CN102222208B - Controllable CCID (Charge Coupled Imaging Device) card reader and working method thereof - Google Patents
Controllable CCID (Charge Coupled Imaging Device) card reader and working method thereof Download PDFInfo
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- CN102222208B CN102222208B CN201110145214.4A CN201110145214A CN102222208B CN 102222208 B CN102222208 B CN 102222208B CN 201110145214 A CN201110145214 A CN 201110145214A CN 102222208 B CN102222208 B CN 102222208B
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Abstract
The invention provides a controllable CCID (Charge Coupled Imaging Device) card reader and a working method thereof, relating to the field of electronic product equipment. The working method comprises the steps of: receiving information released by a host, judging the types of operation instructions included in the information; carrying out corresponding operations according to the types of the operation instructions by the following specific steps of: if the operation instructions are normal instructions, forwarding data information to a card, waiting for receiving response information of execution success returned by the card; if the operation instructions are special operation instructions, carrying out corresponding special operations, and generating false response information of execution success; if the operation instructions are placeholder instructions, generating false response information of execution success; and returning the response information to the host. The controllable CCID card reader can be connected with the host through a CCID interface without an external power supply, is applicable to all existing software, so that the production and use cost is reduced; and when the power fail of the card happens, the controllable CCID card reader can interact with the host normally, so that the use of the CCID card reader is safe and convenient.
Description
Technical field
The present invention relates to electronic product equipment field, particularly a kind of controlled CCID card reader and method of work thereof.
Background technology
Along with scientific and technological development, each electronic product is as mobile phone, digital camera, MP3, MP4, the function that has extension storage Deng electronic product, extension storage function is mainly by inserting flash card for realizing, as CF card, SD card, MiniSD card, RS-MMC card and mmc card etc.When the data in flash card need to be transferred on computing machine, generally need to connect corresponding electronic product and computing machine by data line, but this mode has problems when reality is used, as flash card dismounting is inconvenient, a kind of electronic product can only correspondingly be used a kind of flash card and a kind of data line, use cost is higher.There is subsequently card reader, by card reader and docking of computing machine, realize the transmission process of data, promoted the convenience using, but the function of existing card reader is all more single, and the data transmission in the situation that of power down suddenly between flash card and computing machine will be interrupted, after card reader need to being pulled up, be again inserted in computing machine and just can re-start data transmission, use inconvenience, security is also lower.
In the product of security fields, the integrality that guarantees data is most important, for guaranteeing the complete of data, each manufacturer has all added power down preventing function in product separately, power down preventing function for test products, many manufacturers have all released the card reader with power down mechanism, but existing these products are all to use serial ports and main frame to carry out information interaction, in actual applications because serial port of host computer is fewer and feweri, the serial-port card reader of different vendor, the protection consciousness of manufacturer, there is no general use interface, manufacturer can only oneself develop PC (personal computer) software, the function class of each software seemingly, using method varies, but there is no versatility, user needs overlapping development, limited use scale, practicality is poor.
Traditional serial-port card reader is serial communication, and specific driving, can only not realize special operation, and such as one-way only operation, main frame issues data, and card reader is without returning, or unidirectional upper the sending out of card reader active.In the interactive system forming at main frame, card reader, three equipment of card, at main frame, directly mutual with card, and card reader is being played the part of the effect of following communication channel between main frame, card, the order of the execution main frame of traditional card reader loyalty, if card reader " unloyal " is carried out the order of main frame, can affect follow-up all operations, main frame can stop sending instruction or constantly sending error correction order to card reader, and security is poor, uses inconvenience.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, a kind of controlled CCID card reader and method of work thereof are provided, it has the advantages that volume is little, cost is low, safe and convenient to use.
Controlled CCID card reader provided by the invention, comprising:
Receiver module, the information issuing for Receiving Host;
Judge module, for judging the type of included operational order in the information of described receiver module, the type of described operational order comprises normal instruction and special operational instruction;
Processing module, for when described main frame issues normal instruction, is transmitted to card by data message, and waits for the response message that the described card of reception returns;
Special operational module, for when described main frame issues special operational instruction, operates described card or card reader accordingly according to the type of described special operational instruction;
Generation module, for generating spurious response information;
Responding module, for returning to main frame by the spurious response information of the response message of described processing module or the generation of described generation module.
Described judge module is also for judging the type of described special operational instruction, and the type of described special operational instruction comprises power down instructions, changes voltage and current-order and special communication power instruction is set.
Described special operational module comprises:
Power down instructions operating unit for power down sign is carried out to set, obtains power down time parameter from described power down instructions;
Change voltage and current-order operating unit, for changing voltage and the electric current of described card reader;
Special communication power instruction operating unit is set, is used to described card reader that special communication power is set.
The type of described special operational instruction also comprises the instruction that powers on, and described special operational module also comprises the command operating unit that powers on for the operation that powers on.
Described normal instruction comprises reset instruction and ordinary instruction.
Described processing module comprises:
Power down performance element, for stopping to described card power supply;
Retransmission unit, sends to card for the data message that described main frame is issued;
Receive response unit, the significant response information of returning for receiving described card;
Judging unit, for judging that described power down identifies whether set, for judging whether to arrive the described power down time, also for judging whether the significant response information in described card is returned;
Power down sign reset unit, for resetting to described power down sign.
The card reader that described controlled CCID card reader is contact or contactless card reader.
The present invention also provides a kind of method of work of controlled CCID card reader, comprising:
Steps A: the information that Receiving Host issues, and judge the type of included operational order in described information;
Step B: operate accordingly according to the type of described operational order, specifically comprise:
If operational order is normal instruction, data message is transmitted to card, wait for the response message of " running succeeded " that the described card of reception returns;
If operational order is special operational instruction, carries out corresponding special operational, and generate the spurious response information of " running succeeded ";
If operational order is occupy-place instruction, generate the spurious response information of " running succeeded ";
Step C: described response message is returned to described main frame.
Described special operational instruction is power down instructions, and described step B is specially: power down sign is carried out to set.
Described step B also comprises: from described power down instructions, obtain power down time parameter.
When carrying out normal instruction and the set of described power down sign, described step B is specially: judge whether to arrive the described power down time, be the power supply that disconnects card, generate the spurious response information of " running succeeded " after waiting for default release time, and described power down sign is resetted; Otherwise judging whether the significant response information in described card is returned, is to receive the significant response information that described card returns, and described power down sign is resetted; Otherwise again judge whether to arrive the described power down time.
When carrying out normal instruction and the set of described power down sign, described step B is specially: judge whether to arrive the described power down time, be to close radio-frequency field, generate the spurious response information of " running succeeded " after waiting for default release time, and described power down sign is resetted; Otherwise judging whether the significant response information in described card is returned, is to receive the significant response information that described card returns, and described power down sign is resetted; Otherwise again judge whether to arrive the described power down time.
The present invention compared with prior art, has the following advantages:
Controlled CCID card reader provided by the invention has perfect driving, can be by current all operations system default and support, while being connected with main frame, adopt CCID interface not take the serial ports of main frame, without external power supply, be applicable to existing all software, save user's overlapping development work, reduce and produce and use cost; Controlled CCID card reader provided by the invention, can be normally mutual with main frame, safe and convenient to use when card power down; Controlled CCID card reader provided by the invention can operate arbitrarily card or card reader, such as special communication speed being set to card reader, the operations such as voltage and current being set.
Accompanying drawing explanation
The block diagram of the controlled CCID card reader that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is the method for work schematic flow sheet of controlled CCID card reader shown in Fig. 1;
The block diagram of the controlled CCID card reader of the power down preventing that Fig. 3 provides for the embodiment of the present invention two;
Fig. 4 is the method for work schematic flow sheet of the controlled CCID card reader shown in Fig. 3;
Fig. 5 is the schematic diagram of the instruction that main frame issues successively while carrying out taking turns complete work of the controlled CCID card reader of contact shown in Fig. 4 and main frame and the transmission block of card in each instruction number.
Embodiment
For a nearlyer step, setting forth the present invention reaches to subscribe technological means and the effect that object is taked, below in conjunction with accompanying drawing and preferred embodiment, to the controlled CCID card reader and the method for work thereof that propose according to invention, its embodiment, structure, feature and effect thereof, illustrate as after.
A kind of controlled CCID card reader that the embodiment of the present invention one provides, as shown in Figure 1, comprising:
Receiver module 1: the information issuing for Receiving Host, described information comprises operational order and data message, described operational order comprises normal instruction and special instruction, described normal instruction comprises ordinary instruction and reset instruction, described special instruction comprises occupy-place instruction and special operational instruction, and special operational instruction is the instruction that card reader or card are operated;
Judge module 2: for judging the type of included operational order and the type of special instruction in the information of described receiver module 1;
Processing module 3: for when described main frame issues normal instruction, data message is transmitted to card, and waits for the response message of " running succeeded " that reception card returns;
Special operational module 4: for when described main frame issues special operational instruction, according to special operational instruction, card or card reader are operated accordingly, comprise: power down instructions operating unit 40 for power down sign is carried out to set, obtains power down time parameter from described power down instructions; The command operating unit 41 that powers on, for the operation that powers on; Change voltage and current-order operating unit 42: for changing voltage and the electric current of card reader; Special communication power instruction operating unit 43 is set: be used to card reader that special communication power is set;
Generation module 5: for generating the spurious response information of " running succeeded ";
Responding module 6: for response message is returned to main frame, make main frame and card can keep normal communication.
As shown in Figure 2, the method for work schematic flow sheet of the controlled CCID card reader providing for the embodiment of the present invention one, comprising:
Step 201: after connecting with main frame, the information that described controlled CCID card reader Receiving Host issues, this information comprises operational order and data message, described operational order comprises normal instruction and special instruction, described normal instruction comprises ordinary instruction and reset instruction, described special instruction comprises occupy-place instruction and special operational instruction, this special operational instruction comprise instruction that card reader is operated as special communication speed instruction is set, change the operational orders such as voltage and current-order and instruction that card is operated as power down instructions etc.;
Step 202: receive the type of included operational order in the information that main frame issues described in judgement, normal instruction, performs step 203 in this way, and special instruction, performs step 204 in this way;
Step 203: data message is transmitted to card, and waits for the response message of " running succeeded " that reception card returns, order performs step 207;
Step 204: judge the type of described special instruction, special operational instruction in this way, performs step 205, and occupy-place instruction in this way performs step 206;
Step 205: according to special operational instruction, card or card reader are operated accordingly, and sequentially perform step 206, specific operation process comprises:
As special operational, instruction is power down instructions, power down sign is carried out to set, obtains power down time parameter from described power down instructions;
As special operational, instruction is to change voltage and current-order, changes the operation of card reader voltage and electric current;
As special operational, instruction is that special communication power instruction is set, and carries out arranging the operation of special communication power to card reader.
Step 206: generate the spurious response information of " running succeeded ", order performs step 207;
Step 207: response message is returned to main frame, make main frame and card can keep normal communication, then circulation step 201.
The controlled CCID card reader that the embodiment of the present invention two provides is contact card reader, the special operational instruction of take is example as card being carried out to the instruction of power-down operation, the course of work to controlled CCID card reader provided by the invention is described in detail, as shown in Figure 3 and Figure 4.Two instructions that the controlled CCID card reader Receiving Host of the contact that the present embodiment provides sends, and be not all transmitted to card, make to return to previous status after twice of the transmission block number upset of main frame, and the transmission block of card number does not overturn, the transmission block number of itself and main frame is consistent, guarantees the normal communication of main frame and card.Concrete grammar is: two instructions that Receiving Host sends are to card reader, article one, be occupy-place instruction, another is power down instructions, at main frame, issue after occupy-place instruction, the transmission block of main frame number can change once (as become 1 from 0), card reader receives after transmission block number, card is not carried out to any operation, but to main frame, return to the response message of " running succeeded ", make main frame can continue under normal to send instructions, main frame receives after the response message of " running succeeded " that card reader returns, start again to transmit power down instructions, the transmission block of main frame number changes and once (from 1, becomes 0) again, return to virgin state, and card reader is retained down power down instructions and processes, and return to the response message that main frame " runs succeeded ", make main frame can normally issue subsequent instructions, when main frame sends next normal instruction again, the transmission block of main frame number changes and once (from 0, becomes 1) again, when card reader receives the ordinary instruction that main frame issues, card reader can be carried out power-down operation to card according to preserving " power down " instruction, and receive the response of returning of card, the transmission block of card number also changes, from 0, become 1, keep the transmission block number consistent state with main frame, make main frame and card can normally carry out communication.This occupy-place instruction is just in order to recover the state of link, the transmission block of main frame number recovers ortho states through twice upset like this, main frame thinks that the transmission block of card is number also through twice upset, when main frame sends ordinary instruction again, the transmission block of card number can change the state that is consistent with the transmission block number of main frame simultaneously, and communication below can normally be carried out.
The block diagram of the controlled CCID card reader that Fig. 3 provides for the embodiment of the present invention two, the function that it has power down preventing, specifically comprises:
Receive information module 31: the information issuing for Receiving Host, described information comprises data message and operational order; Described operational order comprises normal instruction and special instruction, and described normal instruction comprises ordinary instruction and reset instruction, and described special instruction comprises occupy-place instruction and special operational instruction, and special operational instruction is the instruction that card reader or card are operated;
Judge module 32: comprise the first judging unit 321 and the second judging unit 322, described the first judging unit 321 is for judging the operational order type in the information of described reception information module 31, and described the second judging unit 322 is for judging the special instruction type of described reception information module 31;
Power-down operation module 33: for power down sign is carried out to set, and obtain power down time parameter from described power down instructions;
Generate respond module 34: for generating the spurious response information of " running succeeded ";
Normal process module 35: operate accordingly for the normal instruction issuing according to main frame, comprising:
Retransmission unit 350: send to card for the data message that main frame is issued;
Receive response unit 351: the significant response information of returning for receiving card;
Judging unit 352: for judging that power down identifies whether set, for judging whether to arrive the described power down time, also for judging whether the significant response information in card is returned;
Power down performance element 353: for stopping to card power supply, and wait for;
Power down sign reset unit 354: for described power down sign is resetted;
Return to respond module 36: for return to the response message of " running succeeded " to main frame.
When main frame issues special operational instruction, because special operational instruction and occupy-place instruction occur in pairs, the transmission block of main frame number can be through even number time upset, then revert to again initial transmission block number, but the special instruction that card reader issues main frame and occupy-place instruction process privately, be not transmitted to card, the transmission block of card number can not change yet, keep original state, be consistent with the transmission block number of main frame all the time, communication below can normally be carried out.
As shown in Figure 4, the method for work schematic flow sheet for the controlled CCID card reader of the contact shown in Fig. 3, comprises course of normal operation and power down process, and its specific works process comprises:
Step 401: after contact CCID card reader and main frame connect, the information that Receiving Host sends, this information comprises data message and operation instruction information; Described operational order comprises normal instruction and special instruction, described special instruction comprises occupy-place instruction and special operational instruction, described special operational instruction is power down instructions, described occupy-place instruction can be made as fe fd 00 00 00, and power down instructions can be made as fe 00 power down time high byte power down time low byte 00;
Step 402: the instruction type that judgement main frame issues, special instruction, performs step 403 in this way, and normal instruction, performs step 406 in this way;
Step 403: judge the type of described special instruction, power down instructions instruction in this way, performs step 404, and occupy-place instruction in this way performs step 405;
Step 404: power down sign is carried out to set, obtain power down time parameter from described power down instructions, described power down time parameter can be set to 16 milliseconds, and order performs step 405;
Step 405: generate the spurious response information of " running succeeded ", order performs step 416;
Step 406: described data message is sent to card;
Step 407: judging that described power down identifies whether set, is to perform step 409, otherwise execution step 408;
Step 408: wait for the significant response information that card returns that receives;
Step 409: judging whether to arrive the described power down time, is to perform step 410, otherwise execution step 413;
Step 410: disconnect the power supply of card, stop powering to card;
Step 411: card reader without any operation, is waited for default release time in idle condition, order performs step 412, is set to 30 milliseconds the release time in the present embodiment, guarantees that card successfully executes ongoing operation;
Step 412: generate the spurious response information of " running succeeded ", order performs step 415;
Step 413: judge whether the significant response information in card is returned, and is to perform step 414, otherwise execution step 409;
Step 414: receive the significant response information that card returns, order performs step 415;
Step 415: described power down sign is resetted;
Step 416: described response message is sent to main frame, then re-execute step 401, keep follow-up normal communication.
In Fig. 4 in step 405, when main frame sends power down instructions to CCID card reader, CCID card reader does not send to card by power down instructions, held back this instruction, and generate the spurious response information of " running succeeded " and send to main frame, allow main frame continue normally to send next instruction, and when next ordinary instruction arrival and the set of power down sign, card reader is carried out power-down operation to card.As shown in Figure 5, while carrying out taking turns complete work for contact CCID card reader, receive successively the schematic diagram of instruction that main frame issues and main frame and the transmission block of card in each instruction number, the instruction sequences that main frame issues is followed successively by: ordinary instruction, occupy-place instruction, power down instructions, carry out power down instructions, reset instruction, ordinary instruction, occupy-place instruction, change voltage and current-order, ordinary instruction, occupy-place instruction, the cyclic process of special communication power instruction, ordinary instruction is set, the ordinary instruction in this Fig. 5 can have some; In Fig. 5, can find out, when main frame often issues an instruction, its transmission block number all can change, and card reader, when receiving ordinary instruction, can be transmitted to card, and now the transmission block of card number also can be ensued change; But when card reader receives the occupy-place instruction that main frame issues, power down instructions, change voltage and current-order and special communication power instruction is set, can not be transmitted to card, the transmission block of card number can not change yet, but due to power down instructions, change voltage and current-order, special communication power instruction is set all occurs in pairs with occupy-place instruction, main frame sends two instructions continuously, its transmission block is number also the same with virgin state after twice change, make the transmission block number of card remain consistent with the transmission block number of main frame, can carry out normal communication.Described reset instruction is used for realizing re-establishing between card and main frame and is connected and carries out normal communication, also available occupy-place instruction and two continual commands that occur in pairs of instruction that power on replace realizing the normal communication of card and main frame, the described instruction that powers on can be made as fe fe 00 0000, and occupy-place instruction can be made as fe fd00 00 00.
The method of work of the controlled CCID card reader that the embodiment of the present invention two provides is also applicable in contactless communication, in non-contact communication, card does not contact with card reader, but from the radio-frequency field of card reader, directly obtain the energy news that work of going forward side by side, for non-contact card, the step 410 of controlled CCID card reader method of work shown in Fig. 4 and step 411 available step 410 ' and step 411 ' replace;
Step 410 ': close radio-frequency field, stop the power supply to non-contact card, the energy source of non-contact card disappears, in noenergy state;
Step 411 ': after closing radio-frequency field, controlled CCID card reader is waited for default release time, with the thorough disconnection of power supply of assurance card and in steady state (SS), the energy retention time of different cards is different, but the time is all quite short, in the present embodiment, be set to 30 milliseconds the release time of controlled CCID card reader.
After the real power down of non-contact card (after being controlled CCID card reader powered-down), controlled CCID card reader can receive the occupy-place instruction that main frame issues and the APDU instruction or receive the reset instruction that main frame issues of powering on, the radio-frequency field that reopens controlled CCID card reader restores electricity to card, in described APDU instruction, includes repositioning information.The order that controlled CCID receives instruction is the instruction-ordinary instruction (carrying out instruction) of the instruction-ordinary instruction (carrying out instruction) of occupy-place instruction-card reader is operated or occupy-place instruction-card is operated, occupy-place instruction has guaranteed that the transmission block number of main frame remains consistent with the transmission block number of card, can carry out normal communication.
Controlled CCID card reader provided by the invention has perfect driving, can be by current all operations system default and support, while being connected with main frame, adopt CCID interface not take the serial ports of main frame, without external power supply, be applicable to existing all software, save user's overlapping development work, reduce and produce and use cost; Controlled CCID card reader provided by the invention, can be normally mutual with main frame, safe and convenient to use when card power down; Controlled CCID card reader provided by the invention can operate arbitrarily card or card reader, such as special communication speed being set to card reader, the operations such as voltage and current being set.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in technical scope disclosed by the invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. a controlled CCID card reader, is characterized in that, comprising:
Receiver module, the information issuing for Receiving Host;
Judge module, for judging the type of included operational order in the information of described receiver module, described operational order comprises normal instruction and special instruction, described normal instruction comprises reset instruction and ordinary instruction; Described judge module is also for judging the type of described special instruction, and described special instruction comprises special operational instruction and the occupy-place instruction occurring in pairs with described special operational instruction, and described special operational instruction comprises power down instructions;
Processing module, for when described main frame issues normal instruction, the data message that described main frame is issued is transmitted to card, and waits for the response message that the described card of reception returns; Comprise:
Power down performance element, stops during the time to described card power supply for issuing normal instruction and judging unit judgement power down sign set when described main frame and arriving power down;
Retransmission unit, sends to card for the data message that described main frame is issued;
Receive response unit, the significant response information of returning for receiving described card;
Described judging unit, for judging that described power down identifies whether set, for judging whether to arrive the described power down time, also for judging whether the significant response information in described card is returned;
Power down sign reset unit, for resetting to described power down sign;
Special operational module, for when described main frame issues special operational instruction, according to the type of described special operational instruction, described card or card reader are operated accordingly, now energy normal communication between described main frame and described card reader, described card reader and card; Described special operational module comprises:
Power down instructions operating unit for when described main frame issues power down instructions, power down sign being carried out to set, obtains power down time parameter from described power down instructions;
Generation module, judges that for issue special instruction and described judging unit when described main frame arriving power down generates spurious response information during the time;
Responding module, for the spurious response information of the response message of described processing module or the generation of described generation module is returned to main frame, described main frame continues to photos and sending messages under described card reader after receiving response message normally, and described receiver module is started working.
2. controlled CCID card reader according to claim 1, is characterized in that, the type of described special operational instruction also comprises: change voltage and current-order and special communication power instruction is set, described special operational module also comprises:
Change voltage and current-order operating unit, for changing voltage and the electric current of described card reader;
Special communication power instruction operating unit is set, is used to described card reader that special communication power is set.
3. controlled CCID card reader according to claim 2, is characterized in that, the type of described special operational instruction also comprises the instruction that powers on, and described special operational module also comprises the command operating unit that powers on for the operation that powers on.
4. according to the controlled CCID card reader described in claim 1-3 any one, it is characterized in that the card reader that described controlled CCID card reader is contact or contactless card reader.
5. a method of work for controlled CCID card reader, is characterized in that, comprising:
Steps A: the information that Receiving Host issues, and judge the type of included operational order in described information;
Step B: operate accordingly according to the type of described operational order, specifically comprise:
If operational order is the set of normal instruction and power down sign, judge whether to arrive the described power down time, be card to be carried out to power down, generate the spurious response information of " running succeeded " after waiting for default release time, and described power down sign is resetted; Otherwise judging whether the significant response information in described card is returned, is to receive the significant response information that described card returns, and described power down sign is resetted; Otherwise again judge whether to arrive the described power down time;
If operational order is power down instructions, from described power down instructions, obtain the power down time, power down sign is carried out to set, and generate the spurious response information of " running succeeded ";
If operational order is occupy-place instruction, generate the spurious response information of " running succeeded ";
Step C: described response message is returned to described main frame, return to steps A.
6. the method for work of controlled CCID card reader according to claim 5, is characterized in that, card is carried out to power down and be specially: the power supply that disconnects card.
7. the method for work of controlled CCID card reader according to claim 5, is characterized in that, card is carried out to power down and be specially: close radio-frequency field.
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| CN201110145214.4A CN102222208B (en) | 2011-05-31 | 2011-05-31 | Controllable CCID (Charge Coupled Imaging Device) card reader and working method thereof |
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| CN102801582B (en) * | 2012-07-20 | 2015-05-27 | 飞天诚信科技股份有限公司 | Device and method for realizing automatic power failure of USB (Universal Serial Bus) device |
| CN110336592B (en) | 2019-06-28 | 2021-03-16 | 飞天诚信科技股份有限公司 | Data transmission method suitable for Bluetooth card reader, electronic equipment and storage medium |
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| JP2002062956A (en) * | 2000-08-21 | 2002-02-28 | Sankyo Seiki Mfg Co Ltd | Service interruption processing method and service interruption processing device |
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|---|---|---|---|---|
| JP2002182798A (en) * | 2000-12-14 | 2002-06-26 | Toshiba Corp | Terminal device |
| CN1920848A (en) * | 2006-09-19 | 2007-02-28 | 北京飞天诚信科技有限公司 | Method and device for information interaction between host and smart card |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102222208A (en) | 2011-10-19 |
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