| 摘要 |
The invention relates to an analog video interface for a digital video display, comprising an analog video input (31) for receiving at least one analog video signal with composite or separate horizontal and vertical deflection signals; digitizing means (36) for digitizing said at least one analog video signal; means (41) for generating a basic clock signal having a frequency at least n times a desired video frequency, where n >/= 1; means (41, 43) for generating control signals for the digital display and a sampling clock signal for the digitizing means in synchronization with the basic clock signal. According to the invention, said display further comprises means (32) for determining the actual video frequency of the analog video signal on the basis of said received signals; said means for generating the basic clock signal comprising a programmable frequency synthesizer means responsive to said determining means for synthesizing the basic clock of a frequency at least n times said determined actual video frequency, where n >/= 1. |
