DE69424908D1 - Signalverarbeitungsapparat - Google Patents

Signalverarbeitungsapparat

Info

Publication number
DE69424908D1
DE69424908D1 DE69424908T DE69424908T DE69424908D1 DE 69424908 D1 DE69424908 D1 DE 69424908D1 DE 69424908 T DE69424908 T DE 69424908T DE 69424908 T DE69424908 T DE 69424908T DE 69424908 D1 DE69424908 D1 DE 69424908D1
Authority
DE
Germany
Prior art keywords
processing apparatus
signal processing
signal
processing
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
DE69424908T
Other languages
English (en)
Other versions
DE69424908T2 (de
Inventor
Kazuna Kobayashi
Makota Gohda
Yasuyuki Tanaka
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP5256500A external-priority patent/JPH0793899A/ja
Priority claimed from JP5256502A external-priority patent/JPH0793703A/ja
Priority claimed from JP5256501A external-priority patent/JPH0793915A/ja
Priority claimed from JP25650393A external-priority patent/JPH0795098A/ja
Priority claimed from JP6178568A external-priority patent/JPH0845186A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69424908D1 publication Critical patent/DE69424908D1/de
Application granted granted Critical
Publication of DE69424908T2 publication Critical patent/DE69424908T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B20/10083—PR1 or PR(1,1,), i.e. partial response class 1, polynomial 1+D
    • 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
    • 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
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • 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
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03356—Baseband transmission
    • H04L2025/03369—Partial response
DE69424908T 1993-09-20 1994-09-19 Signalverarbeitungsapparat Expired - Fee Related DE69424908T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP5256500A JPH0793899A (ja) 1993-09-20 1993-09-20 磁気記録再生装置
JP5256502A JPH0793703A (ja) 1993-09-20 1993-09-20 磁気記録再生装置
JP5256501A JPH0793915A (ja) 1993-09-20 1993-09-20 磁気記録再生装置
JP25650393A JPH0795098A (ja) 1993-09-20 1993-09-20 信号処理装置
JP6178568A JPH0845186A (ja) 1994-07-29 1994-07-29 Ａｇｃ回路及びディジタル磁気再生装置

Publications (2)

Publication Number Publication Date
DE69424908D1 true DE69424908D1 (de) 2000-07-20
DE69424908T2 DE69424908T2 (de) 2000-11-09

Family

ID=27528727

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69424908T Expired - Fee Related DE69424908T2 (de) 1993-09-20 1994-09-19 Signalverarbeitungsapparat

Country Status (3)

Country Link
US (1) US5809071A (de)
EP (1) EP0644661B1 (de)
DE (1) DE69424908T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517405A1 (de) * 1995-05-16 1996-11-21 Thomson Brandt Gmbh Signalverarbeitungssystem für digitale Signale
US5764858A (en) * 1995-09-14 1998-06-09 University Of Southern California One-dimensional signal processor with optimized solution capability
JP2973946B2 (ja) * 1996-10-04 1999-11-08 日本電気株式会社 データ再生装置
JP3570841B2 (ja) * 1997-03-05 2004-09-29 日本電気株式会社 データ再生装置
JP3855361B2 (ja) * 1997-05-08 2006-12-06 ソニー株式会社 情報再生装置および再生方法
JP3338374B2 (ja) * 1997-06-30 2002-10-28 松下電器産業株式会社 演算処理方法および装置
US6084926A (en) * 1997-12-08 2000-07-04 Ericsson Inc. Method and system for demodulating radio signals
US6252904B1 (en) * 1998-11-13 2001-06-26 Broadcom Corporation High-speed decoder for a multi-pair gigabit transceiver
US6201831B1 (en) * 1998-11-13 2001-03-13 Broadcom Corporation Demodulator for a multi-pair gigabit transceiver
US6249544B1 (en) * 1998-11-13 2001-06-19 Broadcom Corporation System and method for high-speed decoding and ISI compensation in a multi-pair transceiver system
US6253345B1 (en) * 1998-11-13 2001-06-26 Broadcom Corporation System and method for trellis decoding in a multi-pair transceiver system
AU2512300A (en) * 1999-01-20 2000-08-07 Broadcom Corporation Trellis decoder with correction of pair swaps, for use in gigabit ethernet transceivers
AU4492100A (en) * 1999-04-22 2000-11-10 Broadcom Corporation Gigabit ethernet with timing offsets between the twisted pairs
GB2349756B (en) * 1999-05-06 2003-05-14 Sony Uk Ltd Signal processors
JP2000341136A (ja) * 1999-05-27 2000-12-08 Sony Corp 復号装置及びデータの復号方法
US7020185B1 (en) 2000-11-28 2006-03-28 Lucent Technologies Inc. Method and apparatus for determining channel conditions in a communication system
DE10126801B4 (de) * 2001-06-01 2006-09-21 Infineon Technologies Ag Verfahren und Vorrichtung zum Auswerten eines digitalen Informationssignals
US7359463B2 (en) 2001-10-04 2008-04-15 Sony Corporation Code sensing method and apparatus
CN100433156C (zh) * 2002-08-15 2008-11-12 联发科技股份有限公司 光盘机中具有最大似然数据检测电路的数据读出系统
GB2400002A (en) * 2003-03-27 2004-09-29 Tandberg Television Asa Decoding a concatenated convolutional and block encoded signal by marking known correct bits
EP1496512A1 (de) 2003-07-09 2005-01-12 Deutsche Thomson-Brandt Gmbh Verfahren zur adaptiven Datenrückgewinnung
US6980140B1 (en) * 2004-06-18 2005-12-27 Nortel Networks Limited Flash ADC receiver with reduced errors
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
JP2006344294A (ja) * 2005-06-09 2006-12-21 Hitachi Ltd 情報再生装置及び再生信号処理回路

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644564A (en) * 1983-08-05 1987-02-17 International Business Machines Corporation Decoding the output signal of a partial-response class-IV communication or recording device channel
US4583078A (en) * 1984-11-13 1986-04-15 Communications Satellite Corporation Serial Viterbi decoder
US4868830A (en) * 1985-09-27 1989-09-19 California Institute Of Technology Method and apparatus for implementing a traceback maximum-likelihood decoder in a hypercube network
JPH0824270B2 (ja) * 1985-12-25 1996-03-06 日本電信電話株式会社 たたみ込み符号器および最尤復号器
AU629300B2 (en) * 1989-02-28 1992-10-01 Sony Corporation Digital signal reproducing apparatus
US5424882A (en) * 1989-03-13 1995-06-13 Hitachi, Ltd. Signal processor for discriminating recording data
JPH03128552A (ja) * 1989-07-31 1991-05-31 Nec Corp データ伝送システムのための変復調装置
US5050191A (en) * 1989-10-24 1991-09-17 Hughes Aircraft Company Synchronization detector using path metric and branch metric values of a Viterbi decoder
US5265125A (en) * 1990-11-16 1993-11-23 Matsushita Electric Industrial Co., Ltd. Signal detection apparatus for detecting digital information from PCM signal
JP2668455B2 (ja) * 1990-12-20 1997-10-27 富士通株式会社 ビタビ復調制御方式
DE69223438T2 (de) * 1991-04-24 1998-06-04 Koninkl Philips Electronics Nv Abtasttaktrückwinnung für Empfänger, die Viterbi-Verarbeitung benutzen
GB2255482B (en) 1991-05-01 1995-05-10 Silicon Systems Inc Maximum likelihood sequence metric calculator
US5159608A (en) * 1991-08-28 1992-10-27 Falconer David D Method and apparatus for using orthogonal coding in a communication system
US5204874A (en) * 1991-08-28 1993-04-20 Motorola, Inc. Method and apparatus for using orthogonal coding in a communication system
JPH05234279A (ja) * 1992-02-24 1993-09-10 Sony Corp 最尤復号装置及びこれを用いた再生データ復調装置
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

Also Published As

Publication number Publication date
US5809071A (en) 1998-09-15
EP0644661A1 (de) 1995-03-22
DE69424908T2 (de) 2000-11-09
EP0644661B1 (de) 2000-06-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee