Patent ID: 11903676
Assignee: HI LLC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 0:
1. A wearable system for use by a user comprising:
a head-mountable component configured to be attached to a head of the user, the head-mountable component comprising an array of photodetectors configured to detect photons from a light pulse after the light pulse reflects off a target within the head; and
a computing device comprising a processor configured to:
measure a noise level of a photodetector included in the array of photodetectors, the noise level comprising a dark count rate that measures a dark count divided by a time period;
determine that the noise level meets a predetermined threshold comprising a dark count rate threshold; and
prevent, based on the determining that the noise level meets the predetermined threshold, an output of the photodetector from being used in generating a histogram based on a temporal distribution of photons detected by the array of photodetectors, the preventing comprising switching the output to a monitoring circuit that monitors a characteristic of the optical measurement system separate from the photodetector.