Patent ID: 8824597

Claim:
A field-based communication circuit comprising: a receiver circuit configured to receive a field input signal from a field source; a detection circuit communicatively associated with the receiver circuit, the detection circuit comprising: a voltage detection circuit communicatively associated with the receiver circuit, the voltage detection circuit configured to detect a voltage signal associated with the field input signal; a current detection circuit communicatively associated with the receiver circuit, the current detection circuit configured to detect a current signal associated with the field input signal; and a control circuit communicatively associated with the voltage detection circuit and the current detection circuit, the control circuit configured to estimate a first signal magnitude and a second signal magnitude corresponding to the voltage signal and the current signal, respectively, compare the first signal magnitude and the second signal magnitude with at least a first predetermined threshold level to thereby conduct a signal comparison, and trigger a selection of one of the voltage detection circuit and the current detection circuit based on the signal comparison such that the selection facilitates a demodulation of one of the voltage signal and the current signal.