Apparatus for detecting the coordinate position of a contact point on touch panel
First Claim
1. An apparatus for detecting a coordinate position of a contact point in a touch panel including a first resistance layer having first and second electrodes opposed in an X direction and a second resistance layer having first and second electrodes opposed in a Y direction, said first resistance layer and said second resistance layer being opposed in a Z direction, said apparatus comprising:
- voltage application means for applying an application voltage to said first and second electrodes of said first resistance layer when said apparatus is in an input stand-by state;
resistance means for applying a resistance between one of said first electrode and second electrode of a second resistance layer and ground when said apparatus is in said input stand-by state;
voltage detection means for detecting an induced voltage induced to a remaining one of said first and second electrodes of said second resistance layer when said first resistance layer and said second resistance layer contact with each other in an event of a depressing operation; and
control means for controlling a transition from said input stand-by state to another state in which an operation for detecting said coordination position is executed, when said induced voltage is induced to said remaining one of said first and second electrodes.
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Accused Products
Abstract
In an apparatus for detecting a coordinate position of a contact point in a touch panel, a resistance layer having a pair of electrodes opposed in a X direction and another resistance layer having a pair of electrodes opposed in a Y direction are opposed in a Z direction. The apparatus includes the following units. A unit for applying a voltage to the pair of electrodes of one resistance layer when the apparatus is in an input stand-by state. A resistance connecting an electrode of the other resistance layer to earth when the apparatus is in the input stand-by state. A unit for detecting a voltage induced to the other electrode of the other resistance layer when the resistance layers contact with each other in an event of a depressing operation. A unit for controlling the transition from the input stand-by state to another state in which an operation for detecting the coordination position is executed, when the voltage is induced to the other electrode of the other resistance layer.
51 Citations
5 Claims
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1. An apparatus for detecting a coordinate position of a contact point in a touch panel including a first resistance layer having first and second electrodes opposed in an X direction and a second resistance layer having first and second electrodes opposed in a Y direction, said first resistance layer and said second resistance layer being opposed in a Z direction, said apparatus comprising:
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voltage application means for applying an application voltage to said first and second electrodes of said first resistance layer when said apparatus is in an input stand-by state; resistance means for applying a resistance between one of said first electrode and second electrode of a second resistance layer and ground when said apparatus is in said input stand-by state; voltage detection means for detecting an induced voltage induced to a remaining one of said first and second electrodes of said second resistance layer when said first resistance layer and said second resistance layer contact with each other in an event of a depressing operation; and control means for controlling a transition from said input stand-by state to another state in which an operation for detecting said coordination position is executed, when said induced voltage is induced to said remaining one of said first and second electrodes. - View Dependent Claims (2, 3, 4, 5)
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Specification