HUP0105213A2 - Hőmérséklet-kiegyenlítéssel rendelkező változtatható erősítésű erősítő lemezmeghajtó, rendszerben való alkalmazáshoz - Google Patents

Hőmérséklet-kiegyenlítéssel rendelkező változtatható erősítésű erősítő lemezmeghajtó, rendszerben való alkalmazáshoz

Info

Publication number
HUP0105213A2
HUP0105213A2 HU0105213A HUP0105213A HUP0105213A2 HU P0105213 A2 HUP0105213 A2 HU P0105213A2 HU 0105213 A HU0105213 A HU 0105213A HU P0105213 A HUP0105213 A HU P0105213A HU P0105213 A2 HUP0105213 A2 HU P0105213A2
Authority
HU
Hungary
Prior art keywords
signal
amplifier
equalization
estimated
output
Prior art date
Application number
HU0105213A
Other languages
English (en)
Inventor
Anthony Richard Bonaccio
Rick Allen Philpott
Peter John Windler
Gregory Scott Winn
Original Assignee
International Business Machines 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
Application filed by International Business Machines Corp. filed Critical International Business Machines Corp.
Publication of HUP0105213A2 publication Critical patent/HUP0105213A2/hu
Publication of HUP0105213A3 publication Critical patent/HUP0105213A3/hu

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/04—Modifications of control circuit to reduce distortion caused by control
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B2005/3996—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Amplifiers (AREA)

Abstract

A tal lm ny t rgya rendszer és elj r s egy lemezmeghajtó rendszerbenlévő adatt roló k"zegről leolvasott jel amplitúdój nak megbecsléséhez.Az elj r s sor n: az erősítő bemenetén érkező olvasójelv laszakéntérzékelnek egy kimeneti jelet az erősítő kimeneténél. Létrehoznak egykül"nb"zeti jelet (113), amely az erősítő kimeneti jel és egyreferenciajel k"z"tti kül"nbséget képviseli; gener lnak egykiegyenlítő-jelet, amely az erősítő erősítés hőmérsékleti együtthatójval "sszefüggő; és létrehoznak egy becsült jelet a kiegyenlítőjelhasznlat val, úgy, hogy a becsült jel magnitúdója megegyezik a kül"nb"zetijel magnitúdój val, a becsült jel jelzi az olvasójel amplitúdój t.Jellemzően a becsült jel létrehoz sa sor n a kiegyenlítőjelet hozz adjk a kül"nb"zeti jelhez, vagy a kiegyenlítőjelet kivonj k a kül"nb"zetijelből. A tal lm ny t rgya tov bb ramk"r egy adatt roló k"zegről nyertolvasójel amplitúdój nak becsléséhez. Az ramk"r tartalmaz: egyerősítés-módosító erősítőt (76), egy kompar tort (82), egy digit lis-analóg talakító (DAC) ramk"rt (88), egy hőmérséklet kiegyenlítésramk"rt (89). A hőmérséklet-kiegyenlítés és ramk"r (89) gener l egykiegyenlítő jelet, amely az erősítő erősítés hőmérsékleti együtthatójval "sszefüggő, és megv ltoztatja az ellen ll selemek feszültségét; éstartalmaz egy logikai ramk"rt (90) amely a kimeneténél egy becsültjelet hoz létre, amely jelzi az olvasójel amplitúdój t, amikor akompar tor bemeneteinél lévő feszültség egyenlő. A tal lm ny t rgyatov bb adatt roló rendszer, amely tartalmazza a fenti ramk"rt. Ó
HU0105213A 1999-02-19 2000-02-10 Variable gain amplifier with temperature compensation for use in a disk drive system HUP0105213A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/253,122 US6282038B1 (en) 1999-02-19 1999-02-19 Variable gain amplifier with temperature compensation for use in a disk drive system
PCT/US2000/003382 WO2000049613A1 (en) 1999-02-19 2000-02-10 Variable gain amplifier with temperature compensation for use in a disk drive system

Publications (2)

Publication Number Publication Date
HUP0105213A2 true HUP0105213A2 (hu) 2002-04-29
HUP0105213A3 HUP0105213A3 (en) 2003-07-28

Family

ID=22958957

Family Applications (1)

Application Number Title Priority Date Filing Date
HU0105213A HUP0105213A3 (en) 1999-02-19 2000-02-10 Variable gain amplifier with temperature compensation for use in a disk drive system

Country Status (13)

Country Link
US (1) US6282038B1 (hu)
EP (1) EP1153390B1 (hu)
JP (1) JP3682470B2 (hu)
KR (1) KR100460376B1 (hu)
CN (1) CN1184632C (hu)
AT (1) ATE237863T1 (hu)
CZ (1) CZ20013013A3 (hu)
DE (1) DE60002178T2 (hu)
HU (1) HUP0105213A3 (hu)
MY (1) MY119878A (hu)
PL (1) PL349276A1 (hu)
RU (1) RU2250517C2 (hu)
WO (1) WO2000049613A1 (hu)

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Publication number Priority date Publication date Assignee Title
US6707629B1 (en) * 2000-06-30 2004-03-16 Texas Instruments Incorporated Digital temperature monitor
US6594104B2 (en) * 2001-02-26 2003-07-15 Hitachi, Ltd. Magnetic disk unit including temperature sensing of IC mounted on suspension
KR100438770B1 (ko) * 2001-05-28 2004-07-05 삼성전자주식회사 데이터 저장 시스템의 설계 파라미터 최적화 방법 및최적화된 설계 파라미터 적용 방법
US7430083B2 (en) * 2002-05-23 2008-09-30 Seagate Technology Llc Virtual head fly profile measurement
US8437720B2 (en) 2002-12-02 2013-05-07 Broadcom Corporation Variable-gain low noise amplifier for digital terrestrial applications
US7260377B2 (en) * 2002-12-02 2007-08-21 Broadcom Corporation Variable-gain low noise amplifier for digital terrestrial applications
US7471941B2 (en) * 2002-12-02 2008-12-30 Broadcom Corporation Amplifier assembly including variable gain amplifier, parallel programmable amplifiers, and AGC
US6798286B2 (en) * 2002-12-02 2004-09-28 Broadcom Corporation Gain control methods and systems in an amplifier assembly
US7190542B2 (en) * 2003-08-13 2007-03-13 Seagate Technology Llc Acoustical noise reduction for a data storage device
US7097110B2 (en) * 2003-09-02 2006-08-29 Texas Instruments Incorporated Temperature compensation systems and methods for use with read/write heads in magnetic storage devices
US7027243B2 (en) * 2004-03-29 2006-04-11 Hitachi Global Storage Technologies Netherlands B.V. Apparatus for providing head amplitude characterization
KR100640608B1 (ko) * 2004-12-11 2006-11-01 삼성전자주식회사 스핀들 모터 드라이버의 전류 이득 변환 제어 방법 및 장치
US7773324B2 (en) 2005-04-12 2010-08-10 Stmicroelectronics, Inc. Phase acquisition loop for a read channel and related read channel, system, and method
US7768732B2 (en) * 2005-04-12 2010-08-03 Stmicroelectronics, Inc. Gain controller for a gain loop of a read channel and related gain loops, read channels, systems, and methods
JP2007184023A (ja) * 2006-01-04 2007-07-19 Hitachi Global Storage Technologies Netherlands Bv ディスク・ドライブ及びその制御方法
US7656219B2 (en) * 2007-01-26 2010-02-02 Atmel Corporation Unity gain voltage buffer with dual supply voltage for managing current consumption in low voltage applications
US7508617B1 (en) * 2007-09-07 2009-03-24 Seagate Technology Llc Fly height compensation using read gain control loop
US8922923B2 (en) 2011-03-01 2014-12-30 Seagate Technology Llc Interleaved automatic gain control for asymmetric data signals
US10312930B1 (en) * 2018-01-25 2019-06-04 Analog Devices Global Unlimited Company ADC digital gain error compensation
US11870512B2 (en) 2022-04-27 2024-01-09 Samsung Electronics Co., Ltd. Distributed closed-loop power control with VGA gain update

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
EP0269756B1 (en) 1986-08-05 1991-01-09 International Business Machines Corporation Gain control circuitry for readback apparatus in a recording system using the partial-response, maximum-likelihood technique
US5162678A (en) 1990-09-18 1992-11-10 Silicon Systems, Inc. Temperature compensation control circuit for exponential gain function of an agc amplifier
US5177453A (en) 1991-07-01 1993-01-05 Raytheon Company Gain control amplifier
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
US5375145A (en) 1992-08-27 1994-12-20 Quantum Corporation Multi-mode gain control loop for PRML class IV sampling data detection channel
US5321559A (en) 1992-08-27 1994-06-14 Quantum Corporation Asynchronous peak detection of information embedded within PRML class IV sampling data detection channel
US5519548A (en) 1993-03-31 1996-05-21 Hewlett-Packard Company Using read channel noise to initialize read channel for head position calibration in a magnetic data storage device
US5442492A (en) 1993-06-29 1995-08-15 International Business Machines Corporation Data recovery procedure using DC offset and gain control for timing loop compensation for partial-response data detection
JP3208975B2 (ja) 1993-12-28 2001-09-17 株式会社日立製作所 アクティブフィルタ制御方式
US5631891A (en) 1994-01-05 1997-05-20 Fujitsu Limited Disk reproducing circuit with automatic gain control
US5491447A (en) 1994-05-13 1996-02-13 International Business Machines Corporation Operational transconductance amplifier with independent transconductance and common mode feedback control
JP3199996B2 (ja) 1995-11-15 2001-08-20 株式会社東芝 ディスク記録再生システム及びそのヘッド浮上変動検出方法
JP3457463B2 (ja) * 1996-04-26 2003-10-20 富士通株式会社 光学的記憶装置
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Also Published As

Publication number Publication date
US6282038B1 (en) 2001-08-28
RU2250517C2 (ru) 2005-04-20
PL349276A1 (en) 2002-07-15
CN1340193A (zh) 2002-03-13
CZ20013013A3 (cs) 2002-01-16
KR20020007300A (ko) 2002-01-26
JP2002537626A (ja) 2002-11-05
DE60002178T2 (de) 2004-03-04
MY119878A (en) 2005-07-29
EP1153390B1 (en) 2003-04-16
JP3682470B2 (ja) 2005-08-10
CN1184632C (zh) 2005-01-12
ATE237863T1 (de) 2003-05-15
HUP0105213A3 (en) 2003-07-28
EP1153390A1 (en) 2001-11-14
KR100460376B1 (ko) 2004-12-08
WO2000049613A1 (en) 2000-08-24
DE60002178D1 (de) 2003-05-22

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