| 发明名称 |
Pseudo Driven Shield |
| 摘要 |
In one embodiment, a touch-sensitive device includes a controller, horizontal electrodes, and vertical electrodes. The touch-sensitive device further includes a first plurality of switches that couple the horizontal electrodes to a first plurality of sensors, a second plurality of switches that couple the vertical electrodes to a second plurality of sensors, and a third and fourth plurality of switches that couple the horizontal and vertical electrodes to a shield sensor. The controller is operable to perform simultaneous hovering, touch, and proximity detection by selectively controlling the first, second, third, and fourth plurality of switches. The hovering, touch, and proximity detection includes causing substantially equal voltages to be present on the horizontal and vertical electrodes while measuring capacitances using the shield sensor and either the first or second plurality of sensors. |
| 申请公布号 |
US2015002448(A1) |
申请公布日期 |
2015.01.01 |
| 申请号 |
US201313930754 |
申请日期 |
2013.06.28 |
| 申请人 |
Brunet Samuel;Collins Richard Paul;Hristov Luben Hristov;Myren Steinar;Pedersen Trond Jarle;Stavely Paul |
发明人 |
Brunet Samuel;Collins Richard Paul;Hristov Luben Hristov;Myren Steinar;Pedersen Trond Jarle;Stavely Paul |
| 分类号 |
G06F3/041;G06F3/044 |
主分类号 |
G06F3/041 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A touch sensor for a touch-sensitive device comprising:
a controller; a plurality of horizontal electrodes; a plurality of vertical electrodes; a first plurality of switches operable to electrically couple the plurality of horizontal electrodes to a first plurality of sensors; a second plurality of switches operable to electrically couple the plurality of vertical electrodes to a second plurality of sensors; a third plurality of switches operable to electrically couple the plurality of horizontal electrodes to a shield sensor; and a fourth plurality of switches operable to electrically couple the plurality of vertical electrodes to the shield sensor; wherein the controller is operable to perform simultaneous hovering, touch, and proximity detection by selectively controlling the first, second, third, and fourth plurality of switches, the hovering, touch, and proximity detection comprising causing substantially equal voltages to be present on the plurality of horizontal and vertical electrodes while measuring capacitances using the shield sensor and either the first or second plurality of sensors. |
| 地址 |
Cowes GB |
