Patent ID: 8629716

Claim:
A demodulator comprising: an amplitude demodulating path adapted to route a carrier signal; a frequency demodulating path adapted to route the same carrier signal; a mode control unit coupled to an output terminal of the amplitude demodulating path and an output terminal of the frequency demodulating path; and a pulse-width modulator coupled into the frequency demodulating path; wherein the mode control unit is adapted to control different modes of demodulation; wherein, when the demodulator is operated in a controllable weight amplitude frequency shift keying (CW-AFSK) mode, the mode control unit is adapted to control the pulse-width of the pulse-width modulator in dependence on an output signal of the amplitude demodulating path; wherein the modes of demodulation further comprise one or more of a group consisting of amplitude shift keying (ASK) mode, frequency shift keying (FSK) mode and dual channel amplitude frequency shift keying (DC-AFSK) mode.