Patent ID: 7245960
Filing Date: 2007-07-17
Classification: A61B

Abstract:
1. A system for measuring a heart rate, comprising: a database in which at least one set of electrocardiogram waveform data of a living body related to each person to be examined are stored in advance, the electrocardiogram waveform data serving as reference waveform data; an acquisition unit for acquiring a heartbeat signal generated in the living body; a production unit for producing electrocardiogram waveform data of the living body based on the acquired heartbeat signal; a search unit for searching the database on the basis of produced waveform data served by the produced electrocardiogram waveform data, to specify the reference waveform data of the living body from which the heartbeat signal has been acquired; a cross-correlation processing unit for performing cross-correlation processing between the produced waveform data of which lower-frequency components have been removed and the specified reference waveform data; and a calculation unit for calculating an extremal value every period of time from data subjected to R wherein the cross-correlation processing unit calculates R where x denotes the produced electrocardiogram waveform data of which lower-frequency components have been removed, γ denotes the specified reference waveform data template data, τ denotes a delay time and provides a value of the R