BRPI0902903A2 - método de avaliação de sinal e aparelho de avaliação de sinal - Google Patents

método de avaliação de sinal e aparelho de avaliação de sinal

Info

Publication number
BRPI0902903A2
BRPI0902903A2 BRPI0902903A BRPI0902903A BRPI0902903A2 BR PI0902903 A2 BRPI0902903 A2 BR PI0902903A2 BR PI0902903 A BRPI0902903 A BR PI0902903A BR PI0902903 A BRPI0902903 A BR PI0902903A BR PI0902903 A2 BRPI0902903 A2 BR PI0902903A2
Authority
BR
Brazil
Prior art keywords
signal evaluation
evaluation method
evaluation apparatus
signal
evaluation
Prior art date
Application number
BRPI0902903A
Other languages
English (en)
Inventor
Harumitsu Miyashita
Kohei Nakata
Naohiro Kimura
Yasumori Hino
Original Assignee
Panasonic 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 Panasonic Corp filed Critical Panasonic Corp
Publication of BRPI0902903A2 publication Critical patent/BRPI0902903A2/pt

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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • 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
    • G11B20/10055—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
    • G11B20/1012—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(1,2,2,2,1)
    • 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
    • G11B20/10277—Improvement or modification of read or write signals bit detection or demodulation methods the demodulation process being specifically adapted to partial response channels, e.g. PRML decoding
    • 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
    • G11B20/10361—Improvement or modification of read or write signals signal quality assessment digital demodulation process
    • 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
    • G11B20/10361—Improvement or modification of read or write signals signal quality assessment digital demodulation process
    • G11B20/1037—Improvement or modification of read or write signals signal quality assessment digital demodulation process based on hard decisions, e.g. by evaluating bit error rates before or after ECC decoding
    • 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
    • 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
    • G11B20/10472—Improvement or modification of read or write signals signal quality assessment derived from statistics of other quality measures, e.g. their mean, variance or skew
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • G11B20/182—Testing using test patterns
    • 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
    • G11B20/22—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions
    • G11B20/225—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions for reducing wow or flutter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
BRPI0902903A 2008-02-28 2009-02-27 método de avaliação de sinal e aparelho de avaliação de sinal BRPI0902903A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US3211208P 2008-02-28 2008-02-28
US4826208P 2008-04-28 2008-04-28
PCT/JP2009/000907 WO2009107399A1 (ja) 2008-02-28 2009-02-27 信号評価方法および信号評価装置

Publications (1)

Publication Number Publication Date
BRPI0902903A2 true BRPI0902903A2 (pt) 2015-09-22

Family

ID=41015806

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0902903A BRPI0902903A2 (pt) 2008-02-28 2009-02-27 método de avaliação de sinal e aparelho de avaliação de sinal

Country Status (11)

Country Link
US (2) US8068399B2 (pt)
EP (1) EP2246855A4 (pt)
JP (1) JP5450376B2 (pt)
KR (1) KR20100115699A (pt)
CN (1) CN101681658A (pt)
AU (1) AU2009219544A1 (pt)
BR (1) BRPI0902903A2 (pt)
CA (1) CA2684790A1 (pt)
MX (1) MX2009011558A (pt)
RU (1) RU2009139747A (pt)
WO (1) WO2009107399A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5238436B2 (ja) * 2008-09-30 2013-07-17 株式会社日立製作所 光ディスク記録装置、光ディスク再生装置、情報記録方法および情報再生方法
US8179760B2 (en) * 2008-10-02 2012-05-15 Panasonic Corporation Reproduction signal evaluation method, information recording medium, reproduction apparatus and recording apparatus
EP2333776A4 (en) * 2008-10-02 2012-06-13 Panasonic Corp METHOD FOR EVALUATING A REPRODUCED SIGNAL, INFORMATION RECORDING MEDIUM, PLAYING DEVICE AND RECORDING DEVICE
JP4764939B2 (ja) 2009-04-14 2011-09-07 株式会社日立製作所 記録条件の調整方法及び光ディスク装置
JP5372864B2 (ja) * 2009-08-18 2013-12-18 パナソニック株式会社 多層光ディスクおよび光ディスク装置
WO2012008094A1 (ja) * 2010-07-12 2012-01-19 パナソニック株式会社 信号評価指標演算回路および光ディスク装置
KR20130037547A (ko) * 2011-10-06 2013-04-16 삼성전자주식회사 기록 매체 재생 방법 및 이를 적용한 기록 매체 재생 장치
US9053217B2 (en) * 2013-02-17 2015-06-09 Lsi Corporation Ratio-adjustable sync mark detection system
US10490222B2 (en) * 2016-08-30 2019-11-26 Sony Semiconductor Solutions Corporation Signal quality evaluation device, signal quality evaluation value generation method, and reproduction device
US9892752B1 (en) * 2017-06-15 2018-02-13 Seagate Technology Llc Selecting a maximum laser power for a calibration based on a previously measured function
WO2020202765A1 (ja) * 2019-03-29 2020-10-08 パナソニックＩｐマネジメント株式会社 記録状態評価方法、記録補償方法及び情報記録再生装置
CN113760682B (zh) * 2021-08-20 2024-02-23 浪潮电子信息产业股份有限公司 一种内存信号质量评估方法、系统及装置
KR20230075270A (ko) * 2021-11-22 2023-05-31 현대모비스 주식회사 빔 패턴 제어 장치 및 방법
CN119071165A (zh) * 2024-11-06 2024-12-03 浙江省邮电工程建设有限公司 一种通信建设数字化管理方法与系统

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JP2003051163A (ja) 2001-05-28 2003-02-21 Sharp Corp 信号品質評価方法及び再生装置
EP1262971B1 (en) 2001-05-28 2009-07-29 Sharp Kabushiki Kaisha BER evaluation in an optical disk decoder by counting a number of signals after PRML having a likelihood below a threshold.
JP3926688B2 (ja) 2001-07-19 2007-06-06 松下電器産業株式会社 再生信号品質評価方法および情報再生装置
US20030067998A1 (en) 2001-07-19 2003-04-10 Matsushita Electric Industrial Co., Ltd. Method for evaluating the quality of read signal and apparatus for reading information
JP3668178B2 (ja) * 2001-11-09 2005-07-06 株式会社東芝 情報記録再生装置とその信号評価方法及び情報記録再生媒体
JP3817470B2 (ja) 2001-12-04 2006-09-06 シャープ株式会社 信号評価装置および信号評価方法
JP3668202B2 (ja) * 2002-03-13 2005-07-06 株式会社東芝 情報記録再生装置及びその信号評価方法
JP4102738B2 (ja) * 2002-12-17 2008-06-18 日本電気株式会社 光ディスクの信号品質評価方法、品質評価装置、および、光ディスク装置
EP1443509A3 (en) * 2003-01-28 2006-01-11 Kabushiki Kaisha Toshiba Signal evaluation method, information recording/reproducing apparatus, information reproducing apparatus, and information recording medium
US7038869B2 (en) 2003-04-14 2006-05-02 Matsushita Electric Industrial Co., Ltd. Recording control apparatus, recording and reproduction apparatus, and recording control method
JP2004335079A (ja) 2003-04-14 2004-11-25 Matsushita Electric Ind Co Ltd 記録制御装置、記録再生装置および記録制御方法
JP4313755B2 (ja) * 2004-05-07 2009-08-12 株式会社日立製作所 再生信号の評価方法および光ディスク装置
JP2006164318A (ja) 2004-12-02 2006-06-22 Sony Corp 最尤復号装置、信号評価方法
JP4622632B2 (ja) * 2005-03-31 2011-02-02 ソニー株式会社 最尤復号装置、信号評価方法、再生装置
JP4750488B2 (ja) * 2005-07-08 2011-08-17 ソニー株式会社 評価装置、再生装置、評価方法
KR100658783B1 (ko) * 2006-02-21 2006-12-19 삼성전자주식회사 광 디스크 재생 장치
EP2043102A4 (en) * 2006-12-28 2011-07-06 Panasonic Corp Evaluation method for an information recording medium, information recording medium, method for producing an information recording medium, signal processing method, and access control device

Also Published As

Publication number Publication date
JP5450376B2 (ja) 2014-03-26
EP2246855A4 (en) 2011-07-27
AU2009219544A1 (en) 2009-09-03
CN101681658A (zh) 2010-03-24
MX2009011558A (es) 2009-11-27
US20090225639A1 (en) 2009-09-10
EP2246855A1 (en) 2010-11-03
KR20100115699A (ko) 2010-10-28
RU2009139747A (ru) 2011-05-10
US8068399B2 (en) 2011-11-29
US8098557B2 (en) 2012-01-17
WO2009107399A1 (ja) 2009-09-03
CA2684790A1 (en) 2009-09-03
US20110149704A1 (en) 2011-06-23
JPWO2009107399A1 (ja) 2011-06-30

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Legal Events

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B25A Requested transfer of rights approved

Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (JP)

Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B11E Dismissal acc. art. 34 of ipl - requirements for examination incomplete
B11T Dismissal: dismissal of application maintained