Amplitude shift keying (ASK) and frequency shift keying (FSK) signal receiver for a vehicle

摘要

A method of receiving signals comprises, at a vehicle, receiving a first signal of an amplitude shift keying (ASK) modulation type and a second signal of a frequency shift keying (FSK) modulation type. Based upon a set of predetermined criteria that indicate, at least in part, a priority between ASK and FSK communications, one of the signals is selected. The selected signal is then sent to a vehicular controller 126 over a single transmission line 124. The first signal may be a remote keyless entry (RKE) frame or tyre pressure monitoring system (TPMS) frame. The second signal may be a passive entry passive start (PEPS) frame. The higher priority may be given to FSK reception since it is unable to withstand delays. The selecting step may also comprise determining whether the first or second signal is a reflected signal and ignoring the reflected signal.