DE69524525T2 - Optimierung der Schreibprekompensation bei einem PRML-Kanal - Google Patents

Optimierung der Schreibprekompensation bei einem PRML-Kanal

Info

Publication number
DE69524525T2
DE69524525T2 DE69524525T DE69524525T DE69524525T2 DE 69524525 T2 DE69524525 T2 DE 69524525T2 DE 69524525 T DE69524525 T DE 69524525T DE 69524525 T DE69524525 T DE 69524525T DE 69524525 T2 DE69524525 T2 DE 69524525T2
Authority
DE
Germany
Prior art keywords
optimization
compensation
write pre
prml channel
prml
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 - Fee Related
Application number
DE69524525T
Other languages
English (en)
Other versions
DE69524525D1 (de
Inventor
Pablo A Ziperovich
Xiaodong Che
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.)
Quantum Corp
Original Assignee
Quantum 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
Application filed by Quantum Corp filed Critical Quantum Corp
Publication of DE69524525D1 publication Critical patent/DE69524525D1/de
Application granted granted Critical
Publication of DE69524525T2 publication Critical patent/DE69524525T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10194—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using predistortion during writing
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
    • 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
    • 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
    • G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
DE69524525T 1994-10-04 1995-09-05 Optimierung der Schreibprekompensation bei einem PRML-Kanal Expired - Fee Related DE69524525T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/317,902 US5493454A (en) 1994-10-04 1994-10-04 Write precompensation optimization in a PRML channel using a selected PRML signal level

Publications (2)

Publication Number Publication Date
DE69524525D1 DE69524525D1 (de) 2002-01-24
DE69524525T2 true DE69524525T2 (de) 2002-05-23

Family

ID=23235752

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69524525T Expired - Fee Related DE69524525T2 (de) 1994-10-04 1995-09-05 Optimierung der Schreibprekompensation bei einem PRML-Kanal

Country Status (5)

Country Link
US (2) US5493454A (de)
EP (1) EP0706173B1 (de)
JP (1) JPH08115503A (de)
KR (1) KR960015387A (de)
DE (1) DE69524525T2 (de)

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US7248424B2 (en) * 2003-04-25 2007-07-24 Fujitsu Limited Nonlinearity measuring method, nonlinearity measuring unit, magnetic recording/regenerating unit and LSI for magnetic recording/regenerating
US7405894B2 (en) * 2004-07-08 2008-07-29 Broadcom Corporation Frequency, phase, and gain estimation technique for use in a read channel receiver of a hard disk drive
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Also Published As

Publication number Publication date
EP0706173B1 (de) 2001-12-12
EP0706173A1 (de) 1996-04-10
US5493454A (en) 1996-02-20
JPH08115503A (ja) 1996-05-07
US5583705A (en) 1996-12-10
KR960015387A (ko) 1996-05-22
DE69524525D1 (de) 2002-01-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee