EP4052391A1 - Chargement électrique d'une carte électronique - Google Patents
Chargement électrique d'une carte électroniqueInfo
- Publication number
- EP4052391A1 EP4052391A1 EP20796641.7A EP20796641A EP4052391A1 EP 4052391 A1 EP4052391 A1 EP 4052391A1 EP 20796641 A EP20796641 A EP 20796641A EP 4052391 A1 EP4052391 A1 EP 4052391A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- card
- message
- field
- nfc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/005—Transmission systems in which the medium consists of the human body
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/32—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wireless devices
- G06Q20/327—Short range or proximity payments by means of M-devices
- G06Q20/3278—RFID or NFC payments by means of M-devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/32—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wireless devices
- G06Q20/322—Aspects of commerce using mobile devices [M-devices]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
- H04W4/185—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals by embedding added-value information into content, e.g. geo-tagging
Definitions
- TITLE Electrical charging of an electronic card
- the invention relates generally to telecommunications, and more specifically to contactless communications using short-range radio technologies, in particular of the NFC type (from the English Near Field Communication). It applies more particularly to terminals equipped with physical and software resources including a microprocessor and a Near Field (NF) communication module generating an electromagnetic field.
- NFC Near Field Communication
- NFC Near-field communications
- ISO International Standard Organization
- Communications of this type have many applications in the fields of payment or transport, for example.
- an IBC card or tag cannot be powered from this way because it is located at a distance from this equipment, from which it is removed by the body of the wearer.
- Such an IBC terminal is therefore generally associated with a mobile terminal so as to benefit from its power supply.
- the invention improves the state of the art.
- the IBC card it suffices to position the IBC card near the reader in order to charge or reload it.
- a message is received on the reader to indicate that the card needs charging, it maintains the generation of the electromagnetic field capable of supplying the card with electrical current and / or voltage. To do this, it suffices to maintain near-field communication, even if no application message is exchanged between the terminal and the card.
- electrical charge is meant the charge generated by the electromagnetic field which powers the card by induction when it is in the near field range of the terminal.
- provision of an electric charge is meant the generation of the electromagnetic field by the terminal, when it is in reader mode (active).
- electronic card an electronic card capable of communicating in the near field with a terminal for carrying out electronic transactions (payment, transport, etc.) and having its own power supply (battery, battery, etc.)
- charging or “recharging” an electronic card, we mean charging the power supply (battery, battery, etc.) of the card.
- terminal is understood to mean any equipment capable of positioning itself in reader mode to supply power to a near-field device, for example a smartphone, a tablet, a gantry, a TPE (electronic payment terminal), etc.
- the method as described above further comprises the steps of:
- the terminal obtains the period of time during which it must or can make the load available, for example 3 minutes.
- Such information may for example be predefined and read in a memory of the terminal, or calculated by the terminal as a function of internal parameters, or received from the card in the message, or in another message, etc.
- the method as described above is further characterized in that it comprises an implementation step. implementation, by the terminal, of an adaptation of the power of the load made available.
- the terminal can choose to adapt the power delivered for the load: it can for example stop supplying the load before the end of the scheduled duration, or even reduce the instantaneous power, etc.
- a method of making available as described above further includes the steps of:
- This embodiment of the invention allows the card to notify the terminal that its reloading is finished, or can be interrupted. The terminal can then deactivate communication with the card, exit reader mode, etc.
- the invention also proposes a method for electrically charging an electronic card comprising a near-field communication module and a rechargeable battery by a terminal positioned in near-field reader mode, the method being characterized in that it comprises on the map, when the map is in the field electromagnetic generated by the terminal, the steps of:
- the IBC card positioned in the field of the terminal, sends it a simple message inviting it to remain in reader mode in order to power it.
- a mode of operation does not exist today.
- a classic NFC card, or tag can be powered by the electromagnetic field of the equipment with which it communicates, but only on condition that effective communication (an exchange of application data) is established between the card and the terminal. .
- An IBC card or tag cannot be supplied in this way, because during a communication it is generally too far away from the terminal to be in its electromagnetic field (for example, it is in the user's pocket / carrier).
- a charging method as described above further includes the steps of:
- the card can indicate to the terminal for how long it must charge it.
- This value (for example 5 minutes) may correspond to a predefined datum entered in the card, or to the result of a calculation made by the card depending, for example, on the residual charge of its battery, etc.
- the methods as described above are further characterized in that said message is transmitted on a communication channel other than the near-field channel.
- the card and the terminal both have a communication module other than the NFC module, they can use a communication channel of this type to exchange data, and in particular the message MSG1.
- This second channel may for example be of the Bluetooth, or Wi-Fi, etc. type.
- This type of channel notably provides the advantage of a higher bit rate than the near-field channel.
- the methods as described above are further characterized in that said message is sent by the card in the near field after a reinitialization or in response to an initialization request. from the menu.
- the message is sent after initialization or reinitialization of the card, so that the terminal immediately knows that it must simply remain in reader mode to supply the card with power, without initiating an application communication.
- the methods as described above are further characterized in that said message is sent, during an ISO 14443-3 type communication between the card and the device. terminal, in a field left free by the standard for future use.
- an existing standard is reused and which is respected by all the electronic chip cards on the market.
- messages imposed by the standard are exchanged between the card and the terminal on the near-field channel.
- the load request message can advantageously be exchanged via this means, without disturbing the initialization of the card according to this protocol.
- the methods as described above are further characterized in that said message is sent during an ISO 14443-4 type communication between the card and the terminal .
- an existing standard is reused and which is respected by most of the electronic chip cards on the market.
- an ISO 14443-4 type communication following initialization of the card and of the communication by the corresponding ISO 14443-3 protocol (lower protocol level), messages can be exchanged freely between the card and the terminal (depending on the application).
- the load request message can advantageously be exchanged via this means.
- the methods as described above are further characterized in that the card complies with type A of the ISO 14443-3 standard and in that the message is transported in the unique identifier (UID) transmitted by the card.
- the methods as described above are further characterized in that the card conforms to type B of the ISO 14443-3 standard and in that the message is transported in the application identifier (AFI) or in the application data (ADC) transmitted by the card.
- AFI application identifier
- ADC application data
- the invention also relates to a terminal comprising a near-field communication device, a memory and a processor configured for, when the terminal is positioned in reader mode, so as to generate an electromagnetic field capable of charging an electronic card comprising a control module.
- near field communication :
- the invention also relates to an electronic card comprising a near-field communication device, a rechargeable power supply, an adaptation circuit, a memory and a processor configured for:
- the invention also relates to a system comprising a terminal and an electronic card as described above, in which the message is exchanged on the near-field channel.
- the invention also relates to a system comprising a terminal and an electronic card as described above, in which the terminal and the electronic card furthermore comprise another communication module making it possible to establish a communication channel different from the near-field channel. and the message is exchanged on this communication channel different from the near field channel.
- the invention also relates to a computer program comprising instructions for implementing one of the above methods according to any one of the particular embodiments described above, when said program is executed by a processor.
- the method can be implemented in various ways, in particular in wired form or in software form.
- This program can use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in any other. desirable shape.
- the invention also relates to a recording medium or information medium readable by a computer, and comprising instructions of a computer program as mentioned above.
- the aforementioned recording media can be any entity or device capable of storing the program.
- the medium may comprise a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or else a magnetic recording means, for example a hard disk.
- the recording media can correspond to a transmissible medium such as an electrical or optical signal, which can be conveyed via an electrical or optical cable, by radio or by other means.
- the programs according to the invention can in particular be downloaded from an Internet type network.
- the recording media can correspond to an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in the execution of the method in question.
- This terminal, this card and this computer program have characteristics and advantages similar to those described above in relation to the method of providing an electric charge.
- Figure 1 illustrates the context of the invention
- FIG. 2 illustrates an example of an environment for implementing the invention according to a particular embodiment
- Figure 3 illustrates an architecture of the terminals involved in a loading system according to one embodiment of the invention
- Figure 4 illustrates steps of the charging method according to one embodiment of the invention
- FIG. 5a illustrates steps of the charging method according to one embodiment of the invention, in the context of the ISO 14443 standard.
- FIG. 5b illustrates steps of the loading method according to one embodiment of the invention, in the context of the ISO 14443 standard.
- the general principle of the invention consists in being able to charge, or reload, an IBC card / tag allowing wireless communication using the human body as a channel, when it comes into proximity to an NFC terminal, in order to make it sufficiently autonomous to be used regularly by its wearer without the need for a specific charger.
- FIG. 1 illustrates the background of the invention.
- the user (2) carrying the card C1 equipped with an IBC module approaches almost touching the reader terminal Tl to implement a service, for example a monetary transaction.
- the user (2), or bearer, of the IBC card is, for example, a human being but could alternatively take the form of another living being able to make a voluntary gesture towards the reader and to transmit radio carrier waves.
- the terminals C 1 and T 1 are able to communicate in the near field via an electromagnetic field (NF, 3) using the user's body.
- the terminal (Tl) can be for example a TPE (for Electronic Payment Terminal) comprising for example a user interface, also called HMI, intended to display messages to the attention of the user and possibly to receive data, or also a mobile terminal having an NFC module, a connected object (in English, IOT), a personal computer, a computer mouse, a home gateway, etc. It is able to emit NFC-type radio signals, through the user's body, via an NFC / IBC antenna (not shown).
- the terminal (Tl) comprises a surface formed by the possibly protected antenna and adapted to react when the user touches it or comes into proximity with it, for example by bringing his hand closer.
- the term "surface” is in no way limiting and given for illustrative purposes, the antenna being the only means essential for the operation of the device.
- the IBC card is a portable device naturally capable of receiving radio carrier waves, via an antenna, directly or through the user's body (2).
- the card (C1) is located in the immediate vicinity of the user (2), without necessarily being in contact. direct with this one.
- the C1 card is placed inside a pocket or a bag carried against the user, or around his neck.
- it is estimated that the card (C1) is not more than a few centimeters from the body of the user (2).
- the distance is for example less than 5 cm.
- the card C1 can be compared to a conventional electronic chip card comprising a passive “NFC tag”, but it is equipped with a small rechargeable battery, for autonomous operation.
- the battery will in particular be recharged during an implementation of the invention.
- the C1 card shown here is an IBC card but can also, in the context of the invention, take the form of an NFC card, or any device including an NFC card.
- the bearer carries out his transactions by physically approaching the NFC card of the terminal, but the charging principle remains the same.
- FIG. 2 illustrates an exemplary implementation of the invention according to a particular embodiment.
- the holder (re) loads his card using an NFC / IBC terminal, here a mobile terminal T2.
- NFC communications can cover two types of applications linked to two different operating modes on an NFC terminal:
- the first mode implements an emulation of a near-field communication module to secure electronic transactions between an application stored on the terminal and an external reading terminal;
- the second mode relates to the reading of data on devices of the transponder type, or NFC cards; this is the reader mode (in English, tag reading) as defined by the NFC Forum (an industry association responsible for promoting the implementation and standardization of NFC technology).
- NFC communication is established between a master, here the terminal, and a slave, for example a transponder. In this case, the terminal feeds the tag positioned in the electromagnetic field that it generates, by electromagnetic induction.
- the terminal T2 has activated its NFC module and has positioned itself in tag reading mode. From that moment on, he is listening to a transponder. It is therefore able to enter into communication with the NFC / IBC card behaving like a transponder, and to supply it. When the cardholder approaches the mobile, he plunges it in the terminal's electromagnetic field. In response, the terminal can receive signals from the card.
- a dialogue is established between the card and the terminal, in accordance with the ISO / IEC 14443 standard.
- the ISO 14443 standard describes the operation of contactless smart cards of the NFC type.
- This standard describes several layers (from 1 to 4).
- the main stages of initialization of the NFC communication between a transmitter and the card according to parts 3 and 4 (ISO 14443-3 and ISO 14443-4 of the standard) will be detailed later in support of Figures 5a and 5b.
- the transmitter, or mobile terminal according to the example is able to read and / or write in the contactless card.
- the invention proposes to replace these read / write operations by an operation to feed the card.
- the card transmits a specific message to the terminal to let it know that it should do nothing, but simply remain in reader mode in order to power it.
- This specific message may also include optional fields intended to indicate to the terminal the time interval during which it must make the load available, the way in which it must supply the card, etc.
- this optional data can be transmitted to the terminal in other messages that follow the first specific message.
- This message can be inserted into a 14443-3 or 4 type protocol, according to exemplary embodiments which will be described in more detail in support of Figures 5a and 5b.
- FIG. 3 illustrates an architecture of the terminals C1 (NFC / IBC card) and T2 (mobile terminal intended to supply power) according to a particular embodiment of the invention.
- the terminal T2 has the conventional architecture of a mobile telephone, of the smartphone type, and comprises in particular a memory MEM, a processing unit UT, equipped for example with a processor PROC, and controlled by the stored computer program PGM. in MEM memory. On initialization, the code instructions of the computer program PGM are for example loaded into a memory before being executed by the processor PROC.
- the processor PROC of the processing unit UT notably implements the steps of the method for making an electric charge available according to any one of the particular embodiments described in relation to FIGS. 4, 5a and 5b, according to any one of the particular embodiments described in relation to FIGS. 4, 5a and 5b, according to PGM computer program instructions.
- the terminal also includes control electronics for near-field communications, or NFC module.
- the PGM program is for example a specific application, or applet, responsible for managing communication with the IBC card. It can be found in the memory of the mobile terminal, or in that of a security element (not shown) associated with it. It can for example be an applet of the “Android” type intended to be executed on mobile devices equipped with this operating system. It can run in the background, or be launched manually by the user, or even be launched automatically when an IBC / NFC type card is detected near the terminal.
- the terminal also comprises a communication module distinct from the NFC module, for example Bluetooth (or Wi-Fi, Li-Fi, etc.) denoted BT in the figure.
- a communication module distinct from the NFC module, for example Bluetooth (or Wi-Fi, Li-Fi, etc.) denoted BT in the figure.
- the smart card Ci has the classic architecture of a smart card equipped with a module, or NFC tag and includes in particular
- the processor PROC 'of the processing unit UT notably implements the steps of the loading method according to any one of the particular embodiments described in relation to FIGS. 4, 5a and 5b, according to the instructions of the program d PGC computer.
- the PGC program is notably responsible for managing communication with the terminal and adapting control for charging the power supply.
- a ALIM power supply which can take the form of a small battery, for example a conventional rechargeable 3 V lithium battery.
- a REDR rectifier circuit capable of adapting the proposed power supply to the battery so as to comply with the manufacturer's specifications.
- a circuit is within the reach of those skilled in the art.
- the NFC antenna that receives the electromagnetic wave from the reader can be connected to a voltage rectifier. Once the voltage has been rectified and filtered, it can be applied to a regulator, for example a 2F33CV type circuit from the company STMicroelectronics, to stabilize a voltage at the terminals of the battery.
- the card also includes a communication module distinct from the NFC module, for example Bluetooth (or Wi-Fi, Li-Fi, etc.) denoted BT 'in the figure, to communicate with the BT module of the terminal.
- a communication module distinct from the NFC module, for example Bluetooth (or Wi-Fi, Li-Fi, etc.) denoted BT 'in the figure, to communicate with the BT module of the terminal.
- FIG. 4 illustrates steps of the charging method according to one embodiment of the invention.
- the card is approached to the mobile. For example, it can be placed on it. It enters the electromagnetic field generated by the terminal.
- the application in charge of the IBC card (for example the PGM applet) is launched. It can be activated by the user, or run in the background on the mobile. If it was not already in reader mode, as introduced above, the mobile switches to this mode during an Eli step. It will be noted that, by construction, if the terminal is a mobile telephone and observes a variation in load at the level of its NFC antenna, it automatically goes into reader mode. In addition, readers which are not of the mobile type are always positioned in this mode. Switching to reader mode can therefore be considered automatic. In card reader mode, the terminal generates an NFC-type magnetic field. From this moment, we enter the standard exchange initialization protocol described in ISO standards 14443-3 and 14443-4 as described in more detail in support of Figures 5a and 5b.
- step E2 the response of the card to the request from the mobile is transmitted from the card to the issuer.
- This response takes the form of an MSG1 message.
- the purpose of this message is to indicate to the terminal that it should not do anything other than remain active in NFC reader mode. It may further include a number of parameters such as, for example, the desired power supply duration (T, for example 5 minutes), the power required for the power supply, and any other parameter that could be useful for managing the load.
- this message may indicate that the card does not need to be (re) loaded.
- the card can be placed in "invisible” mode, which means that it will not be detected by the reader. Any method within the reach of a person skilled in the art for canceling the mutual inductance which is established in normal times between the antennas of the terminal and of the card can be implemented.
- the message MSG1 is transmitted from the card to the reader via the NFC communication established between the two devices.
- the message can be transmitted in Bluotooth, Wi -Fi, or any wireless protocol, provided that the card is equipped with the corresponding module.
- the terminal receives this message in step E12 and can respond positively or negatively accordingly. In the case of a positive response, he can go to step E13 power supply. In the event of a negative response, it can send an MSG2 message back to the card, on a near-field channel or on a different channel using its BT module, optionally accompanied by a code indicating the reasons for its refusal. , for example :
- the mobile remains positioned in reader mode for a time which may, according to variants, have been predefined on the terminal, received as a parameter of a message from the card, specified by a standard (by example the standard 14443 mentioned above), or calculated according to parameters previously received (for example, to carry out a charge to 80% of the card, knowing its battery characteristics, the terminal T2 can calculate that it must put the load available for 3 minutes), etc.
- a standard by example the standard 14443 mentioned above
- the terminal T2 can calculate that it must put the load available for 3 minutes
- the terminal can adapt, possibly over time, the power of the load made available, for example by reducing the charging time if its own power supply falls below a load threshold.
- the rectifier module of the card transmits to the power supply of the card a rectified induced voltage and current, intended for its power supply to charge or recharge it.
- an (optional) message is transmitted from the card to the issuer.
- the purpose of this message is to indicate to the transmitter that it can stop supplying the card for example because it has encountered an electrical problem (it is heating up, there is a problem with one of its components, etc.)
- This message can be transmitted on a near-field channel or on a different channel using its BT 'module.
- step El 5 the mobile stops feeding the card. If necessary, it deactivates it before stopping the power supply. According to one variant, an end of charge indication can be restored on the terminal (via its HMI).
- step E5 the card ceases to be supplied with power, it can be withdrawn from the vicinity of the terminal.
- Figure 5a illustrates the steps of the card initialization and selection process by a terminal according to the ISO 14443 standard (parts 3 and 4) for a type A card.
- This standard describes several communication layers. For more details, refer to the ISO standards themselves, references:
- steps S1 / S2 the sender sends an identification request (called “REQA”) and waits for a response (called “ATQA”).
- REQA an identification request
- ATQA waits for a response
- a specific anti-collision procedure makes it possible to link the transmitter to a single receiver, if several receivers are present in the field, and to receive the unique card identifier (UID).
- UID unique card identifier
- step S5 / S6 the receiver identification procedure is continued; at the end of this step, the transmitter is in possession of an identifier (SAK: "Select Acknowledge") of the type of card, in particular to detect whether the receiver supports the ISO / IEC 14443-4 communication layer.
- SAK Select Acknowledge
- the application protocol associated with the receiver is used to communicate with it; the support of this protocol is tested during a step S7.
- the protocol used later can be proprietary (denoted PPRIV in the figure) or of the ISO / IEC 14443-4 type (denoted PROT 14443-4) defined by the standard if the card supports it)
- One embodiment according to the invention consists in entering, in one of the data sent by the card to the terminal, an indication that a charge is requested. This corresponds to the message MSG1 of FIG. 4. According to one embodiment preferred, this indication will be inserted in an RFU (Reserved for future ISO / IEC use) field of the standard.
- RFU Reserved for future ISO / IEC use
- the advantage of using an RFU field is not to modify the behavior of a card conforming to the 144443-3 protocol, but simply to appropriate a field left free. Below, we suggest some possible variants, the list of which is by no means exhaustive:
- the recharge request is transmitted in a field of the UID identifier.
- the terminal having detected a load request in the UID can: remain on standby during step S7, that is to say do nothing for T seconds (step S ’7); at the end of step S7, enter into communication with the card via a private level 4 protocol and exchange additional information relating to the load via this private protocol; at the end of step S7, enter into communication with the card via protocol 14443-4 and exchange additional information relating to the load on this standard protocol: charging time required / granted, charging power required / granted, etc.
- the (re) charge request is transmitted by the card to the terminal at protocol level 4.
- SW 1 SW2 in the standard used in all answers.
- FIG. 5b illustrates the steps of the card initialization and selection process by a terminal according to the ISO 14443 standard (parts 3 and 4) for a type B card. Only the steps S'I and S'2 which are described here are described here. replace steps S1 and S2 described previously. The subsequent steps (anti-collision and selection) are implemented in a different way but result, in the same way as in the previous case of the type A card, in a selection of the card which opens on a communication using a private protocol or a 14443-4 type protocol. The same variants therefore apply as in the case of FIG. 5a.
- the sender sends an identification request (called “REQB” or “WUPB”) comprising an AFI field and awaits an ATQB response comprising in return an AFI field, coded on a byte.
- the application family identifier AFI represents the type of application targeted by the proximity coupler (here, the terminal) and makes it possible to preselect the proximity cards before the ATQB. Only proximity cards with applications of the type indicated by the AFI are authorized to respond to an RFQB / WUPB command with an AFI other than "00".
- the card If the card complies with the required AFI, it can respond with an “ATQB” type response itself including an “AFI” field in an “application data” field.
- a judicious combination of the fields left free in the AFI (noted as previously RFU) makes it possible to indicate, according to one embodiment of the invention, a load request, for example we can position in the response:
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1912247A FR3104352A1 (fr) | 2019-10-31 | 2019-10-31 | Chargement électrique d’une carte électronique |
PCT/FR2020/051768 WO2021084175A1 (fr) | 2019-10-31 | 2020-10-08 | Chargement électrique d'une carte électronique |
Publications (1)
Publication Number | Publication Date |
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EP4052391A1 true EP4052391A1 (fr) | 2022-09-07 |
Family
ID=69700019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20796641.7A Pending EP4052391A1 (fr) | 2019-10-31 | 2020-10-08 | Chargement électrique d'une carte électronique |
Country Status (4)
Country | Link |
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US (1) | US20230011533A1 (fr) |
EP (1) | EP4052391A1 (fr) |
FR (1) | FR3104352A1 (fr) |
WO (1) | WO2021084175A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20230308467A1 (en) * | 2022-03-24 | 2023-09-28 | At&T Intellectual Property I, L.P. | Home Gateway Monitoring for Vulnerable Home Internet of Things Devices |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1782331B1 (fr) * | 2004-08-16 | 2018-01-31 | Giesecke+Devrient Mobile Security GmbH | Dispositif d'entree d'utilisateur a evaluation d'entrees d'utilisateur et procede. |
EP2071497A1 (fr) * | 2007-12-10 | 2009-06-17 | Gemalto SA | Procédé et dispositif chargeur de batterie sans contact |
CN109408127B (zh) * | 2018-11-09 | 2022-05-24 | 四川科道芯国智能技术股份有限公司 | 芯片系统加载方法及芯片卡 |
-
2019
- 2019-10-31 FR FR1912247A patent/FR3104352A1/fr not_active Withdrawn
-
2020
- 2020-10-08 EP EP20796641.7A patent/EP4052391A1/fr active Pending
- 2020-10-08 WO PCT/FR2020/051768 patent/WO2021084175A1/fr unknown
- 2020-10-08 US US17/773,092 patent/US20230011533A1/en active Pending
Also Published As
Publication number | Publication date |
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WO2021084175A1 (fr) | 2021-05-06 |
US20230011533A1 (en) | 2023-01-12 |
FR3104352A1 (fr) | 2021-06-11 |
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