Methods and systems for improving touch sensitivity of touch-based devices

摘要

The present disclosure discloses methods and systems for improving touch detection of a touch screen device. The method includes determining touch coordinates when the touch screen device is touched. Subsequently, a sampling time is adjusted, depending on the touch coordinates relative to initial coordinates of the touch screen device.

主权项

1. A method for improving touch detection of a resistive touch screen device, the method comprising:
determining touch coordinates when the resistive touch screen device is touched, wherein touch coordinates are determined by measuring a voltage that has a settling time dependent on the touch coordinates relative to initial coordinates of the resistive touch screen device, wherein the voltage is provided by the resistive touch screen device as an input signal to an analog to digital converter, wherein the analog to digital converter comprises a sampling capacitor and further receives a reference voltage, wherein during conversion the reference voltage is compared to a voltage on the sampling capacitor; and adjusting a sampling time for the sampling capacitor depending on the touch coordinates relative to initial coordinates of the resistive touch screen device.