JPS56148770A - Self-servo magnetic disk device - Google Patents

Self-servo magnetic disk device

Info

Publication number
JPS56148770A
JPS56148770A JP5066880A JP5066880A JPS56148770A JP S56148770 A JPS56148770 A JP S56148770A JP 5066880 A JP5066880 A JP 5066880A JP 5066880 A JP5066880 A JP 5066880A JP S56148770 A JPS56148770 A JP S56148770A
Authority
JP
Japan
Prior art keywords
optical fiber
magnetic head
track
illumination
servo
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.)
Granted
Application number
JP5066880A
Other languages
Japanese (ja)
Other versions
JPS6242350B2 (en
Inventor
Hironori Goto
Nagaaki Etsuno
Seiya Ogawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5066880A priority Critical patent/JPS56148770A/en
Publication of JPS56148770A publication Critical patent/JPS56148770A/en
Publication of JPS6242350B2 publication Critical patent/JPS6242350B2/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks

Landscapes

  • Magnetic Record Carriers (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To generate precise servo information by an inexpensive system by inputting a servo signal to a servo circuit by detecting servo information and track information by an optical pickup provided together with a magnetic head. CONSTITUTION:Optical pickup 5, consisting of illumination/read part 6.1 made of optical fiber and a couple of deviation detection parts 6.2 and 6.3, is fitted together with a thin-film magnetic head. If the optical fiber of illumination/read part 6.1 as wide as track TR shifts in position from the track, illumination light from optical fiber 6.1 strikes inward or outward guard band GB of a disk and then the incident light to the bevel of guard band GB is photodetected as reflected light by deviation detection parts 6.2 or 6.3 provided at the opposite side across optical fiber 6.1. Therefore, the deviation of the magnetic head is detected by the output of the deviation detection part having received the reflected light. Thus, precise servo information is generated by the inexpensive system.
JP5066880A 1980-04-17 1980-04-17 Self-servo magnetic disk device Granted JPS56148770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5066880A JPS56148770A (en) 1980-04-17 1980-04-17 Self-servo magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5066880A JPS56148770A (en) 1980-04-17 1980-04-17 Self-servo magnetic disk device

Publications (2)

Publication Number Publication Date
JPS56148770A true JPS56148770A (en) 1981-11-18
JPS6242350B2 JPS6242350B2 (en) 1987-09-08

Family

ID=12865321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5066880A Granted JPS56148770A (en) 1980-04-17 1980-04-17 Self-servo magnetic disk device

Country Status (1)

Country Link
JP (1) JPS56148770A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771415A (en) * 1985-02-27 1988-09-13 Brother Kogyo Kabushiki Kaisha Optical data storage and readout apparatus and head, using optical fibers between stationary and movable units
US5087997A (en) * 1988-03-17 1992-02-11 Victor Company Of Japan, Ltd. Position control system for read/write device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5394910A (en) * 1976-12-29 1978-08-19 Fujitsu Ltd Magnetic recording disc
JPS546510A (en) * 1977-06-17 1979-01-18 Fujitsu Ltd Self-servo system of magnetic discs
JPS5473610A (en) * 1977-11-24 1979-06-13 Fujitsu Ltd Optical positioning device of magnetic head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5394910A (en) * 1976-12-29 1978-08-19 Fujitsu Ltd Magnetic recording disc
JPS546510A (en) * 1977-06-17 1979-01-18 Fujitsu Ltd Self-servo system of magnetic discs
JPS5473610A (en) * 1977-11-24 1979-06-13 Fujitsu Ltd Optical positioning device of magnetic head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771415A (en) * 1985-02-27 1988-09-13 Brother Kogyo Kabushiki Kaisha Optical data storage and readout apparatus and head, using optical fibers between stationary and movable units
US5087997A (en) * 1988-03-17 1992-02-11 Victor Company Of Japan, Ltd. Position control system for read/write device

Also Published As

Publication number Publication date
JPS6242350B2 (en) 1987-09-08

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