JPS57181434A - Position detector for head in disc storage device - Google Patents

Position detector for head in disc storage device

Info

Publication number
JPS57181434A
JPS57181434A JP6646981A JP6646981A JPS57181434A JP S57181434 A JPS57181434 A JP S57181434A JP 6646981 A JP6646981 A JP 6646981A JP 6646981 A JP6646981 A JP 6646981A JP S57181434 A JPS57181434 A JP S57181434A
Authority
JP
Japan
Prior art keywords
head
light
position detector
optical
moving direction
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
JP6646981A
Other languages
Japanese (ja)
Inventor
Atsushi Ishihara
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 JP6646981A priority Critical patent/JPS57181434A/en
Publication of JPS57181434A publication Critical patent/JPS57181434A/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

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To obtain a signal corresponding to the moving direction without using a means for detecting the moving direction of a head, by providing an optical scale having a pattern where a part transmitting a light from a light emitting element and a part shielding the light are alternately arranged. CONSTITUTION:An optical scale 15 has a pattern where a part transmitting light and a part shielding light are alternately arranged, and the scale 15 moves toward (a) or (b) together with an optical head 13 and the position of the optical head 13 is detected with a position detector 17 fixed on a base 16. In this case, the position detector 17 detects the position of the optical head 13 with a so- called overlapped lattice type detection system. With this constitution, the position of the head can be detected by only adding a simple circuit without using a means for detecting the moving direction of the head.
JP6646981A 1981-05-01 1981-05-01 Position detector for head in disc storage device Pending JPS57181434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6646981A JPS57181434A (en) 1981-05-01 1981-05-01 Position detector for head in disc storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6646981A JPS57181434A (en) 1981-05-01 1981-05-01 Position detector for head in disc storage device

Publications (1)

Publication Number Publication Date
JPS57181434A true JPS57181434A (en) 1982-11-08

Family

ID=13316670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6646981A Pending JPS57181434A (en) 1981-05-01 1981-05-01 Position detector for head in disc storage device

Country Status (1)

Country Link
JP (1) JPS57181434A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614207U (en) * 1984-06-08 1986-01-11 日立工機株式会社 Motor control circuit
US4607956A (en) * 1983-02-17 1986-08-26 Tokyo Shibaura Denki Kabushiki Kaisha Position detecting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607956A (en) * 1983-02-17 1986-08-26 Tokyo Shibaura Denki Kabushiki Kaisha Position detecting apparatus
JPS614207U (en) * 1984-06-08 1986-01-11 日立工機株式会社 Motor control circuit

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