Abstract:
La présente invention concerne un objet de communication (1A, 1B, 1C, D) comportant des moyens de communication radiofréquence avec un dispositif distant (T), lesdits moyens de communication étant aptes à établir une première communication de courte portée (CP) et une seconde communication (LP) de plus longue portée que la première,ladite longue portée étant permise par une technologie du type Bluetooth ou Wifi; L'objet se distingue en ce que les moyens de communication utilisent le même type (4, 5, 24) de technologie de communication pour les première et seconde communications (CP, LP). L'invention concerne également le procède pour la mise en œuvre de la communication radiofréquence à double-portée de l'objet.
Abstract:
The invention relates to a smartcard receiving device, comprising a contact interface (11) for communicating with the received smartcard (2); a remote communication interface (13) for communicating with a first remote device (3); a protocol bridge (12) designed to establish a transaction with the received smartcard (2) through the contact interface (11). The smartcard receiving device further comprises a communicating device detector (14, 15) adapted to detect a second remote device (5) communicating according to a remote communication protocol different from the communication protocol used by said remote communication interface (13). The protocol bridge (12) interrupts the transaction with the received smartcard (2) when the second remote device (5) communicating according to said different remote communication protocol is detected.
Abstract:
The invention is aimed at optimising the life of the power supply of mobile equipment with a radiofrequency communication interface by switching off the power to it when it reaches a given state. A mobile device (102) has a battery (206), a radiofrequency circuit (201) allowing the mobile device (102) to exchange information with a host device (101). The mobile device (102) comprises an electronic switch (202) connected between the battery (206) and at least the radiofrequency circuit (201), where the switch makes it possible to supply power or not to the radiofrequency circuit. A power control circuit (203) is capable of controlling the electronic switch (202) so that it ceases to power the radiofrequency circuit as soon a break in communication is detected.
Abstract:
The embodiments of this invention relate to a smart card (2) intended to be installed in a mobile telephone and comprising: - a first radiofrequency antenna (3a) configured to exchange radiofrequency signals, - an integrated circuit chip (7) configured to cooperate with a radiofrequency antenna (3a) and establish wireless communication, - means for connection (11) between the said first radiofrequency antenna (3a) and the said integrated circuit chip, characterised in that the said smart card (2) also comprises: - at least a second radiofrequency antenna (3b) configured to exchange radiofrequency signals, the first (3a) and the said at least second radiofrequency antenna (3b) being positioned at distinct locations of the smart card (2), - means for connection (11) between the said first radiofrequency antenna and the said integrated circuit chip, - the integrated circuit chip (7) being also configured to select at least one out of the first (3a) and the at least second radiofrequency antenna (3b) of the smart card (2) to establish wireless communication via the at least one selected radiofrequency antenna.
Abstract:
The present invention relates to a method for transmitting digital data from an emitting device E1 to a receiving device R1. Said method comprises an emission step made by the emitting device and a reception step made by the receiving device. The emission comprises encoding digital data by modulation of a luminous signal, said modulation being made on at least one color parameter independent of brightness, and generating the luminous signal. The reception comprises capturing the luminous signal (22), determining at least one color parameter from the captured luminous signal (22), and decoding the digital data by means of said at least one color parameter.
Abstract:
The present invention relates to a synchronization method (MTH) for synchronizing a peripheral function (PF) of a portable device (D), said peripheral function (PF) using first data (DAT1), said portable device (D) comprising a component (MC) adapted to perform said peripheral function (PF) and a secure element (SE) adapted to perform a main function (MF). Said synchronization method (MTH) comprises a synchronization of said first data (DAT1) with reference data (DAT2) via a communication link (LNK1) established for said main function (MF) between said portable device (D) and a remote server (SERV1), said synchronization comprising: − the transmission by said secure element (SE) of a first message (Msg1) to said remote server (SERV1) via said communication link (LNK1); − the reception by said secure element (SE) of a second message (Msg2) from said remote server (SERV1) via said communication link (LNK1); − the checking by said secure element (SE) if said first data (DAT1) are shifted with respect to said reference data (DAT2) according to said second message (Msg2).
Abstract:
The invention relates to a pairing device for establishing a secure wireless communication path between a first device comprising a first body-coupling communication interface and a second device comprising a screen, said pairing device comprising: - a screen communication interface, said screen communication interface comprising a light sensor, said light sensor and the screen of the second device allowing the definition of a light-based communication path for the transmission of a first pairing information from the second device to the pairing device; - a calculator for generating a second pairing information once the first pairing information has been received by the pairing device; - a second body-coupling communication interface, said second body-coupling communication interface and the first body-coupling communication interface allowing the definition of a body-coupling communication path for the transmission of the second pairing information from the pairing device to the first device, said second pairing information allowing the establishment of a secure wireless communication path between the first device and the second device.
Abstract:
The present invention relates to a communication system SYS between a first electronic device E1 and a second electronic device E2. The first electronic device E1 comprises a color-sensor CCs and which is adapted to capture a color Co2 having a second value V2pm; to compute an inter-color distance d between two captured colors Co2 and Co2'; to send an acknowledgement if said inter-color distance d is greater than a predetermined value Vd; and to send a request signal (Rq) to said second electronic device E2 to display a new color Co1. The second electronic device E2 comprises a color emitter CCe and a screen Sc and is adapted to display a color Co1 according to a first value V1pm of at least one color parameter Pm; to increase the first value V1pm and to display a new color Co1.
Abstract:
The method for transmitting a data stream from a first device (40) able to emulate touch and touch release on a touchscreen (31) of a second device (30). The touchscreen state is switching between two different states by a generation of a modification of the capacitive state of at least a first area of the touchscreen, the method comprises: •generating a sequence of touches (TS) and touch releases (R) defining a sequence of state transitions, a first value of bit being encoded by a first duration (ta) defined between two state transitions and a second value of bit being encoded by a second duration (tb) defined between two state transitions; •generating a sequence of events in the second device (30),; •retrieving a bit stream by analyzing each measured duration by the second device between two successive events of the sequence of events.
Abstract:
The invention relates to a SPI bus having a feedback from the slave (250) device. A master device (200) is connected to slave device through CLK, MISO, MOSI and NSS, NSS being the selection wire. Data transmission is made like a convention SPI bus. The NSS ports of the slave and the master are bi-directional tri-state ports linked together by a wire connected to at least one pull-up resistor. The master and slave selection ports are capable to receive and to send synchronization information. The slave device (250) can drive the slave selection port NSS to low level while the master selection port is in high impedance for signaling to the master a status of the slave. The invention focus the method, the slave device, the master device and the system including the slave device and the master device.