US 11,927,476 B2
Method, device, and display device for detecting ambient light with a plurality of ambient light sensors
Yaqiong Long, Wuhan (CN); Tengteng Shi, Wuhan (CN); and Xiaoyan Niu, Wuhan (CN)
Appl. No. 17/600,139
Filed by WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Wuhan (CN)
PCT Filed Aug. 10, 2021, PCT No. PCT/CN2021/111674
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2023/000407, PCT Pub. Date Jan. 26, 2023.
Claims priority of application No. 202110829940.1 (CN), filed on Jul. 22, 2021.
Prior Publication US 2023/0031752 A1, Feb. 2, 2023
Int. Cl. G09G 3/34 (2006.01); G01J 1/42 (2006.01); G09G 3/20 (2006.01)
CPC G01J 1/4204 (2013.01) [G01J 1/4228 (2013.01); G09G 3/20 (2013.01); G09G 2360/144 (2013.01); G09G 2360/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for detecting ambient light, comprising:
S1: obtaining brightness information of the ambient light;
S2: determining a brightness interval of the ambient light according to the brightness information of the ambient light; and
S3: determining a reference sensor basing on a preset correspondences between a plurality of ambient light sensors and different brightness intervals, and outputting a brightness signal of a current ambient light according to a preset conversion relationship of output signals of the reference sensor to the brightness signal of a current ambient light;
wherein sizes of photosensitive areas of the ambient light sensors are inversely proportional to values of the corresponding brightness intervals,
in step S3, the preset conversion relationship is defined as:

OG Complex Work Unit Math
S is the output brightness signal of the current ambient light, n is a number of the ambient light sensors, ki is a gain coefficient of an i-th ambient light sensor, and Si is an output signal of the i-th ambient light sensor.