Patent ID: 8284217

Claim:
A method for randomly and dynamically generating a dynamic pattern index incorporated in a dynamic index system received video data and processed each sub-pixel datum of the video data by a pseudo-random number generating unit of the dynamic index system to alternately form dithering data of three dimensions of pixel, line, and frame, comprising: transmitting the video data to the dynamic index system; dynamically generating a substantially random number by the pseudo-random number generating unit; selecting m bits of the substantially random number as at least one target adapted to as a position code of a dynamic pattern index matrix; repeating the step of selecting the m bits of the substantially random number as at least one target adapted to as a position code of a dynamic pattern index matrix for M times so as to guide the acquired N sets of m bits as the position code of the dynamic pattern index matrix; and generating the two-dimensional dynamic pattern index matrix (S×T) according to the position code by operating of the pseudo-random number generating unit, wherein the pseudo-random number generating unit comprises a plurality of linear feedback shift registers, and the linear feedback shift registers receive the video data as an initial value of the linear feedback shift registers and the linear feedback shift registers produce the substantially random number by a way of the operation of XOR with the initial value.