Patent ID: 7324158

Claim:
A video signal processing apparatus for generating both a progressive video signal and an interlace video signal to at least one video display apparatus, the video signal processing apparatus comprising: a main picture processor, for generating a corresponding progressive main picture signal according to video signals transmitted from a video memory, a progressive signal stream being further generated from the progressive main picture signal via a predetermined video processing procedure; an interlace video signal generating module, comprising at least one line buffer, for receiving the progressive signal stream and selectively storing the progressive signal stream in an odd and even alternative way to generate an interlace signal stream; and a video encoder, for encoding, according to a video standard of the video display apparatus, the progressive signal stream and the interlace signal stream respectively to be the progressive video signal and the interlace video signal in compliance with the video standard of the video display apparatus; whereby the video signal processing apparatus provides both the progressive video signal and the interlace video signal to the video display apparatus for video displaying.