WO2008139712A1 - 光記録再生の信号評価方法、光記録再生方法 - Google Patents
光記録再生の信号評価方法、光記録再生方法 Download PDFInfo
- Publication number
- WO2008139712A1 WO2008139712A1 PCT/JP2008/001110 JP2008001110W WO2008139712A1 WO 2008139712 A1 WO2008139712 A1 WO 2008139712A1 JP 2008001110 W JP2008001110 W JP 2008001110W WO 2008139712 A1 WO2008139712 A1 WO 2008139712A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical recording
- signal
- reproduction
- signal evaluation
- evaluation method
- Prior art date
Links
- 238000011156 evaluation Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 230000003287 optical effect Effects 0.000 title 2
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
- G11B20/10046—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
- 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
- G11B20/10481—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
- 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)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
波長λとなるレーザー光を、開口数NAの対物レンズを介して媒体に照射して記録再生する際の信号評価方法であって、媒体に記録されている理想信号と、レーザー光の照射によって得られる実信号の差異に関する情報を、理想信号の信号レベル毎に統計処理し、統計処理によって得られる統計値を用いて実信号の品質評価を行うようにした。これにより、PRML識別方式に依存することなく、信号品質を客観的に評価できるようにする。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007123003A JP4748100B2 (ja) | 2007-05-08 | 2007-05-08 | 光記録再生の信号評価方法、光記録再生方法 |
JP2007-123003 | 2007-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008139712A1 true WO2008139712A1 (ja) | 2008-11-20 |
Family
ID=39969395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/001110 WO2008139712A1 (ja) | 2007-05-08 | 2008-04-28 | 光記録再生の信号評価方法、光記録再生方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8189443B2 (ja) |
JP (1) | JP4748100B2 (ja) |
WO (1) | WO2008139712A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9219600B1 (en) * | 2015-02-25 | 2015-12-22 | L-3 Communications Corp. | Synchronization through waveform correlation |
RU2625051C1 (ru) * | 2016-02-18 | 2017-07-11 | Акционерное общество "Лаборатория Касперского" | Система и способ обнаружений аномалий в технологической системе |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03144969A (ja) * | 1989-10-31 | 1991-06-20 | Internatl Business Mach Corp <Ibm> | 回転式磁気記憶装置およびそのデータ誤り率決定方法 |
JPH08195037A (ja) * | 1995-01-20 | 1996-07-30 | Pioneer Electron Corp | 光ディスク及び記録情報再生装置の評価装置 |
JPH10320931A (ja) * | 1997-05-20 | 1998-12-04 | Sony Corp | 情報再生装置および再生方法 |
JP2003272304A (ja) * | 2002-03-13 | 2003-09-26 | Toshiba Corp | 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 |
JP2003323770A (ja) * | 2002-05-01 | 2003-11-14 | Sony Corp | 復号装置及び復号方法、並びに情報再生装置及び情報再生方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000222737A (ja) * | 1999-01-29 | 2000-08-11 | Sony Corp | 光ディスク評価装置、光ディスクの評価方法及び光ディスクの製造方法 |
US7194674B2 (en) * | 2002-07-29 | 2007-03-20 | Sharp Kabushiki Kaisha | Adaptive waveform equalization for viterbi-decodable signal and signal quality evaluation of viterbi-decodable signal |
WO2004105032A2 (en) * | 2003-05-21 | 2004-12-02 | Koninklijke Philips Electronics N.V. | Method of storing rll encoded information to an optical disc with control of the frequency of the information with respect to the cut-off frequency of the optical system |
JP2007317313A (ja) * | 2006-05-26 | 2007-12-06 | Tdk Corp | 光ディスク、光ディスクの再生方法及びシステム |
-
2007
- 2007-05-08 JP JP2007123003A patent/JP4748100B2/ja not_active Expired - Fee Related
-
2008
- 2008-04-28 WO PCT/JP2008/001110 patent/WO2008139712A1/ja active Application Filing
- 2008-05-05 US US12/115,040 patent/US8189443B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03144969A (ja) * | 1989-10-31 | 1991-06-20 | Internatl Business Mach Corp <Ibm> | 回転式磁気記憶装置およびそのデータ誤り率決定方法 |
JPH08195037A (ja) * | 1995-01-20 | 1996-07-30 | Pioneer Electron Corp | 光ディスク及び記録情報再生装置の評価装置 |
JPH10320931A (ja) * | 1997-05-20 | 1998-12-04 | Sony Corp | 情報再生装置および再生方法 |
JP2003272304A (ja) * | 2002-03-13 | 2003-09-26 | Toshiba Corp | 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 |
JP2003323770A (ja) * | 2002-05-01 | 2003-11-14 | Sony Corp | 復号装置及び復号方法、並びに情報再生装置及び情報再生方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2008282431A (ja) | 2008-11-20 |
US8189443B2 (en) | 2012-05-29 |
JP4748100B2 (ja) | 2011-08-17 |
US20080279066A1 (en) | 2008-11-13 |
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