摘要:
The invention relates to a portable electronic device comprising a digital display (20) having an electrically conducting plane (21) for neutralizing the interfering electromagnetic radiation of the display, a device (CT1, CL) for transmitting data by intracorporeal current and comprising a first electrode (2) and a second electrode. According to the invention, the first electrode is formed by the conducting plane (21) of the display which is electrically connected to the data transmission device, and the second electrode is formed by the conducting plane of a printed circuit.
摘要:
The invention relates to a method for the production of an object incorporating a contactless microcircuit, said method comprising steps consisting in: forming an antenna coil (AT4) in the form of a spiral from a first face of a substrate (TG4); on the substrate, forming first and second conductive pads (E16, E17) connected to inner and outer ends respectively of the spiral of the antenna coil; connecting the connection terminals of the microcircuit to third and fourth conductive pads (EM1, EM1'); and securing the microcircuit to the substrate, with the first and third conductive pads being positioned to face one another and the second and fourth conductive pads facing one another, the first to fourth conductive pads forming two capacitors mounted in series with the antenna coil, the antenna coil and the first and second conductive pads being formed by insertion of a conductive wire into the substrate.
摘要:
The invention relates to a method of contactless communication between a dual contact (C6) and contactless (CLI) interface NFC card (NFSE), installed in a communication terminal (HD2), and an external NFC device (ED), the terminal comprising an NFC module (NFCC) coupled to the contact interface of the card and comprising a contactless communication interface (AC1), the method comprising the steps of: selection of one or the other of the contact and contactless interfaces of the card, transmission of signals between the card and the NFC device via the selected interface, and, if the contact interface of the card is selected, via the contactless interface (AC1) of the NFC module, and detection, by the card (NFSE), of the presence of the NFC module (NFCC) connected to the contact interface (C6) of said card, the selection of one or the other of the contact and contactless (CLI) interfaces of the card being carried out by the card on the basis of the result of the detection of the presence of the NFC module.
摘要:
The invention relates to a method for executing an application in an NFC device comprising steps during which: a contactless link is established between a first NFC device (HD1) and a second NFC device (POI), the first NFC device transmits, via the contactless link, an identifier stored by the first NFC device, the second NFC device transmits an application identifier via the contactless link, the second NFC device transmits the identifier of the first NFC device and the identifier of the application to an application server (ASRV), the application server transmits the identifier of the first NFC device and the identifier of the application to an authentication server (HSRV), the authentication server checks the identification data, and if the first NFC device and the application are identified, the authentication server authorises the two NFC devices to execute the application by transmitting, to the application server, an identifier of a user of the first NFC device corresponding to the identifier of the first NFC device.
摘要:
The invention relates to a prime number generation method implemented in an electronic device (DV). The method includes steps of generating a prime number from another prime number via the formula Pr = 2P × R + 1, wherein P is a prime number having a bit number less than that of the potential prime number and R is an integer, and using the Pocklington primality test on the candidate prime number. The candidate prime number is proven to be prime when passing the Pocklington test. According to the invention, the size in number of bits of the candidate prime number is equal to three times the size of the prime number (P) to a nearest whole unit, the generated candidate prime number being kept as a candidate prime number only if the quotient (U) from the integer division of the integer (R) by the prime number is odd.
摘要:
The invention relates to a method for conducting a transaction between a portable device (HD2) and a transaction terminal (TT), comprising the steps of establishing a communication channel between the portable device (HD2) and the transaction terminal (TT); establishing a first data link (CX3) between the transaction terminal (TT) and the transaction server (SV1); and using an application program (CAPj) in the transaction server (SV1) to conduct the transaction with the transaction terminal by way of the data link (CX3), on behalf of the portable device.
摘要:
The invention relates to an apparatus (DV) including inductive-coupling communication means (D2, ACT) configured for communicating in a peer-to-peer mode with an identical apparatus, and including an antenna coil which is asymmetrical relative to a longitudinal medial line, wherein said asymmetry corresponds to a coverage ratio of less than or equal to 0.6 if the antenna coil comprises four or more turns, of no more than 0.7 if the antenna coil comprises three turns, or of no more than 0.8 if the antenna coil comprises one or two turns.
摘要:
L'invention est relative à un circuit d'antenne pour communications en champ proche comprenant un bobinage actif (L1) plan, connecté entre une première (A1) et une seconde (A2) borne d' accès ; un bobinage auxiliaire (L2) coplanaire au bobinage actif et connecté par une première extrémité à la première borne d'accès (A1); et un condensateur d'accord (C) connecté à la seconde extrémité du bobinage auxiliaire (L2). Les spires des bobinages actif et auxiliaire sont entrelacées.