| abstract |
The existing TV standards have a field frequency of 50 or 59.94 or 60Hz. When such pictures are displayed, line flicker can arise in case of special picture content or large area flicker can arise in case of bright pictures, in particular on large screens. Such artefacts can be reduced when a display upconversion is performed in the receiver whereby the field frequency is doubled. However, simple upconversion algorithms like AABB can introduce new motion artefacts. To avoid such artefacts a motion compensation is carried out in the receiver. nField memories (SPUFM, FM), a motion estimator (ME) and a motion compensated interpolator (MCI) are used for doubling the field frequency, together with spatial noise reduction means (SF) and recursive temporal noise reduction means (TF) including a predictor (PRED), to perform motion compensated upconversion and noise reduction. |