Anirban Chatterjee

US Patent:

20220401025, Dec 22, 2022

Filed:

Aug 22, 2022

Appl. No.:

17/821433

Inventors:

- Cupertino CA, US
Thomas J. SULLIVAN - San Jose CA, US
Xiaoyu GUO - Santa Clara CA, US
Paras SAMSUKHA - San Jose CA, US
Anirban CHATTERJEE - San Jose CA, US

International Classification:

A61B 5/00
A61B 5/24

Abstract:

Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.

US Patent:

20200077954, Mar 12, 2020

Filed:

Sep 9, 2019

Appl. No.:

16/565090

Inventors:

- Cupertino CA, US
Thomas J. SULLIVAN - San Jose CA, US
Xiaoyu GUO - Santa Clara CA, US
Paras SAMSUKHA - San Jose CA, US
Anirban CHATTERJEE - San Jose CA, US

International Classification:

A61B 5/00

Abstract:

Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.

US Patent:

20190064983, Feb 28, 2019

Filed:

Aug 24, 2017

Appl. No.:

15/686087

Inventors:

- Cupertino CA, US
Anirban Chatterjee - Santa Clara CA, US

International Classification:

G06F 3/041
G06F 3/044
G02F 1/1333
G02F 1/1343

Abstract:

An electronic device includes a surface such as a cover glass, a first group of electrodes coupled to the surface and arranged in a first direction with respect to the surface, a second group of electrodes coupled to the surface and arranged in a second direction with respect to the surface, a dielectric separating the first and second groups of electrodes, and a controller electrically connected to the first and second groups of electrodes. The controller is operable to detect a touch of an object to the surface using a mutual capacitance between the first and second groups of electrodes and determine a non-binary amount of force exerted based on resistances of the first and second groups of electrodes.