CPC G06F 3/04166 (2019.05) [G06F 3/044 (2013.01); G06F 3/04186 (2019.05); G06F 2203/04104 (2013.01)] | 17 Claims |
1. A multitouch touch device (DIS) employing capacitive detection comprising:
a touch matrix array;
a first voltage generator configured to generate for each row and each column of said matrix array, a first input voltage having a first frequency leading to the generation of a first output voltage, a second voltage generator configured to generate, for each intersection between at least two rows and two columns of said matrix array a second input voltage having a second frequency different from said first frequency leading to the generation of a second output voltage; and
a processing circuit configured to determine, depending on first and second reference values, whether said first and second output voltages are representative of a press and of its position.
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