US 9,812,053 B2
Reducing LCD power consumption by preferentially dimming individual colors
Lawrence E. Knepper, Leander, TX (US); and Yagiz Can Yildiz, Austin, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Mar. 7, 2016, as Appl. No. 15/62,809.
Prior Publication US 2017/0256192 A1, Sep. 7, 2017
Int. Cl. G09G 5/10 (2006.01); G09G 3/20 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/2003 (2013.01) [G09G 3/32 (2013.01); G09G 2320/0626 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for reducing power consumption in a display device, comprising:
receiving pixel data representing an image frame, the pixel data encoding colors of pixels in the image frame in accordance with a color model comprising a plurality of color components;
analyzing the pixel data, the analyzing including:
producing a respective histogram of brightness levels in the image frame for each of the color components of the color model; and
determining, for each color component, a respective backlight control value based on the histogram for the color component;
sending, for each color component, the backlight control value for the color component to a respective backlight controller for the color component; and
controlling, for each color component, intensity for each of a plurality of illuminating elements of the display device corresponding to the color component based on the backlight control value for the color component.