CN102890764B - A kind of method and device that prevents from repeating rf data exchange - Google Patents
A kind of method and device that prevents from repeating rf data exchange Download PDFInfo
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- CN102890764B CN102890764B CN201110206530.8A CN201110206530A CN102890764B CN 102890764 B CN102890764 B CN 102890764B CN 201110206530 A CN201110206530 A CN 201110206530A CN 102890764 B CN102890764 B CN 102890764B
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Abstract
The present invention relates to a kind of method and device that prevents from repeating rf data exchange. Wherein, prevent that the method that repeats rf data exchange from comprising: last the first radio-frequency unit that carries out rf data exchange with main radio-frequency unit of record; Judge that whether the second radio-frequency unit that radio communication is connected is set up within the first default time limit request and main radio-frequency unit is same radio-frequency unit with described the first radio-frequency unit; Determine that according to judged result whether allowing to set up radio communication with main radio-frequency unit is connected. Method and the device that prevents from repeating rf data exchange of the present invention, by setting the time interval of not accessing same radio-frequency unit, effectively reduce because radio-frequency unit is strayed into the continuous transaction operation of wrong repetition that goes out to cause repeatedly at transaction borderline region by mistake, effectively reduce the probability that same radio-frequency unit is repeated to rf data exchange, thereby can promote user's use impression.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of method and device that prevents from repeating rf data exchange.
Background technology
Along with popularizing of mobile terminal, utilize the demand that mobile terminal is paid by mails to become very urgent. Have at present multiple implementation, wherein a kind of scheme realizes by integrated 2.4G radio-frequency communication module, magnetic coupling coil and magnetic induction module in the smart cards such as SIM cards of mobile phones or SD card. This scheme detects the magnetic channel information of magnetic coupling signal strength signal intensity and reception by being contained in SIM in mobile phone or SD card, activate 2.4G radio-frequency communication module on SIM or SD card and carry out rf data and hand over exchange. The exchange of this rf data can be applied in that stored value card pays, public transport subway is swiped the card etc. numerous areas. In this scheme, there is border in the region of can swiping the card, magnetic field producing due to magnetic signal generating means, if be positioned on the swiped the card borderline region of card reader, due to shake or border unstable, when card and enter can swipe the card region time and exit the region of can swiping the card, card reader can think that card priority several times pass in and out the region of can swiping the card, and cause and repeat to swipe the card.
In the above-mentioned communication system with radio-frequency enabled being made up of card reader and card, exist the problem that repeats to swipe the card, the communication system that has radio-frequency enabled at other especially also exists the problem that repeats rf data exchange near field communication system. For example, in the system that relates to mobile payment, cause unnecessary economic dispute in order to prevent from swiping the card continuously mistakenly, the POS does not generally allow double brush the same card. But this has drawn new problem, user can not swipe the card twice continuously. When take transit bus a shared mass transit card together such as one family, can bring inconvenience owing to not swiping the card continuously. This inconvenience is particularly evident at bus, the subway station of self-service ticketing.
Therefore ubiquity the problem that repeats rf data exchange in the communication system with radio-frequency enabled especially near field communication system, this has caused inconvenience to actual use, has had a strong impact on user's use impression.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and device that prevents from repeating rf data exchange, effectively reduces the probability that same radio-frequency unit is repeated to rf data exchange, promotes user's use impression.
For solving the problems of the technologies described above, the present invention proposes a kind of method that prevents from repeating rf data exchange, comprising:
Last the first radio-frequency unit that carries out rf data exchange with main radio-frequency unit of record;
Judge that whether the second radio-frequency unit that radio communication is connected is set up within the first default time limit request and main radio-frequency unit is same radio-frequency unit with described the first radio-frequency unit;
Determine that according to judged result whether allowing to set up radio communication with main radio-frequency unit is connected.
Further, said method also can have following characteristics, describedly judges that whether the second radio-frequency unit that radio frequency connects is set up within the first default time limit request is that same radio-frequency unit specifically comprises with described the first radio-frequency unit:
Described the first time limit is set;
While carrying out the last time the rear disconnection of rf data exchange radio communication connection, start timing;
Judge that within described the first time limit, whether having the second radio-frequency unit request to set up radio communication with main radio-frequency unit is connected;
Be connected if there is the second radio-frequency unit request to set up radio communication with main radio-frequency unit, stop timing and further judge whether described the second radio-frequency unit and described the first radio-frequency unit are same radio-frequency unit.
Further, said method also can have following characteristics, describedly judges whether described the second radio-frequency unit and described the first radio-frequency unit are that same radio-frequency unit specifically comprises:
Whether more described the second radio-frequency unit is consistent with the characteristic information of described the first radio-frequency unit, if unanimously described the second radio-frequency unit and described the first radio-frequency unit are same radio-frequency unit, otherwise described the second radio-frequency unit and described the first radio-frequency unit are different radio-frequency units.
Further, said method also can have following characteristics, described according to judged result determine whether allow to set up radio communication connect specifically comprise:
If described the second radio-frequency unit and described the first radio-frequency unit are different radio-frequency units to be allowed to set up radio communication and connect, connect otherwise forbid setting up radio communication.
Further, said method also can have following characteristics, and described the first radio-frequency unit and described the second radio-frequency unit are radio-frequency SIM card or radio frequency SD card.
For solving the problems of the technologies described above, the invention allows for a kind of device of stating that prevents from repeating rf data exchange, comprising:
Logging modle, for recording last the first radio-frequency unit that carries out rf data exchange with main radio-frequency unit;
Whether judge module is same radio-frequency unit with described the first radio-frequency unit for judging that the second radio-frequency unit that radio communication is connected is set up within the first default time limit request and main radio-frequency unit;
Processing module, for determining that according to the judged result of described judge module whether allowing to set up radio communication with main radio-frequency unit is connected.
Further, said apparatus also can have following characteristics, and described judge module comprises:
Setting unit, for arranging described the first time limit;
Timing unit, starts timing for carrying out the last time rf data exchange when disconnection radio communication connects afterwards;
The first judging unit, for judging that whether having the second radio-frequency unit request to set up radio communication with main radio-frequency unit within described the first time limit is connected;
The second judging unit, for stopping timing in the judged result of the first judging unit for having the second radio-frequency unit request and main radio-frequency unit to set up when radio communication is connected, and further judge whether described the second radio-frequency unit and described the first radio-frequency unit are same radio-frequency unit.
Further, said apparatus also can have following characteristics, described the second judging unit comprises comparison subelement, whether consistent with the characteristic information of described the first radio-frequency unit for more described the second radio-frequency unit, if unanimously described the second radio-frequency unit and described the first radio-frequency unit are same radio-frequency unit, otherwise described the second radio-frequency unit and described the first radio-frequency unit are different radio-frequency units.
Further, said apparatus also can have following characteristics, described processing module comprises the first processing unit, allows to set up radio communication when being different radio-frequency unit at described the second radio-frequency unit and described the first radio-frequency unit to connect, and connects otherwise forbid setting up radio communication.
Further, said apparatus also can have following characteristics, and described the first radio-frequency unit and described the second radio-frequency unit are radio-frequency SIM card or radio frequency SD card.
Method and the device that prevents from repeating rf data exchange of the present invention, by setting the time interval of not accessing same radio-frequency unit, effectively reduce because radio-frequency unit is strayed into the continuous transaction operation of wrong repetition that goes out to cause repeatedly at transaction borderline region by mistake, effectively reduce the probability that same radio-frequency unit is repeated to rf data exchange, thereby can promote user's use impression.
Brief description of the drawings
Fig. 1 is a kind of flow chart that prevents the method that repeats rf data exchange in the embodiment of the present invention;
Fig. 2 is a kind of structural representation of communication system;
Fig. 3 is the another kind of flow chart that prevents the method that repeats rf data exchange in the embodiment of the present invention;
Fig. 4 is the flow chart that magnetic flux letter radio-frequency SIM card is set up the radio communication passage between magnetic flux letter radio-frequency card reader;
Fig. 5 is a kind of structure chart that prevents the device that repeats rf data exchange in the embodiment of the present invention;
Fig. 6 is a kind of structure chart of judge module 520 in Fig. 5.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Fig. 1 is a kind of flow chart that prevents the method that repeats rf data exchange in the embodiment of the present invention. As shown in Figure 1, in the present embodiment, prevent that the flow process of the method that repeats rf data exchange from comprising:
Step 101, the first radio-frequency unit that record carries out rf data exchange for the last time;
Here, refer to for the last time recent. Wherein, the first radio-frequency unit that carries out rf data exchange with main radio-frequency unit (main radio frequency dress is the main body of carrying out the present invention and prevent the method that repeats rf data exchange) can be the radio-frequency units such as radio-frequency SIM card, radio frequency SD card. Main radio-frequency unit is also radio-frequency unit. Main radio-frequency unit and jointly formed a RF communication system with other radio-frequency units that main radio-frequency unit carries out rf data exchange. For example, in the RF communication system being formed by radio-frequency card reader and radio-frequency SIM card, card reader is main radio-frequency unit, and different radio-frequency SIM cards can be called the first radio-frequency unit, the second radio-frequency unit ..., here first, second is just in order to distinguish different radio-frequency SIM cards. For another example, the point-of-sale terminal POS machine with radio-frequency card reader also can be used as main radio-frequency unit, and the different mobile phones with radio-frequency SIM card is respectively as the first radio-frequency unit, the second radio-frequency unit ...
Wherein, rf data exchange can be the various transaction that utilize radio-frequency channel to carry out such as bus card-reading, mobile payment.
Step 102, arranged for the first time limit;
Here, the first time limit was the time interval of forbidding repeating rf data exchange. The duration in the first time limit can be changed. The duration in the first time limit is longer, and the probability that repeats rf data exchange is lower.
Step 103, starts timing while carrying out the last time the rear disconnection of rf data exchange radio communication connection;
That is to say, the time point that starts timing is that main radio-frequency unit disconnects with the first radio-frequency unit that carries out for the last time rf data exchange the moment that radio communication is connected.
Step 104, judges that within the first time limit, whether having the second radio-frequency unit request to set up radio communication connects, if perform step 105, otherwise execution step 108;
Connect if there is the second radio-frequency unit to set up radio communication to main radio-frequency unit request within the first time limit, have the possibility that repeats rf data exchange. If not having the second radio-frequency unit to set up radio communication to main radio-frequency unit request within the first time limit connects, timing time exceeded after the first time limit, any radio-frequency unit all allows to set up with main radio-frequency unit that radio frequency is connected and carry out rf data exchange, even if now the second radio-frequency unit and the first radio-frequency unit are that same radio-frequency unit also allows.
Step 105, stops timing and further judges whether the second radio-frequency unit and the first radio-frequency unit are same radio-frequency unit, if perform step 107, otherwise execution step 106;
Judge whether the second radio-frequency unit is that same radio-frequency unit can be specially with the first radio-frequency unit: relatively whether the characteristic information of the second radio-frequency unit and the first radio-frequency unit is consistent, if unanimously the second radio-frequency unit and the first radio-frequency unit are same radio-frequency unit, otherwise the second radio-frequency unit and described the first radio-frequency unit are different radio-frequency units. Here, characteristic information refers to the information of energy unique identification radio-frequency unit, for example identification information.
Step 106, allows to set up radio communication and connects;
Step 107, forbids setting up radio communication and connects;
Step 108, timing time exceeded after the first time limit, any radio-frequency unit is all allowed to set up radio frequency and connect.
Wherein, step 102 to step 105 is to judge that whether the second radio-frequency unit that radio communication connects is set up within the first default time limit request is same radio-frequency unit with the first radio-frequency unit, in other embodiments of the invention, also can realize this judgement by other step.
The present invention prevents that the method that repeats rf data exchange is applicable to various RF communication systems, comprises near field communication system, for example, comprise the RF communication system of magnetic flux letter radio-frequency card reader and magnetic flux letter radio-frequency SIM card.
Fig. 2 is a kind of structural representation of communication system. As shown in Figure 2, this communication system comprises magnetic flux letter radio-frequency card reader 21 and magnetic flux letter radio-frequency SIM card 22. Magnetic flux letter radio-frequency card reader 21 and magnetic flux letter radio-frequency SIM card 22, by the magnetic signal control communication distance of magnetic channel, carry out exchanges data by radio-frequency channel. Wherein, magnetic flux letter radio-frequency card reader 21 comprises in turn connected magnetic signal generating means 214, microcontroller 213, RF receiving and transmission module 211 and radio-frequency antenna 212. Magnetic flux letter radio-frequency SIM card 22 comprises connected in turn magnetic induction and information receiving module 224, microcontroller 223, RF receiving and transmission module 221 and radio-frequency antenna 222, and the SIM module 225 being connected with microcontroller 223.
Fig. 3 is the another kind of flow chart that prevents the method that repeats rf data exchange in the embodiment of the present invention. The flow chart that preventing shown in Fig. 3 repeats the method for rf data exchange can be applied to the communication system shown in Fig. 2. As shown in Figure 3, in the present embodiment, prevent that the flow process of the method that repeats rf data exchange from comprising:
Step 300, magnetic flux letter radio-frequency card reader and magnetic flux letter radio-frequency SIM card (being called for short card) disconnect, and the timer expiry time is set, and start timer;
The time-out time is here the same with the implication in aforesaid the first time limit, is also the time interval of forbidding repeating rf data exchange.
Step 301, magnetic flux letter radio-frequency card reader produces magnetic channel data information;
The content of magnetic channel data information can be a random number, and its effect is to utilize this random number to generate frequency and the address of radio communication for magnetic flux letter radio-frequency card reader and magnetic flux letter radio-frequency SIM card, exchanges for rf data between the two.
Step 302, magnetic flux letter radio-frequency card reader sends magnetic channel data information;
Step 303, magnetic flux letter radio-frequency card reader carries out irreversible transformation to magnetic channel data information, with transformation results generation RF spot and address;
Here, irreversible transformation refers to and utilizes the frequency of magnetic channel data Information generation radio communication and a kind of algorithm of address. Irreversible transformation can be 3DES.
Step 304, magnetic flux letter radio-frequency card reader starts Receiver Module, and uses the frequency and the address that generate;
Wherein, step 301 to step 304 is processes that magnetic flux letter radio-frequency card reader is set up the radio communication passage between magnetic flux letter radio-frequency SIM. Accordingly, magnetic flux letter radio-frequency SIM card is by the radio communication passage of setting up by the step shown in Fig. 4 between magnetic flux letter radio-frequency card reader. Magnetic flux letter radio-frequency card reader and magnetic flux believe that radio-frequency SIM is by using identical irreversible transformation algorithm to carry out computing to identical magnetic channel data information, thereby can generate frequency and the address of identical radio communication.
Step 305, magnetic flux letter radio-frequency card reader uses frequency and the address that step 304 generates to monitor whether there is card trial access in radio-frequency channel, if perform step 308, otherwise execution step 306;
Step 306, magnetic flux letter radio-frequency card reader judges that whether timer is overtime, if perform step 307, otherwise execution step 301;
Step 307, magnetic flux letter radio-frequency card reader stops timer, execution step 301;
Step 308, magnetic flux letter radio-frequency card reader stops timer, execution step 309;
Step 309, magnetic flux letter radio-frequency card reader judges that whether the characteristic information of card is the same with the characteristic information of the card accessing last time, if perform step 310, otherwise execution step 311;
Here, be the same with the implication of said last indication in Fig. 1 last time. Characteristic information refers to the information of energy unique identification card, and for example, characteristic information can be identification information.
Step 310, magnetic flux letter radio-frequency card reader judges that whether timer is overtime, if perform step 311, otherwise execution step 300;
Step 311, completes access, the characteristic information of registration card.
Complete access, mean that magnetic flux letter radio-frequency card reader can carry out rf data with card and exchange. This card that carries out rf data exchange is using as the basis of judgement next time.
Fig. 4 is the flow chart that magnetic flux letter radio-frequency SIM card is set up the radio communication passage between magnetic flux letter radio-frequency card reader. This flow process is corresponding to step 304 with step 301 in Fig. 3. As shown in Figure 4, magnetic flux letter radio-frequency SIM card is set up with magnetic flux and is believed that the process of the radio communication passage between radio-frequency card reader comprises:
Step 400, detects the magnetic signal intensity of magnetic flux letter radio-frequency card reader transmitting and receives magnetic channel data information;
Step 401, judges whether the signal strength signal intensity of magnetic signal is greater than setting value, if perform step 402, otherwise execution step 400;
Step 402, judges whether to receive magnetic channel data information, if perform step 403, otherwise execution step 400;
Step 403, carries out irreversible transformation to magnetic channel data information, with transformation results generation RF spot and address;
Step 404, sends the response with characteristic information to magnetic flux letter radio-frequency card reader by radio-frequency channel.
The method that prevents from repeating rf data exchange of the present invention, by setting the time interval of not accessing same radio-frequency unit, effectively reduce because radio-frequency unit for example, is strayed into continuous transaction (exchange of the fingering row rf data) operation of wrong repetition that goes out to cause repeatedly at transaction borderline region (borderline region of swiping the card) by mistake, effectively reduce the probability that same radio-frequency unit is repeated to rf data exchange, thereby can promote user's use impression.
The invention allows for a kind of device that prevents from repeating rf data exchange, repeat the method for rf data exchange in order to implement above-mentioned preventing.
Fig. 5 is a kind of structure chart that prevents the device that repeats rf data exchange in the embodiment of the present invention. As shown in Figure 5, in the present embodiment, prevent that the device 500 that repeats rf data exchange from comprising logging modle 510, judge module 520 and processing module 530. Wherein, logging modle 510 is for recording the first radio-frequency unit that carries out for the last time rf data exchange. Whether judge module 520 is same radio-frequency unit with the first radio-frequency unit that logging modle 510 records for judging that the second radio-frequency unit that radio communication connects is set up within the first default time limit request. Processing module 530 is for determining that according to the judged result of judge module 520 whether allowing to set up radio communication connects.
Wherein, the first time limit was the time interval of forbidding repeating rf data exchange. The duration in the first time limit can be changed. The duration in the first time limit is longer, and the probability that repeats rf data exchange is lower.
Wherein, processing module 530 may further include the first processing unit, and the first processing unit connects for allow to set up radio communication in the time that the second radio-frequency unit and the first radio-frequency unit are different radio-frequency unit, otherwise forbids setting up radio communication connection.
Fig. 6 is a kind of structure chart of judge module 520 in Fig. 5. As shown in Figure 5, in the present embodiment, judge module 520 may further include setting unit 521, timing unit 522, the first judging unit 523 and the second judging unit 524. Wherein, setting unit 521 is for arranging for the first time limit. Timing unit 522 starts timing for carrying out the last time rf data exchange when disconnection radio communication connects afterwards. The first judging unit 523 is for judging that whether having the second radio-frequency unit request to set up radio communication within the first time limit connects. The second judging unit 524 is for stopping timing and further judge whether the second radio-frequency unit and the first radio-frequency unit are same radio-frequency unit when being in the judged result of the first judging unit 523.
Wherein, the second judging unit 524 may further include comparison subelement, relatively subelement is for relatively whether the second radio-frequency unit is consistent with the characteristic information of described the first radio-frequency unit, if unanimously the second radio-frequency unit and the first radio-frequency unit are same radio-frequency unit, otherwise the second radio-frequency unit and the first radio-frequency unit are different radio-frequency units. Wherein, characteristic information refers to the information of energy unique identification radio-frequency unit, and for example, characteristic information can be identification information.
Wherein, the first radio-frequency unit and the second radio-frequency unit can be the radio-frequency unit such as radio-frequency SIM card or radio frequency SD card.
The device that prevents from repeating rf data exchange of the present invention, can be placed in the radio-frequency units such as radio-frequency card reader.
The device that prevents from repeating rf data exchange of the present invention, by setting the time interval of not accessing same radio-frequency unit, effectively reduce because radio-frequency unit for example, is strayed into continuous transaction (exchange of the fingering row rf data) operation of wrong repetition that goes out to cause repeatedly at transaction borderline region (borderline region of swiping the card) by mistake, effectively reduce the probability that same radio-frequency unit is repeated to rf data exchange, thereby can promote user's use impression.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a method that prevents from repeating rf data exchange, is characterized in that, comprising:
Last the first radio-frequency unit that carries out rf data exchange with main radio-frequency unit of record;
Judge that within the first default time limit request and main radio-frequency unit set up that radio communication is connected secondWhether radio-frequency unit is same radio-frequency unit with described the first radio-frequency unit;
Determine that according to judged result whether allowing to set up radio communication with main radio-frequency unit is connected;
The second radio-frequency unit that radio frequency connects is set up in wherein said judgement request within the first default time limitBe whether that same radio-frequency unit specifically comprises with described the first radio-frequency unit:
Described the first time limit is set;
While carrying out the last time the rear disconnection of rf data exchange radio communication connection, start timing;
Judge that within described the first time limit, whether having the second radio-frequency unit request and main radio-frequency unit to set up penetratesFrequently communication connection; If described main radio-frequency unit is magnetic flux letter radio-frequency card reader, described the second radio-frequency unit isMagnetic flux letter radio-frequency SIM card, judges within described the first time limit, whether there be the second radio-frequency unit request and masterRadio-frequency unit is set up radio communication connection and is specifically comprised: magnetic flux letter radio-frequency card reader produces the magnetic number of channel and it is believed thatBreath; Magnetic flux letter radio-frequency card reader sends magnetic channel data information; Magnetic flux letter radio-frequency card reader is to the magnetic number of channelIt is believed that breath carries out irreversible transformation, with transformation results generation RF spot and address; Magnetic communication radio frequency Card ReaderDevice starts Receiver Module, and uses the frequency and the address that generate; Magnetic flux letter radio-frequency card reader is at radio frequencyWhether on channel, use frequency and address to monitor has magnetic flux letter radio-frequency SIM card to attempt access;
Be connected if there is the second radio-frequency unit request to set up radio communication with main radio-frequency unit, stop timing alsoFurther judge whether described the second radio-frequency unit and described the first radio-frequency unit are same radio-frequency unit.
2. the method that prevents from repeating rf data exchange according to claim 1, its feature existsIn:
Describedly judge whether described the second radio-frequency unit and described the first radio-frequency unit are same radio-frequency unitSpecifically comprise:
Whether more described the second radio-frequency unit is consistent with the characteristic information of described the first radio-frequency unit, if oneCausing described the second radio-frequency unit and described the first radio-frequency unit is same radio-frequency unit, otherwise described secondRadio-frequency unit and described the first radio-frequency unit are different radio-frequency units.
3. the method that prevents from repeating rf data exchange according to claim 1, its feature existsIn:
Described according to judged result determine whether allow to set up radio communication connect specifically comprise:
If being different radio-frequency units, described the second radio-frequency unit and described the first radio-frequency unit allow to buildFire communication connection frequently from a standing position, connect otherwise forbid setting up radio communication.
4. the method that prevents from repeating rf data exchange according to claim 1, its feature existsIn:
Described the first radio-frequency unit and described the second radio-frequency unit are radio-frequency SIM card or radio frequency SD card.
5. a device that prevents from repeating rf data exchange, is characterized in that, comprising:
Logging modle, last carry out first of rf data exchange with main radio-frequency unit and penetrates for recordingFrequently device;
Judge module, leads to for judging that request is set up radio frequency with main radio-frequency unit within the first default time limitWhether the second radio-frequency unit that letter connects is same radio-frequency unit with described the first radio-frequency unit;
Whether processing module, for determining to allow according to the judged result of described judge module and main radio frequency dressSet up and fire communication connection frequently from a standing position;
Wherein said judge module comprises:
Setting unit, for arranging described the first time limit;
Timing unit, opens for carrying out the last time rear the disconnection when radio communication connects of rf data exchangeBeginning timing;
The first judging unit, for judge within described the first time limit, whether have the second radio-frequency unit request withMain radio-frequency unit is set up radio communication and is connected; If described main radio-frequency unit is magnetic flux letter radio-frequency card reader, instituteStating the second radio-frequency unit is magnetic flux letter radio-frequency SIM card, judges within described the first time limit whether have secondRadio-frequency unit request and main radio-frequency unit are set up radio communication and are connected specifically and comprise: magnetic flux letter radio-frequency card readerProduce magnetic channel data information; Magnetic flux letter radio-frequency card reader sends magnetic channel data information; Magnetic communication radio frequencyCard reader is carried out irreversible transformation to magnetic channel data information, with transformation results generation RF spot and groundLocation; Magnetic flux letter radio-frequency card reader starts Receiver Module, and uses the frequency and the address that generate; Magnetic fluxWhether letter radio-frequency card reader uses frequency and address to monitor in radio-frequency channel has magnetic flux letter radio-frequency SIM card to tasteTry into;
The second judging unit, for the judged result at the first judging unit for there being the second radio-frequency unit requestSet up when radio communication is connected and stop timing with main radio-frequency unit, and further judge described the second radio frequency dressWhether put with described the first radio-frequency unit is same radio-frequency unit.
6. the device that prevents from repeating rf data exchange according to claim 5, its feature existsIn:
Described the second judging unit comprises comparison subelement, for more described the second radio-frequency unit with described inWhether the characteristic information of the first radio-frequency unit is consistent, if consistent described the second radio-frequency unit and described firstRadio-frequency unit is same radio-frequency unit, otherwise described the second radio-frequency unit and described the first radio-frequency unit be not forSame radio-frequency unit.
7. the device that prevents from repeating rf data exchange according to claim 5, its feature existsIn:
Described processing module comprises the first processing unit, for described the second radio-frequency unit and described firstRadio-frequency unit allows to set up radio communication and connects while being different radio-frequency unit, otherwise it is logical to forbid setting up radio frequencyLetter connects.
8. the device that prevents from repeating rf data exchange according to claim 5, its feature existsIn:
Described the first radio-frequency unit and described the second radio-frequency unit are radio-frequency SIM card or radio frequency SD card.
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| CN110796794A (en) * | 2019-11-15 | 2020-02-14 | 南京沁恒微电子股份有限公司 | Portable device sharing rapid charging cable and charging method |
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