Determining the lighting conditions surrounding a device
First Claim
1. A method for determining the lighting conditions surrounding a device comprising a transmissive color LCD (liquid crystal display) display (1), said method comprising measuring within said device the intensity of light passing through said LCD display (1) from outside of said device, while no backlight is switched on, wherein said light is color filtered by at least part of said LCD display (1) with a known color distribution
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Accused Products
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.
48 Citations
35 Claims
- 1. A method for determining the lighting conditions surrounding a device comprising a transmissive color LCD (liquid crystal display) display (1), said method comprising measuring within said device the intensity of light passing through said LCD display (1) from outside of said device, while no backlight is switched on, wherein said light is color filtered by at least part of said LCD display (1) with a known color distribution
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17. A device comprising:
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a transmissive color LCD (liquid crystal display) display (1) for presenting information to a user;
a photometrical sensor (2,3) placed within said device at a location to which light can penetrate from the outside of said device through said LCD display (1), which photometrical sensor (2,3) measures the intensity of light entering said device which was color filtered by said LCD display (1); and
processing means (4,6) for adjusting said LCD display (1) to provide a known color filtering for measurements by said photometrical sensor (2,3). - 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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Specification