Patent ID: 6670994
Filing Date: 2003-12-30
Classification: G09G,H04N

Abstract:
A video signal processing device comprising:a video frame Input source; a first buffer coupled to the video frame input source, the first buffer adapted to receive odd-numbered video lines from the video frame input, producing a first video frame independent of the even-numbered video lines; a second buffer coupled to the video frame input source, the second buffer adapted to receive even-numbered video lines from the video frame input, producing a second video frame independent of the odd-numbered video lines; and a field scaler coupled to the first and the second buffers, adapted to produce an output video frame for a video display having a first size by second between the first video frame and the second video frame, the first video frame and the second video frame having a second size, wherein the field scaler produces the output video frame by copying the selected one of the first video frame and the second video frame to the video output frame unchanged if a ratio between the first size and the second size is below a predetermined value.