CN204481913U - The system of CPU card is read based on mobile audio interface - Google Patents
The system of CPU card is read based on mobile audio interface Download PDFInfo
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- CN204481913U CN204481913U CN201520092636.3U CN201520092636U CN204481913U CN 204481913 U CN204481913 U CN 204481913U CN 201520092636 U CN201520092636 U CN 201520092636U CN 204481913 U CN204481913 U CN 204481913U
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Abstract
The utility model discloses a kind of system reading CPU card based on mobile audio interface, comprise smart mobile phone and read-write equipment, described smart mobile phone comprises modular converter and audio interface, this modular converter is used for converting digital signal to audio analog signals, and encodes to the audio analog signals that audio interface receives, described read-write equipment is connected with smart mobile phone by audio interface, read-write equipment comprises supply module, audio communication circuitry, MCU, CPU card controller and the antenna with impedance matching circuit, the audio analog signals that this audio communication circuitry is used for audio interface inputs converts square-wave signal to, and convert the baseband signal that MCU exports to analog signal, described MCU is used for being decoded as digital signal to square-wave signal, and convert the radiofrequency signal that CPU card controller exports to baseband signal, described CPU card controller is for reading the radiofrequency signal of carry information in CPU card.
Description
Technical field
The utility model relates to electronics and reads field, particularly relates to a kind of system reading CPU card based on mobile audio interface.
Background technology
Along with the development of science and technology, radio-frequency card reader has been widely used in the every field such as gate inhibition, consumption, public transport, meanwhile, the universal and communication network of mobile phone, to the development of two-forty, high bandwidth, makes mobile phone be subject to the favor of more and more user as card-reading terminal.
Existing IC-card sheet exists that memory space is little, applicable sector is not easy the problems such as planning, the multi-field business of limiting mobile terminal Card Reader integrated; Further, in the application of radio frequency Card Reader, the safety of data is also very important.For the requirement of the fail safe of mobile terminal Card Reader radio frequency card, memory space, space planning, CPU card is in the particular design of input/output interface, security logic, the process of encrypting and decrypting association, greatly strengthen the safety and reliability of data, be applied to every field more and more widely.
Therefore, mobile phone is of great significance as the terminal tool reading CPU card.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of system reading CPU card based on mobile audio interface, thus using mobile phone as card-reading terminal, reads the information of CPU card.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
Read a system for CPU card based on mobile audio interface, comprise smart mobile phone and external read-write equipment; Described smart mobile phone comprises modular converter and audio interface, and described modular converter is used for digital signal being converted to the audio analog signals exported by audio interface; Described read-write equipment comprises supply module, audio communication circuitry, MCU, CPU card controller and antenna, described audio communication circuitry is used for converting the audio analog signals of input to square-wave signal, described MCU is used for square-wave signal to be decoded as digital signal, and described CPU card controller is for reading CPU card information; Described read-write equipment is connected with smart mobile phone by audio interface.
Further, described MCU connects CPU card controller by communication interface.
Further, described antenna is with impedance matching circuit.
The beneficial effects of the utility model are: mobile phone, as reading terminals, reads CPU card information safely by read-write equipment, and are sent in mobile phone by the CPU card information read by audio interface, take into account convenience and reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Label declaration:
1, smart mobile phone; 10, modular converter; 2, read-write equipment; 20, supply module; 21, audio communication circuitry; 22, MCU; 23, CPU card controller; 24, antenna; 3, CPU card.
Embodiment
By describing technology contents of the present utility model in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
The design of the utility model most critical is: provide a kind of system reading CPU card based on mobile audio interface, comprise smart mobile phone and read-write equipment, audio communication circuitry in read-write equipment converts audio analog signals to square-wave signal, square-wave signal is decoded as digital signal by MCU, and CPU card controller is for reading CPU card information.
Refer to Fig. 1, the utility model provides a kind of system reading CPU card based on audio interface, comprises smart mobile phone 1 and external read-write equipment 2; Described smart mobile phone 1 comprises modular converter 10 and audio interface; Described modular converter 10 is for converting the audio analog signals exported by audio interface to by digital signal, the audio analog signals also for receiving audio interface is encoded; Described read-write equipment 2 comprises supply module 20, audio communication circuitry 21, MCU22, CPU card controller 23 and antenna 24; Described audio communication circuitry 21 converts square-wave signal to for audio analog signals audio interface inputted, baseband signal also for being exported by MCU22 converts analog signal to, described MCU22 is used for the square-wave signal that audio communication circuitry 21 exports to be decoded as digital signal, radiofrequency signal also for being exported by CPU card controller converts baseband signal to, and described CPU card controller 23 is for reading the radiofrequency signal of carry information in CPU card 3; Described read-write equipment 2 is connected with smart mobile phone 1 by audio interface.
The beneficial effects of the utility model are: mobile phone is as reading terminals, mobile phone is as reading terminals, read CPU card information safely by read-write equipment, and the CPU card information read is sent in mobile phone by audio interface, take into account convenience and reliability.
Further, described MCU22 connects CPU card controller 23 by communication interface.
Seen from the above description, MCU22 is communicated by communication interface with cpu controller 23.
Further, described antenna 24 is with impedance matching circuit.
Seen from the above description, the antenna 24 that CPU card controller 23 is modulated by impedance matching is good sends and received RF signal.
Consult Fig. 1, embodiment one of the present utility model is, a kind of system reading CPU card based on audio interface, comprises smart mobile phone 1 and external read-write equipment 2; Described smart mobile phone 1 comprises modular converter 10 and audio interface, and described modular converter 10 is for converting the audio analog signals exported by audio interface to by digital signal, the audio analog signals also for receiving audio interface is encoded; Described read-write equipment 2 comprises supply module 20, audio communication circuitry 21, MCU22, CPU card controller 23 and antenna 24, and described MCU22 connects CPU card controller 23 by communication interface, and described antenna 24 is with impedance matching circuit; Described audio communication circuitry 21 converts square-wave signal to for audio analog signals audio interface inputted, baseband signal also for being exported by MCU22 converts analog signal to, described MCU22 is used for the square-wave signal that audio communication circuitry 21 exports to be decoded as digital signal, radiofrequency signal also for being exported by CPU card controller converts baseband signal to, and described CPU card controller 23 is for reading the radiofrequency signal of carry information in CPU card 3; Described read-write equipment 2 is connected with smart mobile phone 1 by audio interface.
The specific works flow process of the utility model embodiment one is as follows:
The first step, is connected on smart mobile phone 1 by read-write equipment 2 by audio interface, and supply module 20 is electrically connected with MCU 22 and CPU card controller 23 and provides electric energy respectively; Preferably, supply module is battery;
Second step, on smart mobile phone, 1 sends digital signal, and modular converter 10 converts described digital signal to audio analog signals, and this audio analog signals is sent in external read-write equipment 2 by a left side (right side) the earphone passage of audio interface;
3rd step, the audio analog signals that smart mobile phone 1 sends is converted to square-wave signal by the audio communication circuitry 21 of read-write equipment 2, this square-wave signal is as in the baseband signal input value MCU 22 received, and MUC 22 pairs of square-wave signals are decoded, and recovers the digital signal that smart mobile phone sends;
4th step, described digital signal is through communications interface transmission to CPU card controller 23, and CPU card controller 23 sends radiofrequency signal according to this digital signal modulated by the antenna 24 that impedance matching is good;
5th step, radiofrequency signal sends through the antenna 24 that impedance matching is good, forms a closely electromagnetic field, and the radiofrequency signal that unique CPU card 3 that reception is in this elect magnetic field feeds back;
6th step, the radiofrequency signal that described CPU card 3 feeds back is through radio frequency reception loop transfer to CPU card controller 23, and this CPU card controller 23 distinguishes parsing to the radiofrequency signal transmitted, and by communications interface transmission in MCU 22;
7th step, CPU card 3 data that MCU 22 receives carry out encoding and generating baseband signal, the baseband signal generated converts audio analog signals to through audio communication circuitry 21, and this audio analog signals is sent in smart mobile phone 1 via the microphone channel in audio interface;
8th step, the audio analog signals that smart mobile phone 1 receives in audio interface transfers in modular converter 10, and modular converter 10 to this coding audio signal, thus obtains the information of the CPU card 3 that CPU card controller 23 reads.
In sum, what the utility model provided reads the system of CPU card based on mobile audio interface, can convenient, fast, safe, reliably reading CPU card information.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalents utilizing the utility model specification and accompanying drawing content to do; or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. read a system for CPU card based on mobile audio interface, it is characterized in that, this system comprises smart mobile phone and external read-write equipment;
Described smart mobile phone comprises modular converter and audio interface; Described modular converter is used for digital signal being converted to the audio analog signals exported by audio interface, and the audio analog signals also for receiving audio interface is encoded;
Described read-write equipment comprises supply module, audio communication circuitry, MCU, CPU card controller and antenna; The audio analog signals that described audio communication circuitry is used for audio interface inputs converts square-wave signal to, baseband signal also for being exported by MCU converts analog signal to, the square-wave signal that described MCU is used for audio communication circuitry exports is decoded as digital signal, radiofrequency signal also for being exported by CPU card controller converts baseband signal to, and described CPU card controller is for reading the radiofrequency signal of carry information in CPU card;
Described read-write equipment is connected with smart mobile phone by audio interface.
2. the system reading CPU card based on mobile audio interface according to claim 1, is characterized in that, described MCU connects CPU card controller by communication interface.
3. the system reading CPU card based on mobile audio interface according to claim 1, it is characterized in that, described antenna is with impedance matching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092636.3U CN204481913U (en) | 2015-02-09 | 2015-02-09 | The system of CPU card is read based on mobile audio interface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520092636.3U CN204481913U (en) | 2015-02-09 | 2015-02-09 | The system of CPU card is read based on mobile audio interface |
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| CN204481913U true CN204481913U (en) | 2015-07-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118282A (en) * | 2015-09-07 | 2015-12-02 | 无锡力芯微电子股份有限公司 | Infrared remote control equipment and system based on headphone interface |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118282A (en) * | 2015-09-07 | 2015-12-02 | 无锡力芯微电子股份有限公司 | Infrared remote control equipment and system based on headphone interface |
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