Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 12, 2019
Patent Application Number
14466914
Date Filed
August 22, 2014
Patent Citations Received
US Patent 10912501 User-worn device for noninvasively measuring a physiological parameter of a user
US Patent 10912502 User-worn device for noninvasively measuring a physiological parameter of a user
US Patent 10945648 User-worn device for noninvasively measuring a physiological parameter of a user
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Patent Primary Examiner
Patent abstract
An algorithm for determining heart rate by removing motion artifacts from a PPG signal in the frequency domain utilizes a principal component analysis. Some examples of the present disclosure process PPG signals in combination with accelerometer signals to remove unwanted artifacts in the frequency domain. For example, principal components of the accelerometer signal can be generated and combined with the PPG signal to filter out acceleration contributions represented in the PPG signal to reveal heart rate peaks. Additionally, in some examples, templates may be stored for correlation with candidate heart rate peaks to select those peaks with the highest correlations with the stored templates.
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