JPS5720969A - Speed control system for data converter of data storage device - Google Patents

Speed control system for data converter of data storage device

Info

Publication number
JPS5720969A
JPS5720969A JP9341680A JP9341680A JPS5720969A JP S5720969 A JPS5720969 A JP S5720969A JP 9341680 A JP9341680 A JP 9341680A JP 9341680 A JP9341680 A JP 9341680A JP S5720969 A JPS5720969 A JP S5720969A
Authority
JP
Japan
Prior art keywords
tracks
group
coinciding
vibration frequency
storage device
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
JP9341680A
Other languages
Japanese (ja)
Inventor
Hiroshi Koriyama
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 JP9341680A priority Critical patent/JPS5720969A/en
Publication of JPS5720969A publication Critical patent/JPS5720969A/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
    • G11B5/54—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 into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To facilitate positioning by preventing a seek interval and the vibration frequency of a base from coinciding with each other, by using a speed profile which corresponds to a movement distance when moving the magnetic head group of a magnetic disk device. CONSTITUTION:When a magnetic head group 1 is moved from one optional position to another optional position on a magnetic disk 2, a number equal to a difference between their tracks is set in a difference counter 11, whose contents go down successeively with a cylinder pulse generated by a pulse generating circuit 16 each time the group crosses a track, thereby inputting the result to function generators 14-14<n>. Simultaneously, a counter 12 counts the number of tracks the group crossed, and a gate 13 selects one of the generators 14-14<n> on the basis of the number of tracks, thereby determining a speed profile by its output. Then, D/A conversion 15 is performed to output a speed set signal 17. Thus, a specific seek interval and the vibration frequency of a base 5 are prevented from coinciding with each other, and positioning a carriage 3 is facilitated.
JP9341680A 1980-07-09 1980-07-09 Speed control system for data converter of data storage device Pending JPS5720969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9341680A JPS5720969A (en) 1980-07-09 1980-07-09 Speed control system for data converter of data storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9341680A JPS5720969A (en) 1980-07-09 1980-07-09 Speed control system for data converter of data storage device

Publications (1)

Publication Number Publication Date
JPS5720969A true JPS5720969A (en) 1982-02-03

Family

ID=14081689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9341680A Pending JPS5720969A (en) 1980-07-09 1980-07-09 Speed control system for data converter of data storage device

Country Status (1)

Country Link
JP (1) JPS5720969A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965975A (en) * 1982-10-05 1984-04-14 Comput Basic Mach Technol Res Assoc Magnetic disk storage device
JPS59168508A (en) * 1983-03-15 1984-09-22 Matsushita Electric Ind Co Ltd High-speed positioning controller
JPS6016207U (en) * 1983-07-06 1985-02-04 株式会社　協豊製作所 Drive control device for positioning device
JPH03164813A (en) * 1989-11-22 1991-07-16 Honda Motor Co Ltd Acceleration/deceleration control method for robot or the like
JPH0447415A (en) * 1990-06-14 1992-02-17 Amada Co Ltd Method and device for controlling linear motor in work carrying robot

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965975A (en) * 1982-10-05 1984-04-14 Comput Basic Mach Technol Res Assoc Magnetic disk storage device
JPS59168508A (en) * 1983-03-15 1984-09-22 Matsushita Electric Ind Co Ltd High-speed positioning controller
JPS6016207U (en) * 1983-07-06 1985-02-04 株式会社　協豊製作所 Drive control device for positioning device
JPH03164813A (en) * 1989-11-22 1991-07-16 Honda Motor Co Ltd Acceleration/deceleration control method for robot or the like
JPH0447415A (en) * 1990-06-14 1992-02-17 Amada Co Ltd Method and device for controlling linear motor in work carrying robot

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