Patent ID: 8460199
Filing Date: 2013-06-11
Classification: A61B

Abstract:
1. A device for monitoring a real-time vital sign of a user, the device comprising: an article attached to the user; an optical sensor for generating a real-time digitized optical signal corresponding to a flow of blood through an artery of the user, the optical sensor comprising a photodetector, a first LED emitting a green light, a second LED emitting a green light, and a light barrier, the light barrier preventing the photodetector from receiving direct light from the first LED or the second LED; an accelerometer connected to the article, the accelerometer generating a real-time accelerometer data comprising a X-axis signal, a Y-axis signal and a Z-axis signal based on a movement of the user; and a processor configured to receive the real-time digital signal from the optical sensor and configured to receive the real-time accelerometer data from the accelerometer, the processor configured to generate a period of motion Comb filter value from the real-time accelerometer data utilizing an array of Comb filters, the processor configured to generate a real-time heart rate for the user based on the real-time digital signal filtered by suppressing the period of motion Comb filter value and a heart rate Comb filter value.