Computer graphics processing and selective visual display system – Image superposition by optical means
Reexamination Certificate
1998-10-05
2001-01-30
Hjerpe, Richard A. (Department: 2774)
Computer graphics processing and selective visual display system
Image superposition by optical means
Reexamination Certificate
active
06181303
ABSTRACT:
BACKGROUND OF THE INVENTION
Using polarization to encode a pair of left and right images for stereo vision is not new. Prior art employed two basic methods to have both images overlap so as to result in one viewable stereo image. The methods are: (1) a projection system that projects the two orthogonally-polarized images onto a screen and (2) a beamsplitter in a large box-like enclosure with one image coming through the beamsplitter and the other image being placed on the side of the box and reflected out, as illustrated in FIG.
1
. Both methods require a large space and are not compatible with use at a video workstation or at a console.
SUMMARY OF THE INVENTION
Using two liquid crystal display panels stacked together into a flat compact unit and a dedicated processor to produce the appropriate video signals to drive the panels, the flat panel three-dimensional display unit produces a pair of polarization-encoded left and right images and exhibits them as a stereo image pair that is viewable through a pair of standard polarized glasses. This eliminates the bulky box-like setup or the need to project onto a screen.
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Johnson John L.
Kirsch James C.
Bush Freddie M.
Chang Hay Kyung
Hjerpe Richard A.
Laneau Ronald
The United States of America as represented by the Secretary of
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