CN107094037A - The front end hardware circuit of dynamic token and its method for awarding seed or production configuration - Google Patents
The front end hardware circuit of dynamic token and its method for awarding seed or production configuration Download PDFInfo
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- CN107094037A CN107094037A CN201710184295.6A CN201710184295A CN107094037A CN 107094037 A CN107094037 A CN 107094037A CN 201710184295 A CN201710184295 A CN 201710184295A CN 107094037 A CN107094037 A CN 107094037A
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- 238000004891 communication Methods 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
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- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
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Classifications
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- H04B5/48—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN
- H04L9/3228—One-time or temporary data, i.e. information which is sent for every authentication or authorization, e.g. one-time-password, one-time-token or one-time-key
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
Abstract
The present invention is applied to near-field communication field, there is provided a kind of front end hardware circuit of dynamic token, dynamic token, card reader, OTP near field communication systems and dynamic token award seed or production configuration method, card reader to dynamic token award seed or write-in produce configuration method, the circuit is built by discrete device, including near field coil, matching capacitance；Detection unit, the carrier wave in seed or production configuration data for filtering out reception, obtains former modulated signal, detection unit is connected near field coil；Communication interface pin units, for former modulated signal to be exported to micro-control unit, communication interface pin units are connected between detection unit and micro-control unit.The present invention awards seed by the front end hardware circuit realiration of the dynamic token built based on discrete device or production is configured, without setting contact, it is to avoid processing step is complicated caused by secondary encapsulation, the problem of production life cycle length and high cost.
Description
Technical field
The invention belongs to near-field communication field, more particularly to the front end hardware circuit of dynamic token a kind of, dynamic token, reading
Card device OTP near field communication systems and dynamic token award seed or method, the card reader of production configuration award seed to dynamic token
Or the method for write-in production configuration.
Background technology
Near-field communication technology is recognized (Radio Frequency Identification, RFID) by non-contact radio-frequency
And Technology Integration differentiation of interconnecting, combining induction read write line, icah wavw and point-to-point on one chip
Function, can be identified and data exchange with compatible equipment in short distance.This current technology is widely used, and such as bank is double
Interface card, novel visual bank card, OTP (One-time Password, dynamic token) cards etc..
It is general using contact contact transmission data however, at present when producing OTP card, do production configuration and
Client is required in structure reserving contact, causes product fully enclosed, it is necessary to award seed when OTP awards seed
After carry out secondary encapsulation, its technique is cumbersome, causes production cost to increase.
The content of the invention
The purpose of the embodiment of the present invention is the front end hardware circuit for providing a kind of dynamic token, it is intended to solve existing OTP
Card needs to reserve the problem of contact results in the need for secondary encapsulation in structure using contact contact transmission data.
The embodiment of the present invention is achieved in that a kind of front end hardware circuit of dynamic token, and the circuit passes through discrete
Device is built, including：
Near-field communication aerial, detection unit and communication interface pin units；
The near-field communication aerial includes near field coil and matching capacitance, the frequency of the near field coil and the carrier wave chosen
Frequency is matched；
The detection unit, the carrier wave in seed or production configuration data for filtering out reception, obtains former modulated signal,
The detection unit is connected with the near field coil；
The communication interface pin units, for the former modulated signal to be exported to micro-control unit, the communication connects
Mouth pin units are connected between the input and output pin of the output end of the detection unit and the micro-control unit.
The another object of the embodiment of the present invention is that there is provided a kind of the dynamic of front end hardware circuit including above-mentioned dynamic token
State token.
The another object of the embodiment of the present invention is that there is provided a kind of reading of the front end hardware circuit including above-mentioned dynamic token
Card device.
The another object of the embodiment of the present invention is that, there is provided a kind of OTP near field communication systems, the system includes above-mentioned dynamic
State token and above-mentioned card reader.
The another object of the embodiment of the present invention is to configure there is provided a kind of awarding seed or producing based on above-mentioned dynamic token
Method, methods described includes：
Receive seed or production configuration data that read write line is sent；
Carrier signal in the seed or production configuration data is filtered by detection unit, former modulated signal is obtained；
The former modulated signal is exported to micro-control unit by communication interface pin units；
Inform that completion is awarded to read write line to plant or production configuration.
The another object of the embodiment of the present invention is to award to dynamic token there is provided a kind of card reader based on above-mentioned card reader
Seed or the method for write-in production configuration, methods described include：
Seed or production configuration data are modulated by carrier wave, generation sends information, and the transmission information includes：Mark
The signal of the modulation format of the frequency modulation or amplitude modulation of quasi- interface signal or customized low speed；
The transmission information is sent to dynamic token by communication interface pin units, so that the dynamic token is completed
Award seed or production configuration；
Receive and demodulate that completions that the dynamic token sends is awarded kind or production is configured informs signal.
The embodiment of the present invention by the front end hardware circuit realiration for the dynamic token built based on discrete device award seed or
Person's production configuration, the program in OTP card without setting contact, it is not necessary to which secondary encapsulation, is that can be achieved only by radio communication,
It is complicated so as to avoid existing OTP card processing step caused by secondary encapsulation, the problem of production life cycle length and high cost.
Brief description of the drawings
Fig. 1 is the structure chart of the front end hardware circuit of dynamic token provided in an embodiment of the present invention；
Fig. 2 is the exemplary circuit figure of the front end hardware circuit of dynamic token provided in an embodiment of the present invention；
Fig. 3 for dynamic token provided in an embodiment of the present invention front end hardware circuit in detection unit exemplary circuit figure；
Fig. 4 for dynamic token provided in an embodiment of the present invention front end hardware circuit in rear end matching unit exemplary circuit
Figure；
Fig. 5 is the flowage structure figure of the method for awarding seed or production configuration of dynamic token provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
The embodiment of the present invention by the front end hardware circuit realiration for the dynamic token built based on discrete device award seed or
Person's production configuration, the program in OTP card without setting contact, it is not necessary to which secondary encapsulation, is that can be achieved only by radio communication,
It is complicated so as to avoid existing OTP card processing step caused by secondary encapsulation, the problem of production life cycle length and high cost.
Fig. 1 shows the structure of the front end hardware circuit of dynamic token provided in an embodiment of the present invention, for convenience of description,
It illustrate only part related to the present invention.
As one embodiment of the invention, the front end hardware circuit of the dynamic token can apply to dynamic token, card reader
And in OTP near field communication systems, the front end hardware circuit of the dynamic token is built by discrete device, including：
Near-field communication aerial, detection unit 100 and communication interface pin units 14；
Near-field communication aerial includes near field coil 2 and matching capacitance C1, the frequency of near field coil 2 and the carrier frequency chosen
Matching；
Detection unit 100 includes one-way conduction unit 11 and filter unit 12, and seed or production for filtering out reception are matched somebody with somebody
The carrier wave in data is put, former modulated signal is obtained, detection unit 100 is connected near field coil 2；
Communication interface pin units 14, for former modulated signal to be exported to micro-control unit MCU, communication interface pin list
Member 14 is connected between detection unit and micro-control unit MCU.
In embodiments of the present invention, near-field communication aerial receives seed or the production configuration data that read write line is sent, and will plant
Son or production configuration data filter the carrier signal of modulated signal by detection unit 100, obtain former modulated signal, and original is adjusted
Signal processed is exported to micro-control unit MCU by communication interface pin units 14, and informs that kind or production are awarded in completion to read write line
Configuration.
The embodiment of the present invention by the front end hardware circuit realiration for the dynamic token built based on discrete device award seed or
Person's production configuration, the program in OTP card without setting contact, it is not necessary to which secondary encapsulation, is that can be achieved only by radio communication,
It is complicated so as to avoid existing OTP card processing step caused by secondary encapsulation, the problem of production life cycle length and high cost.
Fig. 2 shows the exemplary circuit of the front end hardware circuit of dynamic token provided in an embodiment of the present invention, for the ease of
Illustrate, illustrate only part related to the present invention.
As one embodiment of the invention, detection unit 100 includes one-way conduction unit 11 and filter unit 12；
One-way conduction unit 11 can be realized using diode, triode or metal-oxide-semiconductor, it is preferred to use diode D1, this two
Pole pipe D1 anode is connected for the input of one-way conduction unit 11 near field coil 2, and diode D1 negative electrode is one-way conduction
The output end of unit 11 is connected with filter unit 12.
Filter unit 12 includes：
Resistance R2 and electric capacity C2；
Resistance R2 one end is connected for the input of filter unit 12 with the output end of one-way conduction unit 11, resistance R2's
One end is connected for the output end of filter unit 12 with electric capacity C2 one end simultaneously, and electric capacity C2 one end is the output of filter unit 12
End is connected with communication interface pin units 14, and the resistance R2 other end is grounded simultaneously with the electric capacity C2 other end.
Above-mentioned filter unit 12 can also be substituted by other equivalent devices or circuit, and filter unit 12 can also be with
The Opposite direction connection of one-way conduction unit 11, the i.e. input of filter unit 12 are connected near field coil 2, the output end of filter unit 12
It is connected with the input of one-way conduction unit 11, the output end connection communication interface pin unit 14 of one-way conduction unit 11, such as
Shown in Fig. 3, filter unit 12 can also include：
Resistance R5, electric capacity C4 and inductance L1；
Electric capacity C4 one end is the input of filter unit 12, and the electric capacity C4 other end connects for the output end of filter unit 12
Connect, the electric capacity C4 other end is also grounded by resistance R5, and inductance L1 is in parallel with electric capacity C4.
Preferably, can be with series resistance between the output end of one-way conduction unit 11 and the input of filter unit 12
R3 is used to carry out load control.
As one embodiment of the invention, the front end hardware circuit of the dynamic token can also include：
Modulating unit 13 is loaded, for by controlling the load of near field coil 2 change to carry out load modulation and be sent completely
The modulated signal planted or produce configuration is awarded, load modulating unit 13 is connected with detection unit 100.
As one embodiment of the invention, load modulating unit 13 includes：
On-off circuit module 131 and load control module 132；
The first end of load control module 132 is connected with the output end of one-way conduction unit 11, load control module 132
Second end is connected with the current input terminal of on-off circuit module 131, the current output terminal ground connection of on-off circuit module 131, switch
The first control end GPIO, the second control end TX of circuit module 131 pass through communication interface pin units 14 and microcontroller list respectively
First MCU input/output interface GPIO, transmission signal end TX connections.
Preferably, on-off circuit module 131 includes：
Second switch pipe Q2 and the 3rd switching tube Q3；
Second switch pipe Q2 current input terminal is the current input terminal of on-off circuit module 131, second switch pipe Q2's
Current output terminal is the current output terminal of on-off circuit module 131, and second switch pipe Q2 control end is with the 3rd switching tube Q3's
Current output terminal is connected, and the 3rd switching tube Q3 current input terminal is the first control end of on-off circuit module 131, the 3rd switch
Pipe Q3 control end is the second control end of on-off circuit module 131.
In embodiments of the present invention, second switch pipe Q2 and the 3rd switching tube Q3 constitutes on-off circuit, passes through opening for metal-oxide-semiconductor
Concern, which is changed, can change the load of coil, and coil load change can be coupled to the transmit coil at read write line end, what read write line passed through
Transmit coil load change can demodulate modulation intelligence.
It is same by TX and bus extender (General Purpose Input Output, GPIO) in order to prevent false triggering
When control load switch.
Certainly, on-off circuit module 131 can also be realized by a switching tube, also or using a switching tube and concatenation
Resistance at switch controlled end is realized.
In embodiments of the present invention, on-off circuit module 131 plays load modulating action, can be only two switch shapes
State, or the load of a scope are modulated,
Load control module 132 includes：
Resistance R4；
Resistance R4 two ends are respectively first end and the second end of load control module 132.
Alternatively, resistance R4 can also be connected in parallel with a capacitor, and constitute load control module 132.
Communication interface pin units 14 are made up of RX, TX pin, and RX/TX can be directly connected to micro-control unit MCU etc.
Chip, or it is connected to the chips such as micro-control unit MCU by rear end matching unit.
Fig. 4 shows the example of rear end matching unit in the front end hardware circuit of dynamic token provided in an embodiment of the present invention
Circuit, for convenience of description, illustrate only part related to the present invention.
As one embodiment of the invention, the front end hardware circuit of the dynamic token also includes：
Rear end matching unit 15, for former modulated signal to be made decisions into matching, and passes through communication by the signal after matching
Interface pin unit 14 is exported to micro-control unit MCU, and rear end matching unit 15 is connected to detection unit 100 and drawn with communication interface
Between pin unit 14.
Rear end matching unit 15, which can be used, compares judgement unit or the realization of AD sampling units.
Specifically, comparing judgement unit includes：
Comparator U1 and resistance R2, resistance R3；
Comparator U1 positive input is connected with the output end of filter unit 12, and comparator U1 reverse input end passes through
Resistance R2 is grounded, and comparator U1 reverse input end is also connected by resistance R3 with micro-control unit MCU input/output interface,
Comparator U1 output end is connected with micro-control unit MCU reception signal end.
In embodiments of the present invention, valid data are differentiated by comparing judgement unit, resistance R2, electricity can be passed through
Hinder R3 and amplitude threshold is set, comparator U1 is compared current input value with amplitude threshold, if input value is more than amplitude threshold, compare
High level signal is exported compared with device U1, if input value is less than amplitude threshold, comparator U1 output low level signals, and by output
Low and high level signal is sent to process chip and carries out back-end processing.
Draw it is, of course, also possible to be connected to detection unit 100 as AD sampling units using analog-digital converter with communication interface
Between pin unit 14.
In embodiments of the present invention, by AD sampled sense voltage range values, voltage amplitude value meets or exceeds restriction threshold
During value, sampling unit output high level, when voltage amplitude value is less than threshold value is limited, sampling unit output low level, when AD samples,
Modulation system is not limited to OOK, extracts the waveform of former modulation intelligence, can also use other modulator approaches such as ASK.
The embodiment of the present invention by the front end hardware circuit realiration for the dynamic token built based on discrete device award seed or
Person's production configuration, the program in OTP card without setting contact, it is not necessary to which secondary encapsulation, is that can be achieved only by radio communication,
It is complicated so as to avoid existing OTP card processing step caused by secondary encapsulation, the problem of production life cycle length and high cost.
Fig. 5 is the flowage structure of the method for awarding seed or production configuration of dynamic token provided in an embodiment of the present invention, is
It is easy to explanation, illustrate only part related to the present invention.
The method for awarding seed or production configuration of the dynamic token is based on the dynamic token in the OTP card in above-described embodiment
Front end hardware circuit realiration, comprise the steps：
Step S101, receives seed or production configuration data that read write line is sent；
When the seed or production configuration data that are sent in read write line toward OTP card, read write line provides carrier signal.The read write line
Carrier signal is modulated by ASK (amplitude shift key modulation) or OOK (on-off keying) according to information is sent, certainly, the reading
The equivalent effect of amplitude modulation(PAM) can also be reached indirectly by adjusting carrier frequency, by deviateing the matching frequency of coil by writing device.
It is to be noted that the information sent can be existing standard interface signal, such as UART, IIC, SPI, single wire transmission agreement etc.,
Can also be the signal of the modulation formats such as frequency modulation, the amplitude modulation of customized low speed, the waveform of signal can be square wave, sine
Ripple, triangular wave or waveform customization.
Step S102, seed or production configuration data is filtered by detection unit the carrier signal of modulated signal, obtained
Former modulated signal, and former modulated signal is exported to micro-control unit by communication interface pin units；
Wherein, communication interface pin units include RX pins.Tentative standard interface signal is UART signal, then is drawn by RX
Pin, UART interface are exported to micro-control unit MCU.Due to being handled without the modulated signal to reception, therefore, greatly simplify
Rear end reception processing process, reaches the effect of transparent transmission.
Step S103, informs that completion is awarded to read write line and plants or production configuration.
As a preferred embodiment of the present invention, can also be to seed or production configuration data encryption, specifically, in step
Before S101：The default dynamic encryption password consulted with read write line；
After step slol：In checking seed or production configuration data the dynamic encryption password that carries whether with it is default
Dynamic encryption password is consistent；
If so, then performing step S102；
Institute is no, then does not operate or send miscue.
In embodiments of the present invention, for greater safety, before communicating, dynamic token first carries out unidirectional or two-way with read write line
Certification, certification is by rear, then is communicated.
As a preferred embodiment of the present invention, in step s 103, former modulated signal is passed through into communication interface pin units
Exporting can be specially to the step of micro-control unit：
Step S1031, former modulated signal is exported to rear end matching unit and makes decisions matching；
Step S1032, the signal after matching is exported to micro-control unit by communication interface pin units.
Alternatively, in step S1031, conversion can be made decisions to former modulated signal according to amplitude threshold and realizes judgement
Matching；
Can also be by carrying out AD samplings to former modulated signal, and the voltage amplitude value read according to sampling generates sampled value
Realize judgement matching.
As a preferred embodiment of the present invention, step S103 can be by communication interface pin units directly from microcontroller list
Member, which is obtained, to be completed to award kind or the signal of production configuration sends to read write line and realized：
Step S103 can also directly be awarded from micro-control unit acquisition completion by communication interface pin units and be planted or produce
The signal of configuration, and carry out the backward read write line of load modulation and be sent completely to award kind or the modulated signal of production configuration is realized.
In embodiments of the present invention, the switch in load modulating unit can be controlled by switching signal by micro-control unit
Circuit module is off state, so that the electric current for the near-field communication aerial being made up of near field coil with matching capacitance is less,
When it is non-meet front end B in reception state when, on-off circuit module or switching device are off state, now, near-field communication aerial
Equiva lent impedance is very big, the electric current very little passed through, keeps low power consumpting state, RF energy is hardly consumed, in same circuit board
On when having a variety of near field coils, OTP card also hardly consumes RF energy, it is to avoid other communication coils are influenceed.
As one embodiment of the invention, in card reader one end, the card reader based on card reader to dynamic token award seed or
The method of write-in production configuration includes：
Step S201, is modulated, generation sends information, sends packet to seed or production configuration data by carrier wave
Include：The signal of the modulation format of the frequency modulation or amplitude modulation of standard interface signal or customized low speed；
Step S202, will send information by communication interface pin units and is sent to dynamic token, so that dynamic token is complete
Configured into awarding seed or producing；
Step S203, completions for receiving and demodulating dynamic token transmission is awarded kind or production is configured informs signal.
The embodiment of the present invention by the front end hardware circuit realiration for the dynamic token built based on discrete device award seed or
Person's production configuration, the program in OTP card without setting contact, it is not necessary to which secondary encapsulation, is that can be achieved only by radio communication,
It is complicated so as to avoid existing OTP card processing step caused by secondary encapsulation, the problem of production life cycle length and high cost.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without tackling the embodiment of the present invention constitutes any limit with its function and internal logic
It is fixed.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, without detailed description or note in some embodiment
The part of load, may refer to the associated description of other embodiments.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing reality
Example is applied the present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed
Or replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme, all should
Within protection scope of the present invention.
Claims (14)
1. the front end hardware circuit of a kind of dynamic token, it is characterised in that the circuit is built by discrete device, including：
Near-field communication aerial, detection unit and communication interface pin units；
The near-field communication aerial includes near field coil and matching capacitance, the frequency of the near field coil and the carrier frequency chosen
Matching；
The detection unit, the carrier wave in seed or production configuration data for filtering out reception, obtains former modulated signal, described
The input of detection unit is connected with the near field coil；
The communication interface pin units, for the former modulated signal to be exported to micro-control unit, the communication interface is drawn
Pin unit is connected between the input and output pin of the output end of the detection unit and the micro-control unit.
2. circuit as claimed in claim 1, it is characterised in that the detection unit includes one-way conduction unit and filtering is single
Member；
The one-way conduction unit is diode, triode or metal-oxide-semiconductor；
The filter unit includes：
Resistance R2 and electric capacity C2；
One end of the resistance R2 is connected for the input of the filter unit with the output end of the one-way conduction unit, described
The input of one-way conduction unit is connected with the near field coil, and one end of the resistance R2 is simultaneously the defeated of the filter unit
Go out end to be connected with one end of the electric capacity C2, one end of the electric capacity C2 connects for the output end of the filter unit with described communicate
Mouth pin units connection, the other end of the other end of the resistance R2 and the electric capacity C2 is grounded simultaneously；
Or, the filter unit includes：
Resistance R5, electric capacity C4 and inductance L1；
One end of the electric capacity C4 is connected for the input of the filter unit with the near field coil, and the electric capacity C4's is another
Hold and be connected for the output end of the filter unit with the input of the one-way conduction unit, the output of the one-way conduction unit
End is connected with the communication interface pin units, and the other end of the electric capacity C4 is also grounded by the resistance R5, the inductance
L1 is in parallel with the electric capacity C4.
3. the circuit stated such as claim 1, it is characterised in that the circuit also includes：
Rear end matching unit, for the former modulated signal to be made decisions into matching, and the signal after matching is connect by communication
Mouth pin units are exported to the micro-control unit, and the rear end matching unit is connected to the detection unit and connect with described communicate
Between mouth pin units.
4. circuit as claimed in claim 3, it is characterised in that the rear end matching unit is single to compare judgement unit or AD samplings
Member；
The judgement unit that compares includes：
Comparator and resistance R2, resistance R3；
The positive input of the comparator is connected with the output end of the filter unit, and the reverse input end of the comparator leads to
The resistance R2 ground connection is crossed, the reverse input end of the comparator also passes through the input of the resistance R3 and the micro-control unit
Output interface is connected, and the output end of the comparator is connected with the reception signal end of the micro-control unit；
The AD sampling units are analog-digital converter.
5. circuit as claimed in claim 2, it is characterised in that the circuit also includes：
The load modulating unit, for by controlling the load of near field coil change to carry out load modulation and be sent completely
The modulated signal planted or produce configuration is awarded, the load modulating unit is connected with the detection unit.
6. the circuit stated such as claim 5, it is characterised in that the load modulating unit includes：
On-off circuit module and load control module；
The first end of the load control module is connected with the output end of the one-way conduction unit, the load control module
Second end is connected with the current input terminal of the on-off circuit module, the current output terminal ground connection of the on-off circuit module, institute
The first control end of on-off circuit module, the second control end are stated respectively by communication interface pin units and the micro-control unit
Input/output interface, send signal end connection.
7. a kind of dynamic token, it is characterised in that the dynamic token includes the dynamic order as described in claim any one of 1-6
The front end hardware circuit of board.
8. a kind of card reader, it is characterised in that the front end hardware circuit of the card reader is as described in claim any one of 1-4
Passive near-field communication front end hardware circuit.
9. a kind of OTP near field communication systems, it is characterised in that the system include dynamic token as claimed in claim 7 and
Card reader as claimed in claim 8.
10. a kind of method for awarding seed or production configuration of dynamic token, it is characterised in that methods described is based on such as claim
Dynamic token described in 7, methods described includes：
Receive seed or production configuration data that read write line is sent；
Carrier signal in the seed or production configuration data is filtered by detection unit, former modulated signal is obtained；
The former modulated signal is exported to micro-control unit by communication interface pin units；
Inform that completion is awarded to read write line to plant or production configuration.
11. method as claimed in claim 10, it is characterised in that described that the former modulated signal is passed through into communication interface pin
The step of unit is exported to micro-control unit be specially：
The former modulated signal is exported to rear end matching unit and makes decisions matching；
Signal after matching is exported to micro-control unit by communication interface pin units.
12. method as claimed in claim 11, it is characterised in that made decisions according to amplitude threshold to the former modulated signal
Judgement matching is realized in conversion；Or
By carrying out AD samplings to the former modulated signal, and the voltage amplitude value generation sampled value read according to sampling is realized and sentenced
Certainly match.
13. method as claimed in claim 10, it is characterised in that described to inform that completion is awarded kind or production configuration to read write line
Step is specially：
The former modulated signal is responded in the micro-control unit, produced after response signal, according to the response signal
Control load modulating unit, the load change for controlling the near field coil by the load modulating unit carries out load modulation；
Response signal after modulation is sent to the read write line.
14. a kind of card reader awards the method that seed or write-in produce configuration to dynamic token, it is characterised in that methods described is based on
Card reader as claimed in claim 8, methods described includes：
Seed or production configuration data are modulated by carrier wave, generation sends information, and the transmission information includes：Standard connects
The signal of the modulation format of the frequency modulation or amplitude modulation of message number or customized low speed；
The transmission information is sent to dynamic token by communication interface pin units, so that the dynamic token completes to award kind
Son or production configuration；
Receive and demodulate that completions that the dynamic token sends is awarded kind or production is configured informs signal.
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| CN201710184295.6A CN107094037B (en) | 2017-03-24 | 2017-03-24 | The front end hardware circuit of dynamic token and its method for awarding seed or production configuration |
| PCT/CN2018/080227 WO2018171723A1 (en) | 2017-03-24 | 2018-03-23 | Near field communication front-end hardware circuit, terminal, reader/writer, system and method |
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| CN201710184295.6A CN107094037B (en) | 2017-03-24 | 2017-03-24 | The front end hardware circuit of dynamic token and its method for awarding seed or production configuration |
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Cited By (1)
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| WO2018171723A1 (en) * | 2017-03-24 | 2018-09-27 | 深圳市文鼎创数据科技有限公司 | Near field communication front-end hardware circuit, terminal, reader/writer, system and method |
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| CN105812127A (en) * | 2016-05-24 | 2016-07-27 | 飞天诚信科技股份有限公司 | NFC dynamic token and working method thereof |
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| CN206698220U (en) * | 2017-03-24 | 2017-12-01 | 深圳市文鼎创数据科技有限公司 | The front end hardware circuit and dynamic token of a kind of dynamic token |
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| CN104823204A (en) * | 2012-12-12 | 2015-08-05 | 索尼公司 | Communication device, communication method, integrated circuit, and electronic instrument |
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| CN107094037B (en) | 2019-10-25 |
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