Abstract:
The communication method with the POS terminal that improves transmission characteristics of the authorized payment from the mobile communication device (9) is based upon a fact that the frequency converter (1) on that side of the communication channel where the POS terminals NFC antenna (8) is. The frequency converter (1) receives and processes the signal from the POS terminals NFC antenna (8) on the 13.56 MHz frequency, sends it on a higher frequency into the mobile communication device (9) and vice versa. The frequency converter (1) is outwardly energetically passive and is power supplied from the electromagnetic field received from the POS terminals antenna (8). The frequency converter (1) contains an antenna, tuned to the frequency in the range of 13.00 to 14.00 MHz, that is connected to the power supply element (4). The frequency converter (1) is located in the proximity of the POS terminal's antenna.
Abstract:
Exemplary embodiments are directed to wireless power transfer. A transmitting device or a receiving device for use in a wireless transfer system may be equipment or a household appliance. The transmitting device includes a transmit antenna to wirelessly transfer power to a receive antenna by generating a near field radiation within a coupling-mode region. An amplifier applies an RF signal to the transmit antenna. A presence detector detects a presence of a receiver device within the coupling-mode region. A controller adjusts a power output of the amplifier responsive to the presence of a receiver device. The presence detector may also detect a human presence. The power output may be adjusted at or below the regulatory level when the presence signal indicates human presence and above a regulatory level when the presence signal indicates human absence.
Abstract:
L'invention concerne un procédé de communication de données avec un dispositif électronique, comprenant l'étape de réception de signaux véhiculés par un conducteur électrique de liaison (3); Le procédé se distingue en ce qu'il comprend les étapes suivantes: - mise en place d'une interface radiofréquence RF à contacts électriques LA, LB dans le dispositif, - extraction des signaux hors du conducteur électrique de liaison, - et injection des signaux résultant des signaux extraits, sous forme de trames de signaux radiofréquences dans l'interface RF à contacts électriques. L'invention concerne également un dispositif de communication radiofréquence, un système comportant le dispositif et une machine utilisant le dispositif.
Abstract:
The present invention relates to a contactless converter device (CDV) comprising an H-field antenna (AC2) configured so as to receive an external magnetic field (MFLD) and an E-field active antenna (ATl) configured so as to emit or receive an electric field (EFLD, EFLD') - the device is configured so as to send by way of the E-field antenna (ATl) data received by way of the H-field antenna (AC2), and to send by way of the H-field antenna(AC2) data received by way of the E-field antenna (ATl).
Abstract:
An integral detection and identification system for detecting and identifying an object includes an identification transponder and a presence/absence transponder. The identification transponder includes a first inductive winding wound about a core and electrically coupled to an integrated circuit to transmit an identification signal in response to receipt of an interrogation signal in a first frequency range. The identification signal encodes an identifier stored by the integrated circuit. The presence/absence transponder includes a resonant inductive/capacitive tank circuit having at least a second inductive winding wound about a core and electrically coupled to a capacitor to transmit a presence/absence signal in response to an interrogation signal in a second frequency range. The presence/absence response signal lacks unique identifying information and is physically coupled to the identification transponder to form an integral detection and identification transponder that can selectively be attached to the object.
Abstract:
A transponder (140) for communicating with a reader device (120), the transponder (140) comprising a processing unit (142) adapted for generating an identifier (210) during an initialization phase of a communication session with the reader device (120), the identifier (210) being generated as a combination of a first part (214) being a random number and of a second part (212) being identical to a portion (202) of a previous identifier (200) used during a previous communication session preceding the present communication session with the reader device (120), and a transmission unit (136) adapted for transmitting the identifier (210) to the reader device (120).
Abstract:
Exemplary embodiments are directed to wireless power transfer. A wireless power transceiver and device comprise an antenna including a parallel resonator configured to resonate in response to a substantially unmodulated carrier frequency. The wireless power transceiver further comprises a bidirectional power conversion circuit coupled to the parallel resonator. The bidirectional power conversion circuit is reconfigurable to rectify an induced current received at the antenna into DC power and to induce resonance at the antenna in response to DC power.
Abstract:
A method for improving RFID readers includes transmitting an outgoing RF signal to an antenna through a directional device, and generating a demodulated vector signal from an RF signal related to the RF signal received from the receiver. The method also includes setting the impedance of a controllable-variable-reflectance element with control-parameters from a memory circuit. The memory circuit includes a look up table having therein a corresponding relationship between the control-parameters and an error vector related to the demodulated vector signal.
Abstract:
Die Erfindung betrifft eine Vorrichtung (12), ein System und ein Verfahren zum Rücknehmen und Zerstören von gebrauchten, kartenf örmigen Datenträgern, wie zum Beispiel Chipkarten, Magnetstreifenkarten und dergleichen. Die Vorrichtung (12) umfasst eine Eingabeeinrichtung (1) zum Eingeben eines zu zerstörenden Datenträgers durch einen Verwender des Daten- trägers, eine Zerstörungseinrichtung zum Zerstören des eingegebenen Datenträgers und mindestens einen Behälter (5) zum Aufnehmen von zumindest Teilen des zerstörten Datenträgers. Der mindestens eine Behälter (5) ist für den Verwender unzugänglich.
Abstract:
Several embodiments provide methods and apparatus to improve communications between an RFID reader (12) and one or more RFID tags (14). In one implementation, an apparatus (33) comprises a first antenna (36) configured to communicate with a radio frequency identification (RFID) reader (12); a second antenna (37) electrically separate from said first antenna, and configured to communicate with at least one RFID tag (14); and structure (38) electrically coupling said first and second antennas.