Method and apparatus for the transmission and reception of a multicarrier high definition television signal
AssigneeNorth American Philips Corporation
InventorsAlan P. Cavallerano, Eberhard Fisch, Mikhail Tsinberg
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Abstract
A method and apparatus for generating and receiving a high definition television signal suitable for use in a broadcasting environment wherein a conventional television signal is also used, having multiple frequency multiplexed subcarriers placed within the frequency spectrum of the signal so as to minimize interference with and from the conventional television signal.
Claims17
A method for forming a frequency multiplexed television signal suitable for use in a broadcasting environment wherein a conventional television signal comprising a picture carrier and a color subcarrier having respective frequency locations within said conventional television signal is also used, said method comprising the steps of:
- (a) deriving from a television source signal, a plurality of signal components;
- (b) modulating a plurality of subcarriers with a plurality of said signal components;
- and
- (c) selecting the frequencies of said subcarriers so as to place them in respective frequency locations within said frequency multiplexed television signal least likely to interfere with the picture carrier and color subcarrier of said conventional television signal.
An apparatus for forming a frequency multiplexed television signal suitable for use in a broadcasting environment wherein a conventional television signal comprising a picture carrier and a color subcarrier having respective frequency locations within said conventional television signal is also used, said apparatus comprising in combination:
- (a) means for deriving from a television source signal, a plurality of signal components;
- (b) means for modulating a plurality of subcarriers with a plurality of said signal components;
- and
- (c) means for selecting the frequencies of said subcarriers so as to place them in respective frequency locations within said frequency multiplexed television signal least likely to interfere with the picture carrier and color subcarrier of said conventional television signal.
Dependencies are inferred from the claim text.