DATA SUPERIMPOSITION
Use of computer generated red, green and blue data in video applications. Data superimposition over a video signal is carried out by high quality color decoders which convert analog or digital video signals to RGB signals. The computer generated data is genlocked to the video source and superimposed on the decoded RGB signal by using a special key or strobe input. The signal can then be re-encoded to re-establish the original video signal format, now including the computer data (graphics, text, etc.)
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