Patent application number | Description | Published |
20090015385 | METHOD AND DEVICE FOR INCREASED RFID TRANSMISSION SECURITY - A method and system for secure RFID system communication is provided. The RFID system comprises an RFID reader ( | 01-15-2009 |
20100007467 | DEVICE, SYSTEM AND METHOD FOR COMPENSATING SIGNAL DELAYS IN AN RFID COMMUNICATION SYSTEM - An RFID communication system comprises an NFC device ( | 01-14-2010 |
20100056053 | SINGLE COMMUNICATION CHANNEL BETWEEN A CONTACTLESS FRONTEND DEVICE AND A TRANSCEIVER DEVICE - Method for exchanging data between an NFC device ( | 03-04-2010 |
20110068905 | READER AND TRANSPONDER FOR OBSCURING THE APPLICATIONS SUPPORTED BY A READER AND/OR A TRANSPONDER AND METHOD THEREOF - Transponder ( | 03-24-2011 |
20110078549 | DECOUPLING OF MEASURING THE RESPONSE TIME OF A TRANSPONDER AND ITS AUTHENTICATION | 03-31-2011 |
20110091038 | SYSTEM OF PROVIDING A FIXED IDENTIFICATION OF A TRANSPONDER WHILE KEEPING PRIVACY AND AVOIDING TRACKING - Transponder ( | 04-21-2011 |
20120229260 | METHOD OF READING A PLURALITY OF NON-CONTACT DATA CARRIERS, INCLUDING AN ANTI-COLLISION SCHEME - In a method of inventorying data carriers by means of a communication station, whereby the communication station and each data carrier are brought into communicative connection, and each data carrier brought into communicative connection with the communication station is capable of generating a response signal that renders possible an inventorying of the data carrier and is capable of delivering a generated response signal with the use of a transmission start moment that can be selected from a plurality of transmission start moments, each data carrier tests whether another data carrier is already giving its response signal. Each data carrier subsequently discontinues the generation or delivery of its response signal if another data carrier is already providing its response signal. | 09-13-2012 |
20140055246 | NON-CONTACT DATA CARRIERS INCLUDING AN ANTI-COLLISION SCHEME - Data carriers for inventorying by means of a communication station, whereby the communication station and each data carrier are brought into communicative connection, and each data carrier brought into communicative connection with the communication station is configured to generate a response signal that renders possible an inventorying of the data carrier and is capable of delivering a generated response signal with the use of a transmission start moment that can be selected from a plurality of transmission start moments, each data carrier tests whether another data carrier is already giving its response signal. Each data carrier is configured to discontinue the generation or delivery of its response signal if another data carrier is already providing its response signal. | 02-27-2014 |
20140145513 | WIRELESSLY POWERED DEVICES - A circuit for delivering power to a load from a wireless power supply comprises an inductor coil for placing in the electromagnetic field of an inductor coil of a supply and a switchable capacitor bank with capacitors switchable at least between a series and a parallel configuration. The voltage across the capacitor bank is used as a feedback control parameter for controlling the capacitor bank switching. A voltage regulator is used to supply the load with a constant voltage power supply derived from the capacitor bank output. | 05-29-2014 |
20140218176 | WIRELESS COMMUNICATIONS USING ACTIVE MODULATION - A method of wireless communication, with a circuit that includes a radio frequency identification (RFID) reader, can be carried out using a circuit that is configured and arranged to communicate with RFID cards that use load modulation of an RF carrier provided by the RFID reader. A presence of the radio frequency (RF) carrier is detected on an antenna. A local clock signal is generated. A difference between the local clock signal and the RF carrier is detected. In response to the detected difference, the frequency of the local clock signal is modified to reduce the detected difference. Load modulation of the RF carrier is mimicked by modulating the local clock signal to encode data; and driving the antenna with the modulated local clock signal. | 08-07-2014 |