SG46748A1 - A read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads - Google Patents

A read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads

Info

Publication number
SG46748A1
SG46748A1 SG1996010542A SG1996010542A SG46748A1 SG 46748 A1 SG46748 A1 SG 46748A1 SG 1996010542 A SG1996010542 A SG 1996010542A SG 1996010542 A SG1996010542 A SG 1996010542A SG 46748 A1 SG46748 A1 SG 46748A1
Authority
SG
Singapore
Prior art keywords
magneto
effects associated
read channel
nonlinear signal
signal effects
Prior art date
Application number
SG1996010542A
Other languages
English (en)
Inventor
Jeffrey Lee Sonntag
Original Assignee
At & T 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 At & T Corp filed Critical At & T Corp
Publication of SG46748A1 publication Critical patent/SG46748A1/en

Links

Classifications

    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Digital Magnetic Recording (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Magnetic Heads (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
SG1996010542A 1995-09-27 1996-08-26 A read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads SG46748A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/534,524 US5744993A (en) 1995-09-27 1995-09-27 Read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads

Publications (1)

Publication Number Publication Date
SG46748A1 true SG46748A1 (en) 1998-02-20

Family

ID=24130441

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996010542A SG46748A1 (en) 1995-09-27 1996-08-26 A read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads

Country Status (5)

Country Link
US (1) US5744993A (ja)
EP (1) EP0766244B1 (ja)
JP (2) JP4101319B2 (ja)
DE (1) DE69616472T2 (ja)
SG (1) SG46748A1 (ja)

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Publication number Priority date Publication date Assignee Title
JP3648308B2 (ja) * 1995-11-30 2005-05-18 株式会社日立グローバルストレージテクノロジーズ 等化器および磁気記録信号再生装置
JP2828052B2 (ja) * 1996-08-12 1998-11-25 日本電気株式会社 Ｍｒヘッド用の再生信号波形制御装置
US7012772B1 (en) 1998-09-02 2006-03-14 Cirrus Logic, Inc. Sampled amplitude read channel employing an adaptive non-linear correction circuit for correcting non-linear distortions in a read signal
US6449110B1 (en) 1999-02-03 2002-09-10 Cirrus Logic, Inc. Optimizing operation of a disk storage system by increasing the gain of a non-linear transducer and correcting the non-linear distortions using a non-linear correction circuit
US6587292B1 (en) 1999-04-16 2003-07-01 Infineon Technologies North America Corp. Magneto-resistive asymmetry compensation loop
KR100472523B1 (ko) * 1999-04-21 2005-03-08 시게이트 테크놀로지 엘엘씨 디지털 비대칭 판독 신호를 정정하는 방법 및 장치
US6396651B1 (en) 1999-07-12 2002-05-28 Deanne S. Grover Gear-shifting compensation system and method for nonlinear input elements
US6381085B1 (en) * 1999-07-12 2002-04-30 Cirrus Logic, Inc. Zero forcing adaptive equalization in a disk drive read channel
JP2001351329A (ja) 2000-06-08 2001-12-21 Sony Corp 非線型補償回路および非線型補償方法、非線型補償回路の制御回路およびその制御方法、ならびにこれらを用いた記録再生装置
JP3750555B2 (ja) 2001-04-17 2006-03-01 ソニー株式会社 アシンメトリ補正回路およびそれを用いた情報再生装置
US6633447B2 (en) * 2001-05-25 2003-10-14 Infineon Technologies Ag Method and apparatus for compensation of second order distortion
US7161752B1 (en) 2003-11-05 2007-01-09 Marvell International Ltd. Asymmetric compensation circuit
JP4593959B2 (ja) * 2004-04-09 2010-12-08 ソニー株式会社 適応等化装置及び方法
US7079342B1 (en) 2004-07-26 2006-07-18 Marvell International Ltd. Method and apparatus for asymmetry correction in magnetic recording channels
JP4557623B2 (ja) * 2004-07-29 2010-10-06 キヤノン株式会社 画像形成装置
US7511910B1 (en) 2004-10-27 2009-03-31 Marvell International Ltd. Asymmetry correction in read signal
US7298570B1 (en) * 2004-10-27 2007-11-20 Marvell International Ltd. Asymmetry correction in read signal
US7382561B1 (en) * 2005-06-30 2008-06-03 Certance Llc Measuring and correcting asymmetry in magnetic recording devices
ITMI20060330A1 (it) * 2006-02-24 2007-08-25 St Microelectronics Srl Circuito di correzione per distorsioni di segnale di seconda armonica
US8477581B1 (en) * 2007-04-17 2013-07-02 Marvell International Ltd. Asymmetry compensation system
US8164845B1 (en) * 2007-08-08 2012-04-24 Marvell International Ltd. Method and apparatus for asymmetry correction in magnetic recording channels
US9280995B2 (en) 2014-03-28 2016-03-08 Avago Technologies General Ip (Singapore) Pte. Ltd. Locking a disk-locked clock using timestamps of successive servo address marks in a spiral servo track
US10958227B2 (en) * 2019-05-07 2021-03-23 Analog Devices, Inc. Amplifier nonlinear offset drift correction

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GB269756A (en) * 1926-06-17 1927-04-28 Pennant Mfg Company Ltd Improvements in clips or brackets for supporting containers
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
US4849826A (en) * 1986-11-14 1989-07-18 Matsushita Electric Industrial Co., Ltd. Digital non-linear pre-emphasis/de-emphasis apparatus for eliminating noise components from video signals in a video signal processing system
US4914398A (en) * 1988-08-01 1990-04-03 International Business Machines Corporation Method and circuitry to suppress additive disturbances in data channels containing MR sensors
JPH05159209A (ja) * 1991-12-09 1993-06-25 Hitachi Ltd 信号処理装置
US5418660A (en) * 1991-12-09 1995-05-23 Hitachi, Ltd. Information processing apparatus for processing reproduction signal having nonlinear characteristics
US5367409A (en) * 1993-04-29 1994-11-22 International Business Machines Corporation Even harmonic distortion compensation for digital data detection
JPH0798804A (ja) * 1993-08-03 1995-04-11 Sony Corp デイジタル磁気再生装置及びデイジタル磁気記録再生装置
JPH0757227A (ja) * 1993-08-19 1995-03-03 Sony Corp 再生ヘッド非線形歪の定量評価装置
US5459679A (en) * 1994-07-18 1995-10-17 Quantum Corporation Real-time DC offset control and associated method
US5583706A (en) * 1994-11-17 1996-12-10 Cirrus Logic, Inc. Decimation DC offset control in a sampled amplitude read channel

Also Published As

Publication number Publication date
JP4101319B2 (ja) 2008-06-18
US5744993A (en) 1998-04-28
EP0766244A3 (en) 1997-08-20
EP0766244B1 (en) 2001-10-31
JP2007257832A (ja) 2007-10-04
DE69616472T2 (de) 2002-07-11
JPH09134501A (ja) 1997-05-20
DE69616472D1 (de) 2001-12-06
EP0766244A2 (en) 1997-04-02

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