Decoder network

Claim 1

A DECODER NETWORK FOR PRODUCING AN OUTPUT VOLTAGE IDENTIFYING A BINARY-CODED SIGNAL, REPRESENTING A BIT OF INFORMATION, APPLIED THERETO, SAID DECODER NETWORK COMPRISING: A SIGNAL GENERATOR FOR GENERATING A CARRIER SIGNAL AT A PREDETERMINED FREQUENCY; A BALANCED MODULATOR RECEPTIVE OF THE BINARY-CODED SIGNAL AND COUPLED TO SAID GENERATOR FOR RECEIVING SAID CARRIER SIGNAL, SAID MODULATOR MODULATING SAID CARRIER SIGNAL IN SUCH A MANNER WITH THE BINARY-CODED SIGNAL AS TO PRODUCE A BI-PHASED CARRIER SIGNAL, ONE PHASE CORRESPONDING TO ONE VOLTAGE LEVEL OF THE BINARY-CODED SIGNAL AND THE OTHER PHASE CORRESPONDING TO THE OTHER VOLTAGE LEVEL OF THE BINARY-CODED SIGNAL; MULTITAPPED DELAY MEANS RECEPTIVE OF SAID MODULATED CARRIER SIGNAL AND ADAPTED TO SIMULTANEOUSLY AND RESPECTIVELY PRODUCE THE PHASED PORTIONS OF SAID MODULATED CARRIER AT A PLURALITY OF TAPS; CORRELATION MEANS COUPLED TO SAID DELAY MEANS AT THE TAPS THEREOF FOR COMBINING SAID PHASED PORTIONS IN SUCH A MANNER AS TO SIMULTANEOUSLY PRODUCE A PLURALITY OF VOLTAGE LEVELS OF DIFFERENT AMPLITUDE, EACH VOLTAGE LEVEL CORRESPONDING TO A DIFFERENT CODING SEQUENCE FOR THE BIARY-CODED SIGNAL, THE VOLTAGE LEVEL OF GREATEST MAGNITUDE CORRESPONDING TO THE CODING SEQUENCE OF THE SIGNAL APPLIED TO THE DECODER NETWORK; AND OUTPUT MEANS COUPLED TO SAID CORRELATION MEANS FOR COMPARING SAID PLURALITY OF VOLTAGE LEVELS, SAID OUTPUT MEANS INCLUDING A PLURALITY OF OUTPUT TERMINALS, ONE FOR EACH OF SAID VOLTAGE LEVELS, AND OPERABLE IN RESPONSE TO SAID COMPARISON TO PRODUCE AN OUTPUT VOLTAGE ONLY AT THE OUTPUT TERMINAL CORRESPONDING TO THE VOLTAGE LEVEL HAVING THE GREATEST AMPLITUDE, THEREBY TO IDENTIFY THE APPLIED BINARY-CODED SIGNAL.