System to determine the color of ambient light for adjusting the illumination characteristics of a display
First Claim
1. A reflection device for adjusting display device output illumination characteristics relative to the color of ambient light, comprising:
- a target surface having achromatic and flat reflectivity to ambient light, and defining an aperture through which light output from the display device can be seen by a user and visually compared to the color of ambient light reflected from the target surface.
1 Assignment
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Accused Products
Abstract
A system for correcting an output device for the effects of reflected ambient illumination comprises a reflection device of known reflectivity. The color display memory stores a first graphical interface and a second graphical interface. The first graphical interface displays a range of intensities of outputs that the display device can generate. The second graphical interface displays a range of hues that the display device can generate. The reflection device has a target surface which defines an aperture. The ambient light reflecting from the target surface is compared to the first graphical interface and to the second graphical interface by viewing the interfaces through the aperture. The system receives a first input of an intensity of the first graphical interface that appears to match the ambient illumination reflected from the reflection device; the system then receives a second input of a hue of the second graphical interface that appears to match the ambient illumination reflected from the reflection device. The system determines the intensity and hue of the ambient illumination reflected from the output device by matching the intensity and hue of the ambient illumination reflected from the reflection device with the output of the output device. The system then adjusts the outputs of the output device to compensate for the reflected ambient illumination.
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Citations
30 Claims
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1. A reflection device for adjusting display device output illumination characteristics relative to the color of ambient light, comprising:
- a target surface having achromatic and flat reflectivity to ambient light, and defining an aperture through which light output from the display device can be seen by a user and visually compared to the color of ambient light reflected from the target surface.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A reflection device for calibrating display device output illumination characteristics relative to the color of ambient light, comprising:
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a target having an achromatic reflective target surface and an aperture; and a handle extending from the target for holding the target parallel and proximal to the display device, whereby the color of display device output light passing through the aperture can be compared with the adjacent color of ambient light reflected by the target surface surrounding the aperture. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of making a reflection device for comparing the characteristics of illumination output from a display device with the characteristics of ambient light, comprising the steps of:
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providing a target having a target surface with predetermined reflectivity characteristics; forming an aperture through the target; providing a handle for holding the target surface parallel and proximal to the display device; and attaching the target to the handle. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification