Noise reducing circuit for video signals

Details Noise reducing circuit for video signals Noise reducing circuit for video signals

1975-11-18

1977-06-21

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

307360, 325480, H04N 514, H03K 520

Patent

active

040315479

ABSTRACT:
A noise reducing circuit for video signals, in which a transistor has its base connected to a video detector and its collector to a direct current source through a coil, two diodes have their cathodes connected together and grounded through a first resistor with the anode of one of the diodes connected to one end of the coil and that of the other diode connected to the other end thereof, the collector of the transistor is further connected through a capacitor and a second resistor to the input terminal of a video output amplifier, which input terminal is grounded through a third resistor, and the emitter of the transistor is connected through another coil to the said terminal and grounded through another capacitor and a variable resistor.

REFERENCES:
patent: 3333055 (1967-07-01), Krause
patent: 3602737 (1971-08-01), Radecke
patent: 3609224 (1971-09-01), O'Toole
patent: 3715477 (1973-02-01), Olson

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