Method for dynamically modulating driving current of backlight module
US7312781B2 · kind B2 · utility
1Cited by
2References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 3, 2004 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Sep 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to the brightness distribution of a previous frame, the driving current of the backlight module dynamically varies. When the concentration of the brightness distribution is toward high brightness, the backlight module increases its luminous intensity. On the contrary, when the concentration of the brightness distribution is toward low brightness, the backlight module decreases its luminous intensity. We can set the luminous modulation period of the backlight module to be synchronized with a vertical scanning period or several vertical scanning periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.