JPS58194171A - Head driving and controlling system of magnetic disc device - Google Patents

Head driving and controlling system of magnetic disc device

Info

Publication number
JPS58194171A
JPS58194171A JP7472282A JP7472282A JPS58194171A JP S58194171 A JPS58194171 A JP S58194171A JP 7472282 A JP7472282 A JP 7472282A JP 7472282 A JP7472282 A JP 7472282A JP S58194171 A JPS58194171 A JP S58194171A
Authority
JP
Japan
Prior art keywords
optimum
magnetic disc
disc device
speed profile
profile
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
JP7472282A
Other languages
Japanese (ja)
Inventor
Ichiro Araki
Shigemasa Yoshida
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.)
COMPUT BASIC MACH TECHNOL RES ASSOC
DENSHI KEISANKI KIHON GIJUTSU KENKIYUU KUMIAI
DENSHI KEISANKI KIPPON GIJUTSU
Original Assignee
COMPUT BASIC MACH TECHNOL RES ASSOC
DENSHI KEISANKI KIHON GIJUTSU KENKIYUU KUMIAI
DENSHI KEISANKI KIPPON GIJUTSU
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 COMPUT BASIC MACH TECHNOL RES ASSOC, DENSHI KEISANKI KIHON GIJUTSU KENKIYUU KUMIAI, DENSHI KEISANKI KIPPON GIJUTSU filed Critical COMPUT BASIC MACH TECHNOL RES ASSOC
Priority to JP7472282A priority Critical patent/JPS58194171A/en
Publication of JPS58194171A publication Critical patent/JPS58194171A/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

Abstract

PURPOSE:To set an optimum speed profile individually for each device, by performing calibration seek at the start of operation of a magnetic disc device. CONSTITUTION:The calibration seek is executed at the start of operation of a device, the time is counted at an optimum profile generator 9, and an electronic tachometer outputs a signal to stop the counting when the head speed is reduced to zero. Thus, the optimum profile generator 9 detects a lagged time T, the value of T is substituted in a particular equation to obtain the value of a compensated time constant C, and the speed profile is set again. In the seek operation afterward, the optimum speed profile for each device is attained by using the speed profile set again.
JP7472282A 1982-05-04 1982-05-04 Head driving and controlling system of magnetic disc device Pending JPS58194171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7472282A JPS58194171A (en) 1982-05-04 1982-05-04 Head driving and controlling system of magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7472282A JPS58194171A (en) 1982-05-04 1982-05-04 Head driving and controlling system of magnetic disc device

Publications (1)

Publication Number Publication Date
JPS58194171A true JPS58194171A (en) 1983-11-12

Family

ID=13555394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7472282A Pending JPS58194171A (en) 1982-05-04 1982-05-04 Head driving and controlling system of magnetic disc device

Country Status (1)

Country Link
JP (1) JPS58194171A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110214A (en) * 1984-11-05 1986-05-28 Yoshida Kogyo Kk <Ykk> Device for controlling opening width of automatic door
EP0378327A2 (en) * 1989-01-10 1990-07-18 Fujitsu Limited Automatic adjustment system for servo circuit of a magnetic disk apparatus
JPH03260969A (en) * 1990-03-12 1991-11-20 Fujitsu Ltd Positioning control system
US6041033A (en) * 1996-12-18 2000-03-21 Matsushita Electric Industrial Co., Ltd. Disk holding device
EP1895517A3 (en) * 2006-08-30 2008-10-01 Fujitsu Limited Servo data demodulation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5085785A (en) * 1973-12-08 1975-07-10
JPS5383716A (en) * 1976-12-29 1978-07-24 Fujitsu Ltd System for positioning magnetic device
JPS5564662A (en) * 1978-11-08 1980-05-15 Toshiba Corp Self-compensator for magnetic disk memory unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5085785A (en) * 1973-12-08 1975-07-10
JPS5383716A (en) * 1976-12-29 1978-07-24 Fujitsu Ltd System for positioning magnetic device
JPS5564662A (en) * 1978-11-08 1980-05-15 Toshiba Corp Self-compensator for magnetic disk memory unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110214A (en) * 1984-11-05 1986-05-28 Yoshida Kogyo Kk <Ykk> Device for controlling opening width of automatic door
EP0378327A2 (en) * 1989-01-10 1990-07-18 Fujitsu Limited Automatic adjustment system for servo circuit of a magnetic disk apparatus
JPH03260969A (en) * 1990-03-12 1991-11-20 Fujitsu Ltd Positioning control system
US6041033A (en) * 1996-12-18 2000-03-21 Matsushita Electric Industrial Co., Ltd. Disk holding device
EP1895517A3 (en) * 2006-08-30 2008-10-01 Fujitsu Limited Servo data demodulation
US7463439B2 (en) 2006-08-30 2008-12-09 Fujitsu Limited Control device, storage device, storage medium, servo data demodulation method, repeatable velocity error measuring device, and computer product

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