Ambient Light Adaptive Displays with Paper-Like Appearance

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 operate the display in different modes. In a paper mode, display control circuitry may use stored spectral reflectance data to adjust display colors such that the colors appear as they would on a printed sheet of paper. In a low light mode when the ambient light level is below a threshold, the light emitted from the display may be adjusted to mimic the appearance of an incandescent light source. In a bright light mode when the ambient light level exceeds a threshold, the light emitted from the display may be adjusted to maximize readability in bright light. The target white point of the display may be adjusted based on which mode the display is operating in.

主权项

1. A method for displaying images on a display having an adjustable white point, comprising:
with a color-sensitive light sensor, determining a color and an intensity of ambient light; with display control circuitry, determining whether the intensity of ambient light is above or below a threshold; with the display control circuitry, operating the display in a first mode in response to determining that the intensity of ambient light is below the threshold, wherein operating the display in the first mode comprises adjusting the white point of the display independently of the color of ambient light; and with the display control circuitry, operating the display in a second mode in response to determining that the intensity of ambient light is above the threshold, wherein operating the display in the second mode comprises adjusting the white point of the display based on the color of ambient light.