JPS5379335A - Memory unit - Google Patents

Memory unit

Info

Publication number
JPS5379335A
JPS5379335A JP15485076A JP15485076A JPS5379335A JP S5379335 A JPS5379335 A JP S5379335A JP 15485076 A JP15485076 A JP 15485076A JP 15485076 A JP15485076 A JP 15485076A JP S5379335 A JPS5379335 A JP S5379335A
Authority
JP
Japan
Prior art keywords
memory unit
equipment moving
grately
search
combining
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
JP15485076A
Other languages
Japanese (ja)
Inventor
Kazuo Shigematsu
Takeshi Maeda
Zenji Tsutsumi
Seiji Yonezawa
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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15485076A priority Critical patent/JPS5379335A/en
Publication of JPS5379335A publication Critical patent/JPS5379335A/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
    • G11B7/085—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

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE:To search a desired track at a high speed with combining an equipment moving grately and an equipment moving minutely by providing an area where information is not recorded in the rotary light memory.
JP15485076A 1976-12-24 1976-12-24 Memory unit Pending JPS5379335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15485076A JPS5379335A (en) 1976-12-24 1976-12-24 Memory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15485076A JPS5379335A (en) 1976-12-24 1976-12-24 Memory unit

Publications (1)

Publication Number Publication Date
JPS5379335A true JPS5379335A (en) 1978-07-13

Family

ID=15593257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15485076A Pending JPS5379335A (en) 1976-12-24 1976-12-24 Memory unit

Country Status (1)

Country Link
JP (1) JPS5379335A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124580A1 (en) * 1982-11-01 1984-11-14 Storage Technology Partners Fine and coarse servo system for access and tracking on an optical disk.
EP1111672B2 (en) † 1990-09-24 2016-08-03 Tessera, Inc. Semiconductor chip assemblies, methods of making same and components for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124580A1 (en) * 1982-11-01 1984-11-14 Storage Technology Partners Fine and coarse servo system for access and tracking on an optical disk.
JPS59501968A (en) * 1982-11-01 1984-11-22 スト−リツジ・テクノロジ−・パ−トナ−ズ・トウ− Fine and coarse movement servo system for access and tracking in optical disks
EP1111672B2 (en) † 1990-09-24 2016-08-03 Tessera, Inc. Semiconductor chip assemblies, methods of making same and components for same

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