H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/40, 350/81
H04N 7/08 (2006.01) H04J 11/00 (2006.01) H04N 7/06 (2006.01)
Patent
CA 1297580
ABSTRACT OF THE DISCLOSURE In a multiplex signal processing apparatus, in the band of a demodulated signal in which a carrier is amplitude- modulated in a vestigial side band by a main signal, another carrier is superposed which is identical in frequency to the first carrier but different in phase by 90° is amplitude- modulated in its double side bands by a multiplex signal which is different from the main signal and which is formed into a vestigial side band signal by a nyquist filter. At least either the frequency or polarity of the multiplex signal is inverted on the transmission side by a multiplier, an oscillator and a filter. At least either the frequency or polarity of the multiplex signal is inverted on the reception side by a multiplier, an oscillator and a filter. The reception side has a crosstalk reduction filter for removing crosstalk from the main signal to the multiplex signal.
577606
Abe Yoshio
Inoue Shuji
Kageyama Sadashi
Uwabata Hideyo
Yasumoto Yoshio
Fetherstonhaugh & Co.
Matsushita Electric Industrial Co. Ltd.
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