A method of enhancing picture quality of a video signal is disclosed. The
method comprises the steps of generating an interpolated base frame
image; receiving a first previously decoded difference picture; receiving
a second previously decoded difference picture; generating a combined
motion compensated difference surface; and generating a temporally
interpolated enhanced picture based upon the interpolated base frame
image and the combined motion compensated difference surface. A circuit
for enhancing picture quality of a video signal is also disclosed. The
circuit comprising a base decoder generating a base image of a standard
definition picture; a temporal predictive interpolator coupled to the
base decoder and generating an interpolated block; and a summing circuit
coupled to the temporal predictive interpolator. The summing circuit
preferably adds the interpolated block and a difference block.