Chromaticity adjustment for led video screens
AssigneesLighthouse Technologies (Huizhou) Limited, Lighthouse Technologies Limited
InventorKui Lai Curie Chan
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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.
Claims22
A method of performing color matching for a light emitting video screen comprising a plurality of light emitting panels arranged in a layout, said method comprising:
- generating, at a processor, master data from an output of a first light emitting panel of the plurality of light emitting panels;
- generating, at the processor, correction data for each remaining light emitting panel, the respective correction data being based on a respective output of a respective remaining light emitting panel and the master data;
- assigning, at the processor, the master data associated with the first light emitting panel to a location in the layout corresponding to a location of the first light emitting panel in the screen;
- and
- for each remaining light emitting panel, assigning, at the processor, the correction data associated with a respective remaining light emitting panel to a location in the layout corresponding to a location of the respective remaining light emitting panel in the screen.
A video processor programmed to execute a method of performing color matching for a light emitting video screen comprising a plurality of light emitting panels arranged in a layout, said video processor being programmed to:
- generate master data from an output of a first light emitting panel of the plurality of light emitting panels;
- generate correction data for each remaining light emitting panel, the respective correction data being based on a respective output of a respective remaining light emitting panel and the master data;
- assign the master data associated with the first light emitting panel to a location in the layout corresponding to a location of the first light emitting panel in the screen;
- for each remaining light emitting panel, assign the correction data associated to a respective remaining light emitting panel to a location in the layout corresponding with a location of the respective remaining light emitting panel in the screen;
- and
- perform color matching on the remaining light emitting panels in the screen based on the respective correction data.
Dependencies are inferred from the claim text.