Dual-stage high-contrast electronic image display
First Claim
1. A display apparatus, comprising:
- a first display disposed in a first plane, having a first area and configured to generate a first image based upon first image data;
a second display disposed in a second plane, having a second area and configured to generate a second image based upon second image data; and
a projection device for projecting the first image substantially into the second plane thereby superimposing a projected image and the second image.
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Accused Products
Abstract
Electronic displays are provided which can reproduce image data with high contrast ratios and a gray scale range comparable to conventional X-ray film viewed on a light box. One such display includes a rear low-resolution LCD or DLP display which projects an image onto a high-resolution LCD display. In such embodiments, the mechanical and optical registration between the two displays is not critical. Therefore, modulation transfer function and distortion of the projection optics are not critical. Accordingly, the brightness of the inventive display can be maximized with high power lamps and high aperture projection optics. Because the display has a high dynamic range, the need for dynamic range compression algorithms is reduced.
157 Citations
32 Claims
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1. A display apparatus, comprising:
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a first display disposed in a first plane, having a first area and configured to generate a first image based upon first image data;
a second display disposed in a second plane, having a second area and configured to generate a second image based upon second image data; and
a projection device for projecting the first image substantially into the second plane thereby superimposing a projected image and the second image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display method, comprising the steps of:
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generating a first image on a first display based upon first image data;
generating a second image on a second display based upon second image data; and
projecting the first image substantially into the second plane thereby superimposing a projected image and the second image. - View Dependent Claims (15, 16, 17)
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18. A display apparatus, comprising:
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a filter for filtering high spatial frequency data and low spatial frequency data from image data;
a first liquid crystal display panel disposed in a first plane, having a first area and configured to generate a first image based upon low spatial frequency data received from the filter;
a second liquid crystal display panel disposed in a second plane parallel to the first plane, having a second area larger than the first area and configured to generate a second image based upon high spatial frequency data received from the filter;
a light source for illuminating a first side of the first liquid crystal display panel; and
a projection device disposed proximate a second side of the first liquid crystal display panel for projecting the first image and focusing the first image on the second plane. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A display apparatus, comprising:
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a filter for filtering high spatial frequency data and low spatial frequency data from image data;
a reflective digital light processing device having a first area and configured to generate a first image based upon low spatial frequency data received from the filter;
a light source for illuminating a first side of the reflective digital light processing device;
a transmissive liquid crystal display panel having a second area larger than the first area and configured to generate a second image based upon high spatial frequency data received from the filter; and
a projection device for projecting a first image from the reflective digital light processing device and for focusing the first image into a plane within which the transmissive liquid crystal display panel is disposed. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. A display method, comprising the steps of:
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filtering high spatial frequency data and low spatial frequency data from image data;
displaying a first image based upon the low spatial frequency data;
displaying a second image on a liquid crystal display based upon the high spatial frequency data; and
projecting the first image onto the liquid crystal display such that pixel data from the first image are registered with corresponding pixel data from the second image.
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Specification