JPS54158207A - Head offset controller of movable head type - Google Patents

Head offset controller of movable head type

Info

Publication number
JPS54158207A
JPS54158207A JP6664278A JP6664278A JPS54158207A JP S54158207 A JPS54158207 A JP S54158207A JP 6664278 A JP6664278 A JP 6664278A JP 6664278 A JP6664278 A JP 6664278A JP S54158207 A JPS54158207 A JP S54158207A
Authority
JP
Japan
Prior art keywords
head
servo
track
offset
read out
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
JP6664278A
Other languages
Japanese (ja)
Inventor
Yoshitsugu Kitamura
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
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6664278A priority Critical patent/JPS54158207A/en
Publication of JPS54158207A publication Critical patent/JPS54158207A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To automatically control the offset of a head during the recording and reproducing operations by storing the offset of the head in a register through a head positioning servo-track which is formed outside of the recording and reproducing regions of a disk.
CONSTITUTION: A head calibrating servo-track 9, which is recorded with head position calibrating position signals, is formed outside of the data recording and reproducing region including the O track of the initial positions of the respective disks 2 constituting a disk pack. The information in the track 9 is read out with the head peculiar to the disks 2 and is compared with the servo-information, which is read out by a servo-head, so that the offset of the head resulting from the addition and subtraction in accordance with the difference is stored in a register in case there is a higher difference than an allowable value. The stored content is read out upon the addressing operation of the corresponding head so that the head is automatically offset by the calibration of the servo-control of the head cylinder thereby to effect the accurate tracking operation.
COPYRIGHT: (C)1979,JPO&Japio
JP6664278A 1978-06-05 1978-06-05 Head offset controller of movable head type Pending JPS54158207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6664278A JPS54158207A (en) 1978-06-05 1978-06-05 Head offset controller of movable head type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6664278A JPS54158207A (en) 1978-06-05 1978-06-05 Head offset controller of movable head type

Publications (1)

Publication Number Publication Date
JPS54158207A true JPS54158207A (en) 1979-12-13

Family

ID=13321745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6664278A Pending JPS54158207A (en) 1978-06-05 1978-06-05 Head offset controller of movable head type

Country Status (1)

Country Link
JP (1) JPS54158207A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5629872A (en) * 1979-08-21 1981-03-25 Fujitsu Ltd Disc device having tracking correction circuit
EP0042931A2 (en) * 1980-06-30 1982-01-06 International Business Machines Corporation Magnetic disk initialization method
EP0082337A2 (en) * 1981-12-23 1983-06-29 International Business Machines Corporation Assembly including a flexible disk and a diskdrive therefor
JPS5958672A (en) * 1982-09-28 1984-04-04 Fujitsu Ltd Offset seek control system
JPH04222973A (en) * 1990-12-26 1992-08-12 Nec Eng Ltd Magnetic disk device
US5555139A (en) * 1986-11-10 1996-09-10 Seagate Technology, Inc. Dual track servo system with position interpolation
US10826352B2 (en) 2015-09-30 2020-11-03 Siemens Aktiengesellschaft Electric machine with variable cooling system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5629872A (en) * 1979-08-21 1981-03-25 Fujitsu Ltd Disc device having tracking correction circuit
EP0042931A2 (en) * 1980-06-30 1982-01-06 International Business Machines Corporation Magnetic disk initialization method
EP0042931A3 (en) * 1980-06-30 1982-05-12 International Business Machines Corporation Magnetic disk initialization method
EP0082337A2 (en) * 1981-12-23 1983-06-29 International Business Machines Corporation Assembly including a flexible disk and a diskdrive therefor
JPS5958672A (en) * 1982-09-28 1984-04-04 Fujitsu Ltd Offset seek control system
JPH0142072B2 (en) * 1982-09-28 1989-09-08 Fujitsu Ltd
US5555139A (en) * 1986-11-10 1996-09-10 Seagate Technology, Inc. Dual track servo system with position interpolation
JPH04222973A (en) * 1990-12-26 1992-08-12 Nec Eng Ltd Magnetic disk device
US10826352B2 (en) 2015-09-30 2020-11-03 Siemens Aktiengesellschaft Electric machine with variable cooling system

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