The present invention relates to a method and apparatus in connection with measuring the heartbeat rate of a person. In the method, the ECG signal of the person and the timing moment of at least one ECG signal waveform, such as the QRS complex, are measured with a heartbeat rate monitor. The average...http://www.google.fr/patents/US5840039?utm_source=gb-gplus-shareBrevet US5840039 - Method and apparatus in connection with measuring the heartbeat rate of a person
Method and apparatus in connection with measuring the heartbeat rate of a ...
