MY125549A - Method and appratus for writing optical recording media - Google Patents
Method and appratus for writing optical recording mediaInfo
- Publication number
- MY125549A MY125549A MYPI97005831A MYPI9705831A MY125549A MY 125549 A MY125549 A MY 125549A MY PI97005831 A MYPI97005831 A MY PI97005831A MY PI9705831 A MYPI9705831 A MY PI9705831A MY 125549 A MY125549 A MY 125549A
- Authority
- MY
- Malaysia
- Prior art keywords
- optical recording
- appratus
- recording media
- function
- writing optical
- Prior art date
Links
Classifications
-
- 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
- G11B7/1263—Power control during transducing, e.g. by monitoring
-
- 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
- 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
- G11B7/00454—Recording involving phase-change effects
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
A METHOD IS DESCRIBED FOR SETTING AN OPTIMUM WRITE POWER (Po) FOR RECORDING INFORMATION ON AN OPTICAL RECORDING MEDIUM (1).FIRST A SERIES OF TEST PATTERNS IS WRITTEN ON THE MEDIUM, EACH TEST PATTERN BEING WRITTEN A DIFFERENT WRITE POWER (P).ON READING THE TEST PATTERNS, THE MODULATION (M) OF EACH READ SIGNAL (Sr) IS DETERMINED. THE MODULATIONS AS A FUNCTION OF WRITE ARE CURVE-FITTED TO AN ANALYTIC FUNCTION. THE NORMALISED DERIVATIVE OF THIS FUNCTION IS DETERMINED ANALYTICALLY IS USED TO DETERMINE THE VALUE OF THE OPTIMUM WRITE POWER FOR THE MEDIUM. (FIG. 3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96203397 | 1996-12-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
MY125549A true MY125549A (en) | 2006-08-30 |
Family
ID=8224647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI97005831A MY125549A (en) | 1996-12-06 | 1997-12-04 | Method and appratus for writing optical recording media |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0880778A1 (en) |
JP (1) | JP3956153B2 (en) |
KR (1) | KR100516813B1 (en) |
CN (1) | CN1138264C (en) |
ID (1) | ID23689A (en) |
IL (1) | IL125635A (en) |
MY (1) | MY125549A (en) |
TW (1) | TW358935B (en) |
ZA (1) | ZA9710932B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001307326A (en) | 2000-04-20 | 2001-11-02 | Teac Corp | Optical disk recorder |
CN1294576C (en) * | 2000-11-17 | 2007-01-10 | 皇家菲利浦电子有限公司 | Mothods, optical recording appts. using such methods and optical recording medium for use by methods and appts. |
JP3801000B2 (en) * | 2001-08-27 | 2006-07-26 | ティアック株式会社 | Optical disk device |
US7603027B2 (en) | 2003-10-03 | 2009-10-13 | Pioneer Corporation | Information recording medium, information recording device and method, information recording/reproducing device and method, and computer program |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3124720B2 (en) * | 1995-04-14 | 2001-01-15 | 株式会社リコー | Information recording / reproducing method, information recording / reproducing device, and information recording medium |
US5268893A (en) * | 1991-10-18 | 1993-12-07 | International Business Machines Corporation | Write power calibration utilizing least squares fit of read-back signals for moving media memory |
-
1997
- 1997-02-24 TW TW086102195A patent/TW358935B/en not_active IP Right Cessation
- 1997-12-01 IL IL12563597A patent/IL125635A/en not_active IP Right Cessation
- 1997-12-01 CN CNB971934614A patent/CN1138264C/en not_active Expired - Lifetime
- 1997-12-01 KR KR10-1998-0706046A patent/KR100516813B1/en active IP Right Grant
- 1997-12-01 JP JP52540498A patent/JP3956153B2/en not_active Expired - Lifetime
- 1997-12-01 ID IDW980059D patent/ID23689A/en unknown
- 1997-12-01 EP EP97912403A patent/EP0880778A1/en not_active Withdrawn
- 1997-12-04 ZA ZA9710932A patent/ZA9710932B/en unknown
- 1997-12-04 MY MYPI97005831A patent/MY125549A/en unknown
Also Published As
Publication number | Publication date |
---|---|
IL125635A0 (en) | 1999-04-11 |
IL125635A (en) | 2001-08-26 |
ID23689A (en) | 2000-05-11 |
KR100516813B1 (en) | 2005-11-29 |
TW358935B (en) | 1999-05-21 |
JP3956153B2 (en) | 2007-08-08 |
ZA9710932B (en) | 1999-06-04 |
KR19990082316A (en) | 1999-11-25 |
CN1214790A (en) | 1999-04-21 |
CN1138264C (en) | 2004-02-11 |
JP2000504467A (en) | 2000-04-11 |
EP0880778A1 (en) | 1998-12-02 |
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