US 12,266,288 B1
Luminance control circuit and luminance control method
Tung-Ying Wu, Tainan (TW)
Assigned to HIMAX TECHNOLOGIES LIMITED, Tainan (TW)
Filed by HIMAX TECHNOLOGIES LIMITED, Tainan (TW)
Filed on Mar. 28, 2024, as Appl. No. 18/621,000.
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 2320/0626 (2013.01); G09G 2320/0666 (2013.01); G09G 2330/021 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A luminance control circuit, comprising:
a first converter, configured to convert a gray level result of an image data into at least one luminance of the image data;
an average pixel level (APL) calculator, coupled to the first converter, and configured to generate an APL value according to the at least one luminance;
a luminance adjusting circuit, coupled to the APL calculator and the first converter, and configured to generate at least one adjusting value according to the APL value and adjust the at least one luminance of the image data to be at least one adjusted luminance using the least one adjusting value; and
a second converter, coupled to the first converter, and configured to convert the at least one adjusted luminance into an adjusted gray level result of the image data,
wherein the adjusted gray level result is negative correlated with the APL value.