CN103793673A - Method and device for identifying card based on near-field communication (NFC) and NFC system - Google Patents
Method and device for identifying card based on near-field communication (NFC) and NFC system Download PDFInfo
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- CN103793673A CN103793673A CN201410052375.2A CN201410052375A CN103793673A CN 103793673 A CN103793673 A CN 103793673A CN 201410052375 A CN201410052375 A CN 201410052375A CN 103793673 A CN103793673 A CN 103793673A
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Abstract
The invention discloses a method and device for identifying a card based on near-field communication (NFC) and an NFC system. The method comprises the step of reading an NFC label group controlled by the card through NFC, wherein the NFC label group comprises at least one NFC label, and the step of identifying the card by reading the result of the NFC label group. The method and device for identifying the card based on NFC and the NFC system identify the card by reading the result of the NFC label group, reduce the use number of the NFC labels, and lower the cost of NFC.
Description
Technical field
The present invention relates to the information processing technology, relate in particular to a kind of method, device and near field communication system based on near-field communication identification card.
Background technology
NFC (Near Field Communication, near-field communication) is a kind of short-range high frequency wireless communication technology, allows to carry out contactless point-to-point data transmission (in ten centimetres) between electronic equipment.This technology is developed by contact-free formula radio-frequency (RF) identification, and backward compatible radio-frequency (RF) identification.
In prior art, when the card reader based on NFC is carried out card recognition, each card needs to adopt one or more NFC label unique identifications, and NFC card reader just can be obtained the content of this card after by NFC tag recognition.
But along with the quantity of card increases, the quantity of NFC label also increases thereupon.And the cost of NFC label is higher, for a large amount of cards, the quantity of required NFC label is also very large, causes cost higher.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of method, device and near field communication system based on near-field communication identification card, to reduce the usage quantity of NFC label, thereby reduces near-field communication cost.
On the one hand, the embodiment of the present invention provides a kind of method based on near-field communication identification card, comprising:
Read the NFC set of tags that is subject to card control by NFC, described NFC set of tags comprises at least one NFC label;
According to the result that reads described NFC set of tags, identify described card.
Further, according to the result that reads described NFC set of tags, identify described card, comprising:
The positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1;
According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.
Further, in the time being provided with shielding part on described card, the result that reads the NFC label of correspondence position in described NFC set of tags by NFC is for reading failure.
On the other hand, the embodiment of the present invention provides a kind of device based on near-field communication identification card, comprising:
Reading unit, for read NFC set of tags by NFC, described NFC set of tags comprises at least one NFC label;
Recognition unit, for read the result of described NFC set of tags according to described reading unit, identifies described card.
Further, described recognition unit specifically for:
The positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1;
According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.
Further, described recognition unit specifically for: in the time being provided with shielding part on described card, the result that reads in described NFC set of tags corresponding NFC label by NFC is for reading failure.
On the other hand, the embodiment of the present invention also provides a kind of near field communication system, comprising:
Card, described card contains shielding part;
Card reader, for reading NFC set of tags information, identifies described card;
NFC set of tags, between described card and described card reader, described NFC set of tags comprises at least one NFC label;
Described card reader, also for read described NFC set of tags by NFC, according to the result that reads described NFC set of tags, identifies described card.
Further, described card reader specifically for:
In described NFC set of tags, read the positional information that NFC label is corresponding and be set to 1, in described NFC set of tags, read positional information corresponding to NFC label failure and be set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1;
According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.
Further, if be provided with shielding part on described card, the position of described shielding part is set, corresponding one by one with at least one the NFC label position in described NFC set of tags.
Further, described shielding part is for armoured magnetic field signal.
A kind of method, device and near field communication system based on near-field communication identification card that the embodiment of the present invention provides, reads the result in NFC set of tags by basis, and identification card has reduced the usage quantity of NFC label, has reduced near-field communication cost.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of a kind of method based on near-field communication identification card of providing of the embodiment of the present invention;
Fig. 2 is the concrete steps figure of identification card in the method based on near-field communication identification card that provides of the embodiment of the present invention;
Fig. 3 is the schematic diagram of NFC set of tags in the method based on near-field communication identification card that provides of the embodiment of the present invention;
Fig. 4 is the reading result schematic diagram to NFC set of tags in the method based on near-field communication identification card that provides of the embodiment of the present invention;
Fig. 5 is the schematic diagram of a kind of device based on near-field communication identification card of providing of the embodiment of the present invention;
Fig. 6 is the schematic diagram of a kind of near field communication system of providing of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not full content.
Fig. 1 shows the process flow diagram of a kind of method based on near-field communication identification card that the embodiment of the present invention provides.The method based on near-field communication identification card that the embodiment of the present invention provides can be carried out by card reader, and as shown in Figure 1, the method based on near-field communication identification card comprises:
Step 101, read NFC set of tags by near-field communication, described NFC set of tags comprises at least one NFC label.
Wherein, described NFC set of tags can, between the card reader of method shown in execution graph 1 and described card, be provided with antenna in described card reader, and described card reader reads the NFC label in the described NFC set of tags that described card is corresponding by described antenna.For example, described card reader is by described antenna transmission signal, and the signal of transmitting arrives after described card by NFC set of tags, and then feeds back to described card reader by NFC set of tags.Described card reader receiving feedback signals, and read described NFC set of tags according to feedback signal, also reading the information of all NFC labels in NFC set of tags, described information can comprise position, the state etc. of NFC label in described NFC set of tags.In described NFC set of tags, the position of NFC label and state can be identified by feedback signal by described card reader, and described state can be status recognition or unidentified state.In the time that certain on described card or a few place are provided with screen layer (being shielding part), state some or certain several NFC label corresponding with this screen layer in NFC set of tags is unidentified state.In the time being provided with or shielding part that certain several NFC labels corresponding some with NFC set of tags on described card, the signal of card reader antenna transmitting arrives the shielding part on card by this one or several NFC label, and described shielding part can absorb the signal of described card reader antenna transmitting, so read the information less than described NFC label.Wherein, described shielding part be can armoured magnetic field signal device, for example, described shielding part can be masking foil, copper layer etc.
Step 102, basis read the result of described NFC set of tags, identify described card.
For example, suppose to have in NFC set of tags 3 NFC label As, B and C, it is as shown in table 1 that card reader is read the result of described NFC set of tags.
Table 1
| NFC label information | NFC label A | NFC label B | NFC label C |
| Position | a | b | c |
| State | Status recognition | Unidentified state | Unidentified state |
As can be seen from Table 1, the position of NFC label A is a, and its state is status recognition; The position of NFC label B is b, and its state is unidentified state; The position of NFC label C is c, and its state is unidentified state.Suppose that status recognition represents with 1, unidentified state represents with 0, and the position according to NFC label A, B and C is arranged in order, to read the result of NFC set of tags be 100 to card reader, then can search the mapping table (as shown in table 2) between NFC set of tags reading result and card, find the information of the card corresponding with 100, complete the identification to current card.
Table 2
| NFC set of tags reading result | Card |
| 000 | Include information X1 |
| 001 | Include information X2 |
| NFC set of tags reading result | Card |
| 010 | Include information X3 |
| 011 | Include information X4 |
| 100 | Include information X5 |
| 101 | Include information X6 |
| 110 | Include information X7 |
| 111 | Include information X8 |
As can be seen from Table 2,100 correspondences is the card that includes information X5.And, above-mentioned 8 cards that include respectively information X1～X8, the NFC set of tags that only need to include 3 NFC labels gets final product unique identification, needs 1 NFC tag identifier with respect to each card in prior art, 8 cards just need 8 NFC labels to identify, and have saved 5 NFC labels.The like, the recognition methods that provides of the embodiment of the present invention is provided, with 4 NFC labels just can be to 2
416 cards carry out unique identification, with respect to prior art, can save 12 NFC labels; With 5 NFC labels just can be to 2
532 cards carry out unique identification, with respect to prior art, can save 27 NFC labels; Etc..
Therefore, the method for the identification near-field communication card that the embodiment of the present invention provides, reads the result of described NFC set of tags by basis, identify described card, can save 2
n-n(n is more than or equal to 1) individual NFC label, effectively reduce the usage quantity of NFC label, reduce near-field communication cost.
Exemplary, above-mentioned basis reads the result of described NFC set of tags, identifies described card, can as shown in Figure 2, comprise:
The positional information that reads NFC label in step 201, described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or the positional information that reads NFC label in described NFC set of tags is set to 0, the positional information that reads the failure of NFC label in described NFC set of tags is set to 1.
Wherein, positional information can be regarded as the state of a certain NFC label position, and position is the position of above-mentioned NFC label in NFC set of tags, and positional information is state corresponding to a certain position in the information of above-mentioned NFC label.
Exemplary, in the time that described card reader reads in described NFC set of tags a certain NFC label information, this NFC label is set to status recognition, and available binary one represents, also the positional information of this NFC label is 1; In described card reader reads less than described NFC set of tags when a certain NFC label information (now on NFC card the position corresponding with this NFC label be provided with screen layer also can think shielding part), illustrate and read failure, described NFC label is set to unidentified state, available Binary Zero represents, also the positional information of this NFC label is 0.In addition, the expression mode of above-mentioned status recognition and unidentified state is not limit, and the positional information that can be also the NFC label that status recognition is corresponding is 0, and the positional information of the NFC label that unidentified state is corresponding is 1.
In the time being provided with shielding part on described card, because described shielding part can absorb the signal that described card reader antenna is launched, so described card reader reads the information less than described NFC label.Wherein, described shielding part can be the sheet metal of armoured magnetic field, as masking foil, copper layer etc.
As shown in Figure 3, in described NFC set of tags, comprise 2 NFC labels, be respectively a NFC label 31 and the 2nd NFC label 32, preferably, in the time that described card reader reads the information of NFC label in described NFC set of tags, the information of described NFC label is set to 1, in the time that described card reader does not read the information of NFC label in described NFC set of tags, the information of described NFC label is set to 0, when described card reader reads the NFC label information in the NFC set of tags shown in Fig. 3 by card, can obtain the information combination shown in Fig. 4: 11, 10, 01, 00, wherein, 11 represent that described card reader can read the information of a NFC label 31, also can read the information of the 2nd NFC label 32, 10 represent that described card reader can read the information of a NFC label 31, but read the information less than the 2nd NFC label 32, 01 represents that described card reader reads the information less than a NFC label 31, but can read the information of the 2nd NFC label 32, 00 represents that described card reader reads the information less than a NFC label 31, also read the information less than the 2nd NFC label 32.
In present embodiment, in the time comprising two NFC labels in described NFC set of tags, just can be used for identifying 4 different cards, in the time comprising n NFC label in described NFC set of tags, just can be used for identifying 2
nthe card of Zhang Butong, with respect to existing card recognition technology, can reduce the usage quantity of NFC label, thereby reduce cost.
Fig. 5 shows a kind of device based on near-field communication identification card that the embodiment of the present invention provides, the method based on near-field communication identification card that the device that the embodiment of the present invention provides provides for realizing above-described embodiment, described device can comprise: reading unit 51 and recognition unit 52.Wherein, described reading unit 51 is for reading the NFC set of tags that is subject to card control by NFC, and described NFC set of tags comprises at least one NFC label; Described recognition unit 52, for read the result of described NFC set of tags according to described reading unit 51, is identified described card.
In the present embodiment, described recognition unit 52 specifically can be used for: the positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1; According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.Wherein, in the time being provided with shielding part on described card, the result that reads NFC label corresponding in described NFC set of tags by NFC is for reading failure.
The device based on near-field communication identification card that the embodiment of the present invention provides, for carrying out the method based on near-field communication identification card that the embodiment of the present invention provides, possess corresponding functional module, can reach the technique effect similar to described method, repeat no more herein.
Fig. 6 shows a kind of near field communication system that the present invention embodiment provides, and described system comprises: card 61, card reader 62 and NFC set of tags.Wherein, in described card 61, contain shielding part 64, and affected by shielding part 64; Described card reader 62, for reading described NFC set of tags information, is identified described card 61; Described NFC set of tags can be positioned on pallet 63, and between described card 61 and described card reader 62, described pallet 63 is for carrying described NFC set of tags, and described NFC set of tags comprises at least one NFC label; Described card reader 62, also for reading described NFC set of tags by described card 61, according to the result that reads described NFC set of tags, is identified described card 61.
In the present embodiment, described card reader 62 specifically for: the positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1; According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card 61.
In the present embodiment, on described card 61, can be provided with shielding part 64, described shielding part 64 at least with the corresponding setting of a NFC label in described NFC set of tags.Wherein, described shielding part 64 be can armoured magnetic field signal device, as sheet metal.When the position corresponding with certain NFC label in described NFC set of tags when described card 61 is not provided with shielding part, described card reader 62 can successfully read the information of described NFC label, but when the position corresponding with certain NFC label in described NFC set of tags when described card 61 is provided with shielding part, described card reader 62 cannot read the information of described NFC label, reads failure.
The near field communication system that the embodiment of the present invention provides, by card reader, according to reading the result in described NFC set of tags, identification card, has reduced the usage quantity of NFC label, has reduced near-field communication cost.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various changes and variation.All any modifications of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included within spirit of the present invention and principle.
Claims (10)
1. the method based on near-field communication NFC identification card, is characterized in that, comprising:
Read the NFC set of tags that is subject to card control by NFC, described NFC set of tags comprises at least one NFC label;
According to the result that reads described NFC set of tags, identify described card.
2. method according to claim 1, is characterized in that, according to the result that reads described NFC set of tags, identifies described card, comprising:
The positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1;
According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.
3. method according to claim 1 and 2, is characterized in that, in the time being provided with shielding part on described card, the result that reads NFC label corresponding in described NFC set of tags by NFC is for reading failure.
4. the device based on near-field communication identification card, is characterized in that, comprising:
Reading unit, for read the NFC set of tags that is subject to card control by NFC, described NFC set of tags comprises at least one NFC label;
Recognition unit, for read the result of described NFC set of tags according to described reading unit, identifies described card.
5. device according to claim 4, is characterized in that, described recognition unit specifically for:
The positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1;
According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.
6. according to the device described in claim 4 or 5, it is characterized in that, described recognition unit specifically for:
In the time being provided with shielding part on described card, the result that reads NFC label corresponding in described NFC set of tags by NFC is for reading failure.
7. a near field communication system, is characterized in that, comprising:
Card, described card contains shielding part;
Card reader, for reading NFC set of tags information, identifies described card;
NFC set of tags, between described card and described card reader, described NFC set of tags comprises at least one NFC label;
Described card reader, also for read described NFC set of tags by NFC, according to the result that reads described NFC set of tags, identifies described card.
8. system according to claim 7, is characterized in that, described card reader specifically for:
The positional information that reads NFC label in described NFC set of tags is set to 1, the positional information that reads the failure of NFC label in described NFC set of tags is set to 0, or, the positional information that reads NFC label in described NFC set of tags is set to 0, and the positional information that reads the failure of NFC label in described NFC set of tags is set to 1;
According to the combination of the positional information of the NFC label in described NFC set of tags, identify described card.
9. according to the system described in claim 7 or 8, it is characterized in that, if be provided with shielding part on described card, the position that described shielding part is set is corresponding one by one with at least one the NFC label position in described NFC set of tags.
10. system according to claim 9, is characterized in that, described shielding part is for armoured magnetic field signal.
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