Patent ID: 8655436
Filing Date: 2014-02-18
Classification: A61B

Abstract:
1. A heart rate meter, comprising: a heart beat waveform detecting unit for detecting a heart beat waveform of a living body, and a signal processor for detecting a heart beat from the heart beat waveform, wherein, the signal processor comprises, a heart beat signal generating processor for subjecting the heart beat waveform to a signal processing to generate a heart beat signal, and a heart beat detecting processor for detecting a heart beat from the heart beat signal generated by the heart beat signal generating processor, wherein, the heart beat signal generating processor comprises a band pass filter that passes a frequency component in a predetermined narrow band to remove a noise component in the frequency band other than the primary component of the heart beat waveform, and a signal amplifier for amplifying a signal of the frequency component of the heart beat waveform according to a signal amplification characteristic that allows for a gain of the frequency component to increase from around a lower band towards a higher band in the predetermined narrow band such that the gain becomes the highest at the higher band of the predetermined narrow band.