Stereophonic system

Claim 1

IN A TELEVISION SYSTEM, A MEANS FOR CONVEYING STEROPHONIC INFORMATION COMPRISING: A TELEVISION TRANSMITTER INCLUDING A SOURCE OF PERIODIC SYNCHRONIZING SIGNALS FOR THE TELEVISION SYSTEM, A SOURCE OF L SIGNALS, A SOURCE OF R SIGNALS, MATRIXING MEANS FOR DERIVING FROM THE L AND R SIGNALS FIRST AND SECOND COMBINATION SIGNALS, MEANS FOR DERIVING A SUBCARRIER WAVE HAVING A FREQUENCY DIFFERING FROM THE FREQUENCY OF SAID PERIODIC SYNCHRONIZING SIGNALS AND HARMONICS THEREOF AND GREATER THAN THE HIGHEST FREQUENCY IN SAID FIRST COMBINATION SIGNAL, MEANS FOR AMPLITUDE MODULATING THE SUBCARRIER WAVE WITH SAID SECOND COMBINATION SIGNAL SO AS TO PRODUCE SECOND COMBINATION SIGNAL SIDEBANDS IN SUCH MANNER THAT THE SUBCARRIER WAVE IS SUPPRESSED, MEANS FOR DERIVING A PILOT CARRIER WAVE HAVING A FREQUENCY THAT IS GREATER THAN THE HIGHEST FREQUENCY PRODUCED BY SAID AMPLITUDE MODULATION MEANS AND WHICH CAN BE COMBINED WITH SAID PERIODIC SYNCHRONIZING SIGNALS OR HARMONICS THEREOF TO PRODUCE A WAVE HAVING THE SAME FREQUENCY AS THE SUPPRESSED SUBCARRIER WAVE, AND MEANS FOR APPLYING SAID FIRST COMBINATION SIGNAL, THE SECOND COMBINATION SIGNAL SIDEBANDS, SAID PILOT CARRIER WAVE, AND SAID SYNCHRONIZING SIGNALS TO A SINGLE TRANSMISSION PATH.