Circuit arrangement for matrixing three chroma signals to obtain

Details Circuit arrangement for matrixing three chroma signals to obtain Circuit arrangement for matrixing three chroma signals to obtain

1986-06-18

1987-08-18

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, H04N 967

Patent

active

046880836

ABSTRACT:
To control the amplitude of color difference signals (R-Y, B-Y), a circuit is formed by two transistors each receiving matrixed color difference signals at their emitters, the base electrodes of one of the transistors (14, 16) being connected to a source of reference voltage and the base electrodes of the other of the transistors (13, 15) being connected to a common controlled source of voltage (U.sub.G, 18) The color difference signals are then available at the collectors of the second transistors (13, 15) under controlled conditions.

REFERENCES:
patent: 4023200 (1977-05-01), Hess
patent: 4553141 (1985-11-01), Flasza

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