Patent ID: 11899876
Assignee: TOUCHNETIX LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The touch-sensitive apparatus of claim 1, wherein the plurality of drive electrodes further includes third and fourth drive electrodes, and wherein the control circuitry is configured to:
perform a first measurement on the at least one receiver electrode during a first time period, wherein the control circuitry is configured to supply the first time-varying voltage signal to the first drive electrode and the second time-varying voltage signal to the second, third and fourth drive electrodes during the first time period;
perform a second measurement on the at least one receiver electrode during a second time period, wherein the control circuitry is configured to supply the first time-varying voltage signal to the second drive electrode and the second time-varying voltage signal to the first, third and fourth drive electrodes during the second time period;
perform a third measurement on the at least one receiver electrode during a third time period, wherein the control circuitry is configured to supply the first time-varying voltage signal to the third drive electrode and the second time-varying voltage signal to the first, second and fourth drive electrodes during the third time period;
perform a fourth measurement on the at least one receiver electrode during a fourth time period, wherein the control circuitry is configured to supply the first time-varying voltage signal to the fourth drive electrode and the second time-varying voltage signal to the first, second and third and drive electrodes during the second time period;
determine the resultant signal corresponding to the mutual capacitance between the first electrode and the at least one receiver electrode based on the first measurement, the second measurement, the third measurement and the fourth measurement;
determine a resultant signal corresponding to the mutual capacitance between the second electrode and the at least one receiver electrode based on the first measurement, the second measurement, the third measurement and the fourth measurement;
determine a resultant signal corresponding to the mutual capacitance between the third electrode and the at least one receiver electrode based on the first measurement, the second measurement, the third measurement and the fourth measurement; and
determine a resultant signal corresponding to the mutual capacitance between the fourth electrode and the at least one receiver electrode based on the first measurement, the second measurement, the third measurement and the fourth measurement.