JPS5584055A - Optical video disk device - Google Patents

Optical video disk device

Info

Publication number
JPS5584055A
JPS5584055A JP15581978A JP15581978A JPS5584055A JP S5584055 A JPS5584055 A JP S5584055A JP 15581978 A JP15581978 A JP 15581978A JP 15581978 A JP15581978 A JP 15581978A JP S5584055 A JPS5584055 A JP S5584055A
Authority
JP
Japan
Prior art keywords
disk
optical
mirror
circuit
head
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
JP15581978A
Other languages
Japanese (ja)
Inventor
Juko Sugaya
Isao Hoshino
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15581978A priority Critical patent/JPS5584055A/en
Publication of JPS5584055A publication Critical patent/JPS5584055A/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
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors

Landscapes

  • Optical Head (AREA)

Abstract

PURPOSE:To secure the selection of the disk through some contrivance applied to the optical system and without moving the disk circuit or the head up and down, thus increasing the speed for writing and reading to/out the disk. CONSTITUTION:Disk pack 20 is formed through the unified structure of plural units of disk 21 and capable of the both-surface recording to be rotated with rotary servo motor 22. At the same time, a pair of movable optical heads 23 are provided by holding the disk between and moved up and down via head shift motor 29 to select an optional disk. And fixed mirror group 30 is located at the positions each where the length of the optical path conversion circuit comprising rotary mirror 28 and mirror group 30, and also the angle of mirror 28 is varied so that the optical path may be turned toward the selected disk. In this way, actuator 43, the disk circuit and the light path conversion optical system can be fixed, and only the optical head is shifted to select the disk. Thus the speed can be increased for both writing and reading.
JP15581978A 1978-12-19 1978-12-19 Optical video disk device Pending JPS5584055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15581978A JPS5584055A (en) 1978-12-19 1978-12-19 Optical video disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15581978A JPS5584055A (en) 1978-12-19 1978-12-19 Optical video disk device

Publications (1)

Publication Number Publication Date
JPS5584055A true JPS5584055A (en) 1980-06-24

Family

ID=15614166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15581978A Pending JPS5584055A (en) 1978-12-19 1978-12-19 Optical video disk device

Country Status (1)

Country Link
JP (1) JPS5584055A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944402A (en) * 1972-08-11 1974-04-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944402A (en) * 1972-08-11 1974-04-26

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