Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04N
PICTORIAL COMMUNICATION, e.g. TELEVISION
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H04N7/08
Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band; , e.g. by time division
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H04N7/084
with signal insertion during the horizontal blanking interval; only
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H04N7/085
the inserted signal being digital
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