Patent ID: 11914831
Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 2:
3. The system of claim 2, wherein:
the phased switch controller controls the second one or more switches, for the second time period, to discharge the self-capacitor by coupling the self-capacitor with the ramp-controlled current source via an input voltage node until the input voltage node is at an input voltage level corresponding to the discharge level, such that the input voltage level corresponds to a reference voltage level in absence of the local touch event on the touch panel, and such that the input voltage level is different from the reference voltage level in presence of the local touch event on the touch panel; and
the phased switch controller controls the third one or more switches, for the third time period, to output the sense signal by amplifying a difference between the input voltage level and the reference voltage level.