Video signal processor with automatic kinescope white...

Details Video signal processor with automatic kinescope white... Video signal processor with automatic kinescope white...

H - Electricity

04

N

350/57

H04N 5/58 (2006.01) H04N 9/64 (2006.01) H04N 9/73 (2006.01)

Patent

CA 1216658

Abstract A color television receiver includes a network for automatically limiting excessive kinescope beam currents developed in response to video signal image information, and a white balance control network for automatically controlling the white level drive (gain) characteristics of the kinescope in response to a white drive reference signal applied to the video signal path during given measuring intervals. A control signal developed by the beam current limiter network, otherwise applied to the video signal path, is decoupled from the video signal path during the white level measuring intervals to prevent distortion of the white level control function.

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