APPARATUS FOR GENERATING SUPERIMPOSED TELEVISION IMAGES

摘要

A device for generating a superimposed television image over a background television image, includes a detector and a video mixer for generating the superimposed television image by altering the signal strength of the background television image in response to a signal from a superimposed television image source. An audio component of the superimposed television signal, can be combined by open air mixing with the audio component of the television signal.