Invention Grant
- Patent Title: Cyclic alternative pattern (CAP) detection device, cyclic alternative pattern (CAP) detection method, and recording medium
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Application No.: US16993086Application Date: 2020-08-13
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Publication No.: US11653876B2Publication Date: 2023-05-23
- Inventor: Mitsuyasu Nakajima , Kouichi Nakagome , Takashi Yamaya , Yasushi Maeno
- Applicant: CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Priority: JP 2019170827 2019.09.19
- Main IPC: A61B5/00
- IPC: A61B5/00 ; A61B5/16 ; A61B5/0245

Abstract:
A CAP detection device configured to acquire pulse wave data of a subject, derive a baseline of the data and an envelope of the baseline, identify a local maximum point of the envelope and determine, as CAP candidate points, a first local maximum point of the baseline before the local maximum point of the envelope and a second local maximum point of the baseline after the local maximum point, and identify, for each CAP candidate point, a third local maximum point of the baseline before the CAP candidate point and a local minimum point of the baseline between the CAP candidate point and the third local maximum point and detect the CAP candidate point as a CAP based on an evaluation value obtained from a difference between the CAP candidate point and the third local maximum point and a difference between the CAP candidate point and the local minimum point.
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