JPS57169939A - Recording carrier and device using it - Google Patents

Recording carrier and device using it

Info

Publication number
JPS57169939A
JPS57169939A JP57031933A JP3193382A JPS57169939A JP S57169939 A JPS57169939 A JP S57169939A JP 57031933 A JP57031933 A JP 57031933A JP 3193382 A JP3193382 A JP 3193382A JP S57169939 A JPS57169939 A JP S57169939A
Authority
JP
Japan
Prior art keywords
recording
tracking
recording part
section
index
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.)
Pending
Application number
JP57031933A
Other languages
Japanese (ja)
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 JP57031933A priority Critical patent/JPS57169939A/en
Publication of JPS57169939A publication Critical patent/JPS57169939A/en
Pending 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
    • G11B7/0938—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 perform accurate tracking of recording and to realize high density of recording, by providing different index sections to correct the shift in tracking a recording part, at each section of the information recording part. CONSTITUTION:Two types of multiplex hatched parts 20 and 21 are located at both sides of an information recording part 19 of a recording carrier 18 as the index parts for tracking shift correction. A beam from a beam source 28 is condensed on the recording part 19 via a half mirror 29 and a head 27a. The reflected beam is introduced to a demodulator 33 via a half mirror 32, a part is converged to a point P of a detection section 5 via a lens 34 and no signal is outputted from detecting elements 36 and 37. If the beam is shifted to the outer or inner side of the recording part 19. Fourier spectrum 41 or 42 due to the multiplex hatched parts 20 and 21 is obtained, a control signal from the element 36 or 37 is applied to terminals 30 and 31 via a switching circuit 38 and control circuits 42 and 43 to accurately trace the recording. Since only one tracking shift correction index is required for each recording section, the density of recording can be achieved.
JP57031933A 1982-03-01 1982-03-01 Recording carrier and device using it Pending JPS57169939A (en)

Priority Applications (1)

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

Applications Claiming Priority (1)

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

Related Parent Applications (1)

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

Publications (1)

Publication Number Publication Date
JPS57169939A true JPS57169939A (en) 1982-10-19

Family

ID=12344764

Family Applications (1)

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

Country Status (1)

Country Link
JP (1) JPS57169939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011099659A (en) * 2009-10-05 2011-05-19 Daikin Industries Ltd Indoor unit for air conditioner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838856A (en) * 1981-08-31 1983-03-07 Kyoto Daiichi Kagaku:Kk Automatic liquid chromatograph apparatus
JPS5842526A (en) * 1981-08-31 1983-03-12 Toshiba Corp Automatic wafer feeder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838856A (en) * 1981-08-31 1983-03-07 Kyoto Daiichi Kagaku:Kk Automatic liquid chromatograph apparatus
JPS5842526A (en) * 1981-08-31 1983-03-12 Toshiba Corp Automatic wafer feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011099659A (en) * 2009-10-05 2011-05-19 Daikin Industries Ltd Indoor unit for air conditioner

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