Systems for eliminating high-frequency disturbances in televisio

Details Systems for eliminating high-frequency disturbances in televisio Systems for eliminating high-frequency disturbances in televisio

1974-08-15

1976-02-10

Murray, Richard

Telegraphy

Systems

Simplex-reversing periodic

H04N 521

Patent

active

039378756

ABSTRACT:
Superimposed pictures on the video outputs of cameras resulting from picking up stray transmitted television signals are eliminated by shielding the camera amplifier, and by insertion of inductances at the input of the amplifier and between the first two stages. The inductances combine with existing parasitic capacitances to create low-pass filters which pass the video signal from the camera but block the higher frequency transmitted television signals.

REFERENCES:
patent: 2687514 (1954-08-01), Roberts
patent: 3046333 (1962-07-01), Gebel
patent: 3153171 (1964-10-01), Poole et al.
patent: 3238295 (1966-03-01), Meinl et al.

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