Method and device for detecting terminal connection of 4-terminal or 5-terminal resistive touch panel
AssigneeEgalax_Empia Technology Inc.
InventorsShang-Tai Yeh, Chia-Ling Sun
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Abstract
A device and method for detecting connections of a 4- or 5-terminal resistive touch panel are disclosed. The device includes five terminals and a detecting unit. When the five terminals are connected to the touch panel, the detecting unit provides a high potential and a low potential to first and last of the five terminals, respectively, thereby determining whether the touch panel is a 4- or 5-terminal resistive touch panel by determining if there is a closed circuit between the two terminals.
Claims20
A device for detecting connections of a 4-terminal resistive touch panel, comprising:
- five terminals arranged in parallel comprising a first, a second, a third, a fourth and a fifth terminal, wherein four neighboring terminals of the five terminals are connected to a touch panel;
- and
- a detecting unit, comprising:
- providing one of first high and low potentials to one of the four neighboring terminals, and sequentially or simultaneously providing the other one of the first high and low potentials to the other three of the four neighboring terminals;
- when providing the first high and low potentials, determining whether the 4-terminal resistive touch panel is connected to the first or last four terminals of the five terminals based on whether there is a closed circuit between the terminals provided with the first high and low potentials.
A method for detecting connections of a 4-terminal resistive touch panel, comprising:
- connecting a 4-terminal resistive touch panel to four neighboring terminals of five terminals arranged in parallel;
- and
- providing one of first high and low potentials to one of the four neighboring terminals and simultaneously or sequentially providing the other one of the first high and low potentials to the other three of the four neighboring terminals;
- when providing first high and low potentials, determining whether the 4-terminal resistive touch panel is connected to the first four or last four of the five terminals based on whether there is an open or closed circuit between the terminals provided with the first high and low potentials.
Dependencies are inferred from the claim text.