Method to improve moving picture quality of PDPs affected by dynamic falsecontour artifacts

The deterioration of the picture quality of displayed moving pictures cause d by dynamic false contour artifacts is a serious impediment to obtaining g ood picture quality on PDPs (plasma display panels). The artifacts arise fr om the sub-field method used to represent the grayscale. We propose a combi nation of two methods, time-compression of emission and weighted division o f upper signal bits, to improve picture quality. Each technique has a separ ate and important role in the improvement of quality. We also propose an ad ditional technique for reducing the frequency with which the artifacts appe ar. The proposed methods were evaluated br, computer simulation and subject ive testing. The results showed that these methods significantly improved t he moving picture quality of a PDP and provided a picture of acceptable qua lity for viewing on an HDTV receiver. A high-quality 42-in.-diagonal PDP-HD TV receiver, the "Nagano Model," was developed using the methods proposed.