Display projection method and apparatus and optical input...

Details Display projection method and apparatus and optical input... Display projection method and apparatus and optical input...

G - Physics

03

B

G03B 21/28 (2006.01) G02B 27/00 (2006.01) G03B 21/132 (2006.01) H04N 5/74 (2006.01) H04N 9/31 (2006.01)

Patent

CA 2162690

The present invention relates to a compact display projector and a method of using it to project images under the control of image generating equipment, such as computer and television systems. An optical input device (10) is built into the projector (12) to enable optical control signals directed onto the projected image, to be discriminated for causing the image generating equipment to modify the projected image. A positionally adjusted mirror device (40) is disposed in optical alignment with the optical input device to reflect the optical control signals back thereto, whereby the optical input device is readily aligned with the projected image to monitor it for the occurrence of any optical control signals.

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