Method and video processing unit for processing a video signal

摘要

A method and an apparatus for processing a video signal is provided for processing an input video signal comprising a plurality of subsequent video images. An additional image is superimposed on the input video signal in accordance with a control signal for producing a mixed video signal. Said control signal indicates the image area for superimposing the additional image. The mixed video signal is subsequently processed by a processing circuit in accordance with the control signal. The control signal indicates a different processing for separate image areas. In that way, a video signal, which has additional image data superimposed thereon may be processed without the occurrence of artifacts originating from a uniform processing of the mixed video signal.