DE69620272T2 - Datenverabeitungsgerät und -verfahren - Google Patents

Datenverabeitungsgerät und -verfahren

Info

Publication number
DE69620272T2
DE69620272T2 DE69620272T DE69620272T DE69620272T2 DE 69620272 T2 DE69620272 T2 DE 69620272T2 DE 69620272 T DE69620272 T DE 69620272T DE 69620272 T DE69620272 T DE 69620272T DE 69620272 T2 DE69620272 T2 DE 69620272T2
Authority
DE
Germany
Prior art keywords
output
amplifier
gain
signal
gain control
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
DE69620272T
Other languages
English (en)
Other versions
DE69620272D1 (de
Inventor
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
Publication of DE69620272D1 publication Critical patent/DE69620272D1/de
Application granted granted Critical
Publication of DE69620272T2 publication Critical patent/DE69620272T2/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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • 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
    • G11B2020/1087—Digital recording or reproducing wherein a selection is made among at least two alternative ways of processing
    • G11B2020/10888—Digital recording or reproducing wherein a selection is made among at least two alternative ways of processing the kind of data being the selection criterion
    • 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
DE69620272T 1996-09-24 1996-09-24 Datenverabeitungsgerät und -verfahren Expired - Lifetime DE69620272T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96306941A EP0831480B1 (de) 1996-09-24 1996-09-24 Datenverabeitungsgerät und -verfahren

Publications (2)

Publication Number Publication Date
DE69620272D1 DE69620272D1 (de) 2002-05-02
DE69620272T2 true DE69620272T2 (de) 2003-07-24

Family

ID=8225096

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69620272T Expired - Lifetime DE69620272T2 (de) 1996-09-24 1996-09-24 Datenverabeitungsgerät und -verfahren

Country Status (4)

Country Link
US (1) US6169638B1 (de)
EP (1) EP0831480B1 (de)
JP (1) JP4031559B2 (de)
DE (1) DE69620272T2 (de)

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US5976819A (en) * 1995-11-21 1999-11-02 National Jewish Medical And Research Center Product and process to regulate actin polymerization in T lymphocytes
CA2239675C (en) * 1998-06-04 2007-11-13 Tet Hin Yeap Suppression of rfi and impulse noise in communications channels
US6493657B1 (en) * 1999-08-20 2002-12-10 Glp Partnership Amplitude range matching system
WO2001039188A2 (en) * 1999-11-22 2001-05-31 Seagate Technology Llc Method and apparatus for data error recovery using defect threshold detector and viterbi gain
US7359132B2 (en) 2000-04-10 2008-04-15 Hewlett-Packard Development Company, L.P. Equalization preamble region in digital data storage (DDS) format
DE60035178D1 (de) 2000-04-10 2007-07-26 Hewlett Packard Co Entzerrungspräambelbereich für das "digital data storage" (DDS) Format
TW481111U (en) * 2001-03-30 2002-03-21 Alex Machine Ind Co Ltd Wheel set for bicycle
US6766153B2 (en) 2001-04-02 2004-07-20 Itran Communications Ltd. Dynamic automatic gain control circuit employing kalman filtering
DE10124177A1 (de) 2001-05-17 2002-11-28 Infineon Technologies Ag Verfahren zur Rekonstruktion von mit einer Symbolrate getakteten Daten aus einem analogen, verzerrten Signal
US20030120484A1 (en) * 2001-06-12 2003-06-26 David Wong Method and system for generating colored comfort noise in the absence of silence insertion description packets
US6549079B1 (en) 2001-11-09 2003-04-15 Analog Devices, Inc. Feedback systems for enhanced oscillator switching time
DE50204866D1 (de) 2002-06-07 2005-12-15 Alcatel Sa LVSD-Treiber in bipolarer und MOS-Technologie
US6831510B2 (en) * 2003-02-06 2004-12-14 Fujitsu Limited Continuous low-frequency error cancellation in a high-speed differential amplifier
US8223827B2 (en) 2004-05-05 2012-07-17 Agere Systems Inc. Method and apparatus for generating filter tap weights and biases for signal dependent branch metric computation
GB2423218A (en) * 2005-02-03 2006-08-16 Hewlett Packard Development Co Data storage system read/write channel optimiser which compares measured metrics of read channel with desired nominal and adjusts channel in response
US7030795B1 (en) * 2005-05-17 2006-04-18 Motorola, Inc. Digital automatic gain control method and device
US7693674B2 (en) * 2005-05-20 2010-04-06 Omniphase Research Laboratories, Inc. Low-noise source
US7295073B2 (en) * 2006-01-19 2007-11-13 Mediatek Inc. Automatic gain control apparatus
JPWO2007111035A1 (ja) * 2006-03-24 2009-08-06 日本電気株式会社 データ受信装置及び該データ受信装置を備える半導体集積回路
US7724090B2 (en) 2006-06-05 2010-05-25 Mediatek Inc. Loop control apparatus and method thereof
US7796480B2 (en) 2006-06-05 2010-09-14 Mediatek Inc. Apparatus and methods for light spot servo signal detection
TWI332752B (en) * 2006-06-05 2010-11-01 Mediatek Inc Method and apparatus for loop control
US7684291B2 (en) 2006-06-05 2010-03-23 Mediatek Inc. Method and apparatus for blank detection of an optical disc
US7417500B2 (en) * 2006-06-19 2008-08-26 Tzero Technologies, Inc. Control of an adjustable gain amplifier
US8073387B2 (en) * 2007-05-22 2011-12-06 Powerwave Technologies, Inc. On frequency repeater with AGC stability determination
US7872824B1 (en) 2007-06-11 2011-01-18 Western Digital (Fremont), Llc Setting an operating bias current for a magnetoresistive head by computing a target operating voltage
KR100968807B1 (ko) * 2007-11-26 2010-07-08 한국전자통신연구원 가변이득증폭기 및 이를 포함하는 수신기
US7760458B1 (en) * 2008-08-12 2010-07-20 Western Digital Technologies, Inc. Disk drive adjusting head bias during servo synchronization to compensate for over/under sensitivity
JP2010108560A (ja) * 2008-10-31 2010-05-13 Toshiba Storage Device Corp 信号増幅装置、記憶装置
KR101544859B1 (ko) * 2009-03-23 2015-08-17 삼성전자주식회사 자동 이득 제어기 및 이를 포함하는 통신 단말기
JP2010251885A (ja) * 2009-04-13 2010-11-04 Panasonic Corp Ａｇｃ回路
CN108063601B (zh) * 2017-12-29 2021-08-27 上海艾为电子技术股份有限公司 一种自动增益控制电路及信号处理系统
KR20210133799A (ko) * 2020-04-29 2021-11-08 삼성전자주식회사 클럭 및 데이터 복구 장치를 포함하는 데이터 송수신 시스템 및 이의 동작방법
US11153129B1 (en) * 2020-06-01 2021-10-19 International Business Machines Corporation Feedforward equalizer with programmable roaming taps

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US3879674A (en) * 1973-12-27 1975-04-22 Burroughs Corp Automatic gain control circuit
EP0063935A1 (de) * 1981-04-24 1982-11-03 Iomega Corporation Verfahren und Anordnung zur Kopfpositionierung bei einem Plattenantrieb
FR2576472B1 (fr) * 1985-01-22 1988-02-12 Alcatel Thomson Faisceaux Procede et dispositif de commande automatique de gain d'un recepteur en acces multiple a repartition temporelle
JPH0691481B2 (ja) * 1987-08-18 1994-11-14 日本電気株式会社 Ａｇｃ回路
US4849711A (en) * 1987-09-04 1989-07-18 Digital Equipment Corporation Automatic gain control system
US4870370A (en) * 1988-02-19 1989-09-26 Silicon Systems, Inc. Method and apparatus for two stage automatic gain control
JP2672699B2 (ja) * 1990-08-28 1997-11-05 株式会社東芝 磁気ディスク装置におけるａｇｃ制御装置
US5463603A (en) * 1992-03-18 1995-10-31 Imp, Inc. Computer disk drive integrated data path circuit optimized for handling both data and servo signals
JPH06244660A (ja) * 1993-02-19 1994-09-02 Toshiba Corp 自動利得制御回路
US5467231A (en) * 1993-02-26 1995-11-14 Hewlett-Packard Company Using recorded data for auto calibration of fixed gain of a read amplifier in a data storage device

Also Published As

Publication number Publication date
JP4031559B2 (ja) 2008-01-09
US6169638B1 (en) 2001-01-02
DE69620272D1 (de) 2002-05-02
EP0831480B1 (de) 2001-08-08
JPH10112622A (ja) 1998-04-28
EP0831480A1 (de) 1998-03-25

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Legal Events

Date Code Title Description
8370 Indication related to discontinuation of the patent is to be deleted
8332 No legal effect for de
8370 Indication related to discontinuation of the patent is to be deleted
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: ZEITLER, VOLPERT, KANDLBINDER, 80539 MUENCHEN

8327 Change in the person/name/address of the patent owner

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