After the responding module 203 obtains the preset adjustment value of ambient light intensity, the responding module 203 calculates the difference value between the ambient light intensity value detected by the ambient light sensor and the preset adjustment value of ambient light intensity, and controls the display screen to respond according to the difference value.

For example, the ambient light intensity value detected by the ambient light sensor is 80, the preset adjustment value of ambient light intensity obtained by the responding module 203 is 10, and the difference value calculated is 70. The responding module 203 determines the ambient light intensity according to the difference value 70. For example, the electronic device determines the ambient light intensity as 70. Then the responding module 203 controls the display screen to respond according to the difference value, such as reducing brightness of the display screen.

In detail implementation, each of the above modules may be implemented as a separate entity, or may be implemented in any combination as one or several entities.