Method and apparatus for touch detection based on the current fl

Details Method and apparatus for touch detection based on the current fl Method and apparatus for touch detection based on the current fl

1997-09-12

2000-10-31

Williams, Hezron

Measuring and testing

Touch or taste

734321, 738658, 738659, 345173, G01N 3300

Patent

active

061385239

ABSTRACT:
A method and apparatus for determining when an approaching object has contacted a sensor panel. The method includes the steps of (a) using a controller which is connected to the sensor panel, (b) determining a value for the approaching object based on a current flow between the sensor panel and the controller, (c) repeating step (b) until the value has reached a maximum value, and (d) generating a signal when the value has reached the maximum value to indicate that the object is contacting the sensor panel.

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