Information recording method, information recording device, and recording medium containing a program, with recording marks formed by emitting light
US7512050B2 · kind B2 · utility
1Cited by
4References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Dec 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00736
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A first trial write process obtains an optimum recording power of a test pattern even with respect to data having different rules for the recording waveforms corresponding n type data length sets, and a second trial write process using this optimum recording power obtains optimum pulse width or optimum pulse edge position separately for each data length set. Based on the optimum recording power and optimum recording waveform obtained by these trial write processes, recording operation is performed so as to form all the data lengths with satisfactory accuracy, thereby making it possible to obtain a proper reproduced signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.