Television studio control apparatus
First Claim
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1. Television studio control apparatus, comprising:
- a mixer having a pair of input terminals, a control terminal and an output terminal;
means applying first video signals to one of said pair of input terminals;
means applying second video signals to the other of said pair of input terminals;
means applying switching signals to said control terminal substantially in time synchronism with the application of said second video signals to said mixer for coupling said second video signals to said output terminal in the presence of said switching signal and for coupling said first video signals to said output terminal in the absence of said switching signals;
said second video signal applying means applying its signals to said other of said pair of input terminals at an amplitude level which varies linearly with time.
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Abstract
This disclosure describes television studio control apparatus which permits caption or title information to be automatically faded into a video program signal and which further permits that information to be colored, if desired.
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Citations
5 Claims
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1. Television studio control apparatus, comprising:
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a mixer having a pair of input terminals, a control terminal and an output terminal; means applying first video signals to one of said pair of input terminals; means applying second video signals to the other of said pair of input terminals; means applying switching signals to said control terminal substantially in time synchronism with the application of said second video signals to said mixer for coupling said second video signals to said output terminal in the presence of said switching signal and for coupling said first video signals to said output terminal in the absence of said switching signals; said second video signal applying means applying its signals to said other of said pair of input terminals at an amplitude level which varies linearly with time. - View Dependent Claims (2, 3, 4, 5)
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Specification