Signal processing method

A signal processing method comprising:

• sampling an input signal and storing a first maximum value of the input signal on a storage element as a first maximum stored value;
• generating a guardband signal based on an output signal of the storage element that is less than the first maximum stored value of input signal by an amount that is a multiple of a noise anticipated on the input signal;
• comparing the guardband signal to the input signal;
• sampling the input signal and storing a second maximum value of the input signal as a second maximum stored value that is different from the first maximum stored value wherein the second maximum stored value is stored on the storage element when the input signal is less than the guardband signal;
• and
• generating a threshold signal that is a percentage value of the first maximum stored value of the input signal, and comparing the input signal to the threshold signal for generating an output signal.

A signal processing method comprising:

• sampling an input signal and holding a maximum value of the input signal on a storage element as a maximum stored value by an amount that is a multiple of a noise anticipated on the input signal;
• generating a guardband signal based on an output signal of the storage element that is less than the maximum stored value;
• comparing the guardband signal to the input signal for generating a below guardband signal;
• generating a threshold signal that is a percentage value of the maximum stored value;
• comparing the input signal to the threshold signal for generating an output signal;
• and
• changing the maximum stored value on the storage element when the output signal and the below guardband signals are both logically positive.