This publication describes a user equipment (UE), such as a smartphone, that supports automatic display brightness control by using multiple sensors and interpreting the context in which a user utilizes the UE. The UE may automatically control the display brightness using different methods. In one embodiment, the UE may measure the ambient light (lux) using a frontfacing ambient-light sensor (ALS) and a rear-facing ALS. In one embodiment, in addition to the front-facing and rear-facing ALSs and/or front and rear cameras, the UE may utilize edge ALSs. In one embodiment, in addition to the front-facing and the rear-facing ALSs, the UE may use a combination of other sensors, such as proximity sensors, a radar-based sensor, or accelerometers to determine the orientation of the UE (e.g., laying on a flat surface) and ignore measurements from one of the ALSs. In one embodiment, in addition to ALSs and/or other sensors, the UE may also use the context in which the user is using the UE, such as what application software the user is currently using. In one embodiment, the UE may use an advanced sensor-fusion algorithm that takes raw red, green, and blue (RGB) data from the front and rear cameras, combines them with the UE’s orientation, estimates the level of ambient lux, and automatically controls the display brightness without using ALSs.
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Hong, Jung Ook; Zhang, Yi; and Lehmer, Andrew, "Automatic Display Brightness Control with Multiple Sensors", Technical Disclosure Commons, (October 17, 2019)