Title: Video image rotating apparatus
Application Number: 98813001 Application Date: 1998.10.01
Publication Number: 1286869 Publication Date: 2001.03.07
Approval Pub. Date: 2004.09.22 Granted Pub. Date: 2004.09.22
International Classifi-cation: H04N7/00
Applicant(s) Name: 360 TV. Inc. Address:
Inventor(s) Name: Franklin C. Gribschaw;Paul W. Lang;Biljana Tadic-G
Attorney & Agent: feng pu
Abstract:
    An image rotating apparatus (10) presents a projected video image upon a rear projection screen (26) that is rotated extremely rapidly about a vertical axis which exactly bisects the picture in the vertical plane. The rotational rate is such that an entire audience, regardless of their position about the apparatus (10), can view the projected video image simultaneously. The video image rotating apparatus (10) utilizes light valve technology to create red, green, and blue images from an analog composite video signal, and a Phillips prism (14) that aligns the images produced by the light valves (12a-12c) for projection through an optical system. The image produced by the light valves (12a-12c) is rotated, either mechanically or electronically, in synchronization with rotation of the projection screen (26). The projection screen (26) itself eliminates the need for a separate shutter by both expanding the projected image generally parallel to the screen
Time: 10