CN103390303A - Financial key based on audio frequency and USB data transmission and control method thereof - Google Patents
Financial key based on audio frequency and USB data transmission and control method thereof Download PDFInfo
- Publication number
- CN103390303A CN103390303A CN201310266438XA CN201310266438A CN103390303A CN 103390303 A CN103390303 A CN 103390303A CN 201310266438X A CN201310266438X A CN 201310266438XA CN 201310266438 A CN201310266438 A CN 201310266438A CN 103390303 A CN103390303 A CN 103390303A
- Authority
- CN
- China
- Prior art keywords
- secret key
- audio frequency
- audio
- connects
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a financial key based on audio frequency and USB data transmission, which comprises an audio frequency interface that connects an external audio frequency device to receive or output audio signal; a USB interface that connects external device to provide power supply to the key and transmit signal; an audio signal converting circuit that connects the audio frequency interface to output the audio signal after processing; a safety chip that connects the audio frequency interface to receive the audio signal through an audio signal converting circuit, and connects an external device through the USB interface; a battery that stores electric energy and provides power supply to the key; a battery management chip that connects the battery and controls charge and discharge to the battery; and a power control unit that connects the battery management chip, the audio frequency interface and the safety chip respectively by circuits. According to the invention, capacitance-resistance network is used to replace an AD/DA module, which reduces audio frequency key panel complexion and saves cost; and static power consumption control method and dynamic power consumption control method are used for command processing to reduce system power consumption.
Description
Technical field
The present invention relates to a kind of audio frequency secret key, be specifically related to a kind of Low Power High Performance finance secret key and control method thereof based on audio frequency and usb data transmission.
Background technology
Be accompanied by developing rapidly of Internet technology, e-commerce development is swift and violent in recent years, so how to guarantee to conclude the business the particularly security of user's Net silver, the also problem with regard to having become people to be concerned about most.Transaction based on PC is mainly to guarantee with USB (universal serial bus) (Universal Serial BUS, USB) secret key (key) at present.USBKey is mainly used to store digital certificate, and in USBKey inside, carries out signature authentication, and the key of USBKey can not be derived forever simultaneously, has guaranteed like this security of communication interaction.
But along with popularizing of the mobile InterWorking Equipments such as smart mobile phone, transaction no longer is confined to traditional network trading based on PC, therefore, the safe key of various movement-based interconnecting terminals just occurred, as, apple key, safe SD card and audio frequency key etc.These several key have a common weakness, and that is exactly no matter to be that apple key or safe SD card are all targeted, as apple key, are only suitable for product in apple, and safe SD card needs mobile InterWorking Equipment that SD(TF is arranged) interface.But we know, are that the mobile InterWorking Equipments such as smart mobile phone or pad all have audio interface, therefore, and the smart mobile phone that the audio frequency key that carries out data transmission by audio interface basically can the compatible overwhelming majority and pad etc.
Audio frequency key generally adopts lithium battery power supply, and the 3.5mm audio interface by standard is connected to realize two-way data transmission with smart mobile phone or pad.During communication, the microphone of smart mobile phone is as input channel, and earphone is as output channel.Compare with the key of other types, audio frequency key is except safe, and outside characteristics easy to carry, compatible making well in its application of encryption and decryption at the movement-based InterWorking Equipment has more advantage.But present audio frequency key product is the circuit more complicated mostly, need to use AD and DA and do the data-switching of safety chip and smart mobile phone end, and the complexity that this just makes the pcb board of key become, cause cost higher, and power consumption is also higher simultaneously.The present invention has proposed improvement project for these problems, and in the elevator system performance, the complexity of pcb board and power consumption have all obtained effectively reducing, and make product more press close to consumer demand.
Summary of the invention
The invention provides a kind of financial secret key and control method thereof based on audio frequency and usb data transmission, support that audio interface connects, USB interface connects, and can be used for mobile phone, the authentication of panel computer and computer terminal and data encrypting and deciphering, low cost, low-power consumption.
For achieving the above object, the invention provides a kind of financial secret key based on audio frequency and usb data transmission, be characterized in, this secret key comprises:
Audio interface, it connects external audio frequency apparatus, receives or output audio signal;
USB interface, it connects external equipment, is used for power supply and signal transmission to secret key;
The sound signal change-over circuit, it connects audio interface, and sound signal is processed rear output;
Safety chip, it connects the audio interface received audio signal by the sound signal change-over circuit; And by USB interface, be connected to external equipment;
Battery, it is used for storage of electrical energy, and secret key is powered;
Battery management chip, it connects battery, and battery is discharged and recharged control;
Power control unit, it is circuit connection battery management chip, audio interface, safety chip respectively;
When audio interface is not connected external equipment with USB interface, the Circuits System of secret key is not powered, powered-down;
When only having USB interface to connect external equipment, by the Circuits System power supply of USB interface to secret key, battery management chip is controlled battery is charged simultaneously;
When only having audio interface to connect external audio frequency apparatus, power control unit is controlled the Circuits System power supply of battery to secret key by battery management chip.
Above-mentioned power control unit also circuit is connected with linear voltage regulator, and by the Circuits System power supply of this linear voltage regulator to secret key.
Above-mentioned sound signal change-over circuit is connected by the bus extender circuit with safety chip before.
Above-mentioned sound signal change-over circuit adopts resistance-capacitance network.
Above-mentioned sound signal change-over circuit comprises audio input circuit and audio output circuit;
Above-mentioned audio input circuit comprises the second electric capacity, and the two ends of the second electric capacity are connected to respectively the L channel of safety chip input end and audio interface; Between the second electric capacity and safety chip input end, circuit is connected with the 3rd resistance and the 4th resistance; The 3rd resistance eutral grounding, the 4th resistance connects power supply;
Above-mentioned audio output circuit comprises the second resistance and the first electric capacity that is connected in series; The second resistance connects the safety chip output terminal, and the first electric capacity connects the microphone end of audio interface; Between the second resistance and the first electric capacity, circuit is connected with the first resistance, this first resistance eutral grounding.
Above-mentioned power control unit comprises: the second inductance that is connected in series, the 5th resistance and triode; The second inductance connects the R channel of audio interface, the base stage of the 5th resistance connecting triode; The emitter of triode connects battery management chip, and collector connects the circuit system of secret key; Between the emitter of the 5th resistance and triode, circuit is connected with the 6th resistance.
The external equipment that above-mentioned USB interface connects comprises: computing machine, panel computer or mobile phone.
Above-mentioned secret key intercommunication and with the signal data of PERCOM peripheral communication, adopt the Manchester's cde mode.
The quiescent dissipation control method of a kind of as above-mentioned financial secret key based on audio frequency and usb data transmission, be characterized in, the method comprises: when the audio frequency secret key is connected to external audio frequency apparatus, and the triode conducting in power control unit, this moment, battery was to system power supply;
When the audio frequency secret key need not, while not connecting audio frequency apparatus, connect R channel one end of audio interface for opening a way, the triode cut-off, system is not powered.
The dynamic power consumption control method of a kind of as above-mentioned financial secret key based on the transmission of audio frequency and usb data, be characterized in, the method comprises: in work, at first the module clock do not used in applying of safety chip is closed;
And after each command process is completed, safety chip enters sleep pattern, and when external command was arranged, the level variation on bus extender woke safety chip up again, safety chip starts to receive and processes next external command, and after external command is completed, safety chip enters again sleep pattern.
The present invention is based on audio frequency and the financial secret key of usb data transmission and the audio frequency secret key of control method and prior art thereof compares, its advantage is, adopt simple resistance-capacitance network to replace the AD/DA module in the present invention, the pcb board face complexity of audio frequency secret key is reduced, can save 30% cost;
The present invention when removing the AD/DA module, adopts quiescent dissipation control method and dynamic power consumption control method by command process, has reduced the power consumption of system.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on the financial secret key of audio frequency and usb data transmission;
Fig. 2 is the circuit diagram of sound signal change-over circuit that the present invention is based on the financial secret key of audio frequency and usb data transmission;
Fig. 3 is the circuit diagram of power control unit that the present invention is based on the financial secret key of audio frequency and usb data transmission;
Fig. 4 be the present invention is based on the transmission of audio frequency and usb data financial secret key the secret key intercommunication and with the signal data oscillogram of PERCOM peripheral communication;
Fig. 5 is the communications protocol case1 figure that the present invention is based on the financial secret key of audio frequency and usb data transmission;
Fig. 6 is the communications protocol case2 figure that the present invention is based on the financial secret key of audio frequency and usb data transmission;
Fig. 7 is the communications protocol case3 figure that the present invention is based on the financial secret key of audio frequency and usb data transmission;
Fig. 8 is the communications protocol case4 figure that the present invention is based on the financial secret key of audio frequency and usb data transmission.
Embodiment
Further illustrate specific embodiments of the invention below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention discloses a kind of financial secret key based on audio frequency and usb data transmission, this finance secret key is a kind of audio frequency secret key, it comprises: audio interface 5, USB interface 6(USB (universal serial bus), Universal Serial BUS), sound signal change-over circuit 2, safety chip 1, battery 3, battery management chip 4, power control unit and linear voltage regulator (low dropout regulator, LDO).
Sound signal change-over circuit 2 circuit connect audio interface 5, to through sound signal process after output.Sound intermediate frequency signaling conversion circuit 2 of the present invention adopts simple resistance-capacitance network to substitute the AD/DA module of prior art, and the audio port of mobile internet equipment directly is connected by simple resistance-capacitance network with the GPIO mouth of safety chip.
It is the safety chip of AC3192 that safety chip 1 adopts model, it is by bus extender (GPIO, General Purpose Input Output, universal input/output) circuit connection sound signal change-over circuit 2, connect audio interface 5 received audio signals by sound signal change-over circuit 2.This safety chip 1 also is connected to external equipment by USB interface 6.
Battery 3 adopts lithium battery, and it is used for storage of electrical energy, and sound signal change-over circuit 2, safety chip 1, audio interface 5, the USB interface 6 of secret key circuit system are powered.
Battery management chip 4 circuit connect battery 3, are used for battery 3 is discharged and recharged control.
Power control unit circuit respectively connects battery management chip 4, the R channel of audio interface 5, safety chip 1.
Linear voltage regulator is connected with the power control unit circuit, and power control unit is powered to the circuit system of secret key by the input end of the LDO linear voltage regulator of 3.3V.
When audio interface 5 is not connected external equipment with USB interface 6, the Circuits System of secret key is not powered, powered-down.
When only having USB interface 6 to connect external equipment, by the Circuits System power supply of 6 pairs of secret keys of USB interface, battery management chip 4 is controlled battery 3 chargings simultaneously.
When only having audio interface 5 to connect external audio frequency apparatus, power control unit is controlled the Circuits System power supply of battery 3 to secret key by battery management chip 4.
As shown in Figure 2, in the present embodiment, sound signal change-over circuit 2 comprises audio input circuit and audio output circuit.
The two ends that audio input circuit comprises the second capacitor C 2, the second capacitor C 2 are connected to respectively A_In end and A_Out end, and the A_In end connects safety chip 1 input end, and M_Out connects the L channel of audio interface.Between the second capacitor C 2 and safety chip input end, circuit is connected with the 3rd resistance R 3 and the 4th resistance R 4; The 3rd resistance R 3 ground connection, the 4th resistance R 4 meets the power vd D of 3.3V.Wherein, the second capacitor C 2 is 100nF, and the 3rd resistance R 3 is 51k Ω, and the 4th resistance R 4 is 51 k Ω.
Audio output circuit comprises the second resistance R 2 and the first capacitor C 1 that is connected in series; The second resistance R 2 connects the A_Out end, and the A_Out end is connected to the safety chip output terminal; The first capacitor C 1 connects the M_In end, and the M_In end is connected to the microphone end of audio interface 5.Between the second resistance R 2 and the first capacitor C 1, circuit is connected with the first resistance R 1, this first resistance R 1 ground connection.Wherein the first resistance R 1 and the second resistance R 2 are 51 k Ω, and the first capacitor C 1 is 100nF.
Because the GPIO mouth is output as 3.3V VPP, for fear of may damaging of the audio input circuit to mobile InterWorking Equipment, therefore adopt the first resistance R 1, the second resistance R 2 to do voltage division processing, just can enter the audio input port of mobile InterWorking Equipment after removing wherein DC component by electric capacity more afterwards.
The input range of the GPIO mouth of safety chip 1 is 0-3.3V, and the audio output signal of mobile InterWorking Equipment does not have DC component, namely have just having negative, therefore as shown in below in Fig. 2, by the 3rd resistance R 3, the 4th resistance R 4 is given the audio output signal of the mobile InterWorking Equipment DC component (1.65V) that superposeed, and is beneficial to safety chip 1 and processes.The IO mouth of safety chip 1 is as when input, and the minimum of input high level is 2.0V, and the mxm. during input low level is 0.8V, can, by the media output volume of adjusting cellphone, make its Vpp can make the correct identification input signal of safety chip 1 greater than 1V.When using the audio frequency secret key, software can first record current media volume, afterwards the media volume is adjusted to maximum, the normal transmitting-receiving of data when can guarantee communication fully this moment, and the size before after application finishes, software recovers the media volume again gets final product.
As shown in Figure 3, power control unit comprises: the second inductance L 2 that is connected in series, the 5th resistance R 12 and triode Q1.The second inductance L 2 connects the AR end, the AR terminal circuit connects the R channel of audio interface 5, the base stage of the 5th resistance R 12 connecting triode Q1, and the emitter of triode Q1 connects the VBat end, this VBat terminal circuit connects battery management chip 4, by battery management chip 4, connects and controls battery 3.The collector of triode Q1 connects the VLDO_IN end, and the VLDO_IN end is by the modules in linear voltage regulator LDO connection secret key circuit system.Between the emitter of the 5th resistance R 12 and triode Q1, circuit is connected with the 6th resistance R 13.Wherein, the second inductance L 2 is 100uH, and the 5th resistance R 12 is 10 k Ω, and the 6th resistance R 13 is 100 k Ω.
When the audio frequency secret key was not connected to any equipment by audio interface 5 and USB interface 6, the AR end was unsettled, triode Q1 cut-off this moment, and system is not powered.When the audio frequency secret key is connected to computer PC by USB interface 6, triode Q1 cut-off, the power supply of system is provided by USB interface 6, this moment can be to lithium battery 3 chargings. when the audio frequency secret key is connected to mobile internet equipment by audio interface, triode Q1 conducting, the power supply of system is provided by lithium battery 3.
Therefore because audio output generally has coupling capacitance, output should be the continually varying signal, therefore adopt the uart transmission mode in the present invention, secret key intercommunication and with the signal data of PERCOM peripheral communication, adopt the mode of Manchester's cde.The waveform of as shown in Figure 4, the first half is respectively ' 0 ' and ' 1 ', the latter half is the waveform of a byte, the waveform table registration in figure is according to 0x5A.
The communications protocol of audio frequency secret key and mobile InterWorking Equipment: each data communication is always initiated by mobile InterWorking Equipment end.Base unit when audio frequency secret key and mobile InterWorking Equipment communication is bag, every bag data composed as follows, and wherein LOAD section maximum length is 200Bytes:
| HEAD(1 Byte) | LEN(1 Byte) | LOAD(LEN Bytes) |
The definition of LOAD section is with reference to general 7816 agreements, defined respectively case1, case2,4 kinds of communication modes such as case3 and case4, wherein the HEAD field is data packet head, be fixed as 0xFF or 0x00, this is because the actual recording of some mobile phone the possibility of result can be anti-phase, can select corresponding decoding process according to the HEAD field of receiving during data decode.Len field is the total length of LOAD section in packet, is 0xC8 to the maximum.The LOAD section is the data that packet comprises.
Command format is specially:
| The CMD(5 byte) | The XOR(1 byte) | The DATA(n byte) | The XOR(1 byte) |
The CMD field:
| CLA | INS | P1 | P2 | LC/Le |
CLA:Class, can be specifically with reference to 7816 relevant documentations.
INS:Instructions, can be specifically with reference to 7816 relevant documentations.
The LC(1 byte): the length that sends data.The length of the DATA of order head back, do not comprise check code.
The Le(1 byte): the data length that expectation is returned.Do not comprise the CRC that returns and the length of state.
XOR: command header is divided XOR check code totally 1 byte.
The Stuff(2 byte): arbitrary data.
DATA: data, length equals LC.
XOR: data division exclusive or check code, totally 1 byte.
The form of command response is:
| DATA | STATUS | The XOR(1 byte) |
DATA: the data of returning.
STATUS: status word.Can be specifically with reference to 7816 relevant documentations.
| SW1 | SW2 |
XOR: data division and state part XOR value do not comprise HEAD.
As shown in Figure 5, be the case1 communication mode, this case is without data transmission, and mobile InterWorking Equipment sends order (5Bytes), return state code after the audio frequency key command is processed.
As shown in Figure 6, be the case2 communication mode, the process of this case is: mobile InterWorking Equipment sends order (5Bytes), return data and status code after the audio frequency key command is processed.
As shown in Figure 7, be the case3 communication mode, the process of this case is: mobile InterWorking Equipment is sent to the audio frequency secret key with data and order, and the audio frequency secret key is processed data and the order that receives, and the return state code
As shown in Figure 8, be the case4 communication mode, this case divides three parts, is respectively the initial order stage, data phase and the finish command stage.Command phase is to tell that by the order of similar case1 audio frequency secret key follow-up data is to encrypt or deciphering, and with what algorithm etc., ending phase is told all processing of data of this case of audio frequency secret key.Be with the difference of three case of front: three of front case or there is no data transmission at first, or be unidirectional data transmission, and case4 is the two-way data transmission that has; Secondly, three of fronts case only has a transmitting-receiving bout, namely by mobile InterWorking Equipment, sends a command to safety chip, the safety chip rear return state code of finishing dealing with, a case has just completed, and case4 is order and data transmission and return data and the status code that multi-round is arranged.Such benefit is, for large batch of data encrypting and deciphering, processes, and the efficiency of case4 will be far above three case of front.
The present invention also discloses a kind of quiescent dissipation control method of the financial secret key based on audio frequency and usb data transmission, and the method comprises:
When the audio frequency secret key is connected to external audio frequency apparatus (mobile InterWorking Equipment), the triode Q1 conducting in power control unit, this moment, battery 3 was to system power supply.
When the audio frequency secret key need not, not connect audio frequency apparatus (mobile InterWorking Equipment), R channel one end that connects audio interface 5 was open circuit, triode Q1 cut-off, and system is not powered.
Can effectively reduce the quiescent dissipation of system by this circuit, extend the service time of battery.
The present invention also discloses a kind of dynamic power consumption control method of the financial secret key based on audio frequency and usb data transmission, and the method comprises:
In secret key work, for different application, at first the module clock do not used in applying of safety chip 1 is closed.
And after each command process is completed, safety chip 1 enters sleep pattern, and when external command was arranged, the level variation on bus extender woke safety chip 1 up again, safety chip 1 starts to receive and processes next external command, and after external command is completed, safety chip 1 enters again sleep pattern.
, although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. the financial secret key based on audio frequency and usb data transmission, is characterized in that, this secret key comprises:
Audio interface (5), it connects external audio frequency apparatus, receives or output audio signal;
USB interface (6), it connects external equipment, is used for power supply and signal transmission to secret key;
Sound signal change-over circuit (2), it connects described audio interface (5), and sound signal is processed rear output;
Safety chip (1), it connects described audio interface (5) received audio signal by described sound signal change-over circuit (2); And by USB interface (6), be connected to external equipment;
Battery (3), it is used for storage of electrical energy, and secret key is powered;
Battery management chip (4), it connects described battery (3), and battery (3) is discharged and recharged control;
Power control unit, it is circuit connection described battery management chip (4), audio interface (5), safety chip (1) respectively;
When audio interface (5), is not powered to the Circuits System of secret key while not being connected external equipment with USB interface (6), powered-down;
When only having USB interface (6) to connect external equipment, by the Circuits System power supply of USB interface (6) to secret key, battery management chip (4) is controlled battery (3) is charged simultaneously;
When only having audio interface (5) to connect external audio frequency apparatus, power control unit is controlled the Circuits System power supply of battery (3) to secret key by battery management chip (4).
2. the financial secret key based on audio frequency and usb data transmission as claimed in claim 1, is characterized in that, described power control unit also circuit is connected with linear voltage regulator, and by the Circuits System power supply of this linear voltage regulator to secret key.
3. the financial secret key based on audio frequency and usb data transmission as claimed in claim 1, is characterized in that, described sound signal change-over circuit (2) is connected by the bus extender circuit before with safety chip (1).
4. the financial secret key based on audio frequency and usb data transmission as described in claim 1 or 3, is characterized in that, described sound signal change-over circuit (2) adopts resistance-capacitance network.
5. the financial secret key based on audio frequency and usb data transmission as claimed in claim 3, is characterized in that, described sound signal change-over circuit (2) comprises audio input circuit and audio output circuit;
Described audio input circuit comprises the second electric capacity (C2), and the two ends of the second electric capacity (C2) are connected to respectively the L channel of safety chip input end (A_In) and audio interface; Between the second electric capacity (C2) and safety chip input end, circuit is connected with the 3rd resistance (R3) and the 4th resistance (R4); The 3rd resistance (R3) ground connection, the 4th resistance (R4) connects power supply (VDD);
Described audio output circuit comprises the second resistance (R2) and the first electric capacity (C1) that is connected in series; The second resistance (R2) connects safety chip output terminal (A_Out), and the first electric capacity (C1) connects the microphone end of audio interface; Between the second resistance (R2) and the first electric capacity (C1), circuit is connected with the first resistance (R1), this first resistance (R1) ground connection.
6. the financial secret key based on audio frequency and usb data transmission as claimed in claim 1, is characterized in that, described power control unit comprises: the second inductance (L2) that is connected in series, the 5th resistance (R12) and triode (Q1); The second inductance (L2) connects the R channel of audio interface, the base stage of the 5th resistance (R12) connecting triode (Q1), and the emitter of triode (Q1) connects battery management chip (4), and collector connects the circuit system of secret key; Between the emitter of the 5th resistance (R12) and triode (Q1), circuit is connected with the 6th resistance (R13).
7. the financial secret key based on audio frequency and usb data transmission as claimed in claim 1, is characterized in that, the external equipment that described USB interface (6) connects comprises: computing machine, panel computer or mobile phone.
8. the financial secret key based on the transmission of audio frequency and usb data as claimed in claim 1, is characterized in that, described secret key intercommunication and with the signal data of PERCOM peripheral communication, adopt the Manchester's cde mode.
9. one kind as claimed in claim 1 based on the quiescent dissipation control method of the financial secret key of audio frequency and usb data transmission, it is characterized in that, the method comprises: when the audio frequency secret key is connected to external audio frequency apparatus, triode in power control unit (Q1) conducting, battery this moment (3) is to system power supply;
When the audio frequency secret key need not, while not connecting audio frequency apparatus, connect R channel one end of audio interface for opening a way, triode (Q1) cut-off, system is not powered.
10. one kind as claimed in claim 1 based on the dynamic power consumption control method of the financial secret key of audio frequency and usb data transmission, it is characterized in that, the method comprises: in work, at first the module clock do not used in applying of safety chip (1) is closed;
And after each command process is completed, safety chip (1) enters sleep pattern, when external command is arranged, level variation on bus extender wakes safety chip (1) up again, safety chip (1) starts to receive and processes next external command, and safety chip after external command is completed (1) enters again sleep pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266438.XA CN103390303B (en) | 2013-06-28 | 2013-06-28 | Based on financial key and the control method thereof of audio frequency and USB data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266438.XA CN103390303B (en) | 2013-06-28 | 2013-06-28 | Based on financial key and the control method thereof of audio frequency and USB data transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103390303A true CN103390303A (en) | 2013-11-13 |
| CN103390303B CN103390303B (en) | 2016-01-06 |
Family
ID=49534557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310266438.XA Active CN103390303B (en) | 2013-06-28 | 2013-06-28 | Based on financial key and the control method thereof of audio frequency and USB data transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103390303B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763661A (en) * | 2014-01-28 | 2014-04-30 | 天地融科技股份有限公司 | Intelligent secret key device and audio signal transmission system |
| CN103926867A (en) * | 2014-05-04 | 2014-07-16 | 张金奎 | Information transmission method based on audio signals |
| CN105700983A (en) * | 2014-11-26 | 2016-06-22 | 北京握奇智能科技有限公司 | USBKey and USBKey working mode judgment method |
| CN106327629A (en) * | 2016-08-12 | 2017-01-11 | 广西大学 | Method for controlling unlocking and locking by transmitting password through audio channel |
| CN110024207A (en) * | 2016-12-05 | 2019-07-16 | 三星Sdi株式会社 | Control unit for battery system |
| CN112820303A (en) * | 2020-12-31 | 2021-05-18 | 北京握奇数据股份有限公司 | Audio interface authentication device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104525U (en) * | 1990-06-20 | 1992-05-13 | 长沙市公安局 | Automatic storing tele-translator for radio communication |
| CN1514384A (en) * | 2003-07-18 | 2004-07-21 | 李F杰 | External mobile storage type music broading device and its use method |
| US20090327731A1 (en) * | 2004-11-02 | 2009-12-31 | Guido Appenzeller | Security device for cryptographic communications |
| US20100324914A1 (en) * | 2009-06-18 | 2010-12-23 | Jacek Piotr Stachurski | Adaptive Encoding of a Digital Signal with One or More Missing Values |
| CN202004846U (en) * | 2011-04-02 | 2011-10-05 | 信雅达系统工程股份有限公司 | Cellphone shield capable of protecting mobile payment security |
| CN202435461U (en) * | 2011-12-31 | 2012-09-12 | 深圳天珑无线科技有限公司 | Damping horn |
| CN102855561A (en) * | 2012-07-31 | 2013-01-02 | 长沙锐得信息科技有限公司 | Mobile phone payment device and payment method based on security chips and sound carrier wave communication |
| CN102902350A (en) * | 2012-11-13 | 2013-01-30 | 江苏东大集成电路系统工程技术有限公司 | Chip extra-low in standby power consumption |
-
2013
- 2013-06-28 CN CN201310266438.XA patent/CN103390303B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104525U (en) * | 1990-06-20 | 1992-05-13 | 长沙市公安局 | Automatic storing tele-translator for radio communication |
| CN1514384A (en) * | 2003-07-18 | 2004-07-21 | 李F杰 | External mobile storage type music broading device and its use method |
| US20090327731A1 (en) * | 2004-11-02 | 2009-12-31 | Guido Appenzeller | Security device for cryptographic communications |
| US20100324914A1 (en) * | 2009-06-18 | 2010-12-23 | Jacek Piotr Stachurski | Adaptive Encoding of a Digital Signal with One or More Missing Values |
| CN202004846U (en) * | 2011-04-02 | 2011-10-05 | 信雅达系统工程股份有限公司 | Cellphone shield capable of protecting mobile payment security |
| CN202435461U (en) * | 2011-12-31 | 2012-09-12 | 深圳天珑无线科技有限公司 | Damping horn |
| CN102855561A (en) * | 2012-07-31 | 2013-01-02 | 长沙锐得信息科技有限公司 | Mobile phone payment device and payment method based on security chips and sound carrier wave communication |
| CN102902350A (en) * | 2012-11-13 | 2013-01-30 | 江苏东大集成电路系统工程技术有限公司 | Chip extra-low in standby power consumption |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763661A (en) * | 2014-01-28 | 2014-04-30 | 天地融科技股份有限公司 | Intelligent secret key device and audio signal transmission system |
| CN103763661B (en) * | 2014-01-28 | 2017-06-06 | 天地融科技股份有限公司 | Intelligent cipher key equipment and audio frequency signal transmission system |
| CN103926867A (en) * | 2014-05-04 | 2014-07-16 | 张金奎 | Information transmission method based on audio signals |
| CN105700983A (en) * | 2014-11-26 | 2016-06-22 | 北京握奇智能科技有限公司 | USBKey and USBKey working mode judgment method |
| CN105700983B (en) * | 2014-11-26 | 2019-06-18 | 北京握奇智能科技有限公司 | A kind of judgment method of USBKey and USBKey operating mode |
| CN106327629A (en) * | 2016-08-12 | 2017-01-11 | 广西大学 | Method for controlling unlocking and locking by transmitting password through audio channel |
| CN106327629B (en) * | 2016-08-12 | 2018-07-27 | 广西大学 | A method of cipher control open locking is transmitted by voice-grade channel |
| CN110024207A (en) * | 2016-12-05 | 2019-07-16 | 三星Sdi株式会社 | Control unit for battery system |
| CN112820303A (en) * | 2020-12-31 | 2021-05-18 | 北京握奇数据股份有限公司 | Audio interface authentication device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103390303B (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103390303B (en) | Based on financial key and the control method thereof of audio frequency and USB data transmission | |
| US9031505B2 (en) | Filtering a single wire protocol (SWP) current signal to be provided to a near field communications (NFC) device | |
| CN103123678B (en) | Magnetic card reader | |
| CN103679239A (en) | Radio frequency reader-writer and radio frequency identification system | |
| CN204810255U (en) | Clock recovery framework is permitd to incline and system thereof | |
| CN202167034U (en) | Peripheral application device and mobile terminal system | |
| CN103309408A (en) | Function extension combination module for intelligent terminal | |
| CN103107880A (en) | Safety certificate device | |
| CN103376876B (en) | Audio Interface Unit and method for managing power supply thereof | |
| CN203759722U (en) | Radio frequency reader/writer and radio frequency identification system | |
| CN201251760Y (en) | Power supply device of direct current power supply capable of outputting correct voltage according to electrical equipment | |
| CN202110573U (en) | USB key | |
| CN202512578U (en) | Magnetic card reader | |
| CN112118004B (en) | SWP interface circuit and terminal | |
| CN102855456A (en) | Card reader | |
| CN106909865A (en) | Near-field communication front end hardware circuit, terminal, read write line, system and method | |
| CN202694349U (en) | USBKey with variety of interface modes | |
| CN204481913U (en) | The system of CPU card is read based on mobile audio interface | |
| CN206004900U (en) | Raise one's voice equipment and terminal assembly | |
| CN203632546U (en) | Power output device and computer | |
| CN204719886U (en) | A kind of mobile payment companion | |
| CN204242185U (en) | A kind of USBKey | |
| CN217113271U (en) | Data interface conversion circuit and converter | |
| CN213185644U (en) | Wireless direct current receiving and information interaction circuit | |
| CN216352107U (en) | Modular data acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200233 Room 704, Building 2, No. 2570 Hechuan Road, Minhang District, Shanghai Patentee after: Shanghai Hangxin Electronic Technology Co.,Ltd. Address before: 200241, building 6, building 555, No. 8, Dongchuan Road, Shanghai, Minhang District Patentee before: SHANGHAI AISINOCHIP ELECTRONIC TECHNOLOGY Co.,Ltd. |