A grid-shaped array of conductor areas is used for capacitive image acquisition. Shielding conductors are disposed in each case between the conductors that are provided for measurement. During a plurality of charging and discharging cycles, the potential is always carried along on the conductors belonging...http://www.google.fr/patents/US6365888?utm_source=gb-gplus-shareBrevet US6365888 - Method for capacitive image acquisition
