WO1999006992A8 - Method and apparatus for increasing the sample rate of a disc drive with low overhead - Google Patents

Method and apparatus for increasing the sample rate of a disc drive with low overhead

Info

Publication number
WO1999006992A8
WO1999006992A8 PCT/US1998/015482 US9815482W WO9906992A8 WO 1999006992 A8 WO1999006992 A8 WO 1999006992A8 US 9815482 W US9815482 W US 9815482W WO 9906992 A8 WO9906992 A8 WO 9906992A8
Authority
WO
WIPO (PCT)
Prior art keywords
field
burst fields
burst
servo
consolidated
Prior art date
Application number
PCT/US1998/015482
Other languages
French (fr)
Other versions
WO1999006992A1 (en
WO1999006992A9 (en
Inventor
Daniel R Zaharris
Original Assignee
Seagate Technology
Daniel R Zaharris
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 Seagate Technology, Daniel R Zaharris filed Critical Seagate Technology
Publication of WO1999006992A1 publication Critical patent/WO1999006992A1/en
Publication of WO1999006992A8 publication Critical patent/WO1999006992A8/en
Publication of WO1999006992A9 publication Critical patent/WO1999006992A9/en

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
    • G11B5/59633—Servo formatting
    • G11B5/59655—Sector, sample or burst servo format
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • 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
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

A disc drive is disclosed having disc files (20), a spindle motor (27), ganged read/write heads (23), an actuator in the form of a voice coil motor (VCM) (24), servo electronics (30), and a servo information sector (32) recorded on a magnetic recording data surface (26). The recorded servo information is a sequence of mini burst fields (110) interspersed between consolidated burst fields (100). The consolidated burst fields (100) include a preamble field (101), a servo address mark field (102), a digital Gray code field (103), and a series of position burst fields (104-107). The mini burst fields (110) include a preamble field (111), a sync mark field (112) half the length of the servo address mark field (102), and a series of position burst fields (113, 116) that are shorter than the position burst fields (104-107) of the consolidated burst field (100).
PCT/US1998/015482 1997-07-31 1998-07-27 Method and apparatus for increasing the sample rate of a disc drive with low overhead WO1999006992A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7337897P 1997-07-31 1997-07-31
US60/073,378 1997-07-31

Publications (3)

Publication Number Publication Date
WO1999006992A1 WO1999006992A1 (en) 1999-02-11
WO1999006992A8 true WO1999006992A8 (en) 1999-06-17
WO1999006992A9 WO1999006992A9 (en) 1999-08-05

Family

ID=22113350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/015482 WO1999006992A1 (en) 1997-07-31 1998-07-27 Method and apparatus for increasing the sample rate of a disc drive with low overhead

Country Status (1)

Country Link
WO (1) WO1999006992A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8711504B1 (en) 2012-12-18 2014-04-29 HGST Netherlands B.V. Disk drive with a subset of sectors with reduced write-to-read gap
US8861118B1 (en) 2013-12-19 2014-10-14 HGST Netherlands B.V. Disk drive with servo system providing time-syncing for gapless sectors
US9053728B1 (en) 2014-11-21 2015-06-09 HGST Netherlands B.V. Servo systems with PES enhanced integrated servo bursts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5459623A (en) * 1990-12-19 1995-10-17 Integral Peripeherals, Inc. Servo field scheme for high sampling rate and reduced overhead embedded servo systems in disk drives
US5293276A (en) * 1992-01-24 1994-03-08 Fujitsu Limited Method for generating a reference signal from unique servo mark pattern detection
US5777813A (en) * 1994-03-11 1998-07-07 Syquest Technology, Inc. Method and apparatus for reducing sideband interference when storing or retrieving data in a disk drive system adapted for downward compatibilty
KR100195182B1 (en) * 1995-11-08 1999-06-15 윤종용 Hard disk driver of a servo-field and driving method

Also Published As

Publication number Publication date
WO1999006992A1 (en) 1999-02-11
WO1999006992A9 (en) 1999-08-05

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