US 12,449,899 B2
Techniques for selecting skin-electrode interface modulation modes based on sensitivity requirements and providing adjustments at the skin-electrode interface to achieve desired sensitivity needs and systems and methods of use thereof
Eric VanWyk, Seattle, WA (US); Filipp Demenschonok, Bothell, WA (US); Pinghung Wei, Kirkland, WA (US); Brendan Patrick Flynn, Redmond, WA (US); and Zidong Li, Redmond, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Dec. 22, 2023, as Appl. No. 18/395,323.
Claims priority of provisional application 63/497,387, filed on Apr. 20, 2023.
Claims priority of provisional application 63/476,901, filed on Dec. 22, 2022.
Prior Publication US 2024/0211045 A1, Jun. 27, 2024
Int. Cl. G06F 3/01 (2006.01); G06F 11/30 (2006.01)
CPC G06F 3/015 (2013.01) [G06F 11/3041 (2013.01); G06F 11/3058 (2013.01); G06F 3/017 (2013.01); G06F 2201/86 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wrist-wearable device for sensing biopotential signals comprising:
a plurality of biopotential-signal sensors, each respective biopotential-signal sensor configured to contact a user's skin at a respective sensor-skin interface and further configured to sense biopotential signals of the user;
a first impedance-stabilizing component associated with at least a first biopotential-signal sensor of the plurality of biopotential-signal sensors, the first impedance-stabilizing component configured to direct a stimulation to a first sensor-skin interface associated with the first biopotential-signal sensor until an impedance value at the first sensor-skin interface is within a first desired range, the stimulation being compliant with a predefined safety standard; and
a second impedance-stabilizing component associated with at least a second biopotential-signal sensor of the plurality of biopotential-signal sensors, the second impedance-stabilizing component configured to direct another stimulation to a second sensor-skin interface, distinct from the first sensor-skin interface, associated with the second biopotential-signal sensor until an impedance value at the second sensor-skin interface is within a second desired range, the other stimulation being compliant with the predefined safety standard.