Chromaticity adjustment for LED video screens
US9240135B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Jun 12, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Nov 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0693
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for color matching/chromaticity adjustment for a video screen, display panel, module or other component that comprises different batches of light emitting diodes (“LEDs”). The system and method do not alter the panel/module's RGB gain when adjusting saturation, luminance and hue. This way, the panels and modules can achieve a desired/targeted white balance. As such, different batches of LEDs can be set to the same RGB ratios to achieve proper color matching. Thus, the system and method can mix different batches of LEDs in the same video screen or wall, yet achieve uniformity across the screen/wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.