Patent ID: 6421095
Filing Date: 2002-07-16
Classification: H04N

Abstract:
A mix/effects bank comprising:at least three keyers, each providing a shaped video output from a video input and a key input; a current priority combiner having a plurality of inputs ranked in order from highest priority to lowest priority; a next priority combiner having a plurality of inputs ranked in order from highest priority to lowest priority; a crosspoint router coupled between the keyers and the combiners having the shaped videos as inputs and providing a current set of outputs and a next set of outputs coupled to the inputs of the current priority combiner and next priority combiner respectively; a transition mixer coupled to receive the outputs from the combiners as inputs and providing an output; and a program/preview switch coupled to receive the output from the combiners at one pole and the output from the transition mixer at the other pole, and having outputs coupled to a program video bus and a preview video bus.