A kind of mobile phone terminal
Technical field
The utility model relates to the near-field communication technical field, relates in particular to a kind of mobile phone terminal of supporting near-field communication.
Background technology
(Near Field Communication, be called for short: be a kind of on the basis of radio RF recognition technology and interconnection technique NFC), merge the technology that develops and come mutually, be a kind of short-distance wireless communication technology standard to near-field communication.The basic principle of NFC is to utilize space electromagnetic induction or electromagnetic propagation to communicate, to reach the purpose of automatic identifying object.
Near-field communication can be realized functions such as Non-contact Media Reader, contact type intelligent card and point-to-point communication, for all consumption electronic products provide a communication modes very easily.NFC becomes the mainstream technology of mobile non-contact application gradually, exchanges, reads that placard, gate inhibition's exhibition, personnel tracking management, Food Inspection are false proof in common application, business card, all holds out broad prospects in the application such as stored value card and credit card.Handheld terminal manufacturer, especially cell phone manufacturer have more and more paid close attention to its development, and its market prospects are filled with unbounded confidence.
Two kinds of technical specifications that realize the NFC function are arranged at present, a kind of is the technical specification of 13.56MHz, this technical specification connects the NFC process chip by external NFC antenna and carries out the transmission of information, provide a kind of solution of simple touch, exchange message, accessed content and service with can allowing consumer's simple, intuitive.Another kind is the 2.4GHz technical specification, this technical specification directly is integrated in radio frequency chip and SIM (client identification module) the card safety chip of 2.4GHz on the SIM card, on regular handset, need only the SIM card of inserting with integrated NFC function and just can realize the NFC function, this method implements conveniently, can promote fast on existing mobile phone terminal.
POS (point-of-sale terminal) machine that has two kinds of standard N FC in the market, but common mobile phone terminal product only satisfies a kind of NFC technical specification, and this use to the NFC mobile phone terminal has caused restriction.
The utility model content
The technical problems to be solved in the utility model provides a kind of mobile phone terminal, realizes the support to two kinds of NFC technical specifications.
For solving the problems of the technologies described above, a kind of mobile phone terminal of the present utility model, comprise: base band control chip, SIM card controller, RFID-SIM module and NFC-SIM module, wherein, the SIM card controller is connected with base band control chip, RFID-SIM module and NFC-SIM module respectively, and the base band control chip also links to each other with the NFC-SIM module.
Further, the NFC-SIM module comprises: the SIM card of Xiang Lianing, NFC chip and NFC antenna successively, and the SIM card controller is connected with the SIM card of this NFC-SIM module, and the base band control chip is connected with the NFC chip of this NFC-SIM module.
Further, the base band control chip passes through I
2C bus or RS232 serial ports are connected with the NFC chip of NFC-SIM module.
Further, the radio frequency chip of the integrated 2.4GHz of RFID-SIM module and SIM card safety chip.
Further, the RFID-SIM module is provided with power pin, reseting pin, clock input pin and input and output pin, is connected with the corresponding port of SIM card controller.
Further, the SIM card of NFC-SIM module is provided with power pin, ground pin and control pin, is connected with the corresponding port of NFC chip.
Further, be connected by the virtual memory bus between power pin, ground pin and control pin and the NFC chip.
Further, the base band control chip is connected with the SIM card controller by the serial peripheral interface bus.
Further, the SIM card controller is connected with the RFID-SIM module with the NFC-SIM module by the I/O line.
Further, the SIM card controller adopts analog switch.
In sum, the support of the integrated NFC to two kinds of technical specifications of the utility model, realization is to the compatibility of different POS machines, by contact directly accessed content and service with the NFC smart machine, for mobile phone terminal provides the approach mutual with the external world, availability, multifunctionality and the surcharge of mobile phone are promoted greatly, make safe paying, equity connect and insert passive intelligent apparatus and become a reality.
Description of drawings
Fig. 1 is the Organization Chart of the utility model execution mode mobile phone terminal;
Fig. 2 is the mount structure figure of the RFID-SIM module in the utility model execution mode;
Fig. 3 is the schematic diagram that the SIM card of the NFC-SIM module in the utility model execution mode is connected with the NFC chip.
Embodiment
The mobile phone terminal of present embodiment connects two sim modules by the SIM card controller, SPI line traffic control SIM card controller by base band control chip (CPU) carries out the switching between two sim modules, the radio frequency chip of the integrated 2.4GHz of one of them sim module and SIM card safety chip, another sim module is connected with the NFC antenna by the NFC chip, the mobile phone terminal of present embodiment can satisfy the requirement of two kinds of standards simultaneously, realize communication function for different POS machines by selecting different sim modules, make same mobile phone terminal can be suitable for different POS machines.
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Figure 1 shows that mobile phone terminal of the present utility model, comprise: base band control chip, SIM card controller, radio-frequency (RF) identification (RFID)-sim module and NFC-SIM module, wherein, the NFC-SIM module comprises: the SIM card of Xiang Lianing, NFC chip and NFC antenna successively, the radio frequency chip of the integrated 2.4GHz of RFID-SIM module and SIM card safety chip, the SIM card controller is connected with base band control chip, RFID-SIM module and the SIM card of NFC-SIM module respectively, and the base band control chip also links to each other with the NFC chip of NFC-SIM module.
The base band control chip is the core of mobile phone terminal, passes through I
2C bus or RS232 serial ports are connected with the NFC chip of NFC-SIM module, the NFC chip is controlled, be connected with the SIM card controller by SPI (serial peripheral interface) bus, send changeover control signal, the conversion of control RFID-SIM module and NFC-SIM module to the SIM card controller.
The SIM card controller is connected with the SIM card and the RFID-SIM module of NFC-SIM module by the I/O line, according to the changeover control signal gated RF ID-SIM module or the NFC-SIM module of base band control chip; The SIM card controller can adopt analog switch.
As shown in Figure 2,8 pins of RFID-SIM module definition, C1 pin: operating voltage (power pin Vcc) is provided; C2 pin: reset signal (reseting pin RST); C3 pin: input end of clock (clock input pin CLK); C4 pin: blank pipe pin (RFU, expansion is used can be self-defined according to demand); C5 pin: with reference to ground voltage (ground pin GND); C6 pin: blank pipe pin; C7 pin: I/O (I/O) data-interface (input and output pin); C8 pin blank pipe pin.Wherein, C1, C2, C3 and the corresponding port of C7 pin with the SIM card controller are connected, and by the pin status of SIM card controller control RFID-SIM module, control its work.
As shown in Figure 3, the SIM card in the NFC-SIM module can adopt the identical pin of RFID-SIM module, but there is some difference in its connected mode:
The C1 power pin is connected with the NFC chip, powers;
The GND pin of C5 also is the earth terminal that is connected to the NFC chip;
The C6 pin has carried out expanded application, and the control end of NFC chip connects C6 pin (control pin) by SWP (virtual memory) bus, and SIM card is controlled.Be connected by the SWP bus between the pin of the SIM card in the NFC-SIM module and the NFC chip.