Information recording method for recording multi-value data in optimum recording condition
US7733750B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2005 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Mar 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording method that obtains optimum recording conditions for recording multi-value data m on a recording medium includes recording a test pattern in a trial writing area of the recording medium by changing a recording power Pw and an erasing power Pe consecutively while maintaining a constant ratio between the recording power Pw and the erasing power Pe, and selecting the recording power Pw and the erasing power Pe producing reproduced results in which a reproduced signal level is substantially linear with respect to the multi-value data m, as an optimum recording power and an optimum erasing power, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.