Editing system for video apparatus
First Claim
1. An editing system for video apparatus comprising, in combination, switching means for controlling the operation of said video apparatus, means for detecting the voltage level of the video signal in said video apparatus, means connected to a source of power for providing a reference voltage, means for coupling said detecting means to a source of the video signal in said video apparatus, means coupled to said detecting means and responsive to said reference voltage for comparing said detected voltage level with said reference voltage to provide an output voltage signal when the voltage level of said video signal is diminished due to absence of picture information in said video signal for at least a period equal to one frame, and voltage responsive means coupled to said comparing means and responsive to said output voltage signal for activating said switching means for a predetermined period thereby controlling the operation of said video apparatus.
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Accused Products
Abstract
An advertising editing system for a video apparatus including a relay for controlling the operation of the video apparatus and a detector for sampling the voltage of the video signal and a comparator for comparing the sampled voltage amplitude with a reference voltage to provide an output voltage signal upon absence of picture information in the video signal for a period of time corresponding to at least one frame to activate the relay and condition the video apparatus during the period of the commercial message.
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Citations
10 Claims
- 1. An editing system for video apparatus comprising, in combination, switching means for controlling the operation of said video apparatus, means for detecting the voltage level of the video signal in said video apparatus, means connected to a source of power for providing a reference voltage, means for coupling said detecting means to a source of the video signal in said video apparatus, means coupled to said detecting means and responsive to said reference voltage for comparing said detected voltage level with said reference voltage to provide an output voltage signal when the voltage level of said video signal is diminished due to absence of picture information in said video signal for at least a period equal to one frame, and voltage responsive means coupled to said comparing means and responsive to said output voltage signal for activating said switching means for a predetermined period thereby controlling the operation of said video apparatus.
Specification