Patent ID: 7386125
Filing Date: 2008-06-10
Classification: H04N

Abstract:
1. A method of deterring the copying of visual images displayed on a movie screen, comprising: displaying the images on the screen using a system where the displayed spectrum forming individual images is a combination of more than three primary color components, varying the relative amplitudes of the more than three primary color components to represent the color spectrum of the visual images being displayed in a manner that is metameric to the human eye and therefore does not vary the perceived color representation of the images displayed on the screen, and recording the images displayed on the screen with a recording device having a spectral sensitivity function that is different from that of the human eye and not a linear combination thereof, thereby producing a visible color distortion in the recorded images, wherein varying the amplitudes of the more than three primary color components alters the spectral content of the visual images in a manner that is metameric and thus imperceptible to the human eye but not metameric to the video camera having a spectral sensitivity different from the spectral sensitivity of the human eye, and wherein color distortion is perceptible to the human eye in reproductions of the recorded images.