WEARABLE HEART RATE MONITOR
First Claim
1. A method of operating a heart rate monitor of a wearable fitness monitoring device comprising a plurality of sensors including the heart rate monitor and a motion detecting sensor, the method comprising:
- (a) detecting motion of the wearable fitness monitoring device using the motion detecting sensor;
(b) in response to detecting the motion in (a), operating the heart rate monitor in a worn detection mode configured to detect near proximity of the wearable fitness monitoring device to a user'"'"'s skin; and
(c) upon determining via the worn detection mode that the wearable fitness monitoring device is proximate to the user'"'"'s skin, operating the heart rate monitor in a first mode configured to determine one or more characteristics of the user'"'"'s heartbeat waveform.
1 Assignment
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Accused Products
Abstract
Some embodiments provide a wearable fitness monitoring device including a motion sensor and a photoplethysmographic (PPG) sensor. The PPG sensor includes (i) a periodic light source, (ii) a photo detector, and (iii) circuitry determining a user'"'"'s heart rate from an output of the photo detector. Some embodiments provide methods for operating a heart rate monitor of a wearable fitness monitoring device to measure one or more characteristics of a heartbeat waveform. Some embodiments provide methods for operating the wearable fitness monitoring device in a low power state when the device determines that the device is not worn by a user. Some embodiments provide methods for operating the wearable fitness monitoring device in a normal power state when the device determines that the device is worn by a user.
97 Citations
30 Claims
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1. A method of operating a heart rate monitor of a wearable fitness monitoring device comprising a plurality of sensors including the heart rate monitor and a motion detecting sensor, the method comprising:
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(a) detecting motion of the wearable fitness monitoring device using the motion detecting sensor; (b) in response to detecting the motion in (a), operating the heart rate monitor in a worn detection mode configured to detect near proximity of the wearable fitness monitoring device to a user'"'"'s skin; and (c) upon determining via the worn detection mode that the wearable fitness monitoring device is proximate to the user'"'"'s skin, operating the heart rate monitor in a first mode configured to determine one or more characteristics of the user'"'"'s heartbeat waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A wearable fitness monitoring device comprising:
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a motion sensor configured to provide output corresponding to motion by a user wearing the fitness monitoring device; a photoplethysmographic sensor comprising (i) a periodic light source, (ii) a photo detector positioned to receive periodic light emitted by the periodic light source after interacting with a user'"'"'s skin, and (iii) circuitry determining a user'"'"'s heart rate from an output of the photo detector; and control logic configured to; (a) detect motion of the wearable fitness monitoring device using the motion detecting sensor; (b) in response to detecting the motion in (a), operate the heart rate monitor in a worn detection mode configured to detect near proximity of the wearable fitness monitoring device to a user'"'"'s skin; and (c) upon determining via the worn detection mode that the wearable fitness monitoring device is proximate to the user'"'"'s skin, operate the heart rate monitor in a first mode configured to determine one or more characteristics of the user'"'"'s heartbeat waveform. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification