US 11,726,609 B2
Touch-sensitive apparatus and method
Peter Timothy Sleeman, Fareham (GB); and Stephen William Roberts, Fareham (GB)
Assigned to TouchNetix Limited, Fareham/Hampshire (GB)
Appl. No. 17/615,672
Filed by TouchNetix Limited, Fareham (GB)
PCT Filed Jun. 8, 2020, PCT No. PCT/EP2020/065876
§ 371(c)(1), (2) Date Dec. 1, 2021,
PCT Pub. No. WO2020/249525, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 1908243 (GB), filed on Jun. 10, 2019.
Prior Publication US 2022/0236868 A1, Jul. 28, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); G06F 3/047 (2006.01)
CPC G06F 3/041662 (2019.05) [G06F 3/047 (2013.01); G06F 3/0412 (2013.01); G06F 3/0446 (2019.05)] 16 Claims
OG exemplary drawing
 
1. A touch-sensitive apparatus, the apparatus comprising:
a touch-sensitive element comprising an array of electrodes having a first electrode and a second electrode, the second electrode spatially intersecting the first electrode at an intersection point; and
measurement circuitry configured to:
measure the mutual capacitance at the intersection point of the first and second electrodes;
measure the self-capacitance of the first electrode, and
measure the self-capacitance of the second electrode; and
processing circuitry configured to:
determine the presence of a touch on the touch-sensitive element on the basis of a comparison of the measured mutual capacitance at the intersection point to a first threshold and on the basis of a combination of the measured self-capacitance of the first electrode and the measured self-capacitance of the second electrode being greater than or equal to a second threshold.