Color camera system

H - Electricity – 04 – N

Patent

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350/42

H04N 9/00 (2006.01) H04N 9/04 (2006.01)

Patent

CA 1117649

ABSTRACT OF THE DISCLOSURE A color camera system is disclosed in which a dot-like signal which appears on a TV screen caused by a processing error is effectively eliminated. A pick up device with a color coding filter derives composite signals containing color components modulated at a frequency fs where the composite signals are obtained in opposite phase line by line. An adder circuit is provided to mix the composite signals obtained from two adjacent lines. A detector detects the 2nd harmonic of fs from the mixed composite signals. A dual gate MOSFET is provided to suppress a high frequency region of a luminance signal which is derived from the composite signals in response to the detected 2nd harmonic of fs. -1-

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