Patent ID: 11944460
Assignee: KOREA INSTITUTE OF ORIENTAL MEDICINE
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of determining a sharpness index of a pulse wave signal, the method comprising:
receiving a pulse wave signal;
determining a first reference line starting point and a second reference line starting point based on a curvature of the pulse wave signal, wherein the first reference line starting point is determined to be a point at which a first derivative result of the pulse wave signal is maximized;
determining a first reference line connecting the first reference line starting point and a first reference line ending point by determining the first reference line ending point by applying an intersecting tangent method to the first reference line starting point, and determining a second reference line connecting the second reference line starting point and a second reference line ending point by determining the second reference line ending point by applying the intersecting tangent method to the second reference line starting point; and
determining a sharpness index using a peak point of the pulse wave signal, the first reference line, and the second reference line.