| 摘要 |
<p>A digital cinema anti-piracy system includes a modulator configured to convert an input signal to a desired disruptive frequency and to analyze a brightness, B, of each input pixel in an input frame of the signal, the modulator for determining at least the amount of brightness Bj of each pixel to be displayed in each frame j of a set of N frames, wherein the average of all the brightness values Bj in the N set of frames is substantially equal to B, and N is substantially equal to the number of frames output for each input frame. A brightness of a pixel in a second region Bf(j) can be displayed 'out of phase' with the brightness Bj to create a disruptive effect which is distinguishable from the first flicker effect.</p> |
