EP0000946A3 - Apparatus for controlling the movement of the data head in a moving-head data recording system - Google Patents

Apparatus for controlling the movement of the data head in a moving-head data recording system Download PDF

Info

Publication number
EP0000946A3
EP0000946A3 EP78100748A EP78100748A EP0000946A3 EP 0000946 A3 EP0000946 A3 EP 0000946A3 EP 78100748 A EP78100748 A EP 78100748A EP 78100748 A EP78100748 A EP 78100748A EP 0000946 A3 EP0000946 A3 EP 0000946A3
Authority
EP
European Patent Office
Prior art keywords
track
head
data
recorded
moving
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Withdrawn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
EP78100748A
Other languages
German (de)
French (fr)
Other versions
EP0000946A2 (en
Inventor
Robert N. Mcknight
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of EP0000946A2 publication Critical patent/EP0000946A2/en
Publication of EP0000946A3 publication Critical patent/EP0000946A3/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Withdrawn legal-status Critical Current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
    • 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
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and circuits therefor
    • 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
    • G11B5/59633—Servo formatting

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

Two servoing functions, both operating from the data reading and recording transducer, are performed in a high performance movinghead disc drive. One servo rapidly moves the head from its current track to any other track utilizing absolute track identifying addresses recorded in the inter-sector gap between data sectors. Once located on a track, the other servo maintains head location precisely over the center of that track while data is being read or recorded employing track following information also recorded in the inter-sector gap. The resolution of transducer location is enhanced by secondary use of the track following information.
EP78100748A 1977-08-31 1978-08-25 Apparatus for controlling the movement of the data head in a moving-head data recording system Withdrawn EP0000946A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82931277A 1977-08-31 1977-08-31
US829312 1977-08-31

Publications (2)

Publication Number Publication Date
EP0000946A2 EP0000946A2 (en) 1979-03-07
EP0000946A3 true EP0000946A3 (en) 1979-03-21

Family

ID=25254162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100748A Withdrawn EP0000946A3 (en) 1977-08-31 1978-08-25 Apparatus for controlling the movement of the data head in a moving-head data recording system

Country Status (2)

Country Link
EP (1) EP0000946A3 (en)
JP (1) JPS5445113A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462053A (en) * 1981-07-02 1984-07-24 Irwin International, Inc. Method for controlling a disc head
US4472750A (en) * 1981-07-02 1984-09-18 Irwin Magnetic Systems, Inc. Data record with pre-recorded transducer positioning signals, and system for utilizing same
JPS58218003A (en) * 1982-06-14 1983-12-19 Pioneer Electronic Corp Recording system
JP2616586B2 (en) * 1991-01-16 1997-06-04 松下電器産業株式会社 Magnetic disk and magnetic disk device
DE102017007547A1 (en) * 2017-08-10 2019-02-14 Martin GmbH für Umwelt- und Energietechnik Energy generation system with a combined heat and power plant and a fermentation plant and method for energy production

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593333A (en) * 1969-11-26 1971-07-13 Ibm Position detection for a track following servo system
US3691543A (en) * 1971-02-08 1972-09-12 Ibm Positioning system including servo track configuration and associated demodulator
US3812533A (en) * 1972-12-22 1974-05-21 Vermont Res Corp Information storage unit transducer positioning system
US3838457A (en) * 1973-07-05 1974-09-24 Ibm Track seeking and following servo system
US4027338A (en) * 1975-04-28 1977-05-31 Burroughs Corporation Transducer positioning system for providing coarse positioning
DE2657266A1 (en) * 1975-12-23 1977-07-07 Ibm ADJUSTING DEVICE FOR THE ACCESS ARM OF THE MAGNETIC HEAD OF A MAGNETIC DISK MEMORY
DE2657642A1 (en) * 1975-12-23 1977-07-07 Ibm ADJUSTING DEVICE FOR THE ACCESS ARM OF THE MAGNETIC HEAD OF A MAGNETIC DISK MEMORY
DE2808404A1 (en) * 1977-03-10 1978-09-14 Philips Nv MAGNETIC DISK MEMORY AND MAGNETIC DISK FOR SUCH MEMORY

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593333A (en) * 1969-11-26 1971-07-13 Ibm Position detection for a track following servo system
US3691543A (en) * 1971-02-08 1972-09-12 Ibm Positioning system including servo track configuration and associated demodulator
US3812533A (en) * 1972-12-22 1974-05-21 Vermont Res Corp Information storage unit transducer positioning system
US3838457A (en) * 1973-07-05 1974-09-24 Ibm Track seeking and following servo system
US4027338A (en) * 1975-04-28 1977-05-31 Burroughs Corporation Transducer positioning system for providing coarse positioning
DE2657266A1 (en) * 1975-12-23 1977-07-07 Ibm ADJUSTING DEVICE FOR THE ACCESS ARM OF THE MAGNETIC HEAD OF A MAGNETIC DISK MEMORY
DE2657642A1 (en) * 1975-12-23 1977-07-07 Ibm ADJUSTING DEVICE FOR THE ACCESS ARM OF THE MAGNETIC HEAD OF A MAGNETIC DISK MEMORY
DE2808404A1 (en) * 1977-03-10 1978-09-14 Philips Nv MAGNETIC DISK MEMORY AND MAGNETIC DISK FOR SUCH MEMORY

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 10, no. 6, November 1967, New York. WILFORD et al: "Disk surface digital adressing", page 783 *

Also Published As

Publication number Publication date
EP0000946A2 (en) 1979-03-07
JPS5445113A (en) 1979-04-10

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Inventor name: MCKNIGHT, ROBERT N.