High dynamic range display devices
First Claim
Patent Images
1. A display controller, the controller connectible to:
- receive image data defining a desired image; and
, control light outputs of pixels in a first array of pixels and light transmission of pixels of a second array of pixels illuminated by light emitted by the first array of pixels, the controller configured to;
generate control signals for the first array of pixels to yield an approximation of the desired image on the second array of pixels;
determine light intensities of the approximation at pixels of the second array of pixels; and
generate control signals for the pixels of the second array of pixels based at least in part on differences between the determined light intensities and the desired image at the pixels of the second array of pixels.
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Abstract
A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.
122 Citations
28 Claims
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1. A display controller, the controller connectible to:
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receive image data defining a desired image; and
,control light outputs of pixels in a first array of pixels and light transmission of pixels of a second array of pixels illuminated by light emitted by the first array of pixels, the controller configured to;
generate control signals for the first array of pixels to yield an approximation of the desired image on the second array of pixels;
determine light intensities of the approximation at pixels of the second array of pixels; and
generate control signals for the pixels of the second array of pixels based at least in part on differences between the determined light intensities and the desired image at the pixels of the second array of pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A display comprising:
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a first array of pixels connected to emit individually-controlled amounts of light onto a second array of pixels, the second array of pixels connected to pass individually-controllable portions of the light; and
,a controller connected to;
control the pixels of the first and second arrays of pixels, the controller configured to control the pixels of the first array of pixels to provide on the second array of pixels an approximation of an image specified by image data;
determine a difference between the image and the approximation of the image at individual pixels of the second array of pixels; and
control the pixels of the second array of pixels to modulate the approximation of the image according to the corresponding determined differences. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A method of displaying an image on a display comprising a first array of pixels which emit light onto a second array of pixels, the method comprising:
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controlling the first array of pixels to yield a pattern of light which approximates an image specified by image date on the second array of pixels;
determining a difference between the pattern of light at a pixel of the second array of pixels and a corresponding location of the image specified by the image data; and
,controlling the pixel of the second array of pixels based on the determined difference. - View Dependent Claims (25, 26, 27, 28)
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Specification