Determining the lighting conditions surrounding a device
First Claim
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1. A method comprising:
- measuring within a device comprising a transmissive color liquid crystal display for presenting information to a user, the intensity of light passing through said liquid crystal display from outside of said device, while no backlight is switched on, wherein said light is color filtered by at least part of said liquid crystal display with a known color distribution.
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Abstract
The invention relates to a method for determining the lighting conditions surrounding a device comprising a transmissive color LCD display 1. In order to obtain a detailed information on the lighting conditions, it is proposed that the method comprises measuring within the device the intensity of light passing through the LCD display 1 from outside of the device, while no backlight is switched on. The light is color filtered by at least part of the LCD display 1 with a known color distribution. The invention equally relates to a device comprising means for carrying out the proposed method.
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Citations
37 Claims
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1. A method comprising:
measuring within a device comprising a transmissive color liquid crystal display for presenting information to a user, the intensity of light passing through said liquid crystal display from outside of said device, while no backlight is switched on, wherein said light is color filtered by at least part of said liquid crystal display with a known color distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device comprising:
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a transmissive color liquid crystal display for presenting information to a user; a photometrical sensor placed within said device at a location to which light can penetrate from the outside of said device through said liquid crystal display, which photometrical sensor measures the intensity of light entering said device which was color filtered by said liquid crystal display; and a processor for adjusting said liquid crystal display to provide a known color filtering for measurements by said photometrical sensor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A device comprising:
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means for presenting color display information to a user; photometrical means placed within said device at a location to which light can penetrate from the outside of said device through said means for presenting color display information to a user, which photometrical means are measuring the intensity of light entering said device which is color filtered by said means for presenting color display information to a user; and means for adjusting said means for presenting color display information to a user to provide a known color filtering for measurements by said photometrical means. - View Dependent Claims (37)
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Specification