Donald J Imsand

40062910, Feb 1, 1977

Feb 22, 1974

5/445002

Donald J. Imsand - Shalimar FL

H04N 956

358 92

Method and apparatus for producing a three dimensional television image by presenting stereoptican pairs of images to the viewers eyes. One of the stereoptican partners is presented most of the time while the second stereoptican partner is flashed on and off rapidly. Under the proper conditions with the second stereoptican partner being flashed on for a suitably short period of time at the proper repetition rate, the viewer is not consciously aware of its presence and effectively perceives the picture as a three dimensional image.

45675139, Jan 28, 1986

Nov 2, 1983

6/547897

Donald J. Imsand - Fort Walton Beach FL

H04N 1302

358 92

Methods and apparatus for producing a television image having the illusion of three dimensional depth. This method is compatible with television broadcast standards and standard home TV receivers without additional home apparatus. The basic methodology is to alternate video from two stereoscopic TV cameras, using a synchronized video switch, at an alternation rate to allow the human visual perception process to perceive the two images as a single binocularly fused image. However, this basic method has an inherent flicker problem related to the "limit of binocular fusion" of the human visual perception process. The flicker problem is eliminated through video processing techniques that produce globally converged alternating binocular video. The method is also compatible with display mediums other than television.