Patent ID: 8670710
Filing Date: 2014-03-11
Classification: G06K,H04B,H04L,H04M

Abstract:
1. A communications device, comprising: a universal integrated circuit card (UICC) configured to provide a single wire protocol (SWP) current signal at a first level or at a second level; a filter configured to filter noise from the SWP current signal when the SWP current signal is at the second level; a near field communications (NFC) device configured to receive the SWP current signal from the UICC, wherein the SWP current signal received is a filtered SWP current signal when at the second level; a first switch configured to provide the SWP current signal at the second level to the filter when the first switch is in a conductive state; and a second switch configured to precharge the filter when the SWP current signal is at the first level and the second switch is in a conductive state.