Patent ID: 6785573
Filing Date: 2004-08-31
Classification: A61B,Y10S

Abstract:
A method of processing ECG signals comprising the steps of:(a) applying amplified analog waveforms representative of ecg vectors to an analog-to-digital converter; (b) obtaining digital values from the analog-to-digital converter representative of the amplitude of the ecg vector signals at discrete sampling times; (c) storing the digital values in a multi-stage time delay buffer; (d) computing from the stored digital values a scaled noise signal falling within a first predetermined frequency band; (e) dynamically determining upper and lower limits for the scaled noise signal computed in step (d); and (f) subtracting the signal computed in step (d) from a data sample stored in a predetermined stage of the time delay buffer to yield an output signal devoid of noise falling within said first predetermined frequency band.