METHODS AND SYSTEMS FOR POWER OPTIMIZATION IN A MEDICAL DEVICE
First Claim
1. A method of operating a physiological monitor, the method comprising:
- generating a first light drive signal for activating a first light source to emit a first photonic signal;
receiving a first light signal attenuated by a subject, wherein the first light signal comprises a component corresponding to the first photonic signal;
analyzing the component of the first light signal to determine when to activate a second light source; and
generating a second light drive signal, based on the analysis of the component, for activating the second light source to emit a second photonic signal.
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Accused Products
Abstract
A physiological monitoring system may use photonic signals to determine physiological parameters. The system may vary parameters of a light drive signal used to generate the photonic signal from a light source such that power consumption is reduced or optimized. Parameters may include light intensity, firing rate, duty cycle, other suitable parameters, or any combination thereof. In some embodiments, the system may use information from a first light source to generate a light drive signal for a second light source. In some embodiments, the system may vary parameters in a way substantially synchronous with physiological pulses, for example, cardiac pulses. In some embodiments, the system may vary parameters in response to an external trigger.
121 Citations
24 Claims
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1. A method of operating a physiological monitor, the method comprising:
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generating a first light drive signal for activating a first light source to emit a first photonic signal; receiving a first light signal attenuated by a subject, wherein the first light signal comprises a component corresponding to the first photonic signal; analyzing the component of the first light signal to determine when to activate a second light source; and generating a second light drive signal, based on the analysis of the component, for activating the second light source to emit a second photonic signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A physiological monitoring system, comprising processing equipment configured to:
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generate a first light drive signal for activating a first light source to emit a first photonic signal; receive a first light signal attenuated by a subject, wherein the first light signal comprises a component corresponding to the first photonic signal; analyze the component of the first light signal to determine when to activate a second light source; and generate a second light drive signal, based on the analysis of the component, for activating the second light source to emit a second photonic signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification