JPS6421774A - Magnetic head positioning system for floppy disk device - Google Patents

Magnetic head positioning system for floppy disk device

Info

Publication number
JPS6421774A
JPS6421774A JP17764487A JP17764487A JPS6421774A JP S6421774 A JPS6421774 A JP S6421774A JP 17764487 A JP17764487 A JP 17764487A JP 17764487 A JP17764487 A JP 17764487A JP S6421774 A JPS6421774 A JP S6421774A
Authority
JP
Japan
Prior art keywords
track
distortion
information
magnetic head
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.)
Pending
Application number
JP17764487A
Other languages
Japanese (ja)
Inventor
Toshikazu Hashimoto
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP17764487A priority Critical patent/JPS6421774A/en
Publication of JPS6421774A publication Critical patent/JPS6421774A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE:To always make a magnetic head possible to follow a target data track even when the change of a temperature and a humidity occurs by reading the servo information of a track for servo, and considering the direction and the distortion quantity of the distortion of a track against a revolution angle from a standard point, to be distortion information. CONSTITUTION:The record of the data information of a floppy disk device or the servo information of the track for servo before reproducing operation, is read out, and the direction and the distortion quantity of the distortion of the track against the revolution angle from the standard point is stored as the distortion information. At the time of the positioning to an optional data track, by using in common both a position error signal obtained from the servo information of the respective sector of the said data track and the distortion information, and when the magnetic head can not read out the servo information of the specified sector, by determining the direction of the track following of the magnetic head and a following operation quantity for the said track based on the distortion information, a positioning and following operation is performed. Thus, even when a floppy disk deforms anisotropically by the change of a temperature humidity condition, the magnetic head can be made to exactly follow the target data track.
JP17764487A 1987-07-15 1987-07-15 Magnetic head positioning system for floppy disk device Pending JPS6421774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17764487A JPS6421774A (en) 1987-07-15 1987-07-15 Magnetic head positioning system for floppy disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17764487A JPS6421774A (en) 1987-07-15 1987-07-15 Magnetic head positioning system for floppy disk device

Publications (1)

Publication Number Publication Date
JPS6421774A true JPS6421774A (en) 1989-01-25

Family

ID=16034597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17764487A Pending JPS6421774A (en) 1987-07-15 1987-07-15 Magnetic head positioning system for floppy disk device

Country Status (1)

Country Link
JP (1) JPS6421774A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59227435A (en) * 1983-06-08 1984-12-20 Mitsubishi Metal Corp Mold for transfer molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59227435A (en) * 1983-06-08 1984-12-20 Mitsubishi Metal Corp Mold for transfer molding

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