Ambient light adaptive displays

摘要

An electronic device may include a display having an array of display pixels and having display control circuitry that controls the operation of the display. The display control circuitry may adaptively adjust the display output based on ambient lighting conditions. For example, in cooler ambient lighting conditions such as those dominated by daylight, the display may display neutral colors using a relatively cool white. When the display is operated in warmer ambient lighting conditions such as those dominated by indoor light sources, the display may display neutral colors using a relatively warm white. Adapting to the ambient lighting conditions may ensure that the user does not perceive color shifts on the display as the user's vision chromatically adapts to different ambient lighting conditions. Adaptively adjusting images in this way can also have beneficial effects on the human circadian rhythm by displaying warmer colors in the evening.

主权项

1. A method for displaying images on an array of display pixels in a display that emits display light, comprising:
with display control circuitry, gathering ambient light information from a light sensor; determining an adaptation factor that weights a user's chromatic adaptation to the display light relative to the user's chromatic adaptation to ambient light based on the ambient light information; determining a neutral color based on the adaptation factor; and adjusting input pixel values based on the neutral color to obtain adapted input pixel values.