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AssigneeApple Inc.
InventorsAleksandar Pance, Duncan Kerr, Brett Bilbrey, Brandon Dean Slack, Reese T. Cutler
Estimating the term…
There are provided systems, devices and methods for operating a light source to match a white point of ambient light. In one embodiment, a light control system is provided. The light control system includes a light source and a light sensor. The light sensor is configured to operate in conjunction with the light source to provide a visual effect. A controller is electrically coupled to the light source and the light sensor and configured to determine the intensity and color of light to which the light sensor is exposed and dynamically adjust the output of the light source to match the determined intensity and color of light to which the light sensor is exposed.
A method of operating a back lighting system of a keyboard comprising:
The method of claim 15 comprising time division multiplexing actuation of the light sensor and the light source.
The method of claim 15, wherein actuating a multicolor light source comprises pulse width modulating an input to the multicolor light source.
The method of claim 15 wherein determining the white point of sensed light comprises determining an intensity of the sensed light at discrete wavelength ranges.
The method of claim 18 wherein the discrete wavelength ranges comprise a wavelength range that includes red light, a wavelength range that includes green light and a wavelength range that includes blue light.
A backlit keyboard comprising:
Dependencies are inferred from the claim text.