DE69131690D1 - Lese-entzerrung und -vorkompensierung - Google Patents

Lese-entzerrung und -vorkompensierung

Info

Publication number
DE69131690D1
DE69131690D1 DE69131690T DE69131690T DE69131690D1 DE 69131690 D1 DE69131690 D1 DE 69131690D1 DE 69131690 T DE69131690 T DE 69131690T DE 69131690 T DE69131690 T DE 69131690T DE 69131690 D1 DE69131690 D1 DE 69131690D1
Authority
DE
Germany
Prior art keywords
compensation
read distortion
distortion
read
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
DE69131690T
Other languages
English (en)
Other versions
DE69131690T2 (de
Inventor
Louis Shrinkle
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology 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
Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC
Application granted granted Critical
Publication of DE69131690D1 publication Critical patent/DE69131690D1/de
Publication of DE69131690T2 publication Critical patent/DE69131690T2/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
    • 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
    • G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
    • 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
    • G11B5/09—Digital recording
DE69131690T 1990-07-30 1991-06-24 Lese-entzerrung und -vorkompensierung Expired - Fee Related DE69131690T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55989990A 1990-07-30 1990-07-30
PCT/US1991/004515 WO1992002928A1 (en) 1990-07-30 1991-06-24 Precompensation and read equalization

Publications (2)

Publication Number Publication Date
DE69131690D1 true DE69131690D1 (de) 1999-11-11
DE69131690T2 DE69131690T2 (de) 2000-02-10

Family

ID=24235520

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69131690T Expired - Fee Related DE69131690T2 (de) 1990-07-30 1991-06-24 Lese-entzerrung und -vorkompensierung

Country Status (6)

Country Link
US (1) US5530600A (de)
EP (2) EP0740299A3 (de)
JP (1) JP3021649B2 (de)
KR (1) KR100245893B1 (de)
DE (1) DE69131690T2 (de)
WO (1) WO1992002928A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5424881A (en) 1993-02-01 1995-06-13 Cirrus Logic, Inc. Synchronous read channel
US6452736B1 (en) 1994-05-26 2002-09-17 Hitachi, Ltd. Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signal
US6055117A (en) * 1998-06-09 2000-04-25 Hewlett-Packard Company Systems and method having data encoded with edge placement equalization
US6640264B1 (en) * 1998-07-20 2003-10-28 Gary W Moore Incremental state logic methodology and apparatus for logic based program control
US6275092B1 (en) * 1999-11-16 2001-08-14 Texas Instruments Incorporated Active damping circuit
JP4011860B2 (ja) * 2001-03-23 2007-11-21 株式会社東芝 垂直磁気記録方式の磁気ディスク装置及び書き込み補償方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901737A (en) * 1955-11-01 1959-08-25 Sperry Rand Corp Disk recording compensating devices
US4244008A (en) * 1979-07-30 1981-01-06 Siemens Corporation Read back compensation circuit for a magnetic recording device
JPS58196610A (ja) * 1982-05-10 1983-11-16 Hitachi Ltd 磁気デイスク装置
US4635141A (en) * 1982-10-13 1987-01-06 United States Design Corporation Method and apparatus for storing data on magnetic or optical media
US4535371A (en) * 1983-05-16 1985-08-13 International Business Machines Corporation Recording channel with signal controlled integrated analog circuits
US4564869A (en) * 1983-11-21 1986-01-14 Eastman Kodak Company Zoned equalization for a magnetic disc
US4809088A (en) * 1986-12-05 1989-02-28 Western Digital Corporation Integrated system for implementation of read window margining and write precompensaton in disk drives
US5047876A (en) * 1989-03-03 1991-09-10 Seagate Technology Inc. Adaptive prewrite compensation apparatus
KR910013064A (ko) * 1989-12-11 1991-08-08 오오가 노리오 자기 디스크 기록 및 재생 장치

Also Published As

Publication number Publication date
JP3021649B2 (ja) 2000-03-15
DE69131690T2 (de) 2000-02-10
KR100245893B1 (ko) 2000-03-02
JPH05508958A (ja) 1993-12-09
EP0541580B1 (de) 1999-10-06
US5530600A (en) 1996-06-25
KR930701805A (ko) 1993-06-12
WO1992002928A1 (en) 1992-02-20
EP0740299A2 (de) 1996-10-30
EP0541580A4 (de) 1994-02-16
EP0740299A3 (de) 1997-07-23
EP0541580A1 (de) 1993-05-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US

8328 Change in the person/name/address of the agent

Free format text: HENKEL, FEILER & HAENZEL, 81675 MUENCHEN

8339 Ceased/non-payment of the annual fee