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Method and apparatus for detecting QRS complex of ECG

  • US 5,048,535 A
  • Filed: 06/12/1990
  • Issued: 09/17/1991
  • Est. Priority Date: 06/23/1989
  • Status: Expired due to Term
First Claim
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1. A method for detecting a QRS complex of an ECG, comprising:

  • inputting an ECG signal;

    setting a first threshold value based on a peak value of a first QRS complex of said ECG signal;

    setting a second threshold value by estimating a noise level proportional to an amount of noise included in said ECG signal;

    comparing said first threshold value with said second threshold value;

    setting the larger one of said first and second threshold values as a third threshold value for detecting a second QRS complex;

    detecting said second QRS complex by using said third threshold value; and

    outputting a synchronous signal synchronized with said detected second QRS complex.

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