Method and apparatus to determine ambient light using a camera
First Claim
Patent Images
1. A method, comprising:
- getting shutter speed and gain of a camera, wherein the shutter speed and the gain are set automatically by the camera; and
determining ambient light using the shutter speed and the gain.
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Abstract
A system includes a camera that may be used for multiple applications including an application to measure the ambient light. The camera may include an automatically set a gain or an aperture as well as a shutter speed. The shutter speed and the gain or aperture from the camera may be used to determine the ambient light. Brightness of a display may be adjusted based on the ambient light.
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Citations
20 Claims
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1. A method, comprising:
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getting shutter speed and gain of a camera, wherein the shutter speed and the gain are set automatically by the camera; and
determining ambient light using the shutter speed and the gain. - View Dependent Claims (2, 3, 4, 5)
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6. A system to measure ambient light, comprising:
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an image capturing device configured to set a shutter speed and a gain, the image capturing device having an interface to provide the shutter speed and the gain;
logic to determine shutter speed frequency using the shutter speed;
logic to determine logarithm of the gain; and
logic to determine the ambient light using the shutter speed frequency and the logarithm of the gain. - View Dependent Claims (7, 8, 9)
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10. A system, comprising:
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a processor;
a display coupled to the processor; and
a camera coupled to the display, the camera including an automatic exposure control to set shutter speed, wherein the processor is to determine ambient light using the shutter speed. - View Dependent Claims (11, 12, 13)
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14. A tangible medium storing machine-accessible, wherein the data, when accessed, results in a machine performing a method comprising:
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getting shutter speed and gain or aperture automatically set by a camera coupled to a display; and
adjusting brightness of the display using the shutter speed and one of the gain and the aperture. - View Dependent Claims (15, 16, 17)
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18. A method, comprising:
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getting shutter speed and aperture from an image capturing device configurable to automatically set the shutter speed and opening of the aperture;
determining shutter speed frequency using the shutter speed;
determining logarithm of the aperture;
determining ambient light using the shutter speed frequency and the logarithm of the aperture; and
adjusting brightness of a display coupled to the image capturing device based on the determined ambient light. - View Dependent Claims (19, 20)
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Specification