Patent ID: 6115159
Filing Date: 2000-09-05
Classification: H04N

Abstract:
Apparatus for providing an interface between a triaxial cable and a fiber optic cable for transmission of television signals, the apparatus comprising:a first converter circuit coupled between the triaxial cable and the fiber optic cable operative to convert a first electrical signal having a plurality of first television signals in a frequency division multiplex format received from the triaxial cable to an optical output signal, the first converter circuit comprising:a plurality of first bandpass filters coupled in parallel to receive the first electrical signal, each filter operative to pass one of the first television signals;a first summing circuit coupled to each first bandpass filter output and operable to sum the filtered first television signals to provide a first composite electrical signal; andan optical transmitter coupled to the first summing circuit for converting the first composite electrical signal to the optical output signal; anda second converter circuit coupled between the fiber optic cable and the triaxial cable operative to convert an optical input signal received from the fiber optic cable to a second electrical signal wherein the triaxial cable is coupled at one end to the apparatus and is coupled at the opposite end to a camera and wherein the apparatus further comprises a power control circuit coupled to the one end of the triaxial cable and operable to control power to the camera in response to a detect signal received from the first converter circuit.