Mobile telecommunications terminal comprising RFID functions and associated method
View Patent ↗A mobile telecommunications terminal comprising RFID functions, in addition to an associated method are provided. In one aspect, the terminal comprises a telecommunications interface, a user interface and a data processing unit. A modification made with the aid of an RFID transponder circuit to be controlled via of RFID data records that are stored in an RFID memory unit in such a way that a flexible RFID transponder emulation is achieved at minimal cost.
1. A method for using at least one communications system with a mobile telecommunications terminal, the at least one communications system comprising:
a first communications system comprising:
an RFID reader unit for sending an RFID activation signal and for reading RFID parameter data of the mobile telecommunications terminal,
a communications network connectable to the mobile telecommunications terminal, and
a service provider unit connected to the communications network, the service provider unit managing the RFID reader unit;
the method comprising:
providing the mobile telecommunications terminal comprising:
a telecommunications interface for implementing wireless communication with the communications network,
a user interface,
a data processing unit for controlling the telecommunications interface, the user interface, and basic functions of the mobile telecommunications terminal,
an RFID transponder circuit directly connected to the data processing unit, and
an RFID memory unit accessible by the data processing unit;
receiving by the mobile telecommunications terminal a transmission from the service provider unit of the first communications system, the received transmission comprising an activation signal recognition algorithm for recognizing the RFID activation signal from the RFID reader unit of the first communications system, an RFID parameter data transmission algorithm for transmitting the RFID parameter data for the first communications system, and the RFID parameter data for the first communications system; and
storing the activation signal recognition algorithm, the RFID parameter data, and the RFID parameter data transmission algorithm received from the service provider unit of the first communications system in the RFID memory unit; and
wherein the data processing unit activates the RFID transponder circuit by using the activation signal recognition algorithm and the RFID parameter data transmission algorithm such that the RFID parameter data is sent to the RFID reader unit of the first communications system as a function of the RFID activation signal sent by the RFID reader unit of the first communications system.
2. The method of claim 1 wherein the RFID transponder circuit comprises a coupling coil, a bandpass filter, a rectifier, and a switching element.
3. The method of claim 2 wherein the mobile telecommunications terminal further comprises:
a first lead of the coupling coil connected to ground;
a second lead of the coupling coil connected via the rectifier and the bandpass filter to an RFID input of the data processing unit for capturing the RFID activation signal;
an RFID output of the data processing unit connected to an input of the switching element;
a first lead of the switching element connected to ground; and
a second lead of the switching element connected to the second lead of the coupling coil; and
wherein the data processing unit, after receiving the RFID activation signal at the RFID input, outputs the RFID parameter data at the RFID output.
4. The method of claim 2 wherein the bandpass filter is implemented via a capacitor, which is connected to ground via a first lead and connected to the RFID input of the data processing unit via a second lead.
5. The method of claim 2 wherein the rectifier is implemented via a diode, which is connected between the RFID input and the second lead of the coupling coil.
6. The method of claim 2 wherein the RFID transponder circuit comprises a tuning element for tuning the coupling coil.
7. The method of claim 6 wherein the tuning element is connected to an RFID tuning output of the data processing unit and is activated by an RFID tuning output of the data processing unit.
8. The method of claim 6 wherein the tuning element comprises an electrically controllable tuning capacitor.
9. The method of claim 1 wherein the activation signal recognition algorithm, the RFID parameter data, and the RFID parameter data transmission algorithm are loadable via the telecommunications interface and the communications network as a function of a user input.
10. The method of claim 9 wherein the loadable RFID algorithms and RFID parameter data represent secure algorithms and data.
11. The method of claim 9 wherein the loadable RFID algorithms and RFID parameter data are updatable and in the RFID memory unit.
12. The method of claim 9 wherein the loadable RFID algorithms and RFID parameter data are deletable and in the RFID memory unit.
13. The method as claimed in claim 1 , wherein a charging process occurs in response to the transmitting of the RFID parameter data transmission algorithm and the RFID parameter data.
14. The method as claimed in claim 13 , wherein the RFID transponder circuit identifies a user and wherein the charging process is via the telecommunications interface.
15. The method as claimed in claim 1 , wherein the transmission is secure in order to prevent unauthorized access.
16. The method as claimed in claim 1 , wherein the service provider unit of the first communications system is connected to the RFID reader unit of the first communications system and verifies the RFID parameter data via the telecommunications interface and the communications network of the first communications system.
17. The method of claim 1 wherein the RFID activation signal is received by an input of the data processing unit.
18. The method of claim 17 wherein the RFID parameter data is sent to the RFID reader unit of the first communications system utilizing a transmission schema that corresponds to a transmission schema expected by the RFID reader unit of the first communications system and wherein the activation signal recognition algorithm and the RFID parameter data transmission algorithm function as an RFID transponder emulator.
19. The method of claim 18 wherein the at least one communications system also comprises a second communications system, the second communications system comprising:
an RFID reader unit for sending an RFID activation signal and for reading second RFID parameter data of the mobile telecommunications terminal,
a communications network connectable to the mobile telecommunications terminal, and
a service provider unit connected to the communications network of the second communications system, the service provider unit of the second communications system managing the RFID reader unit of the second communications system;
the method further comprising:
receiving by the mobile telecommunications terminal a transmission from the service provider unit of the second communications system, the received transmission from the service provider unit of the second communications system comprising a second activation signal recognition algorithm for recognizing the RFID activation signal from the RFID reader unit of the second communications system, a second RFID parameter data transmission algorithm for transmitting the second RFID parameter data to the RFID reader unit of the second communications system, and the second RFID parameter data for the second communications system; and
storing the second activation signal recognition algorithm, the second RFID parameter data for the second communications system, and the second RFID parameter data transmission algorithm received from the service provider unit of the second communications system in the RFID memory unit; and
wherein the data processing unit activates the RFID transponder circuit by using the second activation signal recognition algorithm and the second RFID parameter data transmission algorithm received from the service provider unit of the second communications system such that the second RFID parameter data is sent to the RFID reader unit of the second communications system as a function of the RFID activation signal sent by the RFID reader unit of the second communications system.
20. A communications system comprising:
an RFID reader unit for sending an RFID activation signal and for reading RFID parameter data of a mobile telecommunications terminal;
a communications network connectable to the mobile telecommunications terminal;
a service provider unit connected to the communications network, the service provider unit managing the RFID reader unit; and
a mobile telecommunications terminal, the mobile telecommunications terminal comprising:
a telecommunications interface for implementing wireless communication with the communications network,
a user interface,
a data processing unit for controlling the telecommunications interface, the user interface, and functions of the mobile telecommunications terminal,
an RFID transponder circuit connected to the data processing unit, and
an RFID memory unit accessible by the data processing unit; and
the service provider unit sending a transmission to the mobile telecommunications terminal, the received transmission comprising an activation signal recognition algorithm for recognizing the RFID activation signal from the RFID reader unit, an RFID parameter data transmission algorithm for transmitting the RFID parameter data, and the RFID parameter data for the communications system; and
the mobile telecommunications terminal storing the activation signal recognition algorithm, the RFID parameter data, and the RFID parameter data transmission algorithm received from the service provider unit in the RFID memory unit; and
wherein the data processing unit activates the RFID transponder circuit by using the activation signal recognition algorithm and the RFID parameter data transmission algorithm such that the RFID parameter data is sent to the RFID reader unit as a function of the RFID activation signal sent by the RFID reader unit.