DE69326664T2 - Plattenlaufwerk mit Erfassung von "PRML class IV"-kodierten Daten und digitaler selbstanpassender Entzerrung - Google Patents

Plattenlaufwerk mit Erfassung von "PRML class IV"-kodierten Daten und digitaler selbstanpassender Entzerrung

Info

Publication number
DE69326664T2
DE69326664T2 DE1993626664 DE69326664T DE69326664T2 DE 69326664 T2 DE69326664 T2 DE 69326664T2 DE 1993626664 DE1993626664 DE 1993626664 DE 69326664 T DE69326664 T DE 69326664T DE 69326664 T2 DE69326664 T2 DE 69326664T2
Authority
DE
Germany
Prior art keywords
acquisition
disk drive
encoded data
digital self
adjusting equalization
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
DE1993626664
Other languages
English (en)
Other versions
DE69326664D1 (de
Inventor
William L Abbott
Kenneth E Johnson
Hung C Nguyen
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
Priority claimed from US07/937,064 external-priority patent/US5341249A/en
Priority claimed from US07/936,761 external-priority patent/US5381359A/en
Priority claimed from US07/936,742 external-priority patent/US5375145A/en
Priority claimed from US07/936,759 external-priority patent/US5341387A/en
Priority claimed from US07/937,352 external-priority patent/US5321559A/en
Priority claimed from US07/936,756 external-priority patent/US5258933A/en
Application filed by Quantum Corp filed Critical Quantum Corp
Publication of DE69326664D1 publication Critical patent/DE69326664D1/de
Application granted granted Critical
Publication of DE69326664T2 publication Critical patent/DE69326664T2/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
    • G11B20/10055—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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes
    • H04L25/4908—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes using mBnB codes
    • 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
    • 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
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1281—Servo information
    • G11B2020/1282—Servo information in embedded servo fields
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
DE1993626664 1992-08-27 1993-08-24 Plattenlaufwerk mit Erfassung von "PRML class IV"-kodierten Daten und digitaler selbstanpassender Entzerrung Expired - Fee Related DE69326664T2 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US07/937,064 US5341249A (en) 1992-08-27 1992-08-27 Disk drive using PRML class IV sampling data detection with digital adaptive equalization
US07/936,761 US5381359A (en) 1992-08-27 1992-08-27 Adaptation and training of digital finite impulse response filter within PRML sampling data detection channel
US07/936,742 US5375145A (en) 1992-08-27 1992-08-27 Multi-mode gain control loop for PRML class IV sampling data detection channel
US07/936,759 US5341387A (en) 1992-08-27 1992-08-27 Viterbi detector having adjustable detection thresholds for PRML class IV sampling data detection
US07/937,352 US5321559A (en) 1992-08-27 1992-08-27 Asynchronous peak detection of information embedded within PRML class IV sampling data detection channel
US07/936,756 US5258933A (en) 1992-08-27 1992-08-27 Timing control for PRML class IV sampling data detection channel

Publications (2)

Publication Number Publication Date
DE69326664D1 DE69326664D1 (de) 1999-11-11
DE69326664T2 true DE69326664T2 (de) 2000-05-25

Family

ID=27560348

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1993626664 Expired - Fee Related DE69326664T2 (de) 1992-08-27 1993-08-24 Plattenlaufwerk mit Erfassung von "PRML class IV"-kodierten Daten und digitaler selbstanpassender Entzerrung

Country Status (3)

Country Link
EP (1) EP0595454B1 (de)
DE (1) DE69326664T2 (de)
SG (1) SG46216A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031193B4 (de) * 2007-07-09 2012-12-06 Tandberg Data Holdings S.A.R.L. Koeffizientensteuerung für einen Filter im Lesekanal eines magnetischen Mediums
DE102008031192B4 (de) * 2007-07-09 2013-07-18 Tandberg Data Holdings S.A.R.L. Leseschaltung für eine Magnetaufzeichnungsvorrichtung und ein entsprechendes Verfahren

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0684605B1 (de) * 1994-05-23 1999-10-06 STMicroelectronics S.r.l. In Parallelarchitektur ausgeführte PRML Vorrichtung zur Verarbeitung von Signalen während eines Leseschrittes durch einen Magnetkopf
DE69421072T2 (de) * 1994-05-23 2000-04-20 St Microelectronics Srl Vorrichtung zur Verarbeitung von Servosignalen in einer in Parallelarchitektur ausgeführten Lesevorrichtung für Festplatten
SG55370A1 (en) * 1996-09-09 1998-12-21 Texas Instruments Inc Servo demodulator and method for synchronous servo demodulation
EP0831479B1 (de) * 1996-09-24 2001-12-05 Hewlett-Packard Company, A Delaware Corporation Datenverarbeitungsgerät und -verfahren
JP3428376B2 (ja) 1997-05-26 2003-07-22 日本ビクター株式会社 自動等化システム
US6111710A (en) * 1997-06-25 2000-08-29 Cirrus Logic, Inc. Asynchronous/synchronous gain control for interpolated timing recovery in a sampled amplitude read channel
US6563889B1 (en) * 1998-10-01 2003-05-13 Lsi Logic Corporation Method and apparatus for adapting the boost of a read channel filter
US6690635B2 (en) 2000-07-18 2004-02-10 Victor Company Of Japan, Ltd. Reproducing apparatus
US8817402B2 (en) 2012-12-19 2014-08-26 Lsi Corporation Tag multiplication via a preamplifier interface
US10637489B1 (en) * 2019-06-05 2020-04-28 Infineon Technologies Ag Detecting signal disturbance using asynchronous counter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363551B1 (de) * 1988-10-17 1994-12-07 International Business Machines Corporation Adaptiver Entzerrer für Aufzeichnungssysteme unter Verwendung von Partial-Response-Signalisierung
EP0438993B1 (de) * 1990-01-25 1997-03-05 International Business Machines Corporation Dekodierungsverfahren mit hoher Datenrate für die Signalverarbeitung in kodierten Kanälen
JP2830352B2 (ja) * 1990-04-11 1998-12-02 ソニー株式会社 デジタルデータ検出装置
US5233482A (en) * 1991-07-31 1993-08-03 International Business Machines Corporation Thermal asperity compensation for PRML data detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031193B4 (de) * 2007-07-09 2012-12-06 Tandberg Data Holdings S.A.R.L. Koeffizientensteuerung für einen Filter im Lesekanal eines magnetischen Mediums
DE102008031192B4 (de) * 2007-07-09 2013-07-18 Tandberg Data Holdings S.A.R.L. Leseschaltung für eine Magnetaufzeichnungsvorrichtung und ein entsprechendes Verfahren

Also Published As

Publication number Publication date
DE69326664D1 (de) 1999-11-11
SG46216A1 (en) 1998-02-20
EP0595454B1 (de) 1999-10-06
EP0595454A3 (en) 1994-06-15
EP0595454A2 (de) 1994-05-04

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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