Simultaneous bilateral televideophonic communication systems

Claim 1

A SIMULTANEOUS BILATERAL TELEVIDEOPHONIC COMMUNICATION SYSTEM COMPRISING A PLURALITY OF RECEIVING AND TRANSMITTING POSTS, EACH POST INCLUDING A CATHODE RAY TUBE ADAPTED TO FUNCTION ALTERNATELY AS A SCANNING DEVICE AND AS A KINESCOPE, A RECTICLE ON THE FACE OF SAID CATHODE RAY TUBE, A SIGNAL GENERATOR CONNECTED TO SAID TUBE FOR PRODUCING SYNCHRONIZED VOLTAGES FOR CONROLLING THE RETICLE ON THE SCREEN OF SAID TUBE AT ONE POST AND FOR CONTROLLING THE SWITCHING OF SAID TUBE FROM A SCANNING DEVICE TO A KINESCOPE AT ANOTHER POST, A PHOTOSENSITIVE DEVICE ADJACENT SAID TUBE FOR SCANNING AN IMAGE TO BE TRANSMITTED, SOUND TRANSMITTING EQUIPMENT AT EACH POST FOR PROVIDING AUDIO SIGNALS, FIRST MIXER MEANS FOR COMBINING SIGNALS FROM SAID GENERATOR AND SAID SOUND EQUIPMEMT, SECOND MIXER MEANS FOR COMBINING SIGNALS FROM SAID GENERATOR AND SAID PHOTOSENSITIVE DEVICE, AND THIRD MIXER MEANS CONNECTED TO SAID FIRST AND SECOND MIXER MEANS FOR PRODUCING A SINGLE COMPOSITE SIGNAL, A SINGLE SIGNAL TRANSMISSION MEANS BETWEEN SAID POSTS FOR TRANSMITTING SAID COMPOSITE SIGNALS, AND AMPLIFIER-SEPARATOR MEANS RESPON-