H - Electricity – 04 – N
Patent
H - Electricity
04
N
330/105, 350/40
H04N 3/00 (2006.01)
Patent
CA 1129078
F23309-A -Canada ABSTRACT The present invention relates to a video processing apparatus which is responsive to a supplied analog video signal and has a capability for selectively reversing the polarity of the video signal. The invention includes an amplifier which has first and second outputs of opposite polarity. One of these outputs is selected by a selection mechanism which includes first and second pairs of oppositely facing diodes connected in series between the amplifier out- put terminals and a video output terminal. A control circuit is provided which responds to a polarity control signal to forward bias the diodes of one pair and reverse bias the diode of the other pair according to the condition of the polarity control signal.
368527
Computer Microfilm International Corporation
Gowling Lafleur Henderson Llp
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