CN106229767A - A kind of adapter, card machine communication system and method - Google Patents
A kind of adapter, card machine communication system and method Download PDFInfo
- Publication number
- CN106229767A CN106229767A CN201610797283.6A CN201610797283A CN106229767A CN 106229767 A CN106229767 A CN 106229767A CN 201610797283 A CN201610797283 A CN 201610797283A CN 106229767 A CN106229767 A CN 106229767A
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- Prior art keywords
- card
- adapter
- contact
- main control
- control chip
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Credit Cards Or The Like (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses a kind of adapter, card machine communication system and method, described adapter includes main control chip and for the Card Reader contact being connected with the IC-card contact of IC-card, described main control chip is provided with the first communication interface and USB interface, and described first communication interface is connected with Card Reader contact；Described adapter also includes that described card detection structure is connected with the GPIO pin of main control chip for making main control chip judge, according to level change, the card detection structure whether Card Reader contact is connected with IC-card contact；Described first communication interface is SPI interface and/or UART interface.Use adapter provided by the present invention, card machine communication system and method, can effectively solve in existing interconnecting device, after IC-card is extracted, still in the problem of main equipment end display IC-card relevant information, be effectively increased Consumer's Experience.
Description
Technical field
The present invention relates to IC-card communication technical field, be specifically related to a kind of adapter, card machine communication system and method.
Background technology
Along with developing rapidly of electronic communication, the function of intellective IC card also gets more and more, owing to intelligence outward appearance is similar to
Ordinary financial IC-card, can be placed in wallet or pocket, is convenient for carrying, and the user of intellective IC card also gets more and more.
In order to meet the needs of network bank business, it is possible to the IC-card realizing Net silver KEY function has occurred, such as, cassette
Bluetooth equipment, its outward appearance is similar to equally and financial IC card, includes safety chip, bluetooth module, liquid crystal display, power supply mould
Block and user key-press etc., user can be realized the communication of bluetooth card-type device and PC, complete USB piece by USB patchcord
Act process, completes the functions such as network bank business.But in actual use, some user habit complete transaction after do not extract
The USB patchcord that PC end inserts, the card apparatus information having enumerated out still can be shown setting at PC end by PC end
In standby list or Net silver client still can show card apparatus information, and now tabulating equipment has been extracted, and this causes with real
Border situation does not meets, and affects Consumer's Experience.
Summary of the invention
For drawbacks described above present in prior art and the needs of actual application, it is an object of the invention to provide one
Adapter, card machine communication system and method, can be greatly improved the body of user by this adapter, card machine communication system and method
Test.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of adapter, including main control chip with for the Card Reader contact being connected with the IC-card contact of IC-card, described master control
Chip is provided with the first communication interface and USB interface, and described first communication interface is connected with Card Reader contact；Described adapter also wraps
Include for making main control chip judge, according to level change, the card detection structure whether Card Reader contact is connected with IC-card contact, described
Card detection structure is connected with the GPIO pin of main control chip；Described first communication interface is SPI interface and/or UART interface.
Further, adapter as above, described card detection structure includes first be connected with described GPIO pin
Conductive structure, described first conductive structure is connected with pull-up power interface by pull-up resistor, and described IC-card is provided with second and leads
Electricity structure, the second conductive structure is connected with the ground of the pcb board of IC-card, and when IC-card contact is connected with described Card Reader contact, first leads
Electricity structure is connected with the second conductive structure.
Further, adapter as above, described first conductive structure is the first contact, and described second conductive structure is
Second contact；Or, described first conductive structure is the first conducting magnetic iron, and the second conductive structure is the first iron plate.
Further, adapter as above, described card detection structure include the second conducting magnetic iron and with GPIO pin
The 3rd conducting magnetic iron connected, described 3rd conducting magnetic iron is connected by the second pull-up resistor and the second pull-up power interface；Institute
State IC-card and be provided with the second iron plate and the 3rd iron plate of electrical connection, when IC-card contact is connected with described Card Reader contact, the second conduction
Magnet and the second iron plate connect, and the 3rd conducting magnetic iron and the 3rd iron plate connect；Described second pull-up power interface is USB interface
Power interface or the power interface of main control chip.
Further, adapter as above, the shape of described second conducting magnetic iron and the 3rd conducting magnetic iron is different.
Further, adapter as above, described USB interface is connected with PC.
Present invention also offers a kind of card machine communication system, including IC-card and PC, also include described adapter, adapter
The first communication interface be connected with the IC-card contact of described IC-card by Card Reader contact, USB interface is connected with PC.
Present invention also offers a kind of card machine communication means, comprise the following steps:
The USB interface of adapter is connected with PC；
The main control chip of adapter judges whether its Card Reader contact is connected with IC-card, the most then main control chip controls its USB
Correction data line D+ pull-up enable triggering PC and the IC-card of interface complete the USB enumeration process of IC-card by adapter.
Further, a kind of machine cartoon letters method as above, whether the main control chip of adapter judges its Card Reader contact
The mode being connected with IC-card is:
Main control chip sends setting command information by the first communication interface and Card Reader, judges whether to connect within the setting time
Receive the response message corresponding with described setting command information, the most then Card Reader contact is connected with IC-card, if it is not, be then not connected with.
Further, a kind of machine cartoon letters method as above, whether the main control chip of adapter judges its Card Reader contact
The mode being connected with IC-card is:
Main control chip monitors the voltage of its card detection structure, if voltage is high voltage, then Card Reader contact is with IC-card position even
Connecing, if voltage is low-voltage, then Card Reader contact is connected with IC-card；Described high voltage is relative high voltage and low electricity with low-voltage
Pressure.
The beneficial effects of the present invention is: adapter provided by the present invention, card machine communication system and method, make at IC-card
For from equipment by adapter and usb communication main equipment time, adapter first pass through and judge that IC-card has connected and touch
Send out whether usb communication main equipment carries out USB enumeration with IC-card communication, only just can trigger when IC-card has been coupled to adapter
Enumeration process, can effectively solve in existing interconnecting device, after IC-card is extracted, still shows IC-card relevant information at main equipment end
Problem, be effectively increased Consumer's Experience.
Accompanying drawing explanation
The structural representation of the Fig. 1 a kind of adapter for providing in the specific embodiment of the invention；
Fig. 2 is a kind of structural representation of card detection structure in the specific embodiment of the invention；
Fig. 3 is the part-structure schematic diagram of the IC-card corresponding with card detection structure in Fig. 2；
Fig. 4 is a kind of structural representation of the first conductive structure in the specific embodiment of the invention；
Fig. 5 is a kind of structural representation of second conductive structure corresponding with the first conductive structure in Fig. 4；
Fig. 6 be in the specific embodiment of the invention the first conductive structure separately plant structural representation；
Fig. 7 is a kind of structural representation of second conductive structure corresponding with the first conductive structure in Fig. 6；
Fig. 8 is the another kind of structural representation of card detection structure in the specific embodiment of the invention；
Fig. 9 is the part-structure schematic diagram of the IC-card corresponding with card detection structure in Fig. 8；
Figure 10 is the structural representation of a kind of card machine communication system in the specific embodiment of the invention.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in further detail with detailed description of the invention.
Fig. 1 shows the structural representation of a kind of adapter provided in the specific embodiment of the invention, by permissible in figure
Finding out, this adapter includes main control chip MCU 10 and for the Card Reader contact 20 being connected with the IC-card contact of IC-card 40, described
On main control chip, 10 are provided with the first communication interface 11 and usb 12, and described first communication interface 11 is connected with Card Reader contact 20；
Described adapter also includes for making main control chip 10 judge whether Card Reader contact 20 is connected with IC-card contact according to level change
Card detection structure 30, described card detection structure 30 be connected with the universal input/output GPIO pin 13 of main control chip 10.
In present embodiment, described first communication interface 11 include but not limited to SPI interface and/or UART interface and/or
IIC interface and/or SWD interface, it is contemplated that the stability of communication, it may be preferred to SPI interface.For different communication interface shapes
Formula, due to can be with common contact under different communication mode, described Card Reader contact 20 can have only to six contacts, such as institute in Fig. 1
～6. 1., each contact function under different communication mode can carry out self-defined as required in the contact shown.
In present embodiment, Card Reader contact 20 includes but not limited to Magnetic suction thread form or card with the connected mode of IC-card contact
The grafting form of A seating band shell fragment.IC-card 40 includes the card-type device with IC-card contact of multi-form, such as, has bluetooth
The cassette bluetooth equipment of main control chip and safety chip and the financial IC card of other form.
Adapter described in present embodiment, whether its main control chip 10 is realized by IC-card by card detection structure 30
The judgement accessed, uses this adapter, when USB main equipment (such as PC) is connected with adapter by usb communication mode, and switching
Device can trigger whether main equipment carries out the process of USB enumeration, i.e. by judging whether by as from the IC-card access of equipment
When adapter judges have IC-card to access, just trigger USB enumeration process, thus solve when communication completes, from equipment with
Adapter disconnects but card apparatus information still shows at main equipment end time adapter and main equipment do not disconnect problem.
Fig. 2 shows the structural representation of the detection structure 30 of card described in one embodiment of the invention, and Fig. 3 shows and schemes
The part-structure schematic diagram of the IC-card of detection structure 31 correspondence of card described in 2, in this embodiment, described card detection structure 30
Including the first conductive structure 31 being connected with described GPIO pin 13, described first conductive structure 31 is by the first pull-up resistor 32
Being connected with the first pull-up power interface 33, now, described IC-card 40 is provided with the second conductive structure 41, the second conductive structure 41 with
The ground 42 of the pcb board of IC-card 40 connects, and when IC-card contact is connected with described Card Reader contact 20, the first conductive structure 31 is led with second
Electricity structure 41 connects；Described first pull-up power interface 33 is power interface or the main control chip 10 of the usb 12 of adapter
Power interface.
Wherein, the concrete form of described first conductive structure 31 can be configured, according to actual needs such as Fig. 4 and Fig. 6
For the structural representation of two kind of first conductive structure 31 provided in present embodiment, Fig. 5 and Fig. 7 be respectively with Fig. 4 and Fig. 6
In the schematic diagram of the second conductive structure corresponding to the first conductive structure.In Fig. 4, described first conductive structure 31 can be first touch
Point 311, corresponding, described second conductive structure 41 of IC-card 40 is the second contact 411, as shown in Figure 5；In Fig. 6, described first
Conductive structure 31 is the first conducting magnetic iron 312, corresponding, the second conductive structure 41 is the first iron plate 412, as shown in Figure 7.
From described above, adapter is when communicating with IC-card, and Card Reader contact 20 has only to six can meet requirement,
Therefore, for shown in Fig. 2 and Fig. 4 use contact as the scheme of the first conductive structure, can be directly to reserve on IC-card
One of them contact as the second contact 411, corresponding on adapter the first contact 311 is set.Described first conduction
The shape of Magnet 312 and the first iron plate 412 includes but not limited to ellipse, circle, square or semicircle etc..
Use the card detection structure 30 shown in Fig. 2, when IC-card 40 is not connected, the first conductive structure 31 with adapter
Being in high level, when IC-card 40 is connected with adapter, the first conductive structure 32 is in low level, and therefore, main control chip 10 can
Being the judgement that high level or low level realize whether accessing IC by its GPIO pin 13.
It should be noted that described high level is relative low and high level with low level, low level ground connection is theoretically 0,
High level is determined by the magnitude of voltage of the first pull-up power interface 33.
Fig. 8 shows the structural representation of the detection structure 30 of card described in another embodiment of the present invention, and Fig. 9 is and Fig. 8
Described in the part-structure schematic diagram of IC-card of card detection structure 30 correspondence, in this embodiment, described card detection structure 30
Including the second conducting magnetic iron 34 and the 3rd conducting magnetic iron 35 that is connected with GPIO pin 13, described 3rd conducting magnetic iron 34 is by the
Two pull-up resistors 36 are connected with the second pull-up power interface 37, and now, described IC-card 40 is provided with the second iron plate 42 of electrical connection
With the 3rd iron plate 43, when IC-card contact is connected with described Card Reader contact 20, the second conducting magnetic iron 34 is connected with the second iron plate 42, the
Three conducting magnetic irons 35 are connected with the 3rd iron plate 43；Described second pull-up power interface 37 is power interface or the master of usb 12
The power interface of control chip 10.
In actual applications, in order to avoid obscuring of the second conducting magnetic iron 34 and the 3rd conducting magnetic iron 35, the second conductive magnetism
Ferrum 42 and the 3rd conducting magnetic iron 43 can select different shapes.What the second iron plate 42 and the 3rd iron plate 43 electrically connected implements
The two ends of this paster for example, it may be directly use an iron plate, can be connected respectively to the second ferrum by structure in different ways
On sheet 42 and the 3rd iron plate 43, naturally it is also possible to directly the second iron plate 42 and the 3rd iron plate 43 are made the overall knot of a UNICOM
Structure.
Use the card detection structure 30 shown in Fig. 8, when IC-card 40 is not connected, the 3rd conducting magnetic iron 35 with adapter
Being in high level, when IC-card 40 is connected with adapter, the second conducting magnetic iron 34 connects with the 3rd conducting magnetic iron 35, the 3rd conduction
Magnet 35 is in low level, therefore, main control chip 10 can be high level by its GPIO pin 13 or low level realize right
The judgement whether IC accesses.
Same, described high level is relative low and high level with low level, and low level ground connection is theoretically 0, high level
Determined by the magnitude of voltage of the second pull-up power interface 37.
In present embodiment, described first iron plate, the second iron plate, the 3rd iron plate are antioxidation iron plate, prevent exposed
Air in get rusty.
It should be noted that in Fig. 4-Fig. 9, the pattern of card detection structure 30 is not unique in present embodiment, example
As, position is set can select as required for the first conducting magnetic iron 312 shown in Fig. 6 and Fig. 7 and the first iron plate 412
Select, as long as ensureing when adapter is connected with IC, on the premise of Card Reader contact and IC-card contact connect one to one, the first conduction
Magnet 312 can corresponding connect with the first iron plate 412.
Present invention also offers a kind of machine cartoon letters system, as shown in Figure 10, this communication system includes IC-card 40 and PC
50, also include described adapter, the first communication interface 11 of adapter is touched by the IC-card of Card Reader contact 20 with described IC-card 40
Point connects, and usb 10 is connected with PC 50.
In described communication system, adapter is responsible for connecting described IC-card and PC, and the connection with adapter is responsible for by PC, when
The when that IC-card being connected on adapter, effect one is that PC carries out data interaction by adapter and IC-card, and two is to pass through USB
Interface can provide the USB voltage of 5V for adapter.
Based on described card base communication system, present invention also offers a kind of card machine communication means, the method includes following
Step:
The USB interface of adapter is connected with PC；
The main control chip of adapter judges whether its Card Reader contact is connected with IC-card, the most then main control chip controls its USB
Correction data line D+ pull-up enable triggering PC and the IC-card of interface complete the USB enumeration process of IC-card by adapter.
In present embodiment, the main control chip of adapter judges a kind of mode whether its Card Reader contact is connected with IC-card
For:
Main control chip sends setting command information by the first communication interface and Card Reader, judges whether to connect within the setting time
Receive the response message corresponding with described setting command information, the most then Card Reader contact is connected with IC-card, if it is not, be then not connected with.
The main control chip of adapter judges that the another way whether its Card Reader contact is connected with IC-card is:
Main control chip monitors the voltage of its card detection structure, if voltage is high voltage, then Card Reader contact is with IC-card position even
Connecing, if voltage is low-voltage, then Card Reader contact is connected with IC-card；Described high voltage is relative high voltage and low electricity with low-voltage
Pressure.
Above-mentioned card machine communication means provided in present embodiment, adapter is by judging that IC-card is the most with it the most even
Connect, trigger whether PC carries out USB enumeration process, concrete, when adapter judges that IC-card is connected with adapter, its
Main control chip is enabled, so that having one on the USB_D+ of the USB interface of PC end by the USB_D+ pull-up of controller USB interface
Individual high level, PC end has then been taken as equipment and has inserted, and triggers PC and carries out data interaction by adapter and IC-card, completes
The enumeration process of USB interface.This card machine communication means in the present embodiment, owing to USB enumeration process is to be triggered by adapter
Completing, access without IC-card or IC-card is extracted, adapter just will not trigger enumeration process, and PC end just will not show
Show the information in relevant IC-card, therefore, even if user is after completing communication process, IC-card is extracted and disconnects from adapter
But not extracted from PC by adapter, PC end also will not continue to show the information in IC-card.
For different types of IC-card, the enumerations information that USB enumeration process shows at PC end is the most different, such as,
For Net silver IC-card, when USB enumeration, PC read from IC-card except IC-card facility information (device name, software version number
The information that can identify Deng PC, is used for guiding distinct program) outward, the built-in Flash that will also include the MCU from card stores
The Net silver client installation kit of each bank read in module or external Flash memory module and/or the Net silver visitor of each bank
Family end installation kit downloads web page index information etc..
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technology thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an adapter, it is characterised in that: include main control chip (10) and for being connected with the IC-card contact of IC-card (40)
Card Reader contact (20), described main control chip (10) is provided with the first communication interface (11) and USB interface (12), described first communication
Interface (11) is connected with Card Reader contact (20)；Described adapter also includes for making main control chip (10) judge according to level change
Card detection structure (30) whether Card Reader contact (20) is connected with IC-card contact, described card detection structure (30) and master control core
The GPIO pin (13) of sheet (10) connects.
A kind of adapter the most according to claim 1, it is characterised in that: described card detection structure (30) includes with described
The first conductive structure (31) that GPIO pin (13) connects, described first conductive structure (31) is by pull-up resistor (32) and pull-up
Power interface (33) connects, and described IC-card is provided with the pcb board of the second conductive structure (41), the second conductive structure (41) and IC-card
(42) ground connects, when IC-card contact is connected with described Card Reader contact (20), and the first conductive structure (31) and the second conductive structure
(41) connect；Described pull-up power interface (33) is power interface or the power interface of main control chip (10) of USB interface (12).
A kind of adapter the most according to claim 2, it is characterised in that: described first conductive structure (31) is the first contact
(311), described second conductive structure (41) is the second contact (411)；Or, described first conductive structure (31) is the first conduction
Magnet (312), the second conductive structure (41) is the first iron plate (412).
A kind of adapter the most according to claim 1, it is characterised in that: described card detection structure (30) includes that second leads
Electric magnet (34) and the 3rd conducting magnetic iron (35) being connected with GPIO pin (13), described 3rd conducting magnetic iron (35) passes through second
Pull-up resistor (36) is connected with the second pull-up power interface (37)；Described IC-card (40) is provided with second iron plate (42) of electrical connection
With the 3rd iron plate (43), when IC-card contact is connected with described Card Reader contact (20), the second conducting magnetic iron (34) and the second iron plate
(42) connecting, the 3rd conducting magnetic iron (35) is connected with the 3rd iron plate (43)；Described second pull-up power interface (37) is USB interface
(12) power interface or the power interface of main control chip (10).
A kind of adapter the most according to claim 4, it is characterised in that: described second conducting magnetic iron (34) and the 3rd conduction
The shape of Magnet (35) is different.
6. according to a kind of adapter one of claim 1 to 5 Suo Shu, it is characterised in that: described USB interface (12) is with PC even
Connect.
7. a kind of card machine communication system based on the adapter one of claim 1 to 6 Suo Shu, including IC-card (40) and PC
(50), it is characterised in that: also including described adapter, first communication interface (11) of adapter passes through Card Reader contact (20) and institute
The IC-card contact stating IC-card (40) connects, and USB interface (12) is connected with PC (50).
8. a kind of card machine communication means based on the card machine communication system described in claim 7, comprises the following steps:
The USB interface of adapter is connected with PC；
The main control chip of adapter judges whether its Card Reader contact is connected with IC-card, the most then main control chip controls its USB interface
Correction data line D+ pull-up enable and trigger PC and IC-card and completed the USB enumeration process of IC-card by adapter.
A kind of card machine communication means the most according to claim 8, it is characterised in that: the main control chip of adapter judges that it is read
The mode whether card contact is connected with IC-card is:
Main control chip sends setting command information by the first communication interface and Card Reader, judges whether to receive within the setting time
The response message corresponding with described setting command information, the most then Card Reader contact is connected with IC-card, if it is not, be then not connected with.
A kind of machine cartoon letters method the most according to claim 8, it is characterised in that: the main control chip of adapter judges it
The mode whether Card Reader contact is connected with IC-card is:
Main control chip monitors the voltage of its card detection structure, if voltage is high voltage, then Card Reader contact is connected with IC-card position, if
Voltage is low-voltage, then Card Reader contact is connected with IC-card；Described high voltage is relative high voltage and low-voltage with low-voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797283.6A CN106229767B (en) | 2016-08-31 | 2016-08-31 | A kind of adapter, card machine communication system and method |
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| CN201610797283.6A CN106229767B (en) | 2016-08-31 | 2016-08-31 | A kind of adapter, card machine communication system and method |
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| CN106229767A true CN106229767A (en) | 2016-12-14 |
| CN106229767B CN106229767B (en) | 2018-09-04 |
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| CN205354045U (en) * | 2015-12-29 | 2016-06-29 | 北京握奇智能科技有限公司 | Card -reading device |
| CN206041170U (en) * | 2016-08-31 | 2017-03-22 | 北京握奇智能科技有限公司 | Adapter and quick -witted communication system of card |
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