DE69221558D1 - System zur Datenaufzeichnung auf einem Speichermedium - Google Patents

System zur Datenaufzeichnung auf einem Speichermedium

Info

Publication number
DE69221558D1
DE69221558D1 DE69221558T DE69221558T DE69221558D1 DE 69221558 D1 DE69221558 D1 DE 69221558D1 DE 69221558 T DE69221558 T DE 69221558T DE 69221558 T DE69221558 T DE 69221558T DE 69221558 D1 DE69221558 D1 DE 69221558D1
Authority
DE
Germany
Prior art keywords
storage medium
data recording
recording
data
medium
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
DE69221558T
Other languages
English (en)
Other versions
DE69221558T2 (de
Inventor
Rodney Alden Lincoln Mattison
David Elliott Norton
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69221558D1 publication Critical patent/DE69221558D1/de
Publication of DE69221558T2 publication Critical patent/DE69221558T2/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
    • G11B20/18—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
    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
DE69221558T 1991-06-14 1992-05-20 System zur Datenaufzeichnung auf einem Speichermedium Expired - Fee Related DE69221558T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/715,616 US5325241A (en) 1991-06-14 1991-06-14 Write precompensation with frequency synthesizer

Publications (2)

Publication Number Publication Date
DE69221558D1 true DE69221558D1 (de) 1997-09-18
DE69221558T2 DE69221558T2 (de) 1997-12-18

Family

ID=24874785

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69221558T Expired - Fee Related DE69221558T2 (de) 1991-06-14 1992-05-20 System zur Datenaufzeichnung auf einem Speichermedium

Country Status (5)

Country Link
US (1) US5325241A (de)
EP (1) EP0523348B1 (de)
JP (1) JP2567546B2 (de)
KR (1) KR960005121B1 (de)
DE (1) DE69221558T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570243A (en) * 1993-06-22 1996-10-29 Fujitsu Limited Variable delay circuit including current mirror and ramp generator circuits for use in the read channel of a data storage device
US5543975A (en) * 1993-11-12 1996-08-06 Hewlett-Packard Company Removal of precompensation in a write data signal from a flexible disk controller
TW369648B (en) * 1996-09-02 1999-09-11 Koninkl Philips Electronics Nv Device for write compensation in magnetic media recording
US6288859B1 (en) * 1997-08-12 2001-09-11 U.S. Philips Corporation Device for write compensation in magnetic-media recording
HU224088B1 (hu) * 1998-02-26 2005-05-30 Koninklijke Philips Electronics N V. Eszköz mágneses adathordozón rögzített adatjelek bitsűrűség-változtatására
EP0993122B1 (de) * 1998-10-06 2005-05-11 STMicroelectronics S.r.l. Verfahren zur Reduzierung der Einschwingzeit von PLL Schaltungen
US6288858B1 (en) 1999-06-09 2001-09-11 International Business Machines Corporation Method for improving magnetic recording at high data rates for waveforms having a burst of transitions
US6281712B1 (en) * 2000-09-05 2001-08-28 Motorola, Inc. Phase detector with frequency steering

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173027A (en) * 1977-12-20 1979-10-30 Honeywell Information Systems Inc. Write precompensation system
US4334250A (en) * 1978-03-16 1982-06-08 Tektronix, Inc. MFM data encoder with write precompensation
US4245263A (en) * 1979-05-14 1981-01-13 Honeywell Information Systems Inc. Write precompensation and write encoding for FM and MFM recording
US4481549A (en) * 1979-09-12 1984-11-06 Tektronix, Inc. MFM data encoder with write precompensation
US4319200A (en) * 1980-02-04 1982-03-09 Cromemco Inc. Multi-passband differentially controlled data rate synchronizer
US4691254A (en) * 1985-06-24 1987-09-01 Priam Corporation Data processing system including encoder, decoder and write precompensator, using run length limited code
US4922141A (en) * 1986-10-07 1990-05-01 Western Digital Corporation Phase-locked loop delay line
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
US4878028A (en) * 1987-02-12 1989-10-31 Advanced Micro Devices, Inc. Technique for generating precompensation delay for writing data to disks
US4851932A (en) * 1988-01-29 1989-07-25 Storage Technology Corporation Adaptive compensation circuit for moving data storage media
US5187615A (en) * 1988-03-30 1993-02-16 Hitachi, Ltd. Data separator and signal processing circuit

Also Published As

Publication number Publication date
KR930001191A (ko) 1993-01-16
KR960005121B1 (ko) 1996-04-20
JP2567546B2 (ja) 1996-12-25
DE69221558T2 (de) 1997-12-18
US5325241A (en) 1994-06-28
EP0523348B1 (de) 1997-08-13
EP0523348A1 (de) 1993-01-20
JPH05174314A (ja) 1993-07-13

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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