DE69316682D1 - Taktgeneratoren für magnetische Diskettenlaufwerke - Google Patents

Taktgeneratoren für magnetische Diskettenlaufwerke

Info

Publication number
DE69316682D1
DE69316682D1 DE69316682T DE69316682T DE69316682D1 DE 69316682 D1 DE69316682 D1 DE 69316682D1 DE 69316682 T DE69316682 T DE 69316682T DE 69316682 T DE69316682 T DE 69316682T DE 69316682 D1 DE69316682 D1 DE 69316682D1
Authority
DE
Germany
Prior art keywords
magnetic disk
disk drives
clock generators
generators
clock
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
DE69316682T
Other languages
English (en)
Other versions
DE69316682T2 (de
Inventor
Kaneyasu Shimoda
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
Publication of DE69316682D1 publication Critical patent/DE69316682D1/de
Application granted granted Critical
Publication of DE69316682T2 publication Critical patent/DE69316682T2/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
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • 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
    • 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
DE69316682T 1992-09-01 1993-09-01 Taktgeneratoren für magnetische Diskettenlaufwerke Expired - Fee Related DE69316682T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4233686A JP2574106B2 (ja) 1992-09-01 1992-09-01 磁気ディスク装置のクロック再生回路

Publications (2)

Publication Number Publication Date
DE69316682D1 true DE69316682D1 (de) 1998-03-05
DE69316682T2 DE69316682T2 (de) 1998-05-14

Family

ID=16958955

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69316682T Expired - Fee Related DE69316682T2 (de) 1992-09-01 1993-09-01 Taktgeneratoren für magnetische Diskettenlaufwerke

Country Status (4)

Country Link
US (1) US5406427A (de)
EP (1) EP0586236B1 (de)
JP (1) JP2574106B2 (de)
DE (1) DE69316682T2 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3355690B2 (ja) * 1993-03-31 2002-12-09 ソニー株式会社 クロック再生装置
US6002538A (en) * 1994-03-18 1999-12-14 Fujitsu, Ltd. PRML regenerating apparatus having adjusted slice levels
EP0695089B1 (de) * 1994-07-19 2001-10-10 Canon Kabushiki Kaisha Bearbeitungsvorrichtung für digitales Signal
US5642243A (en) * 1994-09-27 1997-06-24 Cirrus Logic, Inc. Timing recovery frequency error detector for sampled amplitude magnetic recording
JPH08107352A (ja) * 1994-10-04 1996-04-23 Hitachi Ltd 位相同期システム
WO1996018192A1 (en) 1994-12-09 1996-06-13 Seagate Technology, Inc. Apparatus and method for controlling the frequency at which data is written in a disk drive system
US5796535A (en) * 1995-05-12 1998-08-18 Cirrus Logic, Inc. Sampled amplitude read channel employing a user data frequency synthesizer and a servo data frequency synthesizer
US5748593A (en) * 1995-06-02 1998-05-05 Nikon Corporation Data reproduction apparatus
JPH09213007A (ja) * 1996-02-05 1997-08-15 Nikon Corp データ再生装置
JP3823195B2 (ja) * 1996-10-08 2006-09-20 ソニー株式会社 クロック生成装置およびディスク駆動装置
JP2999759B1 (ja) * 1998-10-13 2000-01-17 松下電器産業株式会社 デジタル再生信号処理装置
JP3486119B2 (ja) * 1998-11-13 2004-01-13 松下電器産業株式会社 マルチレートクロック発生装置およびマルチレートディジタルデータ再生装置
JP4129856B2 (ja) * 1999-07-09 2008-08-06 タレス データ媒体及び記録媒体の記録／読取に有用なトラック追跡システム
JP4178680B2 (ja) * 1999-08-30 2008-11-12 ソニー株式会社 Ｐｌｌ回路及び位相誤差検出方法
DE19941445A1 (de) * 1999-08-30 2001-03-01 Thomson Brandt Gmbh Phasendetektor für eine Phasenregelschleife
US6646929B1 (en) * 2001-12-05 2003-11-11 Lsi Logic Corporation Methods and structure for read data synchronization with minimal latency
US7414933B2 (en) 2002-08-12 2008-08-19 Victor Company Of Japan, Ltd. Reproducing apparatus having an improved PLL circuit and related computer program
US7088534B2 (en) 2003-04-08 2006-08-08 Marvell International Ltd. Disk synchronous write
US7102403B2 (en) * 2005-02-03 2006-09-05 Mediatek Incorporation Clock recovering circuit utilizing a delay locked loop for generating an output clock locked to an analog input signal and related method thereof
JP2009523294A (ja) * 2005-03-16 2009-06-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 高密度ｂｄ−ｒｏｍディスク用のロック補助
JP2008077795A (ja) * 2006-09-22 2008-04-03 Fujitsu Ltd パターンドメディアのクロック抽出方法、パターンドメディアのクロック抽出回路及びパターンドメディア
JP2008084395A (ja) 2006-09-26 2008-04-10 Fujitsu Ltd パターンドメディアのクロック抽出方法及び回路
US7826813B2 (en) * 2006-12-22 2010-11-02 Orthosoft Inc. Method and system for determining a time delay between transmission and reception of an RF signal in a noisy RF environment using frequency detection
US7583153B1 (en) 2008-02-28 2009-09-01 Agere Systems Inc. Systems and methods for multiplexing multiphase clocks
US8508878B1 (en) 2010-01-21 2013-08-13 Marvell International Ltd. Write clock phase tracking for magnetic recording device
US8508879B1 (en) 2010-01-21 2013-08-13 Marvell International Ltd. Write clock rephase for magnetic recording device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660821A (en) * 1970-06-17 1972-05-02 Burroughs Corp Disc file agc circuit
US3883891A (en) * 1974-08-22 1975-05-13 Rca Corp Redundant signal processing error reduction technique
US4032762A (en) * 1975-10-07 1977-06-28 Rockwell International Corporation Adjustable digital filter for high speed digital transmission
US4231071A (en) * 1978-07-17 1980-10-28 Digital Equipment Corporation Reader for data recorded on magnetic disks at plural densities
US4894734A (en) * 1987-05-15 1990-01-16 Maxtor Corporation Method and apparatus for constant density recording
EP0316459B1 (de) * 1987-11-13 1992-04-22 International Business Machines Corporation Schnelle Takterfassung für Partial-Response-Signalisierung
US5036408A (en) * 1988-05-12 1991-07-30 Digital Equipment Corporation High efficiency disk format and synchronization system
JPH0648589B2 (ja) * 1989-02-16 1994-06-22 インターナショナル・ビジネス・マシーンズ・コーポレーション 情報記憶サブシステム用の非同期データ・チャネル
US4979189A (en) * 1989-08-18 1990-12-18 National Semiconductor Corporation Self-timing qualification channel
US5258933A (en) * 1992-08-27 1993-11-02 Quantum Corporation Timing control for PRML class IV sampling data detection channel
US5274509A (en) * 1992-09-10 1993-12-28 Digital Equipment Corporation On-the-fly splitting of disk data blocks using timed sampling of a data position indicator

Also Published As

Publication number Publication date
US5406427A (en) 1995-04-11
DE69316682T2 (de) 1998-05-14
EP0586236A3 (en) 1995-09-20
JP2574106B2 (ja) 1997-01-22
JPH0684289A (ja) 1994-03-25
EP0586236B1 (de) 1998-01-28
EP0586236A2 (de) 1994-03-09

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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