CN102254137A - Dual-interface smart card and data communication method thereof - Google Patents
Dual-interface smart card and data communication method thereof Download PDFInfo
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- CN102254137A CN102254137A CN2011101995386A CN201110199538A CN102254137A CN 102254137 A CN102254137 A CN 102254137A CN 2011101995386 A CN2011101995386 A CN 2011101995386A CN 201110199538 A CN201110199538 A CN 201110199538A CN 102254137 A CN102254137 A CN 102254137A
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Abstract
The embodiment of the invention discloses a dual-interface smart card and a data communication method thereof. The data communication method of the dual-interface smart card comprises the following steps of: receiving data from a contact interface; in the process of processing the data of the contact interface, monitoring whether a non-contact interface receives data; if the non-contact interface receives data, interrupting the processing on the data of the contact interface; and after caching the data of the non-contact interface, processing the data of the contact interface and the data of the non-contact interface. The data communication method is suitable for the smart card having two communication manners, i.e. a contact manner and a non-contact manner.
Description
Technical field
The present invention relates to technical field of intelligent card, particularly a kind of double-interface smart card and data communications method thereof.
Background technology
Double-interface smart card be a kind of be the smart card of one based on single-chip, collection contact and non-contact interface, described contact interface and non-contact interface are shared same microprocessor, operating system and EEPROM (Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)).Double-interface smart card has two operation interfaces, can chip be conducted interviews by the contact of contact interface, also can chip be conducted interviews by the noncontact interface with RF-wise by separated by a distance.
At present, in the bottom communication mode of traditional double-interface smart card, when the data call receiver function at transmitting-receiving contact interface, noncontact interface, if two interfaces all do not receive data, receiver function can not return after receiving data and just return, and continues following procedure and carries out flow process.Be in blocked state after card powers on, wait for the arrival of two interface datas, when contact interface is received data, microprocessor just begins these data are handled, and result is returned by contact interface.In this process, if there is the noncontact interface data to arrive, because the whole operation system is an one process, and the instruction of priority processing contact interface, thereby the data that cause the noncontact interface to receive can not get handling, and loss of data makes the noncontact interface communications fail.
For example, when the user used the mobile phone that double-interface smart card is installed to converse, in the mobile phone communication process, the user can't use this mobile phone to carry out bankcard consumption by the noncontact interface.
Summary of the invention
Embodiments of the invention provide a kind of double-interface smart card and data communications method thereof, can solve under the data conditions of priority processing contact interface, also can make effective processing to the data at noncontact interface.
The technical scheme that the embodiment of the invention adopts is:
A kind of data communications method of double-interface smart card comprises:
Reception is from the data of contact interface;
In the process that the data of contact interface are handled, whether monitoring noncontact interface receives data;
If described noncontact interface receives data, then interrupt processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.
A kind of double-interface smart card comprises:
Receiver module is used to receive the data from contact interface;
Monitoring modular is used for the process handled to the data of contact interface, and whether monitoring noncontact interface receives data;
Interruption processing module when being used for receiving data at described noncontact interface, is interrupted the processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.
Double-interface smart card that the embodiment of the invention provides and data communications method thereof, reception is from the data of contact interface, in the process that the data of contact interface are handled, whether monitoring noncontact interface receives data, if described noncontact interface receives data, then interrupt processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.Compared with prior art, the embodiment of the invention can solve under the data conditions of priority processing contact interface, also can make effective processing to the data at noncontact interface.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The method flow diagram that Fig. 1 provides for the embodiment of the invention one;
The method flow diagram that Fig. 2 provides for the embodiment of the invention two;
The double-interface smart card structural representation that Fig. 3, Fig. 4 provide for the embodiment of the invention three.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.
For the advantage that makes technical solution of the present invention is clearer, the present invention is elaborated below in conjunction with drawings and Examples.
Embodiment one
Present embodiment provides a kind of data communications method of double-interface smart card, and as shown in Figure 1, described method comprises:
101, reception is from the data of contact interface.
102, in the process that the data of contact interface are handled, whether monitoring noncontact interface receives data.
103, if described noncontact interface receive data, then interrupt processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.
Particularly, described interruption is to the processing of the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data at the data of described contact interface and noncontact interface handled comprise:
Interruption is to the processing of the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, continue to finish processing to the data of described contact interface, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled.
The data communications method of the double-interface smart card that the embodiment of the invention provides, reception is from the data of contact interface, in the process that the data of contact interface are handled, whether monitoring noncontact interface receives data, if described noncontact interface receives data, then interrupt processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.Compared with prior art, the embodiment of the invention can solve under the data conditions of priority processing contact interface, also can make effective processing to the data at noncontact interface.
Embodiment two
Present embodiment provides a kind of data communications method of double-interface smart card, and as shown in Figure 2, described method comprises:
201, whether the monitoring contact interface has valid data to arrive, if described contact interface has valid data to arrive execution in step 202-204; If described contact interface does not have valid data to arrive execution in step 205.
202, receive data in the mode of continuous poll from contact interface.
203, the data from contact interface that receive are handled.
204, in the process that the data of contact interface are handled, monitor the whether set of reception effective marker position at described noncontact interface, if the position, reception effective marker position at described noncontact interface shows that then described noncontact interface receives data, execution in step 210-214; If the reception effective marker position at described noncontact interface does not have set, return execution in step 203.
205, whether set of the reception effective marker position at monitoring described noncontact interface is if the position, reception effective marker position at described noncontact interface shows that then described noncontact interface receives data, execution in step 206; If the reception effective marker position at described noncontact interface does not have set, execution in step 207-208.
206, the data from the noncontact interface that receive are handled.
207, entering the SLEEP state waits for.
Wherein, arrive when there are data at contact interface or noncontact interface, the action of marching into the arena, leave the theatre of card perhaps takes place, chip will be waken up from the SLEEP state, again monitor the validity of two interface datas after waking up, after receiving valid data, withdraw from certain interface.
208, the monitoring described noncontact interface action of whether marching into the arena or leave the theatre is as if the action of marching into the arena or leave the theatre of described noncontact interface, execution in step 209; Execution in step 201 is returned in the action if do not march into the arena or leave the theatre in described noncontact interface.
209, described noncontact interface is reinitialized, return execution in step 207.
Particularly, double-interface smart card receives the data of contact interface by receiving instruction functions in the obstruction mode, whether has received data by receiving monitoring noncontact interface, effective marker position.Wherein, four interrupt service subroutines are arranged under the obstruction mode:
The contact time-delay is interrupted, and for sending the processing function of time delay command under the contact mode, priority is 5 (the highest);
The noncontact time-delay is interrupted, and for sending the processing function of time delay command under the noncontact mode, priority is 3;
The terminal of marching into the arena, leave the theatre, whether mark card reenters or leaves the RF field, and priority is 4;
The noncontact transmitting-receiving is interrupted, and for RF receives, is sent completely the processing function, priority is 2.
Wherein ,-3 ,-4 of 14443 standards layers of actual reception function by RF are realized.Finish when taking place have two kinds of situations, the data in a kind of RF of being hardware buffer district to send when RF interrupts, another kind of situation is exactly to have received frame data in the hardware buffer district.When data need send by RF, corresponding transmission zone bit can be set, when RF interrupts generation and the set of RF transmission zone bit, then think to have taken place RF transmission data like this and finish interruption, then think on the contrary to have taken place to receive and interrupt.
Wherein,-3 ,-4 layer in receiving instruction functions, do not call or realize, finish but be placed in the noncontact transmitting-receiving interrupt function, the reception instruction functions is only monitored sign RF reception data effective marker position and is determined whether RF has received complete APDU (Application Protocol Data Unit, Application Protocol Data Unit) instruction.Do like this former because:
If-3 layers are not placed in the interrupt handling routine and realize, but call the actual reception function of RF by receiving instruction functions, realization can cause and can not meet the demands aspect the sequential in the RF receiver function.In receiving instruction functions reception datacycle, suppose that card received that the request of facility wakes up from the SLEEP state, judge at first whether the contact interface data are effective, if this moment, contact interface had data to receive the treatment scheme that just begins to carry out contact interface just, the situation that can cause contingency noncontact interface to reset like this.Be placed in the interrupt handling routine and realize, receiving-3 layers of instruction and just finishing response immediately, can not occur above-mentioned unusual facility.
-4 layers are placed in the interrupt handling routine and realize, be because-3 layers finish dealing with after, any-4 layers of correct instruction that receive if can not respond, all need to send the request of delaying time of S piece in the response time of regulation.If-4 layers realization is to be placed on to receive in the RF actual reception function that instruction functions calls to realize equally, and only be marked with the words that the RF data are received in the interrupt handling routine, must when finishing, interrupt handling routine pick up counting so, timing sends the S piece, and the Frame of no matter receiving is whether the instruction and the Frame of which kind of type be correct.The realization of therefore inciting somebody to action-4 layers also has been put in the interrupt handling routine.
Secondly, because the realization of-3 ,-4 layers of instruction all has been placed in the interrupt handling routine, just caused that time delay command must send by interrupt mode under the above-mentioned contact mode, and can not adopt original manual form that sends.Reason is very simple, and noncontact transfer APDU instruction is finished in interrupt routine, has caused the Interrupt Process time longer, and the uncertainty on the execution time.Suppose to have received APDU instruction in the process to instruction process at contact interface, produce RF and received interruption, caused the uncertainty of contact interface instruction time, so artificially monitoring contact interface instruction, whether to need request delay be inappropriate, interrupt the forward delay interval instruction for the stable contact interface of system should adopt, this also is to contact the time-delay interrupt priority level why to be higher than the reason that the noncontact transmitting-receiving is interrupted simultaneously.
210, the delay instruction of timed sending contact interface.
211, the data at described noncontact interface are carried out buffer memory.
212, according to the delay instruction of described contact interface, after the data at described noncontact interface are carried out buffer memory, continue the data of described contact interface are handled.
213, the delay instruction at timed sending noncontact interface.
214, according to the delay instruction at described noncontact interface, after the data of described contact interface are handled, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled.
When contact interface has received data in processing procedure,, guaranteed not losing of RF data to this if after the noncontact interface has data to receive, can jump into the buffer memory of finishing non-contact data in this interrupt handling routine.Caused the contact command execution time to elongate but handle like this, may make contact interface produce the overtime mobile phone that causes and restart, therefore avoided this problem to produce by the delay instruction ' 60 ' of timer Timer0 timed sending contact interface.Simultaneously, the noncontact interface data processing of buffer memory also postpones than under the normal condition, also may produce the timeout issue at noncontact interface, started the delay instruction at timer Timer1 timed sending noncontact interface equally, the data at noncontact interface have been deferred to handle again after the contact interface data processing is finished and can not cause the overtime of noncontact interface.So just guaranteed contact interface instruction priority processing, but not the expected results that the contact interface data also can be effectively addressed.
The data communications method of the double-interface smart card that the embodiment of the invention provides, whether the monitoring contact interface has data to arrive, if described contact interface has data to arrive, reception is from the data of contact interface, in the process that the data of contact interface are handled, whether monitoring noncontact interface receives data, if described noncontact interface receives data, the delay instruction of elder generation's timed sending contact interface, data to described noncontact interface are carried out buffer memory, and then continue to finish processing to the data of described contact interface, the delay instruction at the noncontact of timed sending simultaneously interface, after the data of described contact interface are handled, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled.Compared with prior art, the embodiment of the invention can solve under the data conditions of priority processing contact interface, also can make effective processing to the data at noncontact interface, guarantees that the data at noncontact interface can not lost.
Embodiment three
Present embodiment provides a kind of double-interface smart card, and as shown in Figure 3, described double-interface smart card comprises:
Monitoring modular 32 is used for the process handled to the data of contact interface, and whether monitoring noncontact interface receives data;
Further, described receiver module 31, whether have valid data arrive, if described contact interface has valid data to arrive, receive data from contact interface in the mode of continuous poll if specifically being used to monitor described contact interface.
Further, described monitoring modular 32 specifically is used to monitor the whether set of reception effective marker position at described noncontact interface, if the position, reception effective marker position at described noncontact interface shows that then described noncontact interface receives data.
Further, as shown in Figure 4, described interruption processing module 33, specifically be used to interrupt processing to the data of described contact interface, after the data at described noncontact interface are carried out buffer memory, continue to finish processing, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled the data of described contact interface;
Further, as shown in Figure 4, described interruption processing module 33 comprises:
First transmitting element 331 is used for the delay instruction of timed sending contact interface;
Buffer unit 332 is used for the data at described noncontact interface are carried out buffer memory;
First processing unit 333 is used for the delay instruction according to described contact interface, after the data at described noncontact interface are carried out buffer memory, continues the data of described contact interface are handled;
Second transmitting element 334 is used for the delay instruction at timed sending noncontact interface;
Second processing unit 335 is used for the delay instruction according to described noncontact interface, after the data of described contact interface are handled, reads the data at the noncontact interface of buffer memory, and the data at described noncontact interface are handled.
The double-interface smart card that the embodiment of the invention provides, whether the monitoring contact interface has data to arrive, if described contact interface has data to arrive, receiver module receives the data from contact interface, monitoring modular is in the process that the data of contact interface are handled, whether monitoring noncontact interface receives data, if described noncontact interface receives data, the delay instruction of interruption processing module elder generation timed sending contact interface, data to described noncontact interface are carried out buffer memory, and then continue to finish processing to the data of described contact interface, the delay instruction at the noncontact of timed sending simultaneously interface, after the data of described contact interface are handled, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled.Compared with prior art, the embodiment of the invention can solve under the data conditions of priority processing contact interface, also can make effective processing to the data at noncontact interface, guarantees that the data at noncontact interface can not lost.
The above-mentioned method embodiment that provides can be provided the double-interface smart card that the embodiment of the invention provides, and concrete function realizes seeing also the explanation among the method embodiment, does not repeat them here.Double-interface smart card that the embodiment of the invention provides and data communications method thereof go for having the smart card of the way of contact and two kinds of communication modes of noncontact mode, but are not limited only to this.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within 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 (10)
1. the data communications method of a double-interface smart card is characterized in that, comprising:
Reception is from the data of contact interface;
In the process that the data of contact interface are handled, whether monitoring noncontact interface receives data;
If described noncontact interface receives data, then interrupt processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.
2. method according to claim 1 is characterized in that, the data that receive from contact interface comprise:
Whether monitor described contact interface has valid data to arrive;
If described contact interface has valid data to arrive, receive data from contact interface in the mode of continuous poll.
3. method according to claim 1 is characterized in that, whether described monitoring noncontact interface receives data comprises:
Monitor the whether set of reception effective marker position at described noncontact interface, if the position, reception effective marker position at described noncontact interface shows that then described noncontact interface receives data.
4. method according to claim 1 is characterized in that, described interruption is to the processing of the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data at the data of described contact interface and noncontact interface handled comprise:
Interruption is to the processing of the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, continue to finish processing to the data of described contact interface, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled.
5. method according to claim 4, it is characterized in that, described interruption is to the processing of the data of described contact interface, after the data at described noncontact interface are carried out buffer memory, continue to finish processing to the data of described contact interface, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled comprised:
The delay instruction of timed sending contact interface;
Data to described noncontact interface are carried out buffer memory;
According to the delay instruction of described contact interface, after the data at described noncontact interface are carried out buffer memory, continue the data of described contact interface are handled;
The delay instruction at timed sending noncontact interface;
According to the delay instruction at described noncontact interface, after the data of described contact interface are handled, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled.
6. a double-interface smart card is characterized in that, comprising:
Receiver module is used to receive the data from contact interface;
Monitoring modular is used for the process handled to the data of contact interface, and whether monitoring noncontact interface receives data;
Interruption processing module when being used for receiving data at described noncontact interface, is interrupted the processing to the data of described contact interface, the data at described noncontact interface are carried out buffer memory after, the data of described contact interface and the data at noncontact interface are handled.
7. double-interface smart card according to claim 6, it is characterized in that, described receiver module, whether specifically be used to monitor described contact interface has valid data to arrive, if described contact interface has valid data to arrive, receive data from contact interface in the mode of continuous poll.
8. double-interface smart card according to claim 6, it is characterized in that described monitoring modular specifically is used to monitor the whether set of reception effective marker position at described noncontact interface, if the position, reception effective marker position at described noncontact interface shows that then described noncontact interface receives data.
9. double-interface smart card according to claim 6, it is characterized in that, described interruption processing module, specifically be used to interrupt processing to the data of described contact interface, after the data at described noncontact interface are carried out buffer memory, continue to finish processing, read the data at the noncontact interface of buffer memory, the data at described noncontact interface are handled the data of described contact interface.
10. double-interface smart card according to claim 9 is characterized in that, described interruption processing module comprises:
First transmitting element is used for the delay instruction of timed sending contact interface;
Buffer unit is used for the data at described noncontact interface are carried out buffer memory;
First processing unit is used for the delay instruction according to described contact interface, after the data at described noncontact interface are carried out buffer memory, continues the data of described contact interface are handled;
Second transmitting element is used for the delay instruction at timed sending noncontact interface;
Second processing unit is used for the delay instruction according to described noncontact interface, after the data of described contact interface are handled, reads the data at the noncontact interface of buffer memory, and the data at described noncontact interface are handled.
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Application publication date: 20111123 |