Patent ID: 6297814
Filing Date: 2001-10-02
Classification: A63F,G02B,G03B,H04N

Abstract:
An image display apparatus comprising:a concave projection screen extending about an axis and including a central screen area and side screen areas defined at opposing lateral sides of said central screen area, said concave projection screen being viewable from a concave side thereof;image projecting means for projecting images based on image data for display onto a rear convex surface of said concave projection screen, said image projecting means projecting from a projector position substantially centrally aligned with said central screen area; andcontrol means for horizontally correcting image position data from a three dimensional environment for images projected onto respective ones of said side screen areas of said concave projection screen by multiplying said image position data by an inverse of a horizontal distortion ratio for each of said side screen areas to precompress horizontally said image position data, and producing said image data for display therefrom, whereby horizontal distortion of the images projected on said side screen areas is at least partially corrected for.