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Apparatus for fiber optic triaxial camera interface

  • US 6,115,159 A
  • Filed: 03/27/1997
  • Issued: 09/05/2000
  • Est. Priority Date: 03/27/1997
  • Status: Expired due to Fees
First Claim
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1. 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; and

    an optical transmitter coupled to the first summing circuit for converting the first composite electrical signal to the optical output signal; and

    a 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.

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