Patent ID: 11861072
Assignee: APPLE INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A wearable device, comprising:
a device housing configured to be worn by a user;
a set of self-mixing interferometry (SMI) sensors mounted within the device housing and configured to:
emit a set of beams of electromagnetic radiation; and
generate a set of SMI signals containing information about the user in relation to a surface; and

a processor configured to,
generate sets of digitized samples for the SMI signals in the set of SMI signals;
analyze the sets of digitized samples;
identify, based at least in part on the analyzing, at least one SMI signal, in the set of SMI signals, from which to extract the information about the user in relation to the surface; and
extract the information about the user in relation to the surface from the digitized samples of the at least one SMI signal.