Video signal mixing device for infrared/visible integrated imagi

Details Video signal mixing device for infrared/visible integrated imagi Video signal mixing device for infrared/visible integrated imagi

1989-05-24

1990-10-30

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358113, 250330, H04N 5272, H04N 533

Patent

active

049672762

ABSTRACT:
A infrared/visible integrated imaging apparatus having a video signal mixing device for superimposing a visible video signal upon an infrared video signal. The mixing device has a discriminating circuit setting electrical discrimination between an infrared video signal having a level higher than a predetermined black level and having a lower than the predetermined black level. The visible video signal simultaneously output with the infrared video signal having the level higher than a predetermined black level is practically cut off with a visible video signal selecting circuit. The partially cut off video signal is then superimposed on the thermal video signal for display. The level of each of the two video signals is independently controllable.

REFERENCES:
patent: 4524386 (1985-06-01), Scott
patent: 4608599 (1986-08-01), Kaneko et al.
patent: 4679068 (1987-07-01), Lillquist et al.
patent: 4751571 (1988-06-01), Lillquist
patent: 4759072 (1988-07-01), Yamane et al.
patent: 4843561 (1989-06-01), Larson

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