JPS55125541A - Retrieval unit - Google Patents

Retrieval unit

Info

Publication number
JPS55125541A
JPS55125541A JP3148379A JP3148379A JPS55125541A JP S55125541 A JPS55125541 A JP S55125541A JP 3148379 A JP3148379 A JP 3148379A JP 3148379 A JP3148379 A JP 3148379A JP S55125541 A JPS55125541 A JP S55125541A
Authority
JP
Japan
Prior art keywords
address
designated address
difference
optical transfer
transfer base
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
JP3148379A
Other languages
English (en)
Japanese (ja)
Inventor
Noboru Wakami
Masahiro Deguchi
Mitsuro Moriya
Yasuhiro Goto
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 JP3148379A priority Critical patent/JPS55125541A/ja
Priority to JP3148479A priority patent/JPS55125542A/ja
Publication of JPS55125541A publication Critical patent/JPS55125541A/ja
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
    • G11B7/085—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
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • 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

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP3148379A 1979-03-16 1979-03-16 Retrieval unit Pending JPS55125541A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3148379A JPS55125541A (en) 1979-03-16 1979-03-16 Retrieval unit
JP3148479A JPS55125542A (en) 1979-03-16 1979-03-16 Optical reproduction unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3148379A JPS55125541A (en) 1979-03-16 1979-03-16 Retrieval unit
JP3148479A JPS55125542A (en) 1979-03-16 1979-03-16 Optical reproduction unit

Publications (1)

Publication Number Publication Date
JPS55125541A true JPS55125541A (en) 1980-09-27

Family

ID=26369957

Family Applications (2)

Application Number Title Priority Date Filing Date
JP3148379A Pending JPS55125541A (en) 1979-03-16 1979-03-16 Retrieval unit
JP3148479A Granted JPS55125542A (en) 1979-03-16 1979-03-16 Optical reproduction unit

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP3148479A Granted JPS55125542A (en) 1979-03-16 1979-03-16 Optical reproduction unit

Country Status (1)

Country Link
JP (2) JPS55125541A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181436A (en) * 1981-05-01 1982-11-08 Toshiba Corp Optical disc device
JPS5952473A (ja) * 1982-09-17 1984-03-27 Matsushita Electric Ind Co Ltd 情報記録再生装置
JPS59117740A (ja) * 1982-12-24 1984-07-07 Hitachi Ltd ビデオデイスクプレ−ヤ
JPS60229281A (ja) * 1984-04-27 1985-11-14 Pioneer Electronic Corp デイスクプレ−ヤにおける情報読取開始方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128030A (ja) * 1982-01-24 1983-07-30 Sony Corp デイスク再生装置
US4435797A (en) * 1982-02-17 1984-03-06 Burroughs Corporation Optical memory system having track following and seeking capabilities
US4432082A (en) * 1982-02-17 1984-02-14 Burroughs Corporation Optical memory system having a long seek capability

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224027B1 (enrdf_load_stackoverflow) * 1971-01-29 1977-06-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224027B1 (enrdf_load_stackoverflow) * 1971-01-29 1977-06-28

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181436A (en) * 1981-05-01 1982-11-08 Toshiba Corp Optical disc device
JPS5952473A (ja) * 1982-09-17 1984-03-27 Matsushita Electric Ind Co Ltd 情報記録再生装置
JPS59117740A (ja) * 1982-12-24 1984-07-07 Hitachi Ltd ビデオデイスクプレ−ヤ
JPS60229281A (ja) * 1984-04-27 1985-11-14 Pioneer Electronic Corp デイスクプレ−ヤにおける情報読取開始方法

Also Published As

Publication number Publication date
JPS55125542A (en) 1980-09-27
JPS6313262B2 (enrdf_load_stackoverflow) 1988-03-24

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