GB9009167D0 - Disk drive - Google Patents

Disk drive

Info

Publication number
GB9009167D0
GB9009167D0 GB909009167A GB9009167A GB9009167D0 GB 9009167 D0 GB9009167 D0 GB 9009167D0 GB 909009167 A GB909009167 A GB 909009167A GB 9009167 A GB9009167 A GB 9009167A GB 9009167 D0 GB9009167 D0 GB 9009167D0
Authority
GB
United Kingdom
Prior art keywords
disk drive
disk
drive
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.)
Withdrawn
Application number
GB909009167A
Other versions
GB2231976A (en
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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
Priority claimed from JP24881689A external-priority patent/JPH0349081A/en
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB9009167D0 publication Critical patent/GB9009167D0/en
Publication of GB2231976A publication Critical patent/GB2231976A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • 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
    • G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
    • G11B5/5556—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means with track following after a "seek"
    • G11B5/556—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means with track following after a "seek" control circuits therefor
GB9009167A 1989-04-24 1990-04-24 Position control Withdrawn GB2231976A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10414789 1989-04-24
JP24881689A JPH0349081A (en) 1989-04-24 1989-09-25 Magnetic disk device

Publications (2)

Publication Number Publication Date
GB9009167D0 true GB9009167D0 (en) 1990-06-20
GB2231976A GB2231976A (en) 1990-11-28

Family

ID=26444679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9009167A Withdrawn GB2231976A (en) 1989-04-24 1990-04-24 Position control

Country Status (2)

Country Link
DE (1) DE4013009A1 (en)
GB (1) GB2231976A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836188A1 (en) * 1996-10-10 1998-04-15 Koninklijke Philips Electronics N.V. Method of defining a dynamic system controller and the controller per se

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959820A (en) * 1974-09-16 1976-05-25 Honeywell Information Systems, Inc. System for increasing the number of data tracks in a magnetic recording system
JPS5921104B2 (en) * 1977-03-08 1984-05-17 日本ビクター株式会社 Tracking servo device in information recording medium playback device
DE2739024A1 (en) * 1977-08-26 1979-03-01 Siemens Ag Control circuit for electronic measurement characteristic - has comparators to which different reference voltages are applied, with switches applying second reference voltages
JPS626580Y2 (en) * 1979-11-17 1987-02-16
US4326226A (en) * 1980-05-08 1982-04-20 Storage Technology Corporation Constant bandwidth automatic gain control
EP0097208B1 (en) * 1982-06-18 1987-03-11 International Business Machines Corporation Head positioning system with automatic gain control
JPS6195367A (en) * 1984-10-17 1986-05-14 Toshiba Corp Image forming device
US4878211A (en) * 1986-05-26 1989-10-31 Pioneer Electronic Corporation Method and apparatus for correcting the loop gain of a servo loop in accordance with measurements during open-loop operation
US4677507A (en) * 1986-05-30 1987-06-30 Magnetic Peripherals Inc. Digital velocity control for a disk drive servo system
JPS6368913A (en) * 1986-09-10 1988-03-28 Fujitsu Ltd Servocontrol circuit
JPS63269324A (en) * 1987-04-28 1988-11-07 Mitsubishi Electric Corp Optical disk driving device
JPH01116972A (en) * 1987-10-30 1989-05-09 Mitsubishi Electric Corp Storage device

Also Published As

Publication number Publication date
GB2231976A (en) 1990-11-28
DE4013009A1 (en) 1990-10-25

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)