Programmable transducer device

A programmable transducer device, comprising:

• a sensor that provides a transducer output signal on a transducer output connection;
• means for providing a reference signal;
• and
• a detector circuit connected to said transducer output connection to receive a superposition signal, wherein said detector circuit also receives said reference signal and compares said superposition signal and said reference signal to determine if said superposition signal includes a control input signal, and provides a detector output signal indicative of whether or not said control input signal is superimposed on said transducer output signal to form said superposition signal.

A programmable transducer device, comprising:

• a sensor that provides a transducer output signal on a transducer output connection;
• a reference signal generating circuit that provides a reference signal;
• and
• a detector circuit connected to said transducer output connection to receive a superposition signal, wherein said detector circuit also receives said reference signal and compares said superposition signal and said reference signal to determine if said superposition signal includes a control input signal, and provides a detector output signal indicative of whether or not said superposition signal includes control input signal.