Patent ID: 8203430
Filing Date: 2012-06-19
Classification: G06K

Abstract:
1. A device for compensating signal delays in an RFID communication system, the device comprising: an NFC device coupled to an antenna to receive electromagnetic signals from an RFID reader/writer and to transmit response signals to the RFID reader/writer by modulating received electromagnetic signals, wherein the electromagnetic signals contain first and second characteristic components which define the begin and the end of a predefined signal pattern, wherein the NFC device is configured and arranged to transmit the response signals to the RFID reader/writer after a predefined response delay time, in response to the second characteristic component; a signal pattern shortening circuit configured and arranged to compensate for signal delays by shortening the signal pattern of the received signal; and a smart card with contactless card functionality, wherein the NFC device and the smart card are coupled to each other via a protocol converter, the signal pattern shortening circuit being configured and arranged to provide the received signal with the shortened signal pattern to the smart card via the protocol converter.