DE69535160D1 - Vorrichtung und verfahren zur rauschvorhersagenden maximal-wahrscheinlichkeitsdetektion - Google Patents

Vorrichtung und verfahren zur rauschvorhersagenden maximal-wahrscheinlichkeitsdetektion

Info

Publication number
DE69535160D1
DE69535160D1 DE69535160T DE69535160T DE69535160D1 DE 69535160 D1 DE69535160 D1 DE 69535160D1 DE 69535160 T DE69535160 T DE 69535160T DE 69535160 T DE69535160 T DE 69535160T DE 69535160 D1 DE69535160 D1 DE 69535160D1
Authority
DE
Germany
Prior art keywords
promise
noise
maximum probability
probability detection
detection
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
DE69535160T
Other languages
English (en)
Other versions
DE69535160T2 (de
Inventor
Darrel Coker
Stavros Eleftheriou
Leo Galbraith
Walter Hirt
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.)
HGST Netherlands BV
Original Assignee
Hitachi Global Storage Technologies Netherlands BV
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 Hitachi Global Storage Technologies Netherlands BV filed Critical Hitachi Global Storage Technologies Netherlands BV
Application granted granted Critical
Publication of DE69535160D1 publication Critical patent/DE69535160D1/de
Publication of DE69535160T2 publication Critical patent/DE69535160T2/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
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
    • G11B20/10175—PR4, PR(1,0,-1), i.e. partial response class 4, polynomial (1+D)(1-D)=(1-D2)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • 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
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Algebra (AREA)
  • Pure & Applied Mathematics (AREA)
  • Power Engineering (AREA)
  • Error Detection And Correction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE69535160T 1995-09-18 1995-09-18 Vorrichtung und verfahren zur rauschvorhersagenden maximal-wahrscheinlichkeitsdetektion Expired - Lifetime DE69535160T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB1995/000769 WO1997011544A1 (en) 1995-09-18 1995-09-18 Apparatus and method for noise-predictive maximum-likelihood (npml) detection

Publications (2)

Publication Number Publication Date
DE69535160D1 true DE69535160D1 (de) 2006-09-21
DE69535160T2 DE69535160T2 (de) 2007-06-28

Family

ID=11004368

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69535160T Expired - Lifetime DE69535160T2 (de) 1995-09-18 1995-09-18 Vorrichtung und verfahren zur rauschvorhersagenden maximal-wahrscheinlichkeitsdetektion

Country Status (6)

Country Link
US (1) US6104766A (de)
EP (1) EP0852089B1 (de)
JP (1) JP3157838B2 (de)
KR (1) KR100288672B1 (de)
DE (1) DE69535160T2 (de)
WO (1) WO1997011544A1 (de)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6438180B1 (en) * 1997-05-09 2002-08-20 Carnegie Mellon University Soft and hard sequence detection in ISI memory channels
JP3540329B2 (ja) * 1997-05-15 2004-07-07 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン ノイズ予測最尤検出の装置および方法
US6038269A (en) * 1997-11-20 2000-03-14 National Semiconductor Corporation Detection for digital communication receivers
US6115418A (en) 1998-02-09 2000-09-05 National Semiconductor Corporation Simplified equalizer for twisted pair channel
DE69841213D1 (de) * 1998-02-26 2009-11-19 Italtel Spa Folgeschätzung für phasenstetig modulierte Signale
TW413785B (en) * 1998-04-15 2000-12-01 Fujitsu Ltd Signal processor having feedback loop control for decision feedback equalizer
US6233714B1 (en) * 1998-07-29 2001-05-15 International Business Machines Corporation Generalized method and means for defining and operating a (d, k) partial-response ML detector of binary-coded sequences
US6532272B1 (en) * 1998-08-12 2003-03-11 New Mexico State University Technology Transfer Corporation RAM-search processor for intersymbol interference cancellation
US6415003B1 (en) 1998-09-11 2002-07-02 National Semiconductor Corporation Digital baseline wander correction circuit
US6438163B1 (en) 1998-09-25 2002-08-20 National Semiconductor Corporation Cable length and quality indicator
US6563889B1 (en) * 1998-10-01 2003-05-13 Lsi Logic Corporation Method and apparatus for adapting the boost of a read channel filter
SE521766C2 (sv) * 1999-04-16 2003-12-02 Ericsson Telefon Ab L M Metod och anordning för att undertrycka störningar
US6418172B1 (en) 1999-04-21 2002-07-09 National Semiconductor Corporation Look-ahead maximum likelihood sequence estimation decoder
EP1065851A1 (de) 1999-07-02 2001-01-03 Motorola, Inc. Entscheidungsrückgekoppelter Entzerrer mit zustanderduzierter Folgeschätzung
US6636562B1 (en) * 2000-01-21 2003-10-21 Hitachi Global Storage Technologies Netherlands B.V. Unconstrained equalization method and apparatus with gain and timing bias to control runaway for direct access storage device (DASD) data channels
US7050517B1 (en) 2000-04-28 2006-05-23 National Semiconductor Corporation System and method suitable for receiving gigabit ethernet signals
US7254198B1 (en) 2000-04-28 2007-08-07 National Semiconductor Corporation Receiver system having analog pre-filter and digital equalizer
US6377529B1 (en) * 2000-06-01 2002-04-23 Calimetrics, Inc. Method for providing improved equalization for the reading of marks on optical data-storage media
JP4324316B2 (ja) * 2000-10-23 2009-09-02 株式会社日立グローバルストレージテクノロジーズ 垂直磁気記録再生装置
US6373906B1 (en) * 2000-10-26 2002-04-16 International Business Machines Corporation Method and apparatus for Viterbi detection of generalized partial response signals including two-way add/compare/select for improved channel speed
US20050264906A1 (en) * 2004-05-25 2005-12-01 Haratsch Erich F Method and apparatus for reduced-state Viterbi detection in a read channel of a magnetic recording system
US7340016B2 (en) * 2001-05-11 2008-03-04 Telefonaktiebolaget Lm Ericsson (Publ) Equalizers for multi-branch receiver
US6839196B2 (en) 2001-05-24 2005-01-04 Quantum Corporation Magnetic track following servo algorithm using signal quality
US6894858B1 (en) 2002-08-06 2005-05-17 Storage Technology Corporation Read equalizer optimization based on the PTR effects to write equalization
JP2004253017A (ja) 2003-02-18 2004-09-09 Fujitsu Ltd 記録媒体再生装置、記録媒体再生方法およびハードディスクコントローラ
US20040268208A1 (en) * 2003-06-27 2004-12-30 Seagate Technology Llc Computation of branch metric values in a data detector
US7173784B2 (en) * 2003-10-10 2007-02-06 Hitachi Global Storage Technologies Netherlands B.V. Apparatus for providing data dependent detection in a data read channel
US7099102B2 (en) * 2003-10-20 2006-08-29 Quantum Corporation Multiple format magnetic storage media drive
US7545862B2 (en) * 2004-02-16 2009-06-09 Sony Corporation Adaptive equalizer, decoding device, and error detecting device
US7653154B2 (en) * 2004-05-25 2010-01-26 Agere Systems Inc. Method and apparatus for precomputation and pipelined selection of intersymbol interference estimates in a reduced-state Viterbi detector
US7430084B2 (en) * 2004-12-03 2008-09-30 International Business Machines Corporation Magnetic tape read channel signal values developed employing intermediate bits of the path memory of a PRML viterbi detector
US7522367B2 (en) * 2005-11-23 2009-04-21 International Business Machines Corporation Asynchronous read channel shaped toward generalized partial response characteristics
JP2009532816A (ja) * 2006-04-04 2009-09-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 最尤系列推定デコーダ
US8059745B2 (en) * 2008-08-06 2011-11-15 Texas Instruments Incorporated Sharing logic circuitry for a maximum likelihood MIMO decoder and a viterbi decoder
KR101614767B1 (ko) * 2009-10-28 2016-04-22 에스케이텔레콤 주식회사 벡터 양자화 기반 2차 예측을 통한 동영상 부호화/복호화 장치, 방법 및 기록 매체
US8670199B2 (en) * 2010-04-02 2014-03-11 International Business Machines Corporation Data-dependent noise-predictive maximum likelihood detection (DD-NPML) for magnetic recording
TWI415429B (zh) * 2010-06-17 2013-11-11 Hwa Hsia Inst Of Technology 部分響應等化器優化方法及其裝置
WO2013145747A1 (ja) * 2012-03-29 2013-10-03 パナソニック株式会社 復号装置及び復号方法
US8896949B1 (en) 2013-03-07 2014-11-25 Western Digital Technologies, Inc. Disk drive employing general noise whitening filter to reduce length of data dependent noise whitening filters
US8947812B1 (en) 2014-03-27 2015-02-03 Western Digital Technologies, Inc. Data storage device comprising equalizer filter and inter-track interference filter
US9093083B1 (en) 2014-10-01 2015-07-28 Seagate Technology Llc Adaptive read channel system for different noise types
US9183877B1 (en) 2015-03-20 2015-11-10 Western Digital Technologies, Inc. Data storage device comprising two-dimensional data dependent noise whitening filters for two-dimensional recording
US10445171B2 (en) 2016-02-29 2019-10-15 Seagate Technology Llc On-the-fly error detection algorithm during retry procedure
JP7368271B2 (ja) * 2020-02-27 2023-10-24 株式会社メガチップス 通信装置および通信方法
US11862194B1 (en) 2022-12-01 2024-01-02 International Business Machines Corporation Adaptive data detection on a nonlinear channel

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571734A (en) * 1983-08-05 1986-02-18 International Business Machines Corporation Method and apparatus for decoding the output signal of a partial-response class-IV communication or recording-device channel
US4631735A (en) * 1984-12-28 1986-12-23 Codex Corporation Coded modulation system with feedback
US4713829A (en) * 1985-06-19 1987-12-15 Codex Corporation Coded modulation system with a simplified decoder capable of reducing the effects of channel distortion
US4833693A (en) * 1985-11-21 1989-05-23 Codex Corporation Coded modulation system using interleaving for decision-feedback equalization
US4707681A (en) * 1986-04-24 1987-11-17 International Business Machines Corporation Method and apparatus for implementing optimum PRML codes
NL8701331A (nl) * 1987-06-09 1989-01-02 Philips Nv Datatransmissiesysteem bevattende een beslissingsteruggekoppelde egalisator en gebruik makende van partieleresponsie technieken.
US4786890A (en) * 1987-07-28 1988-11-22 International Business Machines Corporation Method and apparatus for implementing a PRML code
US5031195A (en) * 1989-06-05 1991-07-09 International Business Machines Corporation Fully adaptive modem receiver using whitening matched filtering
US5220466A (en) * 1991-05-21 1993-06-15 International Business Machines Corporation Method and apparatus for digital filter control in a partial-response maximum-likelihood disk drive system
JP2932830B2 (ja) * 1991-05-29 1999-08-09 日本電気株式会社 非線形歪等化用適応型等化器
JPH057128A (ja) * 1991-06-27 1993-01-14 Nec Corp 等化器
US5285480A (en) * 1991-09-03 1994-02-08 General Electric Company Adaptive MLSE-VA receiver for digital cellular radio
US5357520A (en) * 1992-01-31 1994-10-18 International Business Machines Corporation Method and apparatus for precompensation value determination in a PRML data channel
US5196849A (en) * 1992-01-31 1993-03-23 International Business Machines Corporation Method and apparatus for implementing PRML codes with maximum ones
US5258940A (en) * 1992-03-16 1993-11-02 International Business Machines Corporation Distributed arithmetic digital filter in a partial-response maximum-likelihood disk drive system
JP3258067B2 (ja) * 1992-03-25 2002-02-18 株式会社東芝 最尤系列推定方式
US5341249A (en) * 1992-08-27 1994-08-23 Quantum Corporation Disk drive using PRML class IV sampling data detection with digital adaptive equalization
US5341387A (en) * 1992-08-27 1994-08-23 Quantum Corporation Viterbi detector having adjustable detection thresholds for PRML class IV sampling data detection
JP3470341B2 (ja) * 1992-11-13 2003-11-25 ソニー株式会社 ディジタル信号再生回路
US5453797A (en) * 1993-02-22 1995-09-26 Massachusetts Institute Of Technology Method and apparatus for decoding broadcast digital HDTV in the presence of quasi-cyclostationary interference
WO1994029989A1 (en) * 1993-06-14 1994-12-22 International Business Machines Corporation Adaptive noise-predictive partial-response equalization for channels with spectral nulls
US5619539A (en) * 1994-02-28 1997-04-08 International Business Machines Corporation Data detection methods and apparatus for a direct access storage device
WO1996005593A1 (en) * 1994-08-10 1996-02-22 Maxtor Corporation A tuned viterbi detector and equalizer system
US5513216A (en) * 1994-10-13 1996-04-30 At&T Corp. Hybrid equalizer arrangement for use in data communications equipment
US5546430A (en) * 1995-05-01 1996-08-13 Universite du Quebeca Hull Detector for demodulating a received signal and producing an information data signal with reduced intersymbol interference
US5734680A (en) * 1995-08-09 1998-03-31 Hewlett-Packard Co. Analog implementation of a partial response maximum likelihood (PRML) read channel
US5768320A (en) * 1995-09-05 1998-06-16 Analog Devices, Inc. Read system for implementing PR4 and higher order PRML signals
US5822143A (en) * 1996-06-11 1998-10-13 Western Digital Corporation Decision feedback equalization implementation of partial-response signaling in a magnetic recording channel

Also Published As

Publication number Publication date
US6104766A (en) 2000-08-15
KR100288672B1 (ko) 2001-05-02
DE69535160T2 (de) 2007-06-28
WO1997011544A1 (en) 1997-03-27
KR19990036443A (ko) 1999-05-25
JP3157838B2 (ja) 2001-04-16
EP0852089B1 (de) 2006-08-09
EP0852089A1 (de) 1998-07-08
JPH10512732A (ja) 1998-12-02

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