Service switch arrangement for low level matrixing type televisi

Details Service switch arrangement for low level matrixing type televisi Service switch arrangement for low level matrixing type televisi

1980-09-22

1982-01-05

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 962

Patent

active

043097189

ABSTRACT:
A service switch arrangement for a color television receiver having a low level matrixing system developing red, blue and green color signals includes a service switch having a normal position and a service position. In the normal position of the switch, a video output amplifier is enabled for coupling the red, blue and green color signals to the electron gun cathode elements of a color cathode ray tube. In the service position of the switch, the video output amplifier is disabled while an independently generated DC control voltage is coupled to the electron gun cathode elements for facilitating adjustment of the cut-off points of the cathode elements.

REFERENCES:
patent: 3612757 (1971-10-01), Anderson
patent: 3670095 (1972-06-01), Arumugham
patent: 3820155 (1974-06-01), Neal
patent: 3959811 (1976-05-01), Shanley
patent: 4118729 (1978-10-01), Shanley
patent: 4123776 (1978-10-01), Cochran
patent: 4272777 (1981-06-01), Fitzgerald

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