Gemalto Sa

Thales Dis France Sa

Gregory Capomaggio

Jean-Paul Caruana

Alain Guinet

The invention relates to a method of communicating data with an electronic device, comprising the step of receiving signals conveyed by an electrical lead. The method is distinguished in that it comprises the following steps: fitting an RF radiofrequency interface with electrical terminals in the device, extracting signals from the electrical lead, and injecting signals resulting from the extracted signals, in the form of frames of radiofrequency signals in the RF interface with electrical terminals. The invention also relates to a radiofrequency communication device, a system comprising the device and a machine using the device.

Method and system for communicating data with an inaccessible electronic device

A communication device comprises an RF interface () and a CPU (). The RF interface () has a physical channel PhCh to exchange radio messages on a wireless network. The physical channel PhCh is coupled with at least two logical channels LC. The CPU () is connected to the RF interface () to provide at least two services Son the wireless network. Each service Sis associated with a logical channel LCof the RF interface (). The CPU () associates a transmission parameter Pwith each service Sand sends the said transmission parameter Pto the logical channel LCassociated with the service S. The RF interface () configures the physical channel PhCh on the basis of the transmission parameter Pdepending on the logical channel LCunder transmission.

Wireless communication device and method for transmission of services with different security levels

A portable electronic devicecomprising a batterycoupled with an electronic circuit-through a switching circuitfor switching on or off the supply voltage Vcc to the electronic circuit using the battery. The portable device comprises at least one electromagnetic field detection circuitcoupled with the switching circuitto start the power supply to the electronic circuit-if an electromagnetic field is detected.

Portable object with self switching device

To recharge the battery of a portable object communicating with a reader establishing communication over a modulated electromagneticfield, a recharging process is proposed. The portable object sends at least one waiting message to the reader. The said waiting message tells the reader a waiting time WTXM before the next message. The portable object uses energy from the electromagnetic field to recharge its battery during the waiting period.

Contactless battery charging device and process

A method of demodulating signals of an electromagnetic field induced by a contactless transponder includes a step in which the signals from the transponder are detected at given times or frequency. The times or frequency of the detection are synchronized in phase with the electromagnetic field. An associated demodulator and reader are also disclosed.

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Rocquevaire, France

Gregory Capomaggio