Recording method for dye-based recordable DVD medium and recording apparatus
US7729223B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2007 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Feb 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/246
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording method for dye-based recordable DVD medium which includes recording shortest marks on a recording layer primarily containing an organic dye using a simple rectangular wave pulse; recording marks each having the second shortest or still longer mark length using one pulse of which the front and rear edges are highly energized for a given time; and controlling the optical energy for irradiating rear edge or backward of the pulse with a cooling pulse to be 0.1 mW or less for a given time, wherein when the recording power of the front and rear edges of the respective pulses is represented by P1 and the recording power of intermediate pulse between the pulse front edge and the pulse rear edge is represented by P2, P1/P2 is set to be greater when P1 is a low power, and P1/P2 is set to be smaller when P1 is a high power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.