Apparatus for detecting the coordinate position of a contact point on touch panel

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.