Pulse or digital communications – Receivers
Patent
1995-08-31
1998-03-24
Tse, Young T.
Pulse or digital communications
Receivers
455205, H03D 318
Patent
active
057321086
ABSTRACT:
A frequency difference signal of a modulated signal (f.sub.1) and an unmodulated signal (f.sub.2) is produced maintaining the information of the frequency or phase modulation. According to the method, the time-related order of entry of the front edges of the pulses of the modulated and the unmodulated signal is controlled and the edge of the frequency difference signal in question at any moment is formed timewise at the same point as the edge of such modulated signal at which the time-related order of arrival of the modulating signal and the unmodulated signal has changed. Hereby, the frequency or phase shift of the modulated signal can be detected as an equivalent change in the frequency difference signal, and the modulation of the frequency difference signal is detected on the basis of the location of the pulse edge of the frequency difference signal.
REFERENCES:
patent: 4278998 (1981-07-01), Miskin
patent: 4584693 (1986-04-01), Levy et al.
patent: 4785255 (1988-11-01), Lucak et al.
patent: 4829542 (1989-05-01), Shibano
patent: 5003553 (1991-03-01), Schluge et al.
patent: 5081650 (1992-01-01), Hasegawa et al.
patent: 5122758 (1992-06-01), Tomita
patent: 5440636 (1995-08-01), Herrick
Kananen Kari
Rapeli Juha
Nokia Mobile Phones Ltd.
Tse Young T.
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