Heart rate meter and heart beat detecting method
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United States of America Patent
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Feb 18, 2014
Grant Date -
Jun 18, 2009
app pub date -
Sep 5, 2006
filing date -
Sep 27, 2005
priority date (Note) -
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Abstract
A heart rate meter includes a heart beat detecting unit for detecting a heart beat waveform of a living body and a signal processor 4 for detecting a heart beat from the heart beat waveform. The signal processor 4 includes a heart beat signal generating processor 5 for adding a predetermined frequency characteristic to the signal within a predetermined narrow band of the heart beat waveform to generate a heart beat signal, and a heart beat detecting processor 6 for detecting a heart beat from a waveform distortion that is added to the heart beat signal by the heart beat signal generating processor. The heart beat signal generating processor 5 subjects the signal within the predetermined narrow band of the heart beat waveform to a signal processing, thereby removing the noise component existing in the frequency band, other than the primary component of the heart beat waveform, and performs signal processing to add the predetermined frequency characteristic, thereby generating a heart beat signal in which the signal intensity of a frequency component is amplified. The heart beat detecting processor 6 detects the waveform distortion added to the heart beat signal by the heart beat signal generating processor. Even when there is a variation in the measuring condition and signal characteristics such as the frequencies and the crest values of the fundamental wave, higher harmonic, and noise component are changed, a heart beat is accurately detected.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- CITIZEN WATCH CO., LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kasai, Tsuneharu | Saitama, JP | 7 | 203 |
Shimizu, Hideki | Saitama, JP | 119 | 1012 |
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