Method for measuring intensity of ambient light at electronic device, electronic device, and chip

An electronic device, comprising:

• a screen configured to be dimmed at a dimming frequency;
• an ambient light sensor, configured to collect mixed light including ambient light and screen leakage light;
• and
• a processor, configured to:
• obtain a direct current (DC) mean value of the mixed light;
• obtain a DC mean value of the screen leakage light;
• and
• determine a DC mean value of the ambient light by subtracting the DC mean value of the screen leakage light from the DC mean value of the mixed light;
• wherein the DC mean value of the ambient light is indicative of an intensity of the ambient light.

A chip, comprising:

• a memory;
• and
• a processor, wherein the memory is coupled with the processor, the memory is configured to store program instructions, and the processor is configured to invoke the program instructions stored in the memory, to cause the chip to:
• collect mixed light including ambient light and screen leakage light;
• obtain a direct current (DC) mean value of the mixed light;
• obtain a DC mean value of the screen leakage light;
• and
• determine a DC mean value of the ambient light by subtracting the DC mean value of the screen leakage light from the DC mean value of the mixed light;
• wherein
• the DC mean value of the ambient light is indicative of an intensity of the ambient light.