JP4031559B2 - 入力信号の自動利得制御のための自動利得制御回路 - Google Patents

入力信号の自動利得制御のための自動利得制御回路 Download PDF

Info

Publication number
JP4031559B2
JP4031559B2 JP25640297A JP25640297A JP4031559B2 JP 4031559 B2 JP4031559 B2 JP 4031559B2 JP 25640297 A JP25640297 A JP 25640297A JP 25640297 A JP25640297 A JP 25640297A JP 4031559 B2 JP4031559 B2 JP 4031559B2
Authority
JP
Japan
Prior art keywords
signal
gain control
region
gain
automatic gain
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
JP25640297A
Other languages
English (en)
Japanese (ja)
Other versions
JPH10112622A (ja
JPH10112622A5 (enExample
Inventor
ローバート・フィリップ・モーリング
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.)
HP Inc
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 JPH10112622A publication Critical patent/JPH10112622A/ja
Publication of JPH10112622A5 publication Critical patent/JPH10112622A5/ja
Application granted granted Critical
Publication of JP4031559B2 publication Critical patent/JP4031559B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
JP25640297A 1996-09-24 1997-09-22 入力信号の自動利得制御のための自動利得制御回路 Expired - Fee Related JP4031559B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96306941A EP0831480B1 (en) 1996-09-24 1996-09-24 Data processing apparatus and methods
GB96306941.4 1996-09-24

Publications (3)

Publication Number Publication Date
JPH10112622A JPH10112622A (ja) 1998-04-28
JPH10112622A5 JPH10112622A5 (enExample) 2005-06-02
JP4031559B2 true JP4031559B2 (ja) 2008-01-09

Family

ID=8225096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25640297A Expired - Fee Related JP4031559B2 (ja) 1996-09-24 1997-09-22 入力信号の自動利得制御のための自動利得制御回路

Country Status (4)

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

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10085214T1 (de) 1999-11-22 2002-10-31 Seagate Technology Llc Verfahren und Vorrichtung für Data-Error-Recovery mit Defekt-Schwellwertdetektor und Viterbi-Verstärkungsfaktor
DE60035178D1 (de) 2000-04-10 2007-07-26 Hewlett Packard Co Entzerrungspräambelbereich für das "digital data storage" (DDS) Format
US7359132B2 (en) 2000-04-10 2008-04-15 Hewlett-Packard Development Company, L.P. Equalization preamble region in 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
ATE309640T1 (de) 2002-06-07 2005-11-15 Cit Alcatel 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
US7684291B2 (en) 2006-06-05 2010-03-23 Mediatek Inc. Method and apparatus for blank detection of an optical disc
US7796480B2 (en) 2006-06-05 2010-09-14 Mediatek Inc. Apparatus and methods for light spot servo signal detection
US7724090B2 (en) 2006-06-05 2010-05-25 Mediatek Inc. Loop control apparatus and method thereof
TWI332752B (en) * 2006-06-05 2010-11-01 Mediatek Inc Method and apparatus for loop control
US7417500B2 (en) * 2006-06-19 2008-08-26 Tzero Technologies, Inc. Control of an adjustable gain amplifier
WO2008147506A1 (en) * 2007-05-22 2008-12-04 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
US11063793B1 (en) * 2020-05-18 2021-07-13 Texas Instruments Incorporated Serial receiver equalization circuit
US11153129B1 (en) * 2020-06-01 2021-10-19 International Business Machines Corporation Feedforward equalizer with programmable roaming taps
EP4216432A4 (en) * 2020-09-16 2024-03-27 Sony Semiconductor Solutions Corporation SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND RECEIVER

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
US3879674A (en) * 1973-12-27 1975-04-22 Burroughs Corp Automatic gain control circuit
EP0063935A1 (en) * 1981-04-24 1982-11-03 Iomega Corporation Method and apparatus for disk drive head positioning
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
EP0831480A1 (en) 1998-03-25
DE69620272D1 (de) 2002-05-02
DE69620272T2 (de) 2003-07-24
JPH10112622A (ja) 1998-04-28
EP0831480B1 (en) 2001-08-08
US6169638B1 (en) 2001-01-02

Similar Documents

Publication Publication Date Title
JP4031559B2 (ja) 入力信号の自動利得制御のための自動利得制御回路
JP4187811B2 (ja) サンプル・フィルタ装置
JP3967800B2 (ja) 信号処理装置
EP0784849B1 (en) Improved timing recovery for synchronous partial response recording
JP4183783B2 (ja) サンプル時間フィルタ装置
US6111710A (en) Asynchronous/synchronous gain control for interpolated timing recovery in a sampled amplitude read channel
US5552942A (en) Zero phase start optimization using mean squared error in a PRML recording channel
US6023386A (en) Fault tolerant sync mark detector for synchronizing a time varying sequence detector in a sampled amplitude read channel
US5585975A (en) Equalization for sample value estimation and sequence detection in a sampled amplitude read channel
EP0793843B1 (en) Improved fault tolerant sync mark detector for sampled amplitude magnetic recording
US6246723B1 (en) Sampled amplitude read channel employing early-decisions from a trellis sequence detector for sampling value estimation
US5572558A (en) PID loop filter for timing recovery in a sampled amplitude read channel
US6646822B1 (en) Sampled amplitude read channel employing pipelined reads to reduce the gap between sectors
US5583706A (en) Decimation DC offset control in a sampled amplitude read channel
US5729396A (en) Fault tolerant sync mark detector enabled relative to a frequency of an acquisition preamble for sampled amplitude recording
WO1996010254A9 (en) Improved timing recovery for synchronous partial response recording
JPH06162680A (ja) クロック再生装置及びｒｌｌチャネルクロック再生方法
US5838738A (en) Coding to improve timing recovery in a sampled amplitude read channel
US6853509B2 (en) Acquisition signal error estimator
JP3225588B2 (ja) ディジタル信号再生回路
KR100272349B1 (ko) 신호 채널의 샘플값 처리회로 및 방법
JPH0528655A (ja) データ再生装置

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040810

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040810

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070314

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070320

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070607

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20071009

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071019

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101026

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees