HEART RATE DATA COLLECTION
First Claim
1. A method performed in response to a request to perform a sampling process, the method comprising:
- setting, by a controller, a gain of at least a first amplifier in at least a first sampling circuit;
causing a light emitter to emit a light signal;
operating said at least first sampling circuit to sample a detected incident light signal to produce an analog representation of said detected incident light signal;
operating an analog to digital converter to convert said analog representation of said detected incident light signal into a digital representation for further processing by said controller; and
substantially simultaneously with said operating said analog to digital converter, disabling said light emitter and said at least first sampling circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
One innovative aspect is directed to heart rate data collection. In some implementations, a circuit includes a light detector for generating a first electrical signal based on received light. The circuit includes a switching circuit, having a first and a second configuration, configured to receive a first voltage signal based on the first electrical signal and to switch among the first and the second configurations. The circuit includes first and second sampling circuits for sampling a value of the first voltage signal when the switching circuit is in the first configuration and second configurations, respectively. The circuit includes an ambient light cancellation circuit for generating a current signal to counter a first component of the first electrical signal when the first switching circuit is in the first configuration.
-
Citations
28 Claims
-
1. A method performed in response to a request to perform a sampling process, the method comprising:
-
setting, by a controller, a gain of at least a first amplifier in at least a first sampling circuit; causing a light emitter to emit a light signal; operating said at least first sampling circuit to sample a detected incident light signal to produce an analog representation of said detected incident light signal; operating an analog to digital converter to convert said analog representation of said detected incident light signal into a digital representation for further processing by said controller; and substantially simultaneously with said operating said analog to digital converter, disabling said light emitter and said at least first sampling circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A non-transitory computer-readable medium storing program code, the program code executable by a processor of a computing system to cause the computing system to:
-
receive a request to perform a sampling process; set a gain of at least a first amplifier in at least a first sampling circuit; cause a light emitter to emit a light signal; operate said at least first sampling circuit to sample a detected incident light signal to produce an analog representation of said detected incident light signal; operate an analog to digital converter to convert said analog representation of said detected incident light signal into a digital representation for further processing by said controller; and substantially simultaneously with said operating said analog to digital converter, disable said light emitter and said at least first sampling circuit. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A method for operating a biometric monitoring device, comprising:
-
receiving, by a controller, a request to initiate a biometric capture process; setting, in response to said request, a gain of at least a first amplifier in at least a first sampling circuit; causing a light emitter to emit a light signal toward a target surface; operating said at least first sampling circuit to sample a detected incident light signal to produce an analog representation of said detected incident light signal; operating an analog to digital converter to convert said analog representation of said detected incident light signal into a digital representation for further processing by said controller to complete said biometric capture process; and substantially simultaneously with said operating said analog to digital converter, disabling said light emitter and said at least first sampling circuit. - View Dependent Claims (21, 23, 24, 25, 27)
-
-
22. The method of claim 22, further comprising:
-
setting, by said controller, a gain of an ambient light detection process; causing a light detector to detect an ambient light signal; and sampling said ambient light signal at least partially based on said gain of said ambient light detection process to produce an analog representation of said ambient light signal for use in canceling an ambient component of said analog representation of said detected light signal. - View Dependent Claims (26, 28)
-
Specification