Patent ID: 8395598

Claim:
A position detection apparatus, comprising: a first position detection circuit including a first sensor formed of a first set of conductors disposed in a first direction and a second set of conductors disposed in a direction different from the first direction, a first conductor selection circuit connected to said first sensor and configured to select the first set of conductors in accordance with a transmission conductor selection sequence, and an oscillation circuit configured to supply a signal to the first set of conductors through said first conductor selection circuit, the first position detection circuit being configured to detect a position pointed to by a first pointer on said first sensor; a second position detection circuit including a second sensor formed of a third set of conductors disposed in substantially the same direction as the first direction and a fourth set of conductors disposed in a direction different from the first direction, the second sensor being disposed in a superposed relationship with said first sensor, and a second conductor selection circuit connected to said second sensor and configured to select the third set of conductors disposed in substantially the same direction as the first direction in accordance with a reception conductor selection sequence, the second position detection circuit being configured to detect a position pointed to by a second pointer on said second sensor; and a control circuit configured to direct said first conductor selection circuit to select a transmission conductor selection position among the first set of conductors where the first pointer is detected, and to direct said second conductor selection circuit to select a reception conductor selection position among the third set of conductors where the second pointer is detected, such that the selected transmission conductor selection position and the selected reception conductor selection position are separated from each other by a predetermined spatial distance.