Patent ID: 11965923
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. The method of claim 12 wherein the third self-test includes:
generating, by the electrostatic charge variation sensor, a first electrostatic charge variation measurement;
applying the asynchronous signal to the stimulus electrode in a case where the first electrostatic charge variation measurement is less than a first threshold value;
generating, by the electrostatic charge variation sensor, a second electrostatic charge variation measurement in response to the asynchronous signal being applied to the stimulus electrode;
determining the electrostatic charge variation sensor passed the third self-test in a case where a parameter of the second electrostatic charge variation measurement is within a second threshold value of a parameter of the first electrostatic charge variation measurement; and
determining the electrostatic charge variation sensor failed the third self-test in a case where the parameter of the second electrostatic charge variation measurement is not within the second threshold value of the parameter of the first electrostatic charge variation measurement.