Patent ID: 11868561
Assignee: CYPRESS SEMICONDUCTOR CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. The apparatus of claim 18, further comprising:
a signal source;
in-phase circuitry coupled to the signal source and to generate the in-phase drive signal;
opposite-phase circuitry coupled to the signal source and to generate the opposite-phase drive signal, and wherein the selection circuitry comprises:
a first set of multiplexers configured to couple to the first set of receiver electrodes at the first stage, wherein each of the first set of receiver electrodes is coupled to the in-phase circuitry, the opposite-phase circuitry, and the reference or ground potential; and
a second set of multiplexers configured to couple to the second set of receiver electrodes at the second stage, wherein each of the second set of receiver electrodes is coupled to the in-phase circuitry, the opposite-phase circuitry, and the reference or ground potential, and wherein the first set of receiver electrodes and the second set of receiver electrodes comprises a common electrode.