Rca Inc.

Gary Ray Peterson

Lucas J Bazin

Peter Alan Levine

Cydney A Johnson

Dennis Michael Schneider

Arthur L Cobb, Jr

A color television camera including a selectively removable infrared (IR) rejection filter and controllable weighting luminance signal matrixing circuitry features increased low-light sensitity. During low-light conditions, the infrared rejection filter is removed from the optical path of the camera, permitting infrared light to pass to the camera's imaging means; the weighting of the controllable weighting luminance signal matrixing circuitry is altered to provide a more accurate visual representation; and the color subcarrier signal is disabled so that the camera produces only a black-and-white signal.

Color television camera with selectively removable infrared rejection

A synchronizing apparatus for compensating for cable length changes between a remote color television camera and a local control point is described. The color camera is of the type adapted to receive a 'gen-lock' type reference signal for synchronization. The apparatus is responsive to the 'gen-lock' signal and the signal from the television camera for generating a 'gen-lock' type signal phase advanced to compensate for cable delays.

Synchronizing apparatus for remote television apparatus

An electronic signal mixer is provided for combining first and second signals by additively (or differentially) combining the first and second signals to provide a first output signal. The first and second signals are further combined in a multiplier circuit to provide an output signal which is a differential (or additive) combination of the first and second signals multiplied by a coefficient determined by a control voltage applied to the multiplier. The first combined signal and the product output of the multiplier are further combined to provide a resultant signal comprised of any proportionality of the first and second signals in accordance with the value of the control voltage.

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Runnemede, NJ, United States of America

Gary Ray Peterson