Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1993-08-13
1997-01-14
Powell, Mark R.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345 2, 348721, G06F 1500, G09G 500
Patent
active
055948430
ABSTRACT:
Apparatus and methods are described whereby a projected television image is divided into two horizontally displaced images, and an observer wears glasses to synthesize three-dimensionality from the 2-D image. Switching means are provided so that the components associated with creating the 3-D effect may be made operative or inoperative, either mechanically or electrically. One or more wedge prisms or holographic optical elements are mounted on a frame along with polarizing filters, and a lever is used to transfer these elements into and out of the beam of a projected television image. Alternatively, an electrically or acoustically activated spatial light modulator and liquid-crystal polarizers may be left in the path of the projected beam and made operative and inoperative by way of electrical signals. The invention may be used with both single-source and multi-source projected images, and may be used in conjunction with both frontal and rear projection.
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Ba Huynh
Depth Enhancement, Inc.
Powell Mark R.
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