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DE69630784D1 - Datenverarbeitungsgerät und -verfahren - Google Patents

Datenverarbeitungsgerät und -verfahren

Info

Publication number
DE69630784D1
DE69630784D1 DE69630784T DE69630784T DE69630784D1 DE 69630784 D1 DE69630784 D1 DE 69630784D1 DE 69630784 T DE69630784 T DE 69630784T DE 69630784 T DE69630784 T DE 69630784T DE 69630784 D1 DE69630784 D1 DE 69630784D1
Authority
DE
Germany
Prior art keywords
data processing
processing equipment
equipment
data
processing
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 - Lifetime
Application number
DE69630784T
Other languages
English (en)
Other versions
DE69630784T2 (de
Inventor
Christopher Huw Williams
Andrew David Brown
Robert Philip Morling
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of DE69630784D1 publication Critical patent/DE69630784D1/de
Publication of DE69630784T2 publication Critical patent/DE69630784T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/087—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing recorded 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
    • G11B20/10009—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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
    • 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
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
DE69630784T 1996-09-24 1996-09-24 Datenverarbeitungsgerät und -verfahren Expired - Lifetime DE69630784T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96306938A EP0831478B1 (de) 1996-09-24 1996-09-24 Datenverarbeitungsgerät und -verfahren

Publications (2)

Publication Number Publication Date
DE69630784D1 true DE69630784D1 (de) 2003-12-24
DE69630784T2 DE69630784T2 (de) 2004-09-30

Family

ID=8225093

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69630784T Expired - Lifetime DE69630784T2 (de) 1996-09-24 1996-09-24 Datenverarbeitungsgerät und -verfahren

Country Status (4)

Country Link
US (1) US6078614A (de)
EP (1) EP0831478B1 (de)
JP (1) JP4187811B2 (de)
DE (1) DE69630784T2 (de)

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JP4130997B2 (ja) * 1996-09-02 2008-08-13 エステー マイクロエレクトロニクス ナームローゼ ベンノートシャップ 多重搬送波伝送システムの改良
EP0831479B1 (de) * 1996-09-24 2001-12-05 Hewlett-Packard Company, A Delaware Corporation Datenverarbeitungsgerät und -verfahren
US6563868B1 (en) * 1998-07-17 2003-05-13 General Instruments Corporation Method and apparatus for adaptive equalization in the presence of large multipath echoes
US6483872B2 (en) * 1998-08-25 2002-11-19 Stmicroelectronics, Inc. Method and apparatus for reducing convergence time
US6222879B1 (en) * 1998-08-31 2001-04-24 International Business Machines Corporation Self contained equalization method and apparatus
JP3514638B2 (ja) * 1998-09-28 2004-03-31 株式会社日立製作所 環境変動耐力の高い磁気ディスク装置
US6216148B1 (en) * 1998-11-12 2001-04-10 Quantum Corporation Adaptive analog equalizer for partial response channels
US6304400B1 (en) * 1999-03-08 2001-10-16 Storage Technology Corporation Signal dropout compensation
JP4077993B2 (ja) 1999-07-30 2008-04-23 株式会社日立グローバルストレージテクノロジーズ 性能評価方法及び性能評価装置並びにこれらを用いた記録再生装置
US6532259B1 (en) * 1999-09-28 2003-03-11 International Business Machines Corporation Equalization method and apparatus with gain adjustment for direct access storage device (DASD) data channels
JP3560138B2 (ja) * 1999-12-06 2004-09-02 松下電器産業株式会社 波形等化器とこれを用いた移動局無線装置、基地局無線装置及び移動通信システム
US6628707B2 (en) * 2001-05-04 2003-09-30 Radiant Networks Plc Adaptive equalizer system for short burst modems and link hopping radio networks
US7190742B2 (en) * 2003-06-19 2007-03-13 Applied Micro Circuits Corporation Differential receiver circuit with electronic dispersion compensation
JP2005135563A (ja) * 2003-10-31 2005-05-26 Sanyo Electric Co Ltd 適応等化器
US7271971B2 (en) * 2004-12-03 2007-09-18 International Business Machines Corporation Dynamically adapting a magnetic tape read channel equalizer
DE102005041052B3 (de) 2005-08-30 2007-03-29 Infineon Technologies Ag Verfahren zur Stabilitätskontrolle einer selbstschwingenden Treiberschaltung und selbstschwingende Treiberschaltung
US7894788B2 (en) * 2006-05-19 2011-02-22 California Institute Of Technology Digital and analog IM3 product compensation circuits for an RF receiver
US8380774B2 (en) * 2007-07-09 2013-02-19 Tandberg Storage Asa Coefficient memory for least mean square finite impulse response filter
US8615539B2 (en) * 2007-07-09 2013-12-24 Tandberg Storage Asa Coefficient control for filter in magnetic media read channel
US8149977B2 (en) 2009-01-28 2012-04-03 Hewlett-Packard Development Company, L.P. Recovering data samples
US8422609B2 (en) * 2009-09-30 2013-04-16 Lsi Corporation Automatic filter-reset mechanism
US8914524B1 (en) 2011-03-16 2014-12-16 Amazon Technologies, Inc. Load time adapted network page(s)
US9537492B2 (en) 2014-06-20 2017-01-03 Analog Devices, Inc. Sampled analog loop filter for phase locked loops
US9768800B1 (en) * 2016-09-13 2017-09-19 Analog Devices, Inc. Envelope dependent output stage scalability
DE112017006784B4 (de) * 2017-03-01 2020-09-10 Mitsubishi Electric Corporation Digitalsignalverarbeitungsvorrichtung und Audiovorrichtung
CN110274615B (zh) * 2019-08-08 2024-05-10 成都芯进电子有限公司 一种磁角度编码器中提高增量编码abz输出精度的电路及方法
US11153129B1 (en) * 2020-06-01 2021-10-19 International Business Machines Corporation Feedforward equalizer with programmable roaming taps

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US4009356A (en) * 1974-01-31 1977-02-22 Milgo Electronic Corporation Data modems having data drop-out and data echo protection
FI832580A (fi) * 1982-07-19 1984-01-20 British Telecomm Digitalt transmissionssystem
DE3462741D1 (en) * 1983-03-11 1987-04-23 Cit Alcatel Clock recovery circuit for a synchronous data transmission utilizing a combination of the biphase l code, and the modified biphase code
IT1212993B (it) * 1983-08-11 1989-12-07 Sip Equalizzatore adattivo per segnali numerici soggetti a distorsioni variabili nel tempo
US4591669A (en) * 1984-09-26 1986-05-27 At&T Bell Laboratories Adaptive filter update gain normalization
JPH02237307A (ja) * 1989-03-10 1990-09-19 Matsushita Electric Ind Co Ltd 適応型波形等化器
US5274512A (en) * 1989-03-13 1993-12-28 Sony Corporation Coefficient control system for digital equalizer using orthogonal oscillation
FR2650137B1 (de) * 1989-07-18 1994-10-28 France Etat
CA2026558C (en) * 1989-09-28 1994-07-05 Kensaku Fujii Adaptive digital filter including low-pass filter
US5132988A (en) * 1990-12-03 1992-07-21 Board Of Trustees, Leland Stanford Jr. University Adaptive decision feedback equalizer apparatus for processing information stored on digital storage media
FR2677701B1 (fr) * 1991-06-11 1993-09-03 Inst Francais Du Petrole Methode pour poursuivre des mesures apres la recuperation d'un outil de mesure immobilise dans un puits.
JP3013535B2 (ja) * 1991-08-03 2000-02-28 ソニー株式会社 磁気再生装置
EP0527017B1 (de) * 1991-08-03 1997-03-26 Sony Corporation Magnetisches Wiedergabegerät
JP3127530B2 (ja) * 1991-10-29 2001-01-29 ソニー株式会社 回転ヘッド装置
JPH05122647A (ja) * 1991-10-30 1993-05-18 Sony Corp デイジタルビデオテープレコーダ
JP3176474B2 (ja) * 1992-06-03 2001-06-18 沖電気工業株式会社 適応ノイズキャンセラ装置
US5410595A (en) * 1992-11-12 1995-04-25 Motorola, Inc. Apparatus and method for noise reduction for a full-duplex speakerphone or the like
JP2508616B2 (ja) * 1992-12-21 1996-06-19 日本プレシジョン・サーキッツ株式会社 サンプリングレ―トコンバ―タ
KR960011739B1 (ko) * 1994-01-18 1996-08-30 대우전자 주식회사 실시간 계수 갱신값 추출장치를 구비한 등화기
JP3202125B2 (ja) * 1994-03-10 2001-08-27 沖電気工業株式会社 符号分割多元接続システム

Also Published As

Publication number Publication date
JP4187811B2 (ja) 2008-11-26
JPH10112131A (ja) 1998-04-28
US6078614A (en) 2000-06-20
DE69630784T2 (de) 2004-09-30
EP0831478A1 (de) 1998-03-25
EP0831478B1 (de) 2003-11-19

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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: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE