Ambient light sensing method and system and electronic equipment

Abstract

The invention provides a sensing method and system for sensing the intensity of the ambient light in an environment in which an electronic device is located, and also provides an electronic device including the sensing system. The sensing method provided by the invention comprises the steps: inserting one or more pure color images during normal operation of a display screen, and then responding tothe current ambient light with a plurality of light sensing elements to obtain a plurality of pieces of first data when the pure color image appears on the display screen; responding to the current ambient light through the plurality of light sensing elements to obtain a plurality of pieces of second data when the display screen displays a normal image; and finally performing the mathematical operation according to the first data and the second data to obtain the light intensity value of the true ambient light. The method is high in sensitivity to ambient light.

Description

technical field [0001] The present invention relates to the technical field of photoelectric sensing, and more specifically, to an ambient light sensing method, sensing system and electronic equipment. Background technique [0002] Displayable electronic devices such as mobile phones generally need to adjust the brightness of their display screens during use, so that the display screens can have brightness that meets user needs when they are used in different ambient lights. At present, in order to realize the full-screen design of electronic devices, the ambient light sensing system is usually set under the permeable display to sense the brightness of the ambient light. In this case, the light source of the display panel may interfere Sensing of ambient light. [0003] In the prior art, one or more black frames are usually inserted into the display screen of the display panel, and then the ambient light is sensed under the completely black screen, so as to avoid the influe...

AI Technical Summary

Problems solved by technology

However, it takes a certain sensing time for the ambient light sensing system to sense ambient light, so the display duration of each full black screen should be at least longer than the sensing time, so that the environment will not be affected by the sudden jump out of the full black screen The normal sensing of light, and the long-term black screen will affect the normal use of the display by the user

[0004] In addition, in an environment where the ambient light changes rapidly, the above-mentioned sensing time may all fall during the low-level period of the ambient light switch control signal. At this time, the sensed value may be much lower than the actual value, and the above-mentioned sensing time may also be all During the high level period of the ambient light switch control signal, the sensed value at this time may be much larger than the real value

Therefore, even if the ambient light is sensed under a black screen, it may not be the real ambient light brightness value in an application environment where the ambient light changes rapidly.

Images