Patent ID: 7542509
Filing Date: 2009-06-02
Classification: G09G,H04N

Abstract:
1. A method of compressing computer video into n-bit packets, comprising: examining the color of each video pixel within selected video frames; determining which of the following conditions applies for each pixel in each selected frame: a first condition wherein a current pixel is unchanged versus a pixel at the same screen position in the previously selected frame; a second condition wherein the current pixel is unchanged versus a pixel directly to the left of the current pixel in the current frame; a third condition wherein the current pixel is unchanged versus a pixel directly above the current pixel in the current frame; a fourth condition wherein a sequential series of x pixels, beginning with the current pixel, are comprised only of colors from a two-color set and x is at least (n-4); and a fifth condition wherein each of the first, second, third and fourth conditions do not apply; (a) if any of said first, second or third conditions apply, determining which of said conditions applies for the longest number of sequential pixels beginning with the current pixel, and (n-3) payload bits indicating the number of sequential pixels, beginning with the current pixel, that are unchanged versus pixels at the same screen positions in the previously selected frame;