Patent ID: 8023916

Claim:
An onboard reception device, comprising: a first receiver which is tuned to demodulate a first signal having a carrier wave at a first frequency; a second receiver which is tuned to demodulate a second signal having a carrier wave at a second frequency which is different from the first frequency, the second received signal having a reception level lower than a reception level of the first received signal; a second frequency selection device which, when the first frequency is not in vicinity of predetermined narrow band noise frequencies, selects the second frequency from among a plurality of candidates based on candidate frequency having a wide band noise signal which has highest reception level and correlates with wide band noise signal of the first frequency; a noise cancellation device which cancels noise included in the first demodulated received signal which is demodulated by the first receiver, based upon the second demodulated received signal which is observed by the second receiver; and an output device which outputs the first demodulated received signal in which the noise has been cancelled, in a manner in which it can be appreciated by a user.