Patent ID: 9235305
Filing Date: 2016-01-12
CPC Classification: G06F

Claim Text:
1. A coordinate position detection apparatus, comprising: a plurality of sensor electrodes; a plurality of capacitance detectors each connected with the plurality of sensor electrodes and including integration circuits; a coordinate computer; a coordinate pointing device including a first oscillator circuit; a selector switch; and a second oscillator circuit, wherein, when the apparatus is in a first input mode where the coordinate pointing device inputs a coordinate position: the plurality of sensor electrodes include: the selector switch is provided between the plurality of sensor electrodes and the second oscillator circuit and the at least one of the plurality of capacitance detectors, and is configured to switch between the at least one of the plurality of capacitance detectors and the second oscillator circuit for connection to the second sensor electrode, and when the apparatus is in a second input mode where a coordinate position is input by an alternative coordinate pointing device other than the coordinate pointing device, the selector switch causes the second sensor electrode to be connected with the second oscillator circuit, the at least one of the plurality of capacitance detectors which is connected to the first sensor electrode detects a signal provided by the second oscillator circuit, the second oscillator circuit performs charging and the at least one of the plurality of capacitance detectors which is connected to the first sensor electrode performs integration during the unit detection period to measure capacitances, and based on the capacitances measured, the coordinate computer determines the coordinate position.