Optical recording method, optical recorder, and optical recording medium
US7336580B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2002 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Mar 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0062
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The object of the present invention is to provide an optical recording method for recording data in an optical recording medium, which can reduce jitter of a reproduced signal even in the case where data are recorded at a plurality of linear recording velocities.The optical recording method according to the present invention can record data at a plurality of linear recording velocities or a continuously changing linear recording velocity and a recording waveform for modulating a recording beam includes a direct current section and a recording pulse section. Data are recorded so that the intensity Pbi of the direct current section and the intensity Pw of the recording pulse section satisfy PbiH/PbiL<1 and (PbiH/PwH)/(PbiL/PwL)<1 where PwL and PbiL are Pw and Pbi when data are to be recorded at a linear recording velocity VL and PwH and PbiH are Pw and Pbi when data are to be recorded at a linear recording velocity VH higher than the linear recording velocity VL and satisfying 1.1≦VH/VL. As a result, it is possible to reduce jitter of a reproduced signal even in the case where data are recorded over a wide range of linear velocities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.