Method and apparatus for setting brightness of a display screen

An electronic device, comprising:

• a backlighted display screen;
• a light sensor installed on a surface on the electronic device;
• and
• a processor configured to:
• acquire by the light sensor a measured brightness of ambient light having an actual ambient brightness at where the electronic device is located;
• detect whether the light sensor faces away from a light source in the environment;
• when it is detected that the light sensor does not face away from the light source,
• determine a reference backlight brightness level according to a backlight brightness level-setting function comprising a correspondence between actual ambient brightness levels and backlight brightness levels, by using the measured brightness as actual ambient brightness;
• and
• set an actual backlight brightness of the backlighted display screen to the reference backlight brightness level;
• and
• when it is detected that the light sensor faces away from the light source, set the actual backlight brightness of the backlighted display screen at a level different from the reference backlight brightness level.

A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of an electronic device having a backlighted display screen, causes the electronic device to:

• acquire by a light sensor on the electronic device a measured brightness of ambient light having an actual ambient brightness at where the electronic device is located;
• detect whether the light sensor faces away from a light source in the environment;
• when it is detected that the light sensor does not face away from the light source,
• determine a reference backlight brightness level according to a backlight brightness level-setting function comprising a correspondence between actual ambient brightness levels and backlight brightness levels, by using the measured brightness as actual ambient brightness;
• and
• set an actual backlight brightness of the backlighted display screen to the reference backlight brightness level;
• and
• when it is detected that the light sensor faces away from the light source, set the actual backlight brightness of the backlighted display screen at a level different from the reference backlight brightness level.