Abstract: 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.

Abstract: 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.

Abstract: A communication device comprises an RF interface (20) and a CPU (10). The RF interface (20) 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 LCi. The CPU (10) is connected to the RF interface (20) to provide at least two services Si on the wireless network. Each service Si is associated with a logical channel LCi of the RF interface (20). The CPU (10) associates a transmission parameter Pi with each service Si and sends the said transmission parameter Pi to the logical channel LCi associated with the service Si. The RF interface (20) configures the physical channel PhCh on the basis of the transmission parameter Pi depending on the logical channel LCi under transmission.

Abstract: A portable electronic device 1 comprising a battery 14 coupled with an electronic circuit 10-12 through a switching circuit 15 for 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 circuit 13 coupled with the switching circuit 15 to start the power supply to the electronic circuit 10-12 if an electromagnetic field is detected.

Abstract: 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.

Abstract: 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.

Abstract: A portable electronic device 1 comprising a battery 14 coupled with an electronic circuit 10-12 through a switching circuit 15 for 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 circuit 13 coupled with the switching circuit 15 to start the power supply to the electronic circuit 10-12 if an electromagnetic field is detected.

Abstract: To recharge the battery of a portable object communicating with a reader establishing communication over a modulated electromagnetic field, 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.

Abstract: 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 synchronised in phase with the electromagnetic field. An associated demodulator and reader are also disclosed.