H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/12 (2006.01) H03H 21/00 (2006.01) H04B 1/18 (2006.01) H04L 27/14 (2006.01)
Patent
CA 2644008
A digital signal receiving apparatus includes: detection-judging portion judging a possible presence of a desired signal when a signal level of a smoothed signal is greater than a reference level, wherein said first smoothed signal and said second smoothed signal are compared in order to generate a detection signal representing a judgment of a possible presence of a desired signal, said second smoothed signal having a convergence speed slower than that of the first smoothing filter, a filter controlling portion switching an adaptive filter from an adaptive mode to a non-adaptive mode when the detection-judging portion judges the possible presence of the desired signal and switching from the non-adaptive mode to the adaptive mode when the detection-judging portion judges the absence of the desired signal; a limiting portion limiting a signal level of an auto-correlation signal to the signal level of the smoothed signal; and a demodulating portion demodulating the auto-correlation signal having the signal level limited by the limiting means so as to generate a demodulated signal, wherein the input to the demodulator is limited to the level of a smoothed signal, said smoothed signal being generated from the input of the detection judging portion
Aouine Tarik
Coutant Frederic
Furuhashi Akira
Horie Takahiro
Murakami Yuichi
Aisin Seiki Kabushiki Kaisha
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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