critical patent/JPS5838856B2/en
Expired 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
    • 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 Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To enable to read out correct information, by performing the position control of the emitted beam depending on the reflection beam from a plurality of multiplex lines in the rotary recording carrier. CONSTITUTION:The unit provides the rotary recording carrier providing two or more types of multiplex lines 20 and 21 having a given slope with the rotating radius of the recording carrier 18 having the record section 19 recording the signal in spiral corresponding to the recording section 19, means 28 emitting beams on the recording carrier 18, means 33 receiving the reflection beam from the carrier 18, and means 35 detecting from which multiplex line the reflection beam from the carrier 18 is obtained. When the means 35 obtains the input from one multiplex line, the emission beam is moved to the rotary center shaft of the carrier 18, and when obtaining the input from another multiplex line, the emission beam is moved to counter rotation shaft of the carrier 18.
JP54018801A 1979-02-19 1979-02-19 tracking device Expired JPS5838856B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54018801A JPS5838856B2 (en) 1979-02-19 1979-02-19 tracking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54018801A JPS5838856B2 (en) 1979-02-19 1979-02-19 tracking device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP48058924A Division JPS5842526B2 (en) 1973-05-25 1973-05-25 kilokutantai

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP57031933A Division JPS57169939A (en) 1982-03-01 1982-03-01 Recording carrier and device using it

Publications (2)

Publication Number Publication Date
JPS5514595A true JPS5514595A (en) 1980-02-01
JPS5838856B2 JPS5838856B2 (en) 1983-08-25

Family

ID=11981685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54018801A Expired JPS5838856B2 (en) 1979-02-19 1979-02-19 tracking device

Country Status (1)

Country Link
JP (1) JPS5838856B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261837A (en) * 1984-06-06 1985-12-25 Nippon Solid Co Ltd Method of separating floatable substance in water area
JP5638486B2 (en) 2011-08-09 2014-12-10 三井海洋開発株式会社 Bubble lift system and bubble lift method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus

Also Published As

Publication number Publication date
JPS5838856B2 (en) 1983-08-25

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