Sughrue, Mion, Zinn, Macpeak, and Seas
Signal format detection circuit for digital radio paging receiver
 A signal detection circuit for a digital radio paging receiver is provided for successfully detecting a desired signal. A demodulated carrier wave, modulated with a code having n bits, is written into an n-stage shift register in response to a clock pulse of frequency f.sub.s. The output stages of the shift register are scanned in response to a scan signal of frequency nf.sub.s in order to provide an output. The output is dependent on the coincidence of the shift register outputs with a predetermined code and is used to enable an address detector circuit which compares a received signal to the desired signal stored in a PROM. 
Nippon Electric Co., Ltd.
H
H04W
inventional
Toshihiro Koichi
Mori Nagata