Method for controlling optical power level
US7414934B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Jun 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06808
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling an optical power level includes the steps of a) regularly increasing a control value of a driving signal generator for driving a pickup unit adapted to output an optical power, b) checking a driving signal of the driving signal generator according to the increasing control value, and c) setting a control value at which the driving signal begin to be generated as an offset value for setting up an optical power. Therefore, an offset value for a reference optical power needed for setting up laser power levels for individual operation modes is more accurately calculated, and the laser power levels for individual operation modes are optimally controlled based on the offset value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.