H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
328/164
H04Q 5/10 (2006.01) H04Q 1/453 (2006.01)
Patent
CA 1128614
ABSTRACT OF THE DISCLOSURE A multi-frequency signal receiving apparatus for receiving signals with at least more than two frequencies and selectively separating these signals, comprising a first maximum value detecting means for detecting the maximum value of the rectified outputs of a plurality of channel filters provided for said signals to be selected; a second maximum value detecting means for detecting the maximum value of the rectified outputs at the intermediate stage of two channel filters for discriminating the signals at both ends of the signal frequency bands of a plurality of said channel filters; and a comparison means for comparing the outputs of said first and second maximum value detecting means with an appropriate weight and thereby detecting the presence or absence of the signal to be detected; whereby based on the result of comparison, the threshold value of discriminators placed at the succeeding stage of said channel filters for discriminating the predominant frequency signal is controlled. The invention thus permits the elimination of input filers, and realizes an economical and reliable signal receiver.
336875
Gowling Lafleur Henderson Llp
Hitachi Ltd.
LandOfFree
Multi-frequency signal receiving apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-frequency signal receiving apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-frequency signal receiving apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-75172