Tri-state controlled video switch

Details Tri-state controlled video switch Tri-state controlled video switch

1996-01-16

1996-10-01

Kostak, Victor R.

Television

Image signal processing circuitry specific to television

Switching

326 56, H04N 544

Patent

active

055614787

ABSTRACT:
A tri-state controlled video switch includes three switch transistors, each being coupled to a common output line and each being supplied with a different video input signal. A microprocessor controls the voltage condition on a control line. In response to a high, low or open voltage condition on the control line, an arrangement of transistors controls the operation of the switch transistors such that only a corresponding one of the three video signals is coupled to the common output line.

REFERENCES:
patent: 3056039 (1992-09-01), Onyskevych
patent: 5255097 (1993-10-01), Spiero et al.

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