Receiver

Details Receiver Receiver

2005-04-15

2009-11-24

Nguyen, Duc (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S552100, C455S114300, C455S431000, C375S347000

Reexamination Certificate

active

07623890

ABSTRACT:
A receiver accepts a digital signal having an upper side digital signal located in a higher frequency range on a frequency axis than an analog signal, and a lower side digital signal located in a lower frequency range on the frequency axis than the analog signal. A BPF (15) allows the analog signal to pass therethrough and a BPF (16) allows the analog signal and the digital signal to pass therethrough. BPFs (18) and (19) accept the output of the BPF (16) and output the upper side digital signal and the lower side digital signal, respectively. A digital receive level determining unit (20) and a selection SW (17) select either of the outputs of the BPFs (15) and (16) according to the receive levels of the upper side digital signal and the lower side digital signal, and output the selected output as a selected signal. The receiver then demodulates this selected signal.

REFERENCES:
patent: 5535248 (1996-07-01), Kurokami
patent: 6298224 (2001-10-01), Peckham et al.
patent: 6466768 (2002-10-01), Agahi-Kesheh et al.
patent: 2004/0101067 (2004-05-01), Abe et al.
patent: 2005/0113049 (2005-05-01), Takayama et al.
patent: 2000-165269 (2000-06-01), None
patent: 2002-359569 (2002-12-01), None

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