JPS546510A - Self-servo system of magnetic discs - Google Patents

Self-servo system of magnetic discs

Info

Publication number
JPS546510A
JPS546510A JP7169377A JP7169377A JPS546510A JP S546510 A JPS546510 A JP S546510A JP 7169377 A JP7169377 A JP 7169377A JP 7169377 A JP7169377 A JP 7169377A JP S546510 A JPS546510 A JP S546510A
Authority
JP
Japan
Prior art keywords
self
servo system
magnetic discs
width
read
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
JP7169377A
Other languages
Japanese (ja)
Inventor
Nagaaki Etsuno
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 JP7169377A priority Critical patent/JPS546510A/en
Publication of JPS546510A publication Critical patent/JPS546510A/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
    • 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)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To accurately detect the positions of a head by drawing patterns wherein the width in the circumferential direction periodically changes along the radial direction on a magnetic disc and forming position signals by making use of the output pulse width of photo sensors which read this.
JP7169377A 1977-06-17 1977-06-17 Self-servo system of magnetic discs Pending JPS546510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7169377A JPS546510A (en) 1977-06-17 1977-06-17 Self-servo system of magnetic discs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7169377A JPS546510A (en) 1977-06-17 1977-06-17 Self-servo system of magnetic discs

Publications (1)

Publication Number Publication Date
JPS546510A true JPS546510A (en) 1979-01-18

Family

ID=13467871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7169377A Pending JPS546510A (en) 1977-06-17 1977-06-17 Self-servo system of magnetic discs

Country Status (1)

Country Link
JP (1) JPS546510A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148770A (en) * 1980-04-17 1981-11-18 Fujitsu Ltd Self-servo magnetic disk device
WO1985002933A1 (en) * 1983-12-27 1985-07-04 Ncr Corporation Magnetic record medium and apparatus and method for tracking the same
JP2008130187A (en) * 2006-11-22 2008-06-05 Samsung Electronics Co Ltd Magnetic recorder and magnetic recording method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148770A (en) * 1980-04-17 1981-11-18 Fujitsu Ltd Self-servo magnetic disk device
JPS6242350B2 (en) * 1980-04-17 1987-09-08 Fujitsu Ltd
WO1985002933A1 (en) * 1983-12-27 1985-07-04 Ncr Corporation Magnetic record medium and apparatus and method for tracking the same
JP2008130187A (en) * 2006-11-22 2008-06-05 Samsung Electronics Co Ltd Magnetic recorder and magnetic recording method

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