The present invention relates to an input apparatus and to a method for detecting a contact position of an input apparatus. The apparatus comprises: a touch panel including a plurality of first touch patterns arranged in a first direction to generate a first contact signal according to a contact position in the first direction, and a plurality of second touch patterns arranged in a second direction perpendicular to the first direction to generate a second contact signal according to a contact position in the second direction; and a touch sensor for calculating coordinates of the contact position according to the first and second contact signals, and storing the coordinates of the contact position over time, wherein, when there are at least two contact positions and a time difference between contact times of the two or more contact positions is greater than a reference value, the touch sensor performs a first sensing operation for detecting the coordinates of actual contact positions by using previously stored contact position coordinates, and when the time difference is less than or equal to the reference value, the touch sensor performs a second sensing operation for detecting the coordinates of the actual contact positions by using the impedance of the touch patterns that vary according to the contact positions.