Phase-shift keying receiver utilizing the phase shift carrier for synchronization

Claim 1

COMMUNICATION MEANS COMPRISING FIRST MEANS FOR RECEIVING PHASE MODULATED CARRIER SIGNALS; SECOND MEANS CONNECTED TO SAID FIRST MEANS HAVING TWO OUTPUTS; SAID SECOND MEANS INCLUDING MEANS FOR PRODUCING SAID PHASE MODULATED CARRIER SIGNALS AT SAID FIRST OUTPUT, AND MEANS FOR PRODUCING SAID PHASE MODULATED SIGNALS WITH A 180 DEGREE PHASE DELAY AT SAID SECOND OUTPUT; THIRD MEANS CONNECTED TO SAID SECOND OUTPUT FOR GENERATING FIRST AND SECOND CARRIER FREQUENCY STANDARDS PHASE DISPLACED FROM ONE ANOTHER 180 DEGREES; FIRST PHASE COMPARISON MEANS FOR COMPARING SAID FIRST OUTPUT SIGNAL WITH SAID FIRST CARRIER FREQUENCY STANDARD TO GENERATE A SIGNAL ONLY WHEN SAID FIRST CARRIER FREQUENCY AND FIRST OUTPUT SIGNAL ARE IN PHASE; SECOND COMPARISON MEANS FOR COMPARING SAID FIRST OUTPUT SIGNAL WITH SAID SECOND CARRIER FREQUENCY STANDARD TO GENERATE A SIGNAL ONLY WHEN SAID SECOND CARRIER FREQUENCY AND SAID FIRST OUTPUT SIGNAL ARE IN PHASE; DEMODULATOR MEANS CONNECTED TO SAID FIRST AND SECOND PHASE COMPARISON MEANS AND CONTROLLED ONLY BY THE COMPARISON MEANS GENERATING A SIGNAL TO INDICATE AN IN PHASE CONDITION FOR GENERATING A DEMODULATED OUTPUT SIGNAL INDICATIVE OF THE PHASE MODULATION STATE OF SAID CARRIER SIGNALS RECEIVED BY SAID FIRST MEANS COMPRISING AMPLITUDE INTERLOCK MEANS COUPLED TO THE OUTPUTS OF SAID FIRST AND SECOND PHASE COMPARISON MEANS FOR COMPARING THE RELATIVE AMPLITUDE OF THE SIGNALS OUTPUT THEREFROM, AND MEANS COUPLED TO THE OUTPUT OF SAID AMPLITUDE INTERLOCK MEANS FOR GENERATING OUTPUT SIGNALS REPRESENTING THE INFORMATION RECEIVED IN SAID PHASE MODULATED CARRIER SIGNAL.