CN206039593U - Audio frequency IC -card - Google Patents

Abstract

The utility model provides an audio frequency IC -card. Audio frequency IC -card includes security chip, contact module, non - contact module, audio frequency module and change over switch, the audio frequency module has operating condition and non - operating condition, change over switch with audio frequency module electricity is connected and is used for switching over the operating condition that the audio frequency module was located, security chip includes power port, contact port, non - contact port, audio frequency port and GPIO port, contact module with the power port with the contact port electricity is connected, non - contact module with non - contact port electricity is connected, the audio frequency module with the power port audio frequency port and GPIO port electricity is connected, change over switch set up in the audio frequency module with the power port with between the security chip and the audio frequency module with between security chip's the GPIO port. Compared with the prior art, audio frequency IC -card does not exist gating mistake or the disorderly problem of gating.

Description

Audio frequency IC-card

Technical field

The utility model is related to IC (Integrated Circuit Card, integrated circuit card) card technique field, especially relates to And a kind of audio frequency IC-card.

Background technology

Used as the important means that the same world integrates with, financial criteria is the important technical basis of national economy and social development Sex work.Foreign EMV2000 standards, People's Bank of China were promulgated in 2005《China's finance integrated circuit (IC) blocks Specification (2005)》(abbreviation PBOC2.0 specifications).PBOC2.0 specifications were done in 2010 and repaiied volume, promulgated《China's finance is integrated Circuit (IC) calliper model (2010)》, increased contactless communication regulation and small amount payment specification, the modification and perfection in application Energy of citing sb. for meritorious service is borrowed or lent money, the small amount payment business based on debt-credit note of designed, designed is increased, collects compatible, practicality and operability In one, and with preferably perspective, the application of financial IC card is pushed forward comprehensively.

Financial IC card mainly includes contact card, contactless card and contact/non-contacting double-interface card.With people couple The demand of the emerging means of payment, has engendered audio frequency IC-card on market.Audio frequency IC-card is to be embedded in audio frequency in financial IC card to lead to Letter modular circuit, while having contact module, non-contact modular and audio-frequency module, makes financial IC card not only possess traditional contact Outside communication pattern and contactless communication pattern, audio communication mode is also equipped with.

In correlation technique, audio frequency IC-card generally includes safety chip and the contact mould with safety chip electrical connection Block, non-contact modular and audio-frequency module, so that audio frequency IC has contact mode, noncontact mode and audio mode.But, by Electric energy is provided by same power input for safety chip in contact module and audio-frequency module, make audio frequency IC-card use process Middle to there is the disorderly situation of contact mode and audio mode gating mistake or gating, safety chip cannot be distinguished by gating corresponding work Operation mode, that is, but realize audio mode or but realize contact mode when needing to realize audio mode when needing to realize contact mode, Consequently, it is possible to of cause the user loss or worried, impact Consumer's Experience, and audio card designer's urgent need to resolve is important Problem.

Therefore, it is necessary to propose a kind of new audio frequency IC-card to solve the above problems.

Utility model content

The utility model technical issues that need to address are to provide a kind of low cost, simple structure, there is no contact mode The audio frequency IC-card of the disorderly problem of mistake or gating is gated with audio mode.

The utility model provides a kind of audio frequency IC-card, including safety chip, contact module, non-contact modular, audio frequency mould Block and switching switch, the audio-frequency module have working condition and off working state, the switching switch and the audio frequency mould Block is electrically connected and for switching the working condition residing for the audio-frequency module, and the safety chip includes power port, contact jaw Mouth, noncontact port, audio port and GPIO port, the contact module are electrically connected with the power port and the contact port Connect, the non-contact modular is electrically connected with the noncontact port, the audio-frequency module and the power port, the audio frequency end Mouthful and the GPIO port electrical connection, it is described switching switch be arranged between the audio-frequency module and the power port and Between the GPIO port of the audio-frequency module and the safety chip.

Preferably, the audio-frequency module includes audio frequency power subsystem and piezo, and the audio frequency power subsystem is by described Switching switch is electrically connected with the power port and the GPIO port respectively, and the piezo is electrically connected with the audio port Connect.

Preferably, the switching switch includes the first switching switch and the second switching switch, the first switching switch position Between the audio-frequency module and the power port, the second switching switch is positioned at the audio-frequency module and the safe core Between the GPIO port of piece.

Preferably, power port positive pole and the audio frequency power supply list of the first switching switch positioned at the safety chip Between the positive pole of unit, for providing electric energy, and the second switching switch positioned at the safety chip for the safety chip Between the positive pole of GPIO port and the audio frequency power subsystem, for distinguishing contact mode and audio mode, audio mode is gated.

Preferably, power cathode and the audio frequency power subsystem of the first switching switch positioned at the safety chip Between negative pole, for providing electric energy, and the second switching switch positioned at the GPIO of the safety chip for the safety chip Between the negative pole of port and the audio frequency power subsystem, for distinguishing contact mode and audio mode, audio mode is gated.

Preferably, the contact module includes 7816 interfaces and external power source, 7816 interface and the contact port Electrical connection, the external power source are electrically connected with the power port.

Preferably, the antenna power supply unit that the non-contact modular is included RF antennas and electrically connected with the RF antennas, institute State antenna power supply unit to electrically connect with the noncontact port.

Compared with correlation technique, the contact module of audio frequency IC-card of the present utility model contact port and electricity with safety chip Source port is electrically connected, and audio-frequency module is electrically connected with the audio port of safety chip, controls audio frequency power supply respectively by switching switch Unit is electrically connected with the power port and GPIO port of safety chip, realizes the level state control of the GPIO port, while It is that the safety chip and the audio-frequency module provide electric energy, by controlling the level state of GPIO port, makes the safe core Piece enters contact mode or audio mode, and when GPIO port level state is not changed in, audio frequency IC-card enters contact mode, when When change occurs in GPIO port level state, audio frequency IC-card enters audio mode, so as to avoiding audio frequency IC-card in contact mode and Audio mode gating mistake or gating are disorderly, have the advantages that simple structure, low cost and good stability.

Description of the drawings

Circuit diagrams of the Fig. 1 for one audio frequency IC-card of the utility model embodiment；

Circuit diagrams of the Fig. 2 for two audio frequency IC-card of the utility model embodiment.

Specific embodiment

Below in conjunction with drawings and embodiments, the utility model is described in further detail.

Embodiment one：

Please refer to Fig. 1, Fig. 1 is the structural representation of audio frequency IC-card of the present utility model；Fig. 2 is Fig. 1 sound intermediate frequencies IC The circuit diagram of card.The audio frequency IC-card 1 includes safety chip 11, contact module 13, non-contact modular 15, audio-frequency module 17 And switching switch 19.The audio-frequency module 17 has working condition and off working state.The switching switch 19 is located at the peace Complete between chip 11 and the audio-frequency module 17, for switching, the audio-frequency module 17 is in running order or off working state.

In the present embodiment, the safety chip 11 meets more than PBOC2.0 specifications.The audio-frequency module 17 with it is described Contact module 13, non-contact modular 15 are used in conjunction with the same safety chip 11 so that the safety of the audio-frequency module 17 Property be guaranteed, reduce fault rate and production cost, make the safe audio frequency IC-card 1, low cost, good stability and reliability Property it is high.Due to only with a safety chip 11, being simplified the integrated circuit of the audio frequency IC-card, circuit design The free degree is higher, reduces difficulty of processing.

The safety chip 11 includes power port 111, contact port 113, noncontact port 115, GPIO (General Purpose Input Output, universal input/output) port 117 and audio port 119.It is described contact module 13 respectively with The power port 111 and the contact port 113 electrically connect.The non-contact modular 15 is electric with the noncontact port 115 Connection.The audio-frequency module 17 is electric with the power port 111 and the GPIO port 117 respectively by the switching switch 19 Connection, while also electrically connect with the audio port 119.The safety chip 11 according to provide electric energy difference judged, The contact module 13, non-contact modular 15 and the audio-frequency module 17 is controlled respectively to work, and is selected into contact mode, non-is connect Touch formula and audio communication mode, make that the audio frequency IC-card is applied widely, function is strong.In the present embodiment,

The contact module 13 includes 7816 interfaces 131 and external power source 133.7816 interface 131 and the contact Port 113 electrically connects.When the contact mode using the audio frequency IC-card 1 is needed, it is capable of achieving by the contact port 113 Exchange with the information of payment terminal (not shown).Meanwhile, the recording device of the working procedure and data of the audio-frequency module 17 and Burning flow process can be write by 7816 interface 131, and without the need for transforming to existing recording device, scrap build cost is Zero, reduce the cost of the audio frequency IC-card 1.The external power source 133 is electrically connected with the power port 111, is the audio frequency IC-card carries out contact mode and provides work energy.

The non-contact modular 15 includes RF (Radio Frequency, radio frequency) antennas 151 and antenna power supply unit 153. The antenna power supply unit 153 is electrically connected with the RF antennas 151 and the noncontact port 115 respectively.When the needs sound When frequency IC-card 1 is operated in noncontact mode, 151 one side of RF antennas is communicated with payment terminal (not shown), another Aspect produces alternating voltage by electromagnetic induction effect, is the offer electric energy of the safety chip 11, powers list through the antenna Unit 153 provides electric energy by the noncontact port 115 for the safety chip 11 after carrying out rectification, filtering and voltage stabilizing, described Safety chip 11 recognizes the electric energy that the noncontact port 115 provides, and switches into noncontact mode.Generally, it is described Antenna power supply unit 153 is integrated in inside the safety chip 11.

The audio-frequency module 17 includes audio frequency power subsystem 171 and piezo 173.The audio frequency power subsystem 171 passes through The switching switch 19 is electrically connected with the power port 111, and the audio frequency power subsystem 171 is realized for the audio frequency IC-card 1 Voice communication provides electric energy.The piezo 173 is electrically connected with the audio port 119, when the audio frequency IC-card 1 enters audio frequency During pattern, the safety chip 11 controls the vibration of the piezo 173 and sends sound wave, is transmitted to the payment terminal by sound wave Information.

In the present embodiment, the switching switch 19 is included the first switching switch 191 and is switched with the described first switching 191 the second switching switches 193 for simultaneously switching off or closing.The first switching switch 191 is located at the audio-frequency module 17 and institute State between power port 111.The second switching switch 193 is located between the audio-frequency module 17 and the GPIO port 117.

In the present embodiment, it is described first switching switch 191 be located at the power port 111 positive source with it is described Between the positive pole of audio frequency power subsystem 171 and the second switching switch 193 is located at the GPIO port 117 and the audio-frequency electric Between the positive pole of source unit 171.193 level states for switching the GPIO port 117 are switched by the described second switching, that is, is located In high level or low level, while it is the safety to switch the 191 controls audio frequency power subsystem 171 by the described first switching Chip 11 provides electric energy.

Wherein, when the switching switch 19 disconnects, i.e., described first switching switchs 191 and the second switching switch 193 Simultaneously switch off, the GPIO port 117 is in low level, the power port 111 is disconnected with the audio frequency power subsystem 171, Now, if the external power source 133 is that the safety chip 11 provides electric energy, the audio frequency IC by the power port 111 Card enters contact mode；If the antenna power supply unit 153 is provided for the safety chip 11 by the noncontact port 115 Electric energy, the audio frequency IC-card enter noncontact mode；When the switching switch 19 is closed, i.e., described first switching, 191 Hes of switch The second switching switch 193 is closed at, and the power port 111 is connected with the audio frequency power subsystem 171, the GPIO Port 117 is in high level, and now no matter whether the safety chip 11 accesses external power source, the audio frequency by 7816 interfaces IC-card all will be into audio mode, so as to control the audio frequency IC-card between contact mode, noncontact mode and audio mode Switch over, it is to avoid the audio mode of the audio frequency IC-card 1 and contact mode gating mistake occur or get muddled.

Embodiment two：

Refer to Fig. 2, circuit diagrams of the Fig. 2 for two audio frequency IC-card of the utility model embodiment.Embodiment two relative to The difference of embodiment one is switching switch 29 locations difference in audio frequency IC-card 2.In the present embodiment, described first Switching switch 291 is located between the power cathode and the negative pole of the audio frequency power subsystem 271 of the power port 211 and described Second switching switch 293 is located between the GPIO port 217 and the negative pole of the audio frequency power subsystem 271.By described Two switching switches 293 switch the level state of the GPIO port 217, i.e., in high level or low level, while by described First switching switch, the 291 control audio frequency power subsystem 271 is that the safety chip 21 provides electric energy.

Wherein, when the switching switch 29 disconnects, i.e., described first switching switchs 291 and the second switching switch 293 Simultaneously switch off, the GPIO port 217 is in high level, the power port 211 is disconnected with the audio frequency power subsystem 271, Now, if the external power source 233 is that the safety chip 21 provides electric energy, the audio frequency IC by the power port 211 Card enters contact mode；If the antenna power supply unit 253 is provided for the safety chip 21 by the noncontact port 215 Electric energy, the audio frequency IC-card enter noncontact mode；When the switching switch 29 is closed, i.e., described first switching, 291 Hes of switch The second switching switch 293 is closed at, and the GPIO port 217 is in low level, the power port 211 and the sound Frequency power unit 271 is connected, described in now no matter whether external power source 233 (filling contact module numbering 233 on drawing) accesses Safety chip 21, the audio frequency IC-card all will be into audio modes, so as to control the audio frequency IC-card in contact mode, noncontact Switch between pattern and audio mode, it is to avoid mistake occur in the audio mode of the audio frequency IC-card 2 and contact mode gating Or get muddled.

Compared with correlation technique, the contact module of audio frequency IC-card of the present utility model contact port respectively with safety chip Electrically connect with power port, audio-frequency module is electrically connected with the audio port of safety chip, meanwhile, audio-frequency module is by switching switch Electrically connect with the power port and GPIO port of safety chip respectively, the switching switch switches the level shape of the GPIO port State, it is to select to enter audio mode into contact mode or selection to reach the differentiation safety chip, so as to solve audio frequency The gating problem of the contact mode and audio mode of IC-card, it is to avoid audio frequency IC-card contact mode and audio mode gating mistake or Gating is disorderly, has the advantages that simple structure, low cost and good stability.

Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every The equivalent structure made using the utility model specification and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in Other related technical fields, are included in scope of patent protection of the present utility model in the same manner.

Claims (7)

1. a kind of audio frequency IC-card, it is characterised in that including safety chip, contact module, non-contact modular, audio-frequency module and cut Switch is changed, the audio-frequency module has working condition and off working state, and the switching switch is electrically connected with the audio-frequency module And for switching the working condition residing for the audio-frequency module, the safety chip includes power port, contact port, noncontact Port, audio port and GPIO port, the contact module are electrically connected with the power port and the contact port, described non- Contact module is electrically connected with the noncontact port, the audio-frequency module and the power port, the audio port and institute GPIO port electrical connection is stated, the switching switch is arranged between the audio-frequency module and the power port and the audio frequency Between the GPIO port of module and the safety chip.

2. audio frequency IC-card according to claim 1, it is characterised in that the audio-frequency module includes audio frequency power subsystem and honeybee Ring piece, the audio frequency power subsystem are electrically connected with the power port and the GPIO port respectively by the switching switch, The piezo is electrically connected with the audio port.

3. audio frequency IC-card according to claim 2, it is characterised in that the switching switch includes the first switching switch and the Two switching switches, the first switching switch positioned between the audio-frequency module and the power port, open by second switching Off-position is between the GPIO port of the audio-frequency module and the safety chip.

4. audio frequency IC-card according to claim 3, it is characterised in that the first switching switch is positioned at the safety chip Power port positive pole and the positive pole of the audio frequency power subsystem between, it is for providing electric energy for the safety chip and described Second switching switch is connect for distinguishing between the GPIO port and the positive pole of the audio frequency power subsystem of the safety chip Touch formula and audio mode, gate audio mode.

5. audio frequency IC-card according to claim 3, it is characterised in that the first switching switch is positioned at the safety chip Power cathode and the negative pole of the audio frequency power subsystem between, for providing electric energy, and described second for the safety chip Switching switch contacts mould for distinguishing between the GPIO port and the negative pole of the audio frequency power subsystem of the safety chip Formula and audio mode, gate audio mode.

6. audio frequency IC-card according to claim 1, it is characterised in that the contact module includes 7816 interfaces and external electrical Source, 7816 interface are electrically connected with the contact port, and the external power source is electrically connected with the power port.

7. audio frequency IC-card according to claim 1, it is characterised in that the non-contact modular include RF antennas and with it is described The antenna power supply unit of RF antennas electrical connection, the antenna power supply unit are electrically connected with the noncontact port.