Patent ID: 7554605
Filing Date: 2009-06-30
Classification: H04N

Abstract:
1. A video signal transformation method for adapting display devices to heterogeneous signal formats, comprising the step of: receiving a source video signal by a first receiving device; registering the source video signal in a frame buffer within the first receiving device and providing the same source video signal to a detection device coupled to the first receiving device and a first display device; detecting the formats of the source video signal and the first display device by the detection device; receiving the source video signal from the frame buffer by a multiplexer, and outputting the same source video signal to a processing device or a second receiving device based on the detection result of the detection device; transforming the source video signal into the format of the first display device by the processing device for using the transformed video signal as the input of the first display device while the source video signal is not conformed with the format of the first display device, wherein the format of the first display device is an interlace scan video signal; and forming the interlace scan video signal by a scan line selecting means for selecting the designated scan lines from the source video signal.