Video switch circuit

Details Video switch circuit Video switch circuit

1980-06-02

1982-12-07

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358183, 307243, 307259, H04N 522, H03K 1774

Patent

active

043630332

ABSTRACT:
A circuit for selecting one of a number of video signals to be processed by a television receiver. The circuit comprises diode means having inputs suitable for coupling to alternate sources of video signals. A bias source applies a bias voltage to the diode means and control means applies various control voltages to the diode means. The relationship of the control voltages to the bias voltage determines which of the alternate sources of video signals are coupled to the output of the diode means.

REFERENCES:
patent: 3006993 (1961-10-01), Barndt
patent: 3207842 (1965-09-01), Flagle
patent: 4282447 (1981-08-01), Summers et al.

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