CCD television camera with separated camera head

Details CCD television camera with separated camera head CCD television camera with separated camera head

1992-04-03

1995-02-14

Groody, James J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348 6, 348 61, 348506, 348211, H04N 5232

Patent

active

053899687

ABSTRACT:
A CCD television camera has a head part separated from the rest of the camera. The camera head part contains a CCD imaging device and is connected by only a single line coaxial cable to a main part containing a DC power source, a line flag output circuit, and a one H-alternate switch. The coaxial cable may be up to several hundred meters in length. Respective ends of the coaxial cable are connected to the head and main parts through hydrid coils to facilitate sending of DC power current and an accurately controlled sinusoidal clock frequency signal from the main part to the camera head part, and the sending of video signals over the same single cable line from the camera head part to the main part. The hybrid coils are tuned for resonance with the clock frequency and a PLL circuit, including the coaxial cable, regulates the clock frequency to adjust for different lengths of cable.

REFERENCES:
patent: 4018990 (1977-04-01), Long
patent: 4038683 (1977-07-01), Thorpe

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