Patent ID: 6377629
Filing Date: 2002-04-23
Classification: H03F,H04N

Abstract:
A video color signal transmission system comprising:a plurality of sources of sets of video color signals, each set selectable for transmission and including a (R), (G), and (B) video color signal, a plurality of transmitters, one of each for one of each of said (R), (G) and (B) video color signals of a selected said set, each said transmitter including: signal balancing circuitry coupled to each said transmitter, thereby providing balanced (R), (G) and (B) video color signal outputs, a cross switcher in circuit with each said signal balancing circuitry, thereby providing as a set, balanced (R), (G) and (B) video color signal outputs, a transmission cable comprising: a plurality of twisted pair communications lines, each twisted pair communications line having a first end and a second end, said first end of each said twisted pair communications line coupled to said cross switcher and said second end of each said twisted pair communications line providing a balanced one of said (R), (G) and (B) video color signal outputs, with a twist rate of each of said twisted pair communications lines effecting a different signal delay, whereby any of said (R), (G) and (B) color signals of a selected set may be selectively applied to any of said plurality of twisted pair communications lines; and, a plurality of receivers for each said (R), (G) and (B) video color signal, each said receiver comprising: a balanced input coupled to said second end of a respective said communications line of said transmission cable, an amplifier and balanced to single-ended circuitry coupled to each said second end of each of said twisted pair communications lines, and a single-ended monitor output couplable from said balanced to single-ended circuitry.