Patent ID: 6483447
Filing Date: 2002-11-19
Classification: G09G,H03L

Abstract:
A method of recovering a plurality of pixel data elements encoded in a display data signal of an analog display signal, said analog display signal also containing synchronization signals associated with said display data signal, wherein said plurality of pixel data elements are encoded in said display data signal using a source clock signal, said synchronization signals not containing the timing information corresponding to the encoding of each of said plurality of pixel data elements individually, said method being performed in a display system, said method comprising the steps of:(a) receiving said display data signal in said display system; (b) generating a sampling clock signal; (c) examining said display data portion to determine the deviations of said sampling clock signal from said source clock signal; (d) adjusting the phase of said sampling clock signal according to said deviations; and (e) sampling said display data signal according to said sampling clock with the phase adjusted in step (d), wherein said sampling generates one of said plurality of pixel data elements, whereby the phase adjustment of step (d) enables said plurality of pixel data elements to be recovered accurately by the sampling of step (e).