JP2006202386A - 相変化型光記録媒体の検査方法、相変化型光記録媒体装置 - Google Patents
相変化型光記録媒体の検査方法、相変化型光記録媒体装置 Download PDFInfo
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- JP2006202386A JP2006202386A JP2005011883A JP2005011883A JP2006202386A JP 2006202386 A JP2006202386 A JP 2006202386A JP 2005011883 A JP2005011883 A JP 2005011883A JP 2005011883 A JP2005011883 A JP 2005011883A JP 2006202386 A JP2006202386 A JP 2006202386A
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- recording medium
- optical recording
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- 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
- G11B7/006—Overwriting
- G11B7/0062—Overwriting strategies, e.g. recording pulse sequences with erasing level used for phase-change media
-
- 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
- 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
- G11B7/0055—Erasing
- G11B7/00557—Erasing involving phase-change media
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
【解決手段】 照射されるレーザパワーの差で結晶−非結晶の相変化が生じる材料からなる記録層を設けてなる相変化型光記録媒体に対して、常温において、再生信号のジッターが最小となるレーザパワーより一定値大きなレーザパワーで同一トラックを繰り返しオーバーライトする。そして、一定回数オーバーライト後の再生信号のジッター値を測定して、その測定されたジッター値が基準値以下かどうかを判定することにより、再生信号の品質劣化を評価する。
【選択図】 図5
Description
Claims (6)
- 照射されるレーザパワーの差で結晶−非結晶の相変化が生じる材料からなる記録層を設けてなる相変化型光記録媒体に対して、常温において、再生信号のジッターが最小となるレーザパワーより一定値大きなレーザパワーで同一トラックを繰り返しオーバーライトし、
一定回数オーバーライト後の再生信号のジッター値を測定し、
前記測定されたジッター値が基準値以下かどうかを判定する
ことを特徴とする相変化型光記録媒体の検査方法。 - 前記ジッターが最小となるレーザパワーより10〜15%大きいレーザパワーでオーバーライトする
ことを特徴とする請求項1に記載の相変化型光記録媒体の検査方法。 - 前記一定回数オーバーライト後のジッター値の前記基準値が15%である
ことを特徴とする請求項1又は2に記載の相変化型光記録媒体の検査方法。 - 前記オーバーライト時の前記レーザパワーの記録パワーレベルと消去パワーレベルの比率が一定である
ことを特徴とする請求項1〜3のいずれか1項に記載の相変化型光記録媒体の検査方法。 - 前記オーバーライト回数が1000回である
ことを特徴とする請求項1〜4のいずれか1項に記載の相変化型光記録媒体の検査方法。 - 前記相変化型光記録媒体は、DVD−RW又はDVD+RWメディアである
ことを特徴とする請求項1〜5のいずれか1項に記載の相変化型光記録媒体の検査方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005011883A JP4069928B2 (ja) | 2005-01-19 | 2005-01-19 | 相変化型光記録媒体の検査方法、相変化型光記録媒体装置 |
US11/311,237 US7489607B2 (en) | 2005-01-19 | 2005-12-20 | Method of inspecting a phase-change type optical recording medium |
TW095100088A TW200638404A (en) | 2005-01-19 | 2006-01-02 | Inspection method for phase transition type optical recording medium, and phase transition type optical recording medium |
KR1020060005349A KR20060084379A (ko) | 2005-01-19 | 2006-01-18 | 상변화형 광 기록 매체의 검사 방법 |
CNB200610005934XA CN100412970C (zh) | 2005-01-19 | 2006-01-19 | 检查相位变化类型光记录介质的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005011883A JP4069928B2 (ja) | 2005-01-19 | 2005-01-19 | 相変化型光記録媒体の検査方法、相変化型光記録媒体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006202386A true JP2006202386A (ja) | 2006-08-03 |
JP4069928B2 JP4069928B2 (ja) | 2008-04-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005011883A Expired - Fee Related JP4069928B2 (ja) | 2005-01-19 | 2005-01-19 | 相変化型光記録媒体の検査方法、相変化型光記録媒体装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7489607B2 (ja) |
JP (1) | JP4069928B2 (ja) |
KR (1) | KR20060084379A (ja) |
CN (1) | CN100412970C (ja) |
TW (1) | TW200638404A (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200703325A (en) * | 2005-03-29 | 2007-01-16 | Hitachi Maxell | Method for evaluating optical recording medium, optical recording medium, and information-recording/reproducing apparatus |
JP2008165942A (ja) * | 2007-01-05 | 2008-07-17 | Tdk Corp | 光記録媒体の評価方法、評価装置及び評価システム |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2757585B2 (ja) | 1991-06-12 | 1998-05-25 | 三菱化学株式会社 | 相変化型光学的情報記録媒体の製造時の抜取検査方法 |
JPH0969246A (ja) * | 1995-08-30 | 1997-03-11 | Canon Inc | 光学的情報記録再生装置 |
US6022605A (en) * | 1997-02-28 | 2000-02-08 | Kao Corporation | Optical recording medium and recording/erasing method therefor |
TW382703B (en) * | 1997-03-14 | 2000-02-21 | Hitachi Ltd | Signal recording method, phase difference detecting circuit, and information apparatus |
JP4418114B2 (ja) * | 1999-03-19 | 2010-02-17 | パナソニック株式会社 | 光学的情報記録方法およびそれを用いた光学的情報記録装置 |
US6611481B1 (en) * | 1999-04-28 | 2003-08-26 | Matsushita Electric Industrial Co., Ltd. | Optical recording/reproducing apparatus |
EP1349158A4 (en) * | 2000-11-27 | 2007-07-25 | Tdk Corp | OPTICAL RECORDING MEDIUM |
JP2002251841A (ja) | 2001-02-23 | 2002-09-06 | Ricoh Co Ltd | 光ディスク検査装置 |
JP2002352517A (ja) * | 2001-05-28 | 2002-12-06 | Sony Corp | 光ディスク装置、光ディスク装置のクロック生成方法及び光ディスク装置の光量設定方法 |
WO2003088221A1 (fr) * | 2002-04-03 | 2003-10-23 | Matsushita Electric Industrial Co., Ltd. | Dispositif d'information optique, support de stockage optique, dispositif d'inspection de support de stockage optique, et procede d'inspection de stockage optique |
JP3753105B2 (ja) * | 2002-07-10 | 2006-03-08 | ティアック株式会社 | 光ディスク装置 |
US7190647B2 (en) * | 2003-04-01 | 2007-03-13 | Hitachi Maxell, Ltd. | Information recording method and medium having optimum erasing power |
-
2005
- 2005-01-19 JP JP2005011883A patent/JP4069928B2/ja not_active Expired - Fee Related
- 2005-12-20 US US11/311,237 patent/US7489607B2/en not_active Expired - Fee Related
-
2006
- 2006-01-02 TW TW095100088A patent/TW200638404A/zh not_active IP Right Cessation
- 2006-01-18 KR KR1020060005349A patent/KR20060084379A/ko not_active Application Discontinuation
- 2006-01-19 CN CNB200610005934XA patent/CN100412970C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
TW200638404A (en) | 2006-11-01 |
CN100412970C (zh) | 2008-08-20 |
KR20060084379A (ko) | 2006-07-24 |
CN1822149A (zh) | 2006-08-23 |
US7489607B2 (en) | 2009-02-10 |
TWI338893B (ja) | 2011-03-11 |
JP4069928B2 (ja) | 2008-04-02 |
US20060158986A1 (en) | 2006-07-20 |
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