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

Claim 6:
7. A method comprising:
generating an in-phase drive signal and an opposite-phase drive signal;
applying, to each of a set of transmitter electrodes, a signal;
selecting a sequence having a number of one values, negative one values, and zero values, wherein the one values correspond to the in-phase drive signal, the negative one values correspond to the opposite-phase drive signal, and the zero values correspond to a reference signal, wherein the reference signal is from a voltage potential or a ground potential, and wherein a sum of the sequence is equal to zero;
sensing, at a substantially same time at each of a first set of receiver electrodes at a first stage of a plurality of scanning stages, (i) one of the in-phase drive signal or the opposite-phase drive signal and (ii) the reference signal according to the sequence;
rotating the sequence to obtain a rotated sequence; and
sensing, at a substantially same time at each of a second set of receiver electrodes at a second stage of the plurality of scanning stages, (i) one of the in-phase drive signal or the opposite-phase drive signal and (ii) the reference signal according to the rotated sequence.