Color television indexing control utilizing intensity and velocity modulation techniques

Claim 1

IN A COLOR TELEVISION IMAGE-REPRODUCING SYSTEM INCLUDING A CATHODE RAY TUBE HAVING A LUMINESCENT SCREEN COMPRISING A PLURALITY OF VERTICALLY ORIENTED PHOSPHOR STRIPS CAPABLE OF EMITTING LIGHT OF DIFFERENT COLORS WHEN IMPINGED BY AN ELECTRON BEAM, AND A PLURALITY OF INDEX STRIPS ALIGNED WITH SAID PHOSPHOR STRIPS AND CAPABLE OF PRODUCING SIGNALS WHEN IMPINGED BY AN ELECTRON BEAM FROM WHICH AN INDEXING WAVE MAY BE DERIVED, AND IN WHICH AN ELECTRON BEAM IS DEFLECTED HORIZONTALLY IN A SERIES OF VERTICALLY SPACED SUBSTANTIALLY PARALLEL LINES TRANSVERSE TO SAID PHOSPHOR AND INDEX STRIPS, A SYSTEM FOR CONTROLLING SAID ELECTRON BEAM COMPRISING: MEANS FOR HORIZONTALLY DEFLECTING SAID BEAM TRANSVERSELY OF SAID PHOSPHOR AND INDEX STRIPS NORMALLY AT A SUBSTANTIALLY UNIFORM RATE; MEANS FOR VARYING THE INTENSITY OF SAID BEAM; MEANS FOR MODULATING SAID INDEXING WAVE IN PHASE AND AMPLITUDE BY COLOR WAVE; MEANS FOR IMPRESSING A FIRST GIVEN AMPLITUDE OF SAID COLOR CONTROL WAVE UPON SAID BEAM INTENSITY VARYING MEANS TO VARY SAID BEAM INTENSITY, THEREBY TENDING TO PRODUCE A PHASE SHIFT OF SAID INDEXING WAVE IN A FIRST SENSE; AND MEANS FOR IMPRESSING A SECOND GIVEN AMPLITUDE OF SAID COLOR CONTROL WAVE UPON SAID DEFLECTING MEANS TO VARY THE HORIZONTAL BEAM DEFLECTION RATE, THEREBY TENDING TO PRODUCE A PHAS SHIFT OF SAID INDEXING WAVE IN A SECOND SENSE OPPOSITE TO SAID FIRST SENSE, SAID FIRST AND SECOND GIVEN AMPLITUDES OF SAID COLOR CONTROL WAVE BEING SO RELATED THAT SUBSTANTIALLY NO RESULTANT PHASE SHIFT OF SAID INDEXING WAVE IS PRODUCED.