WO2008090750A1 - 情報再生装置および情報再生方法 - Google Patents

情報再生装置および情報再生方法 Download PDF

Info

Publication number
WO2008090750A1
WO2008090750A1 PCT/JP2008/050025 JP2008050025W WO2008090750A1 WO 2008090750 A1 WO2008090750 A1 WO 2008090750A1 JP 2008050025 W JP2008050025 W JP 2008050025W WO 2008090750 A1 WO2008090750 A1 WO 2008090750A1
Authority
WO
WIPO (PCT)
Prior art keywords
clock
synchronization
outputs
information reproduction
output data
Prior art date
Application number
PCT/JP2008/050025
Other languages
English (en)
French (fr)
Inventor
Hiromi Honma
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to US12/524,072 priority Critical patent/US8004443B2/en
Publication of WO2008090750A1 publication Critical patent/WO2008090750A1/ja

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
    • 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
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • 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
    • 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
    • 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
    • G11B20/10111—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 partial response PR(1,2,2,1)
    • 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
    • G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
    • 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
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • G11B20/10287—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors
    • G11B20/10296—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors using the Viterbi algorithm
    • 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
    • G11B20/10305—Improvement or modification of read or write signals signal quality assessment
    • G11B20/10398—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors
    • G11B20/10425—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors by counting out-of-lock events of a PLL
    • 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
    • G11B20/10481—Improvement or modification of read or write signals optimisation methods
    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

　情報再生装置は、アナログデジタル変換手段、等化手段、補間手段、最尤検出手段、ＰＬＬ手段を具備する。アナログデジタル変換手段は最小ラン長が１のラン長制限符号により情報が記録されている光ディスク媒体から読み出す読み出し信号をデジタル信号に変換し、チャネル周波数のＮ／Ｍ倍の第１クロックに同期して出力する。このとき、Ｎを２以上の整数、ＭをＮ／Ｍ＞０．５を満たす整数とする。等化手段は第１クロックに同期してデジタル信号をＰＲ特性に等化する。補間手段は等化手段から出力されるＮ個の入力データに基づいてＭ個の出力データに変換し、チャネル周波数の１／Ｍ倍の第２クロックに同期して出力データを出力する。最尤検出手段は補間手段から出力される出力データに基づいてＭビットの検出情報に変換し、第２クロックに同期して検出情報を出力する。ＰＬＬ手段は第１クロックと第２クロックとを生成する。
PCT/JP2008/050025 2007-01-23 2008-01-07 情報再生装置および情報再生方法 WO2008090750A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/524,072 US8004443B2 (en) 2007-01-23 2008-01-07 Information readout apparatus and information reproducing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-013000 2007-01-23
JP2007013000A JP4222418B2 (ja) 2007-01-23 2007-01-23 情報再生装置および情報再生方法

Publications (1)

Publication Number Publication Date
WO2008090750A1 true WO2008090750A1 (ja) 2008-07-31

Family

ID=39644325

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050025 WO2008090750A1 (ja) 2007-01-23 2008-01-07 情報再生装置および情報再生方法

Country Status (3)

Country Link
US (1) US8004443B2 (ja)
JP (1) JP4222418B2 (ja)
WO (1) WO2008090750A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011014196A (ja) * 2009-07-02 2011-01-20 Renesas Electronics Corp 適応等化器、情報再生装置、及び適応等化方法
US9747161B2 (en) * 2014-10-30 2017-08-29 Fujifilm Corporation Signal processing device, magnetic information playback device, and signal processing method
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001101799A (ja) * 1999-10-01 2001-04-13 Matsushita Electric Ind Co Ltd デジタル再生信号処理装置
JP2003036612A (ja) * 2001-07-26 2003-02-07 Matsushita Electric Ind Co Ltd デジタルデータ再生装置
JP2006004465A (ja) * 2004-06-15 2006-01-05 Hitachi Ltd 光ディスク装置
JP2008010097A (ja) * 2006-06-30 2008-01-17 Toshiba Corp 記録媒体再生装置、およびその再生方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6721255B1 (en) * 1998-10-28 2004-04-13 Matsushita Electric Industrial Co., Ltd. Device and method for recording data to optical disk using recording pulse with corrected edge position
JP2001184795A (ja) * 1999-12-24 2001-07-06 Nec Corp 適応等化器を内蔵した情報検出回路およびこれを用いた光ディスク装置
JP2002025200A (ja) * 2000-06-30 2002-01-25 Sony Corp 情報再生装置
JP3949357B2 (ja) * 2000-07-13 2007-07-25 富士通株式会社 復調装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001101799A (ja) * 1999-10-01 2001-04-13 Matsushita Electric Ind Co Ltd デジタル再生信号処理装置
JP2003036612A (ja) * 2001-07-26 2003-02-07 Matsushita Electric Ind Co Ltd デジタルデータ再生装置
JP2006004465A (ja) * 2004-06-15 2006-01-05 Hitachi Ltd 光ディスク装置
JP2008010097A (ja) * 2006-06-30 2008-01-17 Toshiba Corp 記録媒体再生装置、およびその再生方法

Also Published As

Publication number Publication date
US20100054716A1 (en) 2010-03-04
US8004443B2 (en) 2011-08-23
JP2008181583A (ja) 2008-08-07
JP4222418B2 (ja) 2009-02-12

Similar Documents

Publication Publication Date Title
ATE442651T1 (de) Lesekanalvorrichtung mit asynchronem oversampling,synchroner fraktional beabstandeter entzerrung und digitaler verstärkungsregelung.
WO2003010766A1 (en) Information recording medium, and apparatus and method for recording information on information recording medium
EP2136369A3 (en) Optical information recording method, optical information reproduction method and optical disk device
TW200746058A (en) An asynchronous read channel shaped toward generalized partial response characteristics
TW200606842A (en) Digital data coding apparatus, DVD recording apparatus, and method of using the same
WO2008090750A1 (ja) 情報再生装置および情報再生方法
EP2259256A4 (en) VOLUME INFORMATION RECORDING MEDIUM, INFORMATION RECORDING DEVICE, INFORMATION PLAYER AND OPTICAL READER
WO2005031738A8 (ja) Itrデータ再生装置、記録再生システムおよび補間フィルタ
JP4679640B2 (ja) 最尤復号装置及び情報再生装置
WO2009072305A1 (ja) 情報記録方法および情報再生方法
WO2008032700A9 (ja) 光学的情報記録再生装置及び記録マーク品質測定方法
TW493165B (en) Detector error suppression method
EP1603293A3 (en) Receiver for optical signals comprising a Viterbi equalizer and a parameter estimation device
US7330137B2 (en) Method and apparatus for RLL code encoding and decoding
WO2003038567A3 (en) Digital audio device
TW200512742A (en) Device and method for data reproduction
TW200609917A (en) Decoding apparatus and method of optical information reproducing system
EA200300859A1 (ru) Способ преобразования м-битовых информационных слов в модулированный сигнал
CN101997547A (zh) 电子装置和光驱
WO2008024186A3 (en) Method and system for data transmission with decreased bit error rate
US20070182597A1 (en) Modulation code system and methods of encoding and decoding a signal
CN101908357B (zh) 数据恢复的校正电路与方法
US6664904B2 (en) Method and device for recovering RLL constrained data to be decoded
US20100066722A1 (en) Information reproduction appartus and video display apparatus
US20100172629A1 (en) Reproduction signal processing device and video display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08702906

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 12524072

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 08702906

Country of ref document: EP

Kind code of ref document: A1