Position detection method, position detector, and integrated circuit

Abstract

A position detecting method in a position detector is provided. The position detector includes a first sensor coil group and a second sensor coil group. The position detecting method includes a first step of the position detector generating an alternating magnetic field from the first sensor coil group; a second step of the position detector obtaining a level of a pen signal which a pen, having stored the alternating magnetic field, generates as a response alternating magnetic field, by using at least the second sensor coil group; and a third step of the position detector deriving information regarding a position of the pen by using a two-dimensional distribution of the level of the pen signal at each of points of intersection of the plurality of electrodes of the first sensor coil group and the plurality of electrodes of the second sensor coil group.