JPS52143039A - Scan position indicator - Google Patents

Scan position indicator

Info

Publication number
JPS52143039A
JPS52143039A JP6029976A JP6029976A JPS52143039A JP S52143039 A JPS52143039 A JP S52143039A JP 6029976 A JP6029976 A JP 6029976A JP 6029976 A JP6029976 A JP 6029976A JP S52143039 A JPS52143039 A JP S52143039A
Authority
JP
Japan
Prior art keywords
position indicator
scan position
lser
projecting
indicate
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
JP6029976A
Other languages
Japanese (ja)
Inventor
Yuji Tsuyukuchi
Sadanobu Kawabe
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.)
Teac Corp
Mitsubishi Electric Corp
Original Assignee
Teac Corp
Mitsubishi Electric Corp
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 Teac Corp, Mitsubishi Electric Corp filed Critical Teac Corp
Priority to JP6029976A priority Critical patent/JPS52143039A/en
Publication of JPS52143039A publication Critical patent/JPS52143039A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • 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
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • G11B7/08588—Sled-type positioners with position sensing by means of an auxiliary system using an external scale

Landscapes

  • Optical Transform (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE:To indicate the position of a laser beam disc in the radius direction by taking out part of a lser beam and projecting it onto the calibrated plate.
JP6029976A 1976-05-25 1976-05-25 Scan position indicator Pending JPS52143039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6029976A JPS52143039A (en) 1976-05-25 1976-05-25 Scan position indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6029976A JPS52143039A (en) 1976-05-25 1976-05-25 Scan position indicator

Publications (1)

Publication Number Publication Date
JPS52143039A true JPS52143039A (en) 1977-11-29

Family

ID=13138141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6029976A Pending JPS52143039A (en) 1976-05-25 1976-05-25 Scan position indicator

Country Status (1)

Country Link
JP (1) JPS52143039A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258337A (en) * 1985-05-10 1986-11-15 Matsushita Electric Ind Co Ltd Detector for position of optical head

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51305A (en) * 1974-06-20 1976-01-06 Mansei Kogyo Kk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51305A (en) * 1974-06-20 1976-01-06 Mansei Kogyo Kk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258337A (en) * 1985-05-10 1986-11-15 Matsushita Electric Ind Co Ltd Detector for position of optical head

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