Motion filter for digital television system

Details Motion filter for digital television system Motion filter for digital television system

H - Electricity

04

N

H04N 7/12 (2006.01) H04N 5/14 (2006.01) H04N 5/21 (2006.01) H04N 5/44 (2006.01) H04N 7/26 (2006.01) H04N 7/46 (2006.01)

Patent

CA 2123914

2123914 9310628 PCTABS00022 A method and apparatus for processing fields (XA, XB, XC) of a video signal that are to be combined (28) into a frame, compressed and communicated over a digital communications system. The processing technique increases the spatial correlation between pixels at a cost of slightly reduced resolution in area of the frame where there is movement. The method employs a motion detector (14, 16, 18) to separate moving and non-moving areas of the frame. A simple combination of lines from a first field and second field can be used in static areas. In moving areas, a digital filter (20) is applied to the fields to increase correlation in the resulting field. A digital compression technique such as vector quantization is applied to the resulting frame-based signal.

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