Apparatus and method for driving laser diode for recording data on optical disk
US7417932B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Nov 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for driving a laser diode for a recording of data. According to the method, pre-stored variables corresponding to respective manufacturers and respective recording pits of the optical disk are checked. A main pulse based on the checked variables and a sub pulse having a prescribed width are generated. The sub pulse is generated at a prescribed time prior to generating the main pulse. A driving signal for driving a LD to record data is generated upon receiving the main pulse and the sub pulse. Therefore, data recording operations are performed using the driving signal without overpower as in the conventional Mode 1 (e.g., Orange 1), that can take less computation and less time to form recording pits at a desired time/size for a recording period of time as in the conventional Mode 2 (e.g., Orange 2), which can result in improve recording quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.