DE102007043342A1 - Method for data communication between mass memory card and near field communication unit of mobile terminal, involves connecting mass memory card with read device by read device interface of mass memory card - Google Patents

Abstract

The method involves connecting a mass memory card (20) with a read device by read device interface (30) of the mass memory card. The data communication connection is established between the mass memory card and near field communication (NFC) unit over the read device by connecting the connections (10) of the read device interface. The mass memory card detects a communication protocol on the basis of wiring of connections of the read device interface. An independent claim is included for a mass memory card with protocol detection device.

Description

The The present invention relates to a method for direct data communication a mass storage card with a NFC device of a mobile Terminal, for example a mobile station, as well as a corresponding portable data carrier.

current Mobile terminals, handhelds and the like are many with a NFC device ("Near Field Communication") for contactless exchange equipped by data in the vicinity. About one Data exchange can be done various transactions be, for example, payment transactions in public Local traffic and the like. Also a simple store and Installing new applications can be done using NFC become.

There the NFC communication protocol (specifications NFCIP-1 and NFCIP-2 according to the standards ECMA-340 and ECMA-352) per se no safety functionalities It is desirable to have data and applications in conjunction with NFC communication on a secure storage medium save. Such data may include, for example, credit an electronic wallet or electronic tickets to be for an event. As a secure storage medium is suitable for. B. a mass storage card with security functionalities, z. As an SD card ("Secure Digital Memory Card") or the like.

One owns mobile terminal with an NFC device in the Usually different interfaces to portable data carriers. A mobile station can, for. B. except one (U) SIM mobile card pick up a mass storage card. It is desirable that in the mobile station each have a direct data communication connection between one of these portable media and the NFC device can be made to effective direct data communication between the NFC device and the respective media to enable. For this purpose, the reading device for the respective data carrier in the terminal be directly connected to the NFC device. This way you can For example, a secure mass storage card, z. A SD card, used as a security element for so-called "Secure-NFC" become. A detour of transmitted data via a Processor of the mobile station is then not necessary.

A direct data communication between an NFC device of a mobile device and a mass storage card is available all desirable for performance reasons, however only very limited possible according to the prior art. In general, most NFC devices support the respective communication protocol not according to which the mass storage card with a corresponding reading device the terminal communicates, for example the SD protocol in the case of an SD card. On the other hand, the hardware design is the Most mobile devices are designed so that only either a SIM mobile card or a mass storage card directly connectable to the NFC device.

A special mass storage card from SanDisc and an associated reading device are known, which allow direct data communication between the mass storage card and the NFC device. In addition, the mass storage card includes two more ports than the conventional mass storage card, extending the reader interface beyond the standard. The data communication between the card and the NFC device in this case by means of a proprietary communication protocol, originally developed by Philips S ² C communication protocol, which is supported by the mass storage card and the appropriately equipped NFC device.

For direct data communication between a SIM mobile card and an NFC device of a mobile terminal proposes the EP 1 612 985 A1 a communication protocol that allows bidirectional communication in duplex mode on a line through a connection of the SIM mobile card, the single-wire communication protocol (SWP). In this way, data communication between the SIM mobile card and the NFC device can be performed via a single unused port of the SIM mobile card interface.

The US 6,901,457 B1 discloses a mass storage card that can distinguish, based on a data signal received from a reading device of a terminal, two communication protocols according to which a processor of the terminal can communicate with the mass storage card via the reading device. It is utilized that one of the two communication protocols does not occupy one of the connections of the mass memory card, and thus an initialization signal of the other communication protocol received or received on this connection can be unambiguously interpreted.

A direct data communication between a mass storage card and the NFC device of a mobile terminal so far only possible if the reader of the mobile terminal and the hardware design of the terminal spe are aligned with a read device interface of the data carrier and a mutually supported communication protocol, or the reader interface has sufficient ports that can each be exclusively occupied by different communication protocols.

It is therefore the object of the present invention, a direct Data communication between a mass storage card and an NFC device to enable a mobile terminal in a simple manner.

These Task is through a method and a mass storage card with the features of the independent claims. Advantageous embodiments and further developments are in the dependent Claims specified.

The The present invention is based on the idea of a mass storage card equipped with a protocol detection device, which uses the connection of terminals of a reader interface the mass memory card recognizes in accordance with which Communication protocol, a data communication with an NFC device a mobile device that uses the mass storage card is connected, is carried out.

Therefore includes a method for data communication between a mass storage card and an NFC device of a mobile terminal over a reader connected to the NFC device of the terminal the steps of connecting the mass storage card to the reader by means of a reading device interface of the mass memory card, establishing a data communication connection between the mass storage card and the NFC device through the reader Wiring connections of the reader interface according to one supported by the NFC facility Communication protocol and performing a direct Data communication between the mass storage card and the NFC device via the established data communication connection according to the Communication protocol. Recognizes according to the invention the mass storage card that supported the NFC setup Communication protocol based on the connection of connections the reader interface.

A Accordingly, a corresponding mass storage card comprises a reader interface, the with a reading device of a mobile terminal for connecting the mass memory card is connectable to the terminal, and a controller that is configured via one by wiring connections of the reader interface according to one of an NFC device with a supported the mass storage card connected terminal Communication protocol established data communication connection to perform a direct data communication with the NFC device. According to the invention, the mass storage card comprises a protocol recognizer set up by the the NFC device supported communication protocol based on the wiring of terminals of the reader interface to recognize.

The Mass storage card supports in this way all common Communication protocols used in conjunction with an NFC device are known. An adaptation of a terminal to a special Mass storage card is no longer necessary as long as the NFC device of the terminal with a mass storage card compatible Reading device of the terminal is connected. The mass storage card can be used in different devices, even if the respective NFC facilities of different terminals each different communication protocols for data communication with a mass storage card. The mass storage card adapts to the respective communication conditions found in the terminal and is therefore extremely flexible. In this way, a direct data communication between the Mass storage card and a NFC device of a mobile terminal ensured in a simple manner.

Preferably, the mass storage card protocol recognizer recognizes the communication protocol by means of current measurement and / or voltage measurement and / or resistance measurement or a suitable combination of such measurements at one or more of the terminals of the reader interface. For this purpose, the protocol detection device comprises a voltage detection device, a current measuring device and / or a resistance measuring device. The logging is done as far as possible at the hardware level. It is generally not necessary to interpret received data signals semantically, for example on the basis of a bit pattern, since the different communication protocols define different electrical connections of terminals of the reader interface. If two communication protocols make identical connections, the protocol recognition can still be carried out semantically on the basis of an initialization signal that can then be interpreted. Furthermore, it is not necessary for various communication protocols to be detected to send initializing data signals to terminals exclusively occupied by these communication protocols. In this way, all currently used in conjunction with an NFC device Kommu be recognized. Furthermore, the present method can be easily extended to other communication protocols.

Thus, the mass storage card recognizes, for example, the S ² C communication protocol, the single-wire communication protocol, the USB communication protocol, and the SD communication protocol from the wiring of terminals of the mass storage card reader interface.

The Mass storage card can have information about a recognized Save communication protocol persistently. Is after a first Insert the mass storage card into a reader of a mobile terminal recognized the communication protocol, which supports the NFC device of the terminal, so the mass storage card can later communicate with the NFC device, without always first performing a log detection have to. In particular, such communication, z. B. via the single-wire communication protocol, even then possible if the terminal is switched off and the mass storage card through the NFC device with energy is supplied. Will the mass storage card from the terminal removed and used in another terminal, it is done Again, a first log detection to the card to the possibly different from the NFC device of the previous terminal NFC setup of the current terminal. The Information replacing the current communication protocol the information stored until then.

When preferred embodiment of the mass storage card is uses a microSD card whose reading device interface in addition to the eight standardized microSD ports (according to the "SDA Physical Layer Specification") two further connections includes, which when connecting the microSD card with the reading device via the reader is connected to the NFC device. about the other two ports can therefore be a data communication between the NFC device and the mass storage card after one be carried out any communication protocol, as long as the communication protocol for this task is not defined more than two connections. All common aforementioned communication protocols in connection with NFC meet this requirement. Furthermore, the mass storage card Detect if the two other connections directly with the Antenna of the corresponding NFC device are connected. In this Case, the mass storage card analogous to a contactless communicating Act on disk.

Preferably recognizes a microSD card according to the invention the Communication protocol supported by the NFC device is based on the wiring of the two other connections. It can be provided that the wiring of such standardized microSD connectors used for power, as a ground connection and for data transmission according to the SD communication protocol are provided, in addition to protocol detection becomes. Communicates in accordance with the SD communication protocol the microSD card usually via the reading device with a processor of the terminal.

The microSD card can through the NFC device of the terminal over the two other connections are powered. This will provide a direct data communication between the microSD card and the NFC device is possible even if the terminal, over which the microSD card usually uses its power to operate refers, switched off or the corresponding energy source, eg. B. a battery or a battery of the terminal are empty. The NFC device draws the energy from an electromagnetic Field in which she is located. In principle, it is also possible that the microSD card while passing through the terminal Energy is provided, in turn, the NFC facility over one of the two other connections powered, For example, if the NFC device is not sufficient in one strong electromagnetic field is located.

One The system according to the invention therefore comprises a mobile Terminal, such as a mobile station, with an NFC device and one connected to the NFC device Reading device for receiving a mass storage card and a A mass storage card according to any one of claims 10 to 18, suitable for carrying out a method according to one of Claims 1 to 9.

The The present invention will now be described with reference to the accompanying drawings Drawings described by way of example. Show:

1 a preferred embodiment of a mass storage card according to the invention; and

2 a system comprising a mobile terminal having an NFC device and a read device directly connected to the NFC device for receiving the mass storage card 1 ,

Regarding 1 includes a designed as a microSD card mass storage card 20 a reader interface 30 to connect the mass storage card 20 with a reading device 120 a mobile terminal 100 which is in 2 in the form of a mobile terminal is is. The reading device 120 is in the mobile station 100 with an NFC device 150 connected, allowing a direct data communication between the mass storage card 20 and the NFC facility 150 via the reading device 120 as described below. The NFC device includes a controller 152 , a modem 154 and an antenna 156 , The control device 152 supports a communication protocol, according to which data communication from units of the mobile station 100 with the NFC device, for example, between the microSD card 20 and the NFC facility 150 via the reading device 120 , Furthermore, the mobile radio terminal comprises 100 a recording device 160 for a (U) SIM mobile card 170 , Both the recording device 160 as well as the processor 140 are with the NFC facility 150 connected. Also via these connections is a data communication of the respective units with the NFC device 150 possible.

The reader interface 30 the microSD card 20 includes connections 1 - 10 , The connections 1 to 8th correspond to the standardized microSD connections of a microSD card 20 , connection 4 (VDD) is used to power the microSD card 20 and connection 6 (GND) as ground connection. The microSD card 20 As a rule, it does not have its own energy supply. The power to operate the microSD card 20 is z. B. from a battery (not shown) of the terminal 100 provided. It is also possible to use the microSD card as described below 20 about the NFC facility 150 to provide energy. About another one of the connections 1 to 8th takes place according to a communication protocol, e.g. B. the SD communication protocol, according to which the microSD card 20 with the processor 140 of the terminal communicates a transfer of commands and corresponding replies between the microSD card 20 and the processor 140 where the microSD card 20 usually responds as a "slave" and the processor acts as a "master". Still others of the connections 1 to 8th finally serve to transmit a clock signal to the microSD card 20 and a data transfer between the microSD card 20 and the processor 140 via the reading device 120 ,

The two other connections 9 and 10 Used to connect the microSD card to the NFC device 150 of the terminal 100 , As in 2 are shown in the to the reader interface 30 complementary interface 130 the reading device 120 the connections 109 and 110 that set up, with the other connections 9 and 10 the reader interface 30 the microSD card 20 interact with the NFC facility 150 over the connecting lines 209 and 210 connected. As described below, direct data communication between the NFC device 150 and the microSD card 20 be carried out according to different communication protocols, depending on which communication protocol of the control device 152 the NFC facility 150 is supported. To detect these different communication protocols includes the microSD card 20 a protocol recognition device 40 ,

The protocol recognition device 40 is with a control device 50 connected, then a data communication with the NFC device 150 according to the protocol recognition device 40 Controlled communication protocol controls. Furthermore, the protocol recognition device 40 with a controller 60 a mass storage 70 , z. As a flash memory connected. The controller 60 is set up according to the protocol recognizer 40 recognized communication protocol to be configured persistently, allowing a configuration of the controller 60 not before any data communication between the microSD card 20 and the NFC facility 150 must take place. A configuration of the controller 60 in the case of ordinary data communication of the microSD card 20 with the processor 140 according to the SD communication protocol over the standardized connections 1 - 8th it remains undamaged. Also the microSD card 20 can store information about the recognized communication protocol that is at least as long as the microSD card is correct 20 not from the mobile station 20 is removed and introduced into another mobile terminal whose NFC device may support a different communication protocol used by the protocol recognition device 40 must be recognized when first establishing a data communication connection.

The protocol recognition device 40 recognizes the communication protocol, according to which a direct data communication with the NFC device 150 is performed, based on the wiring of the two other connections 9 and 10 the reader interface 20 the microSD card 20 , possibly in connection with the wiring of the connections 4 (VDD) and 6 (GND). The wiring is from the reading device 120 according to the specifications of the NFC facility 150 and the communication protocol used by the controller 152 supported, implemented. The protocol recognition by the protocol recognition device 40 takes place predominantly at the hardware level. This includes the protocol recognition device 40 a voltage detection device 42 , a current measuring device 44 and a resistance measuring device 46 , by means of which to the can be measured before the aforementioned terminals due to the wiring detectable voltages, currents and resistances.

The protocol recognition device 40 is set up to recognize a number of communication protocols. By way of example, this is described below for the USB communication protocol, the S ² C communication protocol and the single-wire communication protocol (SWP) as well as for the case where the two further connections 9 and 10 directly with the antenna 156 the NFC facility 150 are connected. In addition, the protocol recognition device 40 be set up to detect further communication protocols. For example, are the other connections 9 and 10 as additional data transfer ports of an SD interface, as through the ports 1 to 8th is provided, the protocol recognition device 40 be set up to recognize this as well.

• 1. Sind die weiteren Anschlüsse 9 und 10 direkt mit der Antenne 156 der NFC-Einrichtung verbunden, so liefert eine Widerstandsmessung der Anschlüsse 9 und 10 gegen VDD Hochohmigkeit. Befindet dich die NFC-Einrichtung in einem elektromagnetischen Wechselfeld, so kann eine sinusförmige Wechselspannung detektiert werden, beispielsweise mit einer Frequenz von 13,56 MHz. Die Anschlüsse 9 und 10 sind ohne Bezugspunkt zu VDD und GND. In diesem Fall kann die Steuereinrichtung 50 der microSD-Karte 20 wie eine kontaktlose Chipkarte mit einer Antenne 156 agieren. Die Datenkommunikation mit der entsprechenden ANT-Applikation der Steuereinrichtung 50 erfolgt über die beiden Verbindungsleitungen "ANT1", "ANT2", die jeweils den Enden der Antenne 156 entsprechen und über die Protokollerkennungseinrichtung 40 und die Anschlüsse 9 und 10 der Leseeinrichtungsschnittstelle 30 mit der Antenne 156 verbunden sind.
• 2. Unterstützt die Steuereinrichtung 152 der NFC-Einrichtung 150 des Endgeräts 100 das USB-Kommunikationsprotokoll, so detektiert die Protokollerkennungseinrichtung 40 bei beiden Anschlüssen 9 und 10 einen Pulldown von 15 kΩ gegen GND, welcher im USB-Master implementiert ist. Die Protokollerkennungseinrichtung empfängt ein differentielles Signal. Die Anschlüsse 9 und 10 entsprechen hierbei der positiven Datenleitung D+ und der negativen Datenleitung D– gemäß dem USB-Kommunikationsprotokoll und die entsprechende USB-Applikation der Steuereinrichtung 50 der microSD-Karte 20 kommuniziert über die Verbindungsleitungen "D+" und "D–" und über die Anschlüsse 9 und 10 gemäß dem USB-Kommunikationsprotokoll mit der NFC-Einrichtung 150.
• 3. Unterstützt die Steuereinrichtung 152 der NFC-Einrichtung 150 das S²C-Kommunikationsprotokoll, so detektiert die Protokollerkennungseinrichtung 40 eine getaktete Gleichspannung, z. B. mit einer Frequenz von 13,56 MHz. Anschluss 10 weist einen externen Pulldown gegen GND auf. Die Anschlüsse 9 und 10 entsprechen dabei SIG IN und SIG OUT gemäß dem S²C-Kommunikationsprotokoll und die entsprechende S²C-Applikation der Steuereinrichtung 50 kommuniziert über die Verbindungsleitungen "SIG IN" und "SIG OUT" und über die Anschlüsse 9 und 10 der Leseeinrichtungsschnittstelle 30 mit der NFC-Einrichtung 150 gemäß dem S²C-Kommunikationsprotokoll.
• 4. In dem Fall, in dem die Steuereinrichtung 152 der NFC-Einrichtung 150 das Single-Wire-Kommunikationsprotokoll (SWP) unterstützt, welches zur Datenkommunikation nur eine Leitung benötigt, kann die Protokoller kennungseinrichtung 40 am Anschluss 9 eine Spannung gegen GND erkennen (z. B. 1,6 V), Anschluss 10 befindet sich ebenfalls auf VDD. In diesem Fall ist es möglich, dass die microSD-Karte 20 über den Anschluss 9 durch die NFC-Einrichtung 150 mit Energie versorgt wird, welche diese aus einem elektromagnetischen Wechselfeld bezieht. Dies ermöglicht eine direkte Datenkommunikation zwischen der microSD-Karte 20 und der NFC-Einrichtung 150 auch dann, wenn das Endgerät 100 ausgeschaltet (BA, "Batterie aus") ist oder die entsprechende Batterie/Akku leer sind. Über die Leitung V_BA wird dann zumindest die Steuereinrichtung 50 mit Energie versorgt. Wird auch der Controller 60 auf diese Weise mit Energie versorgt, so kann dieser die spezielle Situation erkennen und seinen Stromverbrauch minimal halten. Die Datenkommunikation zwischen der NFC-Einrichtung 150 und der microSD-Karte 20 erfolgt über den Anschluss 10 und mittels der SWP-Applikation der Steuereinrichtung 50 über die Verbindungsleitung "SWIO". Prinzipiell kann die NFC-Einrichtung 150 jedoch auch, bei eingeschaltetem Endgerät 100, die Energie über die microSD-Karte und über den Anschluss 9 erhalten. In diesem Fall kann die microSD-Karte als "Master" gegenüber der NFC-Einrichtung 150 agieren, die dann als "Slawe" antwortet.
• 5. Sind die Anschlüsse 9 und 10 nicht von der NFC-Einrichtung 150 beschaltet, sondern derart, dass sie als zusätzliche Datenanschlüsse zu einer standardisierten SD-Schnittstelle dienen sollen, so kann die Protokollerkennungseinrichtung 40 dies anhand der entsprechenden Pullups an den Anschlüssen 9 und 10 (im Bereich von 10–100 kΩ) erkennen.

After inserting the microSD card 20 in the reading device 120 of the mobile radio terminal, a protocol detection procedure can take place, for example, as shown below. If a communication protocol is detected in one of the following steps, the following tests can be omitted and a direct data communication between the microSD card 20 and the NFC facility 150 to be started.

• 1. Are the other connections 9 and 10 directly with the antenna 156 connected to the NFC device, so provides a resistance measurement of the connections 9 and 10 against VDD high resistance. If the NFC device is located in an electromagnetic alternating field, then a sinusoidal alternating voltage can be detected, for example with a frequency of 13.56 MHz. The connections 9 and 10 are without reference to VDD and GND. In this case, the control device 50 the microSD card 20 like a contactless chip card with an antenna 156 act. The data communication with the corresponding ANT application of the control device 50 is done via the two connection lines "ANT1", "ANT2", each of the ends of the antenna 156 correspond and via the protocol recognition device 40 and the connections 9 and 10 the reader interface 30 with the antenna 156 are connected.
• 2. Supports the controller 152 the NFC facility 150 of the terminal 100 the USB communication protocol, so detects the protocol detection device 40 at both connections 9 and 10 a pulldown of 15 kΩ against GND, which is implemented in the USB master. The protocol recognizer receives a differential signal. The connections 9 and 10 in this case correspond to the positive data line D + and the negative data line D- according to the USB communication protocol and the corresponding USB application of the control device 50 the microSD card 20 communicates via the connection lines "D +" and "D-" and via the connections 9 and 10 according to the USB communication protocol with the NFC device 150 ,
• 3. Supports the controller 152 the NFC facility 150 the S ² C communication protocol, so detects the protocol detection device 40 a clocked DC voltage, z. B. with a frequency of 13.56 MHz. connection 10 has an external pulldown against GND. The connections 9 and 10 correspond to SIG IN and SIG OUT according to the S ² C communication protocol and the corresponding S ² C application of the control device 50 communicates via the connection lines "SIG IN" and "SIG OUT" and via the connections 9 and 10 the reader interface 30 with the NFC facility 150 according to the S ² C communication protocol.
• 4. In the case where the control device 152 the NFC facility 150 supports the single-wire communication protocol (SWP), which requires only one line for data communication, the protocol recognition device 40 at the connection 9 detect a voltage against GND (eg 1.6 V), connection 10 is also on VDD. In this case, it is possible that the microSD card 20 over the connection 9 through the NFC facility 150 is supplied with energy, which relates these from an electromagnetic alternating field. This allows for direct data communication between the microSD card 20 and the NFC facility 150 even if the terminal 100 is switched off (BA, "battery off") or the corresponding battery / rechargeable battery is empty. Via the line V _BA then at least the control device 50 energized. Will also be the controller 60 supplied with energy in this way, it can recognize the special situation and minimize its power consumption. The data communication between the NFC device 150 and the microSD card 20 via the connection 10 and by means of the SWP application of the control device 50 via the connection line "SWIO". In principle, the NFC device 150 but also, with the terminal turned on 100 , the power through the microSD card and over the connection 9 receive. In this case, the microSD card can be considered "master" over the NFC device 150 act, which then answers as "Slav".
• 5. Are the connections 9 and 10 not from the NFC facility 150 wired, but such that they as additional data connections to a standardized SD interface, so the protocol detection device 40 this by means of the corresponding pull-ups on the connections 9 and 10 (in the range of 10-100 kΩ).

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1612985 A1 [0007]
• - US 6901457 B1 [0008]

Claims (19)

Method for data communication between a mass storage card ( 20 ) and an NFC device ( 150 ) of a mobile terminal ( 100 ) via one with the NFC device ( 150 ) of the terminal ( 100 ) connected reading device ( 120 ) of the terminal ( 100 ), comprising the steps of: - connecting the mass storage card ( 20 ) with the reading device ( 120 ) by means of a reader interface ( 30 ) of the mass memory card ( 20 ); Establishing a data communication connection between the mass storage card ( 20 ) and the NFC facility ( 150 ) via the reading device ( 120 ) by connecting connections ( 1 - 10 ) of the reader interface ( 30 ) according to one of the NFC facilities ( 150 ) supported communication protocol; Performing a direct data communication between the mass storage card ( 20 ) and the NFC facility ( 150 ) via the established data communication connection according to the communication protocol; characterized in that the mass memory card ( 20 ) the communication protocol based on the wiring of connections ( 1 - 10 ) of the reader interface ( 30 ) recognizes. Method according to claim 1, characterized in that the mass memory card ( 20 ) the communication protocol by means of current measurement and / or voltage measurement and / or resistance measurement at at least one of the connections ( 1 - 10 ) recognizes. Method according to claim 1 or 2, characterized in that the mass memory card ( 20 ) Persistently stores information about the detected communication protocol. Method according to one of claims 1 to 3, characterized in that as mass storage card ( 20 ) a microSD card ( 20 ) whose read device interface ( 30 ) in addition to standardizing microSD connectors ( 1 - 8th ) two further connections ( 9 . 10 ) when connecting the mass storage card ( 20 ) with the reading device ( 120 ) via the reading device ( 120 ) with the NFC device ( 150 ) get connected. Method according to claim 4, characterized in that the mass memory card ( 20 ) the communication protocol based on the wiring of the two further connections ( 9 . 10 ) recognizes. Method according to claim 5, characterized in that the mass memory card ( 20 ) the communication protocol additionally based on the wiring of those of the standardized microSD connectors ( 1 - 8th ), which are provided for power supply, as ground connections and / or for data transmission. Method according to one of claims 4 to 6, characterized in that the mass storage card ( 20 ) via one of the two further connections ( 9 . 10 ) by the NFC facility ( 150 ) of the terminal ( 100 ) is energized. Method according to one of claims 4 to 7, characterized in that the mass memory card ( 20 ) detects if an antenna ( 156 ) of the NFC facility ( 150 ) directly with the two further connections ( 9 . 10 ) connected is. Method according to one of claims 1 to 8, characterized in that the mass memory card ( 20 ) based on the wiring of terminals ( 1 - 10 ) of the reader interface ( 30 ) recognizes the S ² C communication protocol, the single-wire communication protocol, the USB communication protocol and / or the SD communication protocol. Mass storage card ( 20 ), comprising a reader interface ( 30 ), which is set up with a reading device ( 120 ) of a mobile terminal ( 100 ) for connecting the mass memory card ( 20 ) with the mobile terminal ( 100 ) and a control device ( 50 ), which is set up via a connection of connections ( 1 - 10 ) of the reader interface ( 30 ) according to one of an NFC facility ( 150 ) one with the mass storage card ( 20 ) connected mobile terminal ( 100 ) communication protocol connection support a direct data communication according to the communication protocol with the NFC device ( 150 ), characterized by a protocol recognition device ( 40 ), which is set up, the communication protocol on the basis of the connection of terminals ( 1 - 10 ) of the reader interface ( 30 ) to recognize. Mass storage card ( 20 ) according to claim 10, characterized in that the protocol recognition device ( 40 ) a voltage detection device ( 42 ) arranged to measure voltage on at least one of the terminals ( 1 - 10 ), and / or a current measuring device ( 44 ) arranged to measure current on at least one of the terminals ( 1 - 10 ), and / or a resistance measuring device ( 46 ) arranged to measure resistance on at least one of the terminals ( 1 - 10 ) and the protocol recognition device ( 40 ), the communication protocol based on the voltage measure and / or the current measurement and / or the resistance measurement. Mass storage card ( 20 ) according to claim 10 or 11, characterized in that the protocol recognition device ( 40 ) is arranged to store information about the recognized communication protocol in a memory. Mass storage card ( 20 ) according to one of claims 10 to 12, characterized in that the mass memory card ( 20 ) a microSD card ( 20 ) whose reader interface ( 30 ) in addition to standard microSD connectors ( 1 - 8th ) two further connections ( 9 . 10 ), which are set up, when connecting the mass storage card ( 20 ) with a reading device ( 120 ) of a mobile terminal ( 100 ) with an NFC device ( 150 ) of the terminal ( 100 ) to be connected. Mass storage card ( 20 ) according to claim 13, characterized in that the protocol recognition device ( 40 ), the communication protocol is based on the wiring of the two further connections ( 9 . 10 ) to recognize. Mass storage card ( 20 ) according to claim 14, characterized in that the protocol recognition device ( 40 ), the communication protocol is additionally based on the wiring of those of the standardized microSD connections ( 1 - 8th ), which are provided for power supply, as ground connections and / or for data transmission. Mass storage card ( 20 ) according to one of claims 13 to 15, characterized in that the mass memory card ( 20 ) via one of the two further connections ( 9 . 10 ) by an NFC device ( 150 ) of a mobile terminal ( 100 ) to be energized. Mass storage card ( 20 ) according to one of claims 13 to 16, characterized in that the protocol recognition device ( 40 ) is configured to detect if an antenna ( 156 ) of an NFC device ( 150 ) of a mobile terminal ( 100 ) directly with the two further connections ( 9 . 10 ) connected is. Mass storage card ( 20 ) according to one of claims 10 to 17, characterized in that the protocol recognition device ( 40 ), based on the wiring of terminals ( 1 - 10 ) of the reader interface ( 30 ) recognize the S ² C communication protocol, the single-wire communication protocol, the USB communication protocol and / or the SD communication protocol. System comprising a mobile terminal ( 100 ) with an NFC device ( 150 ) and one with the NFC device ( 150 ) connected reading device ( 120 ) for receiving a mass storage card ( 20 ) as well as a mass memory card ( 20 ) according to one of claims 10 to 18, suitable for carrying out a method according to one of claims 1 to 9.