JPH0445916B2 - - Google Patents

Info

Publication number
JPH0445916B2
JPH0445916B2 JP8745283A JP8745283A JPH0445916B2 JP H0445916 B2 JPH0445916 B2 JP H0445916B2 JP 8745283 A JP8745283 A JP 8745283A JP 8745283 A JP8745283 A JP 8745283A JP H0445916 B2 JPH0445916 B2 JP H0445916B2
Authority
JP
Japan
Prior art keywords
actuator
phase
signal
input
equation
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.)
Expired
Application number
JP8745283A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59215079A (ja
Inventor
Motoo Uno
Takeshi Maeda
Yasumitsu Mizoguchi
Masahiro Takasago
Koji Muraoka
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 JP8745283A priority Critical patent/JPS59215079A/ja
Publication of JPS59215079A publication Critical patent/JPS59215079A/ja
Publication of JPH0445916B2 publication Critical patent/JPH0445916B2/ja
Granted 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 To Find And Align With The Track (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Control Of Position Or Direction (AREA)
JP8745283A 1983-05-20 1983-05-20 位置決め装置 Granted JPS59215079A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8745283A JPS59215079A (ja) 1983-05-20 1983-05-20 位置決め装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8745283A JPS59215079A (ja) 1983-05-20 1983-05-20 位置決め装置

Publications (2)

Publication Number Publication Date
JPS59215079A JPS59215079A (ja) 1984-12-04
JPH0445916B2 true JPH0445916B2 (enrdf_load_stackoverflow) 1992-07-28

Family

ID=13915244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8745283A Granted JPS59215079A (ja) 1983-05-20 1983-05-20 位置決め装置

Country Status (1)

Country Link
JP (1) JPS59215079A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864552A (en) * 1986-08-29 1989-09-05 Laser Magnetic Storage International Company Driving signal for coarse servo employing sampled offset signal

Also Published As

Publication number Publication date
JPS59215079A (ja) 1984-12-04

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