Compatible color television

Claim 1

A COMPATIBLE COLOR TELEVISION SYSTEM COMPRISING: (A) MEANS FOR PRODUCING TWO COLOR-SEPARATION IMAGES REPRESENTING RELATIVELY LONG AND RELATIVELY SHORT VISIBLE WAVELENGTHS OF LIGHT FROM A SCENE BEING TELEVISED; (B) MEANS TO CAUSE SAID COLOR-SEPARATION IMAGES TO BE INDIVIDUALLY SCANNED SIMULTANEOUSLY AND IN SYNCHRONISM ACCORDING TO A GIVEN PERIODIC PROGRAM TO PRODUCE TWO VIDEO SIGNALS EACH REPRESENTATIVE, AT ANY INSTANT, OF THE AMOUNT OF LIGHT OF A DIFFERENT ONE OF SAID RELATIVELY LONG AND SHORT WAVELENGTHS OF LIGHT EMANATING FROM THE ELEMENTAL AREA OF THE SCENE BEING SCANNED AT ANY INSTANT; AT LEAST THE VIDEO SIGNAL REPRESENTING THE SHORTER WAVELENGTHS OF LIGHT CONTAINING A FREQUENCY RANGE REQUIRED FOR TRANSMISSION ABOUT A FREQUENCY RANGE REQUIRED FOR TRANSMISSION AND REPRODUCTION OF A MONOCHROME TELEVISION IMAGE; (C) MEANS TO PRODUCE A SUBCARRIER WHOSE FREQUENCY IS AN ODD MULTIPLE OF HALF THE LINE FREQUENCY OF THE SYSTEM; (D) MEANS TO MODULATE THE VIDEO SIGNAL REPRESENTATIVE OF THE LONGER WAVELENGTHS OF LIGHT ON SAID SUBCARRIER; (E) MEANS TO GENERATE A CARRIER ASSOCIATED WITH A PRESELECTED TELEVISION CHANNEL; (F) MEANS TO PRODUCE SYNCHRONIZING SIGNALS OF SAID SUBCARRIER FREQUENCY DISPLACED IN PHASE FROM SAID SUBCARRIER BY A PREDETERMINED AMOUNT WHICH WILL CAUSE A THREE-COLOR TELEVISION RECEIVER MATRIX TO PRODUCE COLOR-RELATED OUTPUT SIGNALS IN THE COLOR RANGE OF RELATIVELY LONG WAVELENGTHS OF LIGHT; AND (G) MEANS TO MODULATE ON THE CARRIER SAID SYNCHRONIZING SIGNALS AND, SIMULTANEOUSLY, AS THE COLOR-CHARACTERIZING VIDEO SIGNALS THEREON, SIGNALS REPRESENTATIVE OF SAID SHORTER WAVELENGTHS OF LIGHT AND REPRESENTATIVE TO THE SUBCARRIER MODULATED BY SIGNALS REPRESENTATIVE OF SAID LONGER WAVELENGTHS OF LIGHT.