Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-06-14
2005-06-14
Nasser, Robert L. (Department: 3736)
Surgery
Diagnostic testing
Cardiovascular
C600S501000, C600S310000, C600S322000
Reexamination Certificate
active
06905470
ABSTRACT:
The present invention relates to an apparatus and method capable of detecting a heartbeat using a photoplethysmography (PPG) even under a motion of a user. A primary object of the present invention is to allow the heartbeat of the user to be effectively detected from a PPG signal even under the motion. The object of the present invention is accomplished by the following process of acquiring the PPG signal from the user through a PPG sensor unit, detecting candidate heartbeat sequences from the PPG signal after calculating an expected mean interbeat interval through a signal processing technique based on the wavelet transformation and an autocorrelation function, and extracting an optimal heartbeat sequence or mean heart rate from the candidate heartbeat sequences.
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Bang Seok Won
Kim Kyung Hwan
Lee Mi Hee
Burns Doane Swecker & Mathis L.L.P.
Nasser Robert L.
Natnithithadha Navin
Samsung Electronics Co,. Ltd.
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