BRPI1000385A2 - dispositivo de disco óptico, e, método de ajuste para condição de gravação para um disco óptico - Google Patents
dispositivo de disco óptico, e, método de ajuste para condição de gravação para um disco óptico Download PDFInfo
- Publication number
- BRPI1000385A2 BRPI1000385A2 BRPI1000385-1A BRPI1000385A BRPI1000385A2 BR PI1000385 A2 BRPI1000385 A2 BR PI1000385A2 BR PI1000385 A BRPI1000385 A BR PI1000385A BR PI1000385 A2 BRPI1000385 A2 BR PI1000385A2
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Classifications
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- 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
-
- 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
- G11B20/1012—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)
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- 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
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- 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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- 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
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- 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
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- 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
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- 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
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
- G11B7/1267—Power calibration
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Probability & Statistics with Applications (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009113152A JP4959749B2 (ja) | 2009-05-08 | 2009-05-08 | 記録条件の調整方法及び光ディスク装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BRPI1000385A2 true BRPI1000385A2 (pt) | 2011-03-22 |
Family
ID=42229259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI1000385-1A BRPI1000385A2 (pt) | 2009-05-08 | 2010-02-26 | dispositivo de disco óptico, e, método de ajuste para condição de gravação para um disco óptico |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8531932B2 (cg-RX-API-DMAC7.html) |
| EP (1) | EP2249343B1 (cg-RX-API-DMAC7.html) |
| JP (1) | JP4959749B2 (cg-RX-API-DMAC7.html) |
| CN (1) | CN101882452B (cg-RX-API-DMAC7.html) |
| BR (1) | BRPI1000385A2 (cg-RX-API-DMAC7.html) |
| MX (1) | MX2010002322A (cg-RX-API-DMAC7.html) |
| MY (1) | MY150349A (cg-RX-API-DMAC7.html) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5469390B2 (ja) * | 2009-07-15 | 2014-04-16 | 日立コンシューマエレクトロニクス株式会社 | 再生信号評価方法及び記録調整方法 |
| JP4812881B2 (ja) * | 2010-01-20 | 2011-11-09 | 日立コンシューマエレクトロニクス株式会社 | 記録条件の調整方法及び光ディスク装置 |
| JP5607148B2 (ja) * | 2010-04-20 | 2014-10-15 | パナソニック株式会社 | 情報再生方法、情報記録方法および情報記録媒体 |
| US8149529B2 (en) * | 2010-07-28 | 2012-04-03 | Lsi Corporation | Dibit extraction for estimation of channel parameters |
| EP3486907B1 (en) * | 2016-08-30 | 2022-05-11 | Sony Semiconductor Solutions Corporation | Signal quality assessment device, method for generating signal quality assessment value, 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 |
| JP7442100B2 (ja) * | 2019-03-29 | 2024-03-04 | 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 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP3697409B2 (ja) * | 2001-11-09 | 2005-09-21 | 株式会社東芝 | 信号品質評価方法および記録補償方法 |
| 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 |
| 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 |
| JP3857685B2 (ja) * | 2003-01-28 | 2006-12-13 | 日本電気株式会社 | 信号評価方法と情報記録再生装置と情報再生装置及び情報媒体 |
| 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 |
| JP4160533B2 (ja) | 2004-06-03 | 2008-10-01 | 株式会社東芝 | 光ディスク記録再生方法及び光ディスク記録再生装置 |
| JP3711140B2 (ja) * | 2005-03-07 | 2005-10-26 | 株式会社東芝 | 情報記録再生装置及びその信号評価方法 |
| 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 |
| JP4655892B2 (ja) * | 2005-11-07 | 2011-03-23 | ソニー株式会社 | 記録再生装置、記録方法 |
| JP5089939B2 (ja) * | 2006-08-11 | 2012-12-05 | ソニーオプティアーク株式会社 | 記録再生装置、評価値演算方法 |
| JP2008152846A (ja) * | 2006-12-15 | 2008-07-03 | Toshiba Corp | 光ディスク装置および光ディスク記録再生方法 |
| JPWO2009041598A1 (ja) * | 2007-09-26 | 2011-01-27 | 日本電気株式会社 | 信号品質評価装置、方法、及び、情報記録再生装置 |
| JP5057925B2 (ja) * | 2007-10-18 | 2012-10-24 | 株式会社日立製作所 | デジタル情報再生方法 |
-
2009
- 2009-05-08 JP JP2009113152A patent/JP4959749B2/ja active Active
- 2009-08-20 CN CN200910168240.1A patent/CN101882452B/zh not_active Expired - Fee Related
- 2009-10-29 US US12/608,099 patent/US8531932B2/en not_active Expired - Fee Related
- 2009-10-30 EP EP09252534.4A patent/EP2249343B1/en not_active Not-in-force
-
2010
- 2010-02-24 MY MYPI2010000792A patent/MY150349A/en unknown
- 2010-02-26 MX MX2010002322A patent/MX2010002322A/es active IP Right Grant
- 2010-02-26 BR BRPI1000385-1A patent/BRPI1000385A2/pt not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP2249343B1 (en) | 2014-04-02 |
| CN101882452A (zh) | 2010-11-10 |
| US20100284257A1 (en) | 2010-11-11 |
| JP2010262702A (ja) | 2010-11-18 |
| JP4959749B2 (ja) | 2012-06-27 |
| EP2249343A1 (en) | 2010-11-10 |
| CN101882452B (zh) | 2013-08-21 |
| MX2010002322A (es) | 2010-11-11 |
| US8531932B2 (en) | 2013-09-10 |
| MY150349A (en) | 2013-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B03A | Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette] | ||
| B06F | Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette] | ||
| B25G | Requested change of headquarter approved |
Owner name: HITACHI CONSUMER ELECTRONICS CO., LTD. (JP) |
|
| B25A | Requested transfer of rights approved |
Owner name: KONINKLIJKE PHILIPS N.V. (NL) |
|
| B06U | Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette] | ||
| B11B | Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements |