Patent ID: 8519744

Claim:
A method of electronic signal rectification including the steps of: (a) generating a variable amplitude input signal; (b) determining an upper threshold level; (c) determining a lower threshold level; (d) inputting the variable amplitude input signal and the upper threshold level into a first comparator; (e) inputting the variable amplitude input signal and the lower threshold level into a second comparator; (f) generating a first digital output signal in the first comparator using a first, external hysteresis circuit, wherein the first digital output signal is utilized by the first hysteresis circuit; (g) generating a second digital output signal in the second comparator using a second, external hysteresis circuit, wherein the second digital output signal is utilized by the second hysteresis circuit; (f) inputting the first digital output signal and the second digital output signal into a logic array; and (g) generating a digital level pulse output signal in the logic array that has a digital transition where the variable amplitude input signal passed through one of the lower threshold and the upper threshold; the step of generating the first digital output signal in the first comparator using the first hysteresis circuit includes providing the first digital signal to the first comparator through a circuit containing a first capacitance and providing the first digital signal to the upper threshold level input into the first comparator circuit through a circuit containing a first resistance and a second capacitance.