Method for the control of an image display screen using the principle of the modulation of duration of light emission and display device implementing the method
US6034654A · kind A · utility
1Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Feb 20, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Feb 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for the control of a display screen whose pixels are cells producing light is used to minimize certain image defects known as excess brightness defects caused by major variations in the number of cells activated. For this purpose, the invention operates on the sub-division of the activation times of the cells during a given cycle time to reduce a time during which cells, selected as a function of their luminance level, are the only ones to be activated. The disclosed method can be applied especially to the control of alternating type plasma panels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.