Patent ID: 9495566
Filing Date: 2016-11-15
CPC Classification: G06F,G06K

Claim Text:
1. A method for interaction of a portable data carrier with an end device, wherein the data carrier comprises a transducer arrangement having at least one or a set of capacitive transducer elements arranged on or in the data carrier at defined positions in relation to the geometry of the data carrier, and the data carrier is supplied with energy; wherein the end device comprises a capacitive display screen having a touch-sensitive display, wherein the method comprises placing the data carrier onto the display screen and generating via the capacitive transducer elements signals picked up and evaluated as input signals by the end device, making available the energy required for driving the transducer elements by transmission from the end device via a contactless interface through inductive coupling, and the end device derives an exact position of the data carrier on the display screen through evaluation of the input signals, and performing, via the at least one or set of transducer elements, a signal exchange from the display screen to the data carrier, by test signal sequences being generated location-dependently through the display screen, said sequences being detected by the transducer elements operated as sensors, and evaluated as input signals through the data carrier.