System and method for transmitting video from multiple video cameras over a single multiple pair, twisted pair cable

A twisted pair-to-coax balun “T” device for use in a video system having a plurality of video cameras, which comprises:

• a coaxial connector for electrical connection to a respective coaxial cable coupled to a corresponding video camera and receiving thereon an unbalanced video signal from the corresponding video camera;
• a first connector and a second connector, the first connector and the second connector for electrical connection to an electrical cable containing multiple twisted pairs of wires;
• a plurality of pairs of first and second transmission lines, each pair of first and second transmission lines being electrically connected to the first connector and the second connector;
• and
• a balun, the balun including an input electrically coupled to the coaxial connector and an output, the balun converting the unbalanced video signal received by the twisted pair-to-coax balun “T” device to a balanced video signal on the output, the output of the balun including a first leg and a second leg, the first leg being electrically coupled to the first transmission line of at least one of the pairs of first and second transmission lines of the plurality of pairs of transmission lines, the second leg being electrically coupled to the second transmission line of the at least one of the pairs of first and second transmission lines of the plurality of pairs of transmission lines.

A method of transmitting video signals from a plurality of video cameras in a video system, which comprises the steps of:

• generating by the plurality of video cameras unbalanced video signals;
• receiving the unbalanced video signals over coaxial cables by a plurality of twisted pair-to-coax balun “T” devices, each twisted pair-to-coax balun “T” devices including a balun having an input and an output and a connector electrically coupled to the balun output;
• converting the unbalanced video signal received by a respective twisted pair-to-coax balun “T” device to a balanced video signal and providing the balanced video signal on the connector;
• and
• electrically connecting the connector to an electrical cable containing multiple twisted pairs of wires to receive on at least one of the twisted pairs of wires the respective balanced video signal from the corresponding twisted pair-to-coax balun “T” device to which the electrical cable is electrically connected.