Physiological information generation based on bioimpedance signals
First Claim
1. A method comprising:
- determining a drive current signal magnitude for a bioimpedance signal to capture a sensor signal including data representing a physiological-related component;
selecting the drive current signal magnitude as a function of an impedance of a tissue;
driving the bioimpedance signal to one or more electrodes that are configured to convey the bioimpedance signal to the tissue;
receiving the sensor signal from the tissue;
adjusting a gain for an amplifier;
applying the gain to the sensor signal including the data representing the physiological-related component; and
generating an amplified signal to include a portion of the physiological-related signal component that includes data representing a physiological characteristic.
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Accused Products
Abstract
Embodiments relate generally to a wearable device implementing a touch-sensitive interface in a metal pod cover and/or bioimpedance sensing to determine physiological characteristics, such as heart rate. According to an embodiment, a wearable device and method includes determining a drive current signal magnitude for a bioimpedance signal to capture data representing a physiological-related component, and selecting the drive current signal magnitude as a function of an impedance of a tissue. Further, the method can include driving the bioimpedance signal to that are configured to convey the bioimpedance signal to the tissue. Also, the method can receive the sensor signal from the tissue, adjust a gain for an amplifier, and apply the gain to data representing the physiological-related component. The method can include generating an amplified signal to include a portion of the physiological-related signal component that includes data representing a physiological characteristic.
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Citations
16 Claims
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1. A method comprising:
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determining a drive current signal magnitude for a bioimpedance signal to capture a sensor signal including data representing a physiological-related component; selecting the drive current signal magnitude as a function of an impedance of a tissue; driving the bioimpedance signal to one or more electrodes that are configured to convey the bioimpedance signal to the tissue; receiving the sensor signal from the tissue; adjusting a gain for an amplifier; applying the gain to the sensor signal including the data representing the physiological-related component; and generating an amplified signal to include a portion of the physiological-related signal component that includes data representing a physiological characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a wearable housing; an array of electrodes disposed at a surface of the wearable housing, at least a portion of the array including electrodes configured to either drive a first signal to a target location or receive a second signal from the target location, the second signal including data representing one or more physiological characteristics; a signal driver configure to apply an adjustable current signal to a subset of the electrodes, a magnitude of the adjustable current signal being a function of an impedance of tissue; and a signal receiver configured to receiving the sensor signal from the tissue and apply an adjusted gain to the sensor signal including the data representing the physiological-related component. - View Dependent Claims (13, 14, 15, 16)
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Specification