Heart rate data collection
First Claim
1. A method executable by a portable monitoring device including a photoplethysmograph (PPG) sensor, the method comprising:
- generating, by a light detector of the PPG sensor, a first electrical signal based on ambient light detected by the light detector;
capturing a sample of the first electrical signal;
emitting, by a light emitter of the PPG sensor, light after the sample of the first electrical signal is captured;
generating, by the light detector, a second electrical signal based on the emitted light;
countering a component of the second electrical signal associated with ambient light based on the captured sample of the first electrical signal; and
capturing a sample of the second electrical signal as countered based on the captured sample of the first electrical signal.
1 Assignment
0 Petitions
Accused Products
Abstract
One innovative aspect is directed to heartrate data collection. In some implementations, a circuit includes a light detector for generating a detected signal based on received light. The circuit includes a switching circuit configured to receive a first signal based on the detected signal and to switch among a first and a second configuration. In some implementations, the circuit includes a first and a second sampling circuit for sampling a value of the first signal when the switching circuit is in the first configuration and second configurations, respectively. In some implementations, the circuit includes an ambient light cancellation circuit for countering a first component of the first signal while the first switching circuit is in the first configuration. In some implementations, the circuit includes an adjustable gain circuit for adjusting a gain of the first signal while the first switching circuit is in the first configuration.
-
Citations
30 Claims
-
1. A method executable by a portable monitoring device including a photoplethysmograph (PPG) sensor, the method comprising:
-
generating, by a light detector of the PPG sensor, a first electrical signal based on ambient light detected by the light detector; capturing a sample of the first electrical signal; emitting, by a light emitter of the PPG sensor, light after the sample of the first electrical signal is captured; generating, by the light detector, a second electrical signal based on the emitted light; countering a component of the second electrical signal associated with ambient light based on the captured sample of the first electrical signal; and capturing a sample of the second electrical signal as countered based on the captured sample of the first electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A portable monitoring device comprising:
-
a light detector to generate electrical signals based on light detected by the light detector; a sampling circuit to capture samples of the electrical signals; a light emitter to emit light; and a controller to control operation of the light detector, the sampling circuit and the light emitter, the controller configured to cause; the light detector to generate a first electrical signal based on ambient light detected by the light detector while the light emitter is not emitting light, the sampling circuit to capture a sample of the first electrical signal, the light emitter to emit light after the sample of the first electrical signal is captured, the light detector to generate a second electrical signal based on the emitted light, a countering of a component of the second electrical signal associated with ambient light based on the captured sample of the first electrical signal, and the sampling circuit to capture a sample of the second electrical signal as countered based on the captured sample of the first electrical signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. Non-transitory computer readable media including processor-executable code that, when executed, is configured to cause circuitry to:
-
generate, by a light detector of a photoplethysmograph (PPG) sensor, a first electrical signal based on ambient light detected by the light detector; capture a sample of the first electrical signal; emit, by a light emitter of the PPG sensor, light after the sample of the first electrical signal is captured; generate, by the light detector, a second electrical signal based on the emitted light; counter a component of the second electrical signal associated with ambient light based on the captured sample of the first electrical signal; and capture a sample of the second electrical signal as countered based on the captured sample of the first electrical signal. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
-
Specification