Method of obtaining information that corresponds to electrocardiogram of human body from pulse wave thereof
First Claim
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1. A method of obtaining information that corresponds to an R-R interval of electrocardiogram from a pulse-wave of a human body, said method comprising the steps of:
- detecting said pulse-wave of the human body in a predetermined period;
differentiating said detected pulse-wave to provide a speed-pulse-wave;
taking points of said speed-pulse-wave into peak values on the basis of a first threshold value;
measuring intervals of said peak values; and
substituting said intervals for the R-R interval of said electrocardiogram.
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Abstract
A method of obtaining information that corresponds to the R—R interval of electrocardiogram from the pulse-wave of a human body. The method is comprised of steps of detecting the pulse-wave of a human body in a predetermined period, differentiating the detected pulse-wave to provide a speed-pulse-wave, measuring intervals of peaks of the speed-pulse-wave, and substituting the intervals of peaks of the speed-pulse-wave for the R—R interval of the electrocardiogram.
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Citations
17 Claims
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1. A method of obtaining information that corresponds to an R-R interval of electrocardiogram from a pulse-wave of a human body, said method comprising the steps of:
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detecting said pulse-wave of the human body in a predetermined period;
differentiating said detected pulse-wave to provide a speed-pulse-wave;
taking points of said speed-pulse-wave into peak values on the basis of a first threshold value;
measuring intervals of said peak values; and
substituting said intervals for the R-R interval of said electrocardiogram. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
said first threshold value is calculated from said speed-pulse-wave. -
4. The method as claimed in claim 2, wherein
said first threshold value is calculated from a maximum value of said intervals of peaks of said speed-pulse-wave. -
5. The method as claimed in claim 2, wherein
said first threshold value is a product of a maximum value of said speed-pulse-wave and a value equal to or larger than 0.16 or equal to or smaller than 0.17. -
6. The method as claimed in claim 2, wherein
said first threshold value is calculated from said intervals of said peak values of said speed-pulse-wave. -
7. The method as claimed in claim 2, wherein
said second threshold value is calculated from a mean value of said intervals of said peak values of said speed-pulse-wave. -
8. The method as claimed in claim 2, wherein
said first threshold value is a product of a mean value of said intervals of said peak values and 0.75. -
9. The method as claimed in claim 2, wherein
said first threshold value is calculated from said speed-pulse-wave, and said second threshold value is calculated from a peak interval of said pulse-speed-wave. -
10. The method as claimed in claim 2, wherein
said first threshold value is calculated from a maximum value of said intervals of said peak values of said speed-pulse-wave, and said second threshold value is calculated from said intervals of said peak values of said pulse-speed-wave. -
11. The method as claimed in claim 2, wherein
said first threshold value is a product of a maximum of said intervals of said peak values of said speed-pulse-wave and a value equal to 0.16, 0.17 or between 0.16 and 0.17, and said second threshold value is determined according to said intervals of said peak values. -
12. The method as claimed in claim 2, wherein
said first threshold value is calculated from said speed-pulse-wave, and said second threshold value is calculated from a mean value of said intervals of said peak values of said speed-pulse-wave. -
13. The method as claimed in claim 2, wherein
said first threshold value is calculated from a maximum of said peak values of said speed-pulse-wave, and said second threshold value is calculated from a mean value of said intervals of said peak values of said speed-pulse-wave. -
14. The method as claimed in claim 2, wherein
said first threshold value is a product of a maximum of said intervals of said peak values of said speed-pulse-wave and a value equal to 0.16, 0,17 or between 0.16 and 0.17, and said second threshold value is calculated from a mean value of said intervals of said peak values of said speed-pulse-wave. -
15. The method as claimed in claim 2, wherein
said first threshold value is calculated from said speed-pulse-wave, and said first threshold value is a product of a mean value of said intervals of said peak values and 0.75. -
16. The method as claimed in claim 2, wherein
said first threshold value is calculated from a maximum of said peak values of said speed-pulse-wave, and said second threshold value is a product of a mean value of said intervals of said peak values and 0.75. -
17. The method as claimed in claim 2, wherein
said first threshold value is a product of a maximum of said peaks of said speed-pulse-wave and a value equal to 0.16, 0.17 or between 0.16 and 0.17, and said second threshold value is a product of a mean value of said intervals of said peak values and 0.75.
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Specification