TOUCH PANEL DEVICE OPERABLE BY MULTIPLE USERS AND A METHOD FOR CONTROLLING THE TOUCH PANEL
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United States of America Patent
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Issued Date -
Aug 27, 2009
app pub date -
Apr 17, 2008
filing date -
Feb 26, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A touch panel device has a capacitive touch panel, a current sensing unit, a control unit and a switch. The control unit computes a coordinate of a press position based on current changes occurring at all corners of the touch panel, and provides an AC signal being output through multiple output terminals of the switch in turn. When the AC signal is applied to different users and then conducted to the touch panel, the control unit recognizes which user is pressing the touch panel. Therefore, the touch panel device has the capability of being operated my multiple users.
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