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Digital video signal processing is one result of the fast progress in NMOS-VLSI techniques. The attractions of using digital data processing methods in an analog application field are the availability of CAD tools for the design of digital ICs and the integration of digital filter functions. Besides the key components such as microcomputers, A/D, and D/A converters, the digital filter techniques are the most important functions in this application field. It is demonstrated that digital signal processing is not only restricted to amplitude modulated video signals, but also that frequency modulated signals can be processed and methods for FM modulation and demodulation have been developed.