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

Claim 13:
14. The method of claim 12 wherein the second self-test includes:
generating, by the electrostatic charge variation sensor, a first electrostatic charge variation measurement;
applying the synchronous pulse signal to the stimulus electrode in a case where the first electrostatic charge variation measurement is less than a threshold value;
generating, by the electrostatic charge variation sensor, a second electrostatic charge variation measurement in response to the synchronous pulse signal being applied to the stimulus electrode;
determining the electrostatic charge variation sensor passed the second self-test in a case where the second electrostatic charge variation measurement is offset from the first electrostatic charge variation measurement; and
determining the electrostatic charge variation sensor failed the second self-test in a case where the second electrostatic charge variation measurement is not offset from the first electrostatic charge variation measurement.