Systems and methods for spike suppression for dynamic magnetic stripe communications devices

摘要

Dynamic magnetic stripe communications devices are provided as magnetic stripe emulators on a card or device having one or more communication channels. An application specific integrated circuit (ASIC) may include one or more waveform generators that include spike suppression circuitry to reduce excessive signal excursions during power-up and/or activation of the one or more communication channels on the card or device. Data to be communicated by the magnetic stripe emulator may be encoded within the one or more waveforms and communicated to a magnetic stripe reader.

主权项

1. A wireless device comprising:
a dynamic magnetic stripe communications device operable to communicate a waveform encoded with a magnetic stripe data track to complete a purchase transaction; and an ASIC including spike suppression circuitry coupled to said dynamic magnetic stripe communications device, said spike suppression circuitry including a power-up detector operable to detect a magnitude of an operational signal of said wireless device, wherein said spike suppression circuitry is operable to prohibit data signals from being communicated by said dynamic magnetic stripe communications device until said magnitude of said operational signal is about a threshold value.