The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2000
Filed:
Mar. 27, 1997
Eugene E Baker, Shrewsbury, MA (US);
Telecast Fiber Systems, Inc., Worcester, MA (US);
Abstract
Apparatus for providing an interface between a triaxial cable and a fiber optic cable for transmission of television signals between a camera and a camera control unit includes first and second converter circuits coupled between the triaxial cable and the fiber optic cable. The first converter circuit converts a first electrical signal received from the triaxial cable to an optical output signal. The second converter circuit converts an optical input signal received from the fiber optic cable to a second electrical signal. The first and second electrical signals each include a plurality of television signals in a frequency division multiplex format. The first converter circuit includes a plurality of bandpass filters coupled in parallel to receive the first electrical signal each of which passes one of the first television signals. The second converter circuit includes a plurality of bandpass filters coupled in parallel to receive the second electrical signal, each of which passes one of the second television signals. The converter circuits provide automatic gain control of the bandpass filtered television signals to automatically adjust for varying lengths of triaxial and fiber optic cable. The apparatus includes a power control circuit operable to control power to the camera. The apparatus enhances the operating distance of triaxial cameras without having to modify the camera and camera control hardware.