Patent ID: 7953189
Filing Date: 2011-05-31
Classification: H04B

Abstract:
1. A receiver comprising: a reception signal detecting circuit that detects whether reception of a reception signal in which data to be received is superposed on pulses of q (q represents an integer from 1 to p) out of pulses from 1 to p (p represents any integer of 2 or more) is started; a pulse number adjusting circuit that outputs a pulse number signal representing “r” (r pulses) (r represents an integer from 1 to p) out of the pulses from 1 to p when the reception signal detecting circuit starts the reception of the reception signal; a template generating circuit that generates substantially the same template as the r pulses represented by the pulse number signal out of the templates from the template having substantially the same waveform as the one pulse to the template having the same waveform as the p pulses when an input of the pulse number signal is received; and a correlation judging circuit that judges the correlation degree between the q pulses in the reception signal and the generated substantially same template as the r pulses, wherein the correlation judging circuit recognizes that the synchronization of the reception signal has been enabled to be captured when it is judged that the correlation degree is large, and when the correlation judging circuit judges that the correlation degree is small, the pulse number adjusting circuit outputs a pulse number signal representing “s” (s pulses) (s represents an integer from 1 to p that is different from r) out of the pulses from 1 to p in place of the r pulses, and the template generating circuit generates substantially the same template as the s pulses.