| http://www.w3.org/ns/prov#value | - This invention relates to the transmission and reception of a television video signal, and more particularly to a system in which a standard NTSC video signal is encoded at a transmitter to a form in which the horizontal sync pulses are at a gray-representing level rather than a blacker-than-black representing level, and the received video signal is decoded to, or restored to, a standard NTSC vide
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