DE60030061D1 - Ein lesekanal mit programmierbarer bandbreitensteuerung - Google Patents

Ein lesekanal mit programmierbarer bandbreitensteuerung

Info

Publication number
DE60030061D1
DE60030061D1 DE60030061T DE60030061T DE60030061D1 DE 60030061 D1 DE60030061 D1 DE 60030061D1 DE 60030061 T DE60030061 T DE 60030061T DE 60030061 T DE60030061 T DE 60030061T DE 60030061 D1 DE60030061 D1 DE 60030061D1
Authority
DE
Germany
Prior art keywords
bandwidth control
reading channel
programmable bandwidth
programmable
reading
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
DE60030061T
Other languages
English (en)
Other versions
DE60030061T2 (de
Inventor
M Bhandari
David Allouche
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of DE60030061D1 publication Critical patent/DE60030061D1/de
Application granted granted Critical
Publication of DE60030061T2 publication Critical patent/DE60030061T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • 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
    • G11B5/09—Digital recording
    • 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
    • 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
    • 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
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
    • G11B33/122—Arrangements for providing electrical connections, e.g. connectors, cables, switches
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45458—Indexing scheme relating to differential amplifiers the CSC comprising one or more capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45612—Indexing scheme relating to differential amplifiers the IC comprising one or more input source followers as input stages in the IC
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45648—Indexing scheme relating to differential amplifiers the LC comprising two current sources, which are not cascode current sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Networks Using Active Elements (AREA)
DE60030061T 1999-04-28 2000-04-17 Ein lesekanal mit programmierbarer bandbreitensteuerung Expired - Lifetime DE60030061T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/300,901 US6473253B1 (en) 1999-04-28 1999-04-28 Read channel with programmable bandwidth control
US300901 1999-04-28
PCT/EP2000/003537 WO2000067260A1 (en) 1999-04-28 2000-04-17 A read channel with programmable bandwidth control

Publications (2)

Publication Number Publication Date
DE60030061D1 true DE60030061D1 (de) 2006-09-28
DE60030061T2 DE60030061T2 (de) 2007-03-29

Family

ID=23161076

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60030061T Expired - Lifetime DE60030061T2 (de) 1999-04-28 2000-04-17 Ein lesekanal mit programmierbarer bandbreitensteuerung

Country Status (6)

Country Link
US (1) US6473253B1 (de)
EP (1) EP1092221B1 (de)
JP (1) JP2002543551A (de)
KR (1) KR100717911B1 (de)
DE (1) DE60030061T2 (de)
WO (1) WO2000067260A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6621649B1 (en) * 2000-11-10 2003-09-16 Texas Instruments Incorporated Write-to-read switching improvement for differential preamplifier circuits in hard disk drive systems
JP3857255B2 (ja) * 2003-06-12 2006-12-13 ローム株式会社 磁気記録再生装置
US6946909B2 (en) * 2003-09-24 2005-09-20 Texas Instruments Incorporated Impedance matched low noise amplifier
JP4549745B2 (ja) * 2004-06-10 2010-09-22 富士通株式会社 レシーバ回路
US8014098B1 (en) * 2010-07-26 2011-09-06 Texas Instruments Incorporated Technique for duty cycle shift in hard disk drive write system

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882540A (en) * 1974-06-17 1975-05-06 Ibm Readback circuits for digital signal recorders
US4019048A (en) * 1976-03-22 1977-04-19 Bell Telephone Laboratories, Incorporated Regenerator for an optical transmission system
US4376267A (en) * 1980-11-24 1983-03-08 Martin Martietta Corporation Video preamplifier for laser systems
US4539527A (en) * 1983-07-30 1985-09-03 Victor Company Of Japan, Ltd. Noise reduction by linear interpolation using a dual function amplifier circuit
JPS62114313A (ja) 1985-11-14 1987-05-26 Toshiba Corp 利得可変増幅器
US4839573A (en) * 1986-08-18 1989-06-13 Wise William L Method and apparatus for feedback control loop bandwidth and phase margin regulation
GB2208053B (en) 1987-08-11 1992-01-29 Soundcraft Electronics Ltd A preamplifier
US5157559A (en) * 1989-04-26 1992-10-20 Vtc Inc. Adjustable bandwidth differentiating amplifier for a magnetic disk drive
US5270875A (en) * 1990-11-13 1993-12-14 Colorado Memory Systems, Inc. Programmable filter/equalizer for duel speed and density magnetic recording devices
US5227737A (en) * 1990-12-05 1993-07-13 Vtc Inc. Method and apparatus for adjusting the pole positions of a differentiating amplifier
US5331478A (en) * 1992-10-07 1994-07-19 Silicon Systems, Inc. Magnetoresistive head amplifier
JPH07244805A (ja) * 1994-03-08 1995-09-19 Rohm Co Ltd 再生入力増幅回路及びｖｔｒ
US5457427A (en) * 1994-04-29 1995-10-10 Philips Electronics North America Corporation High-frequency amplifier means with enhanced output resistance
GB2297447A (en) * 1995-01-27 1996-07-31 Seagate Microelectron Ltd Amplifier
US5633765A (en) * 1995-10-19 1997-05-27 Samsung Electronics, Ltd. Adaptive pole-zero cancellation for wide bandwidth magnetoresistive pre-amplifier
US5818656A (en) * 1996-03-12 1998-10-06 International Business Machines Corporation Circuitry for correction of thermal transients in the analog signal from a magnetoresistive sensor
US5774505A (en) * 1996-04-04 1998-06-30 Hewlett-Packard Company Intersymbol interference cancellation with reduced complexity
US5831784A (en) * 1996-09-05 1998-11-03 Vtc, Inc. Pseudo differential voltage sense MR preamplifier with improved bandwidth
JPH10247830A (ja) 1997-03-05 1998-09-14 Sony Corp 負性アンプ回路
JPH11185386A (ja) * 1997-12-25 1999-07-09 Toshiba Corp 磁気記録再生装置及び同装置に適用されるフィルタ調整方法

Also Published As

Publication number Publication date
EP1092221B1 (de) 2006-08-16
JP2002543551A (ja) 2002-12-17
EP1092221A1 (de) 2001-04-18
KR20010071615A (ko) 2001-07-28
KR100717911B1 (ko) 2007-05-11
WO2000067260A1 (en) 2000-11-09
US6473253B1 (en) 2002-10-29
DE60030061T2 (de) 2007-03-29

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition