DE69941040D1 - Vorrichtung und Verfahren zum Entwickeln eines dynamischen Servosignals aus Daten auf einem Magnetplattenlaufwerk - Google Patents

Vorrichtung und Verfahren zum Entwickeln eines dynamischen Servosignals aus Daten auf einem Magnetplattenlaufwerk

Info

Publication number
DE69941040D1
DE69941040D1 DE69941040T DE69941040T DE69941040D1 DE 69941040 D1 DE69941040 D1 DE 69941040D1 DE 69941040 T DE69941040 T DE 69941040T DE 69941040 T DE69941040 T DE 69941040T DE 69941040 D1 DE69941040 D1 DE 69941040D1
Authority
DE
Germany
Prior art keywords
data
developing
disk drive
magnetic disk
servo signal
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.)
Expired - Lifetime
Application number
DE69941040T
Other languages
English (en)
Inventor
Alvin Despain
Stockton R Gaines
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.)
Rateze Remote Mgmt LLC
Original Assignee
Purchased Patent Management LLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22690398&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69941040(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Purchased Patent Management LLC filed Critical Purchased Patent Management LLC
Application granted granted Critical
Publication of DE69941040D1 publication Critical patent/DE69941040D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B5/59633—Servo formatting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y15/00—Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • G11B20/10277—Improvement or modification of read or write signals bit detection or demodulation methods the demodulation process being specifically adapted to partial response channels, e.g. PRML decoding
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • 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
    • G11B5/59605—Circuits
    • 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
    • G11B5/59683—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 for magnetoresistive heads
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic 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
    • G11B5/48—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
    • G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
DE69941040T 1998-11-06 1999-11-04 Vorrichtung und Verfahren zum Entwickeln eines dynamischen Servosignals aus Daten auf einem Magnetplattenlaufwerk Expired - Lifetime DE69941040D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/187,770 US6381088B1 (en) 1998-11-06 1998-11-06 Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method

Publications (1)

Publication Number Publication Date
DE69941040D1 true DE69941040D1 (de) 2009-08-06

Family

ID=22690398

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69937366T Expired - Lifetime DE69937366T2 (de) 1998-11-06 1999-11-04 Gerät zur entwicklung eines dynamischen servosignals aus daten in einem magnetischen plattenlaufwerk und verfahren
DE69941040T Expired - Lifetime DE69941040D1 (de) 1998-11-06 1999-11-04 Vorrichtung und Verfahren zum Entwickeln eines dynamischen Servosignals aus Daten auf einem Magnetplattenlaufwerk

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69937366T Expired - Lifetime DE69937366T2 (de) 1998-11-06 1999-11-04 Gerät zur entwicklung eines dynamischen servosignals aus daten in einem magnetischen plattenlaufwerk und verfahren

Country Status (8)

Country Link
US (2) US6381088B1 (de)
EP (2) EP1127352B1 (de)
JP (1) JP3835986B2 (de)
KR (1) KR100528250B1 (de)
AT (2) ATE434820T1 (de)
DE (2) DE69937366T2 (de)
MY (1) MY125040A (de)
WO (1) WO2000028540A1 (de)

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US6545836B1 (en) * 1999-11-12 2003-04-08 Acorn Technologies, Inc. Servo control apparatus and method using absolute value input signals
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US8724249B2 (en) * 2011-12-20 2014-05-13 HGST Netherlands B.V. Disk drive with multiplexed read signal and fly-height signal for fly-height monitoring during writing
US9672853B1 (en) 2015-06-01 2017-06-06 Marvell International Ltd. Digital data driven position error signal for magnetic recording
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Also Published As

Publication number Publication date
ATE434820T1 (de) 2009-07-15
MY125040A (en) 2006-07-31
EP1127352B1 (de) 2007-10-17
ATE376244T1 (de) 2007-11-15
DE69937366D1 (de) 2007-11-29
JP2002529882A (ja) 2002-09-10
EP1127352A1 (de) 2001-08-29
JP3835986B2 (ja) 2006-10-18
EP1898411B1 (de) 2009-06-24
KR100528250B1 (ko) 2005-11-15
KR20010082289A (ko) 2001-08-29
DE69937366T2 (de) 2008-07-24
US20020054449A1 (en) 2002-05-09
US6525897B2 (en) 2003-02-25
US6381088B1 (en) 2002-04-30
WO2000028540A1 (en) 2000-05-18
EP1898411A1 (de) 2008-03-12

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