Patent ID: 9697450
Date: 2017-07-04
CPC Classifications: G06K

Claim:
1. A magnetic stripe data transmission (MST) driver configured to transmit magnetic strip data including a stream of pulses, the MST driver comprising: a pair of high side switches comprising a first switch and a second switch; a pair of low side switches comprising a third switch and a fourth switch; the first, second, third and fourth switches being arranged in a full bridge type configuration connected across a voltage source and a ground; an inductive coil connected across outputs of the full bridge type configuration of the switches; and a switch driver configured to drive the pair of low side switches and the pair of high side switches so as to control load current slopes of load current rising and falling portions of a load current to generate a back electromagnetic force emulating the magnetic strip data during the load current rising and falling portions through the inductive coil.