Patent ID: 9031505
Filing Date: 2015-05-12
Classification: G06K,H04B,H04L,H04M

Abstract:
1. An integrated circuit for use in a communications device, the integrated circuit comprising: a single wire protocol (SWP) interface circuit configured to receive a SWP signal; a filter configured to filter the SWP signal in a first mode of operation and to be precharged in a second mode of operation; a first switch configured to provide the SWP signal to the filter in the first mode of operation; a second switch configured to precharge the filter in the second mode of operation; a controller configured to transition the communications device from the second mode of operation to the first mode of operation based upon a characteristic of the SWP signal; and a near field communications (NFC) device configured to receive the filtered SWP signal in the first mode of operation.