CN104392192A - Apparatus and method for realizing communication protocol multiplexing of proximity integrated circuit card - Google Patents
Apparatus and method for realizing communication protocol multiplexing of proximity integrated circuit card Download PDFInfo
- Publication number
- CN104392192A CN104392192A CN201410535603.1A CN201410535603A CN104392192A CN 104392192 A CN104392192 A CN 104392192A CN 201410535603 A CN201410535603 A CN 201410535603A CN 104392192 A CN104392192 A CN 104392192A
- Authority
- CN
- China
- Prior art keywords
- communication protocol
- unique identifier
- described terminal
- terminal
- contact card
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to an apparatus and method for realizing communication protocol multiplexing of a proximity integrated circuit card. The apparatus comprises: an identifier generation module, which is used for generating more than two unique identifiers corresponding to a communication protocol when an anti-collision operation is carried out between the proximity integrated circuit card and a terminal and sending the unique identifiers to the terminal; and a communication protocol selection module, which is used for selecting a communication protocol consistent with the communication protocol of the terminal according to the unique identifier selected by the terminal. According to the invention, a plurality of communication protocols can be supported simultaneously at one proximity integrated circuit card.
Description
Technical field
The present invention relates to non-contact card field, particularly relate to and a kind ofly in non-contact card, realize the multiplexing apparatus and method of communication protocol.
Background technology
The new technology that contact-free integrated circuit (IC) the Ka Shi world grows up recent years, it exchanges information by the induction of radiowave or electromagnetic field and card reader.Due to when non-contact IC is stuck in communication and card reader be wirelessly transmit data, so generally, both sides must observe identical communication protocol standard just can reach normal communication need.Domestic conventional contactless IC card standard agreement is ISO14443A, ISO14443B, ISO15693 etc.In addition, some off-gauge contactless IC card agreements are also had, such as: mifare1 agreement etc.
No matter adopt which kind of agreement, enter the energy field of terminal at non-contact card after, with before terminal carries out proper communication, both sides will be confirmed whether to have employed identical communication protocol standard alternately.This process is introduced below for ISO14443 agreement and card reader terminal.As shown in Figure 1, for supporting in prior art that the card reader of ISO14443 agreement (Proximity coupling device) and non-contact card (Proximity Integrated Circuit card) carry out the schematic flow sheet of protocol validation, can comprise the steps:
Step 101, card reader send a request message to non-contact card;
Step 102, non-contact card send request response message, if card reader is tested with multiple non-contact cards, then perform step 103;
Step 103, enter anticollision flow process, card reader selects a non-contact card, and sends to this non-contact card and select message;
Step 104, card reader judge whether to use selects response, if then perform step 105, otherwise performs step 113;
Particularly, the non-contact card chosen in step 103 to card reader send this non-contact card can be indicated whether to support the selection of ISO14443 agreement confirms (SAK) message, card reader by detection selection acknowledge message determine whether this non-contact card supports ISO14443 agreement;
Step 105, judge whether card reader uses ISO14443-4 agreement, if then perform step 106, otherwise perform step 113;
Step 106, card reader send selects acknowledges requests message;
Step 107, non-contact card send selects response message;
Step 108, card reader according to non-contact card whether supported protocol and Selecting parameter perform next step, if then perform step 109, otherwise perform step 112;
Step 109, card reader judge whether to need to change parameter, if then perform step 110, otherwise perform step 112;
Step 110, card reader send agreement and parameter request message;
Step 111, non-contact card send agreement and Selecting parameter response message;
Step 112, card reader and non-contact card exchange and transmit data;
Step 113, card reader are by non-ISO14443-4 protocol processes;
Step 114, card reader send and stop message;
Step 115, card reader send wakeup message, return step 102 afterwards.
As shown in Figure 2, carrying out anticollision schematic flow sheet for only having in prior art during a non-contact card, now, because only have a non-contact card in this flow process, so not collision, specifically comprising the steps:
Step 201, non-contact card enter energy field;
Step 202, non-contact card receive sending a request message of card reader;
Step 203, non-contact card send request response message;
Step 204, non-contact card receive the anti-collision request message SEL NVB (significance bit numerical value NVB:=20) that card reader sends;
Step 205, non-contact card send unique identifier;
Step 206, non-contact card receive the anti-collision request message SEL NVB (significance bit numerical value NVB:=70) that card reader sends;
Step 207, non-contact card send selects acknowledge message;
The reciprocal process that step 208, non-contact card and card reader are follow-up.
In the flow process of Fig. 1, determined the compatibility of ISO14443 agreement by 1-bit control bit in the selection acknowledge message that non-contact card sends, or meet ISO14443 agreement that is:, do not meet ISO14443 agreement, therefore, no matter which type of non-contact card replys to card reader is selected acknowledge message, and all cannot realize in a non-contact card, support ISO14443 agreement and non-ISO14443 agreement, non-contact card also can not support multiple communication protocol simultaneously equally in the case of figure 2 simultaneously.
Summary of the invention
The invention provides and a kind ofly in non-contact card, realize the multiplexing apparatus and method of communication protocol, in order to realize supporting multiple communication protocol in a non-contact card simultaneously.
The invention provides and a kind ofly in non-contact card, realize the multiplexing device of communication protocol, comprising:
Identifier generation module, for when described non-contact card and terminal carry out anticollision, generates the two or more unique identifier corresponding with communication protocol and sends to described terminal;
Communication protocol selects module, for the unique identifier selected according to described terminal, selects the communication protocol consistent with the communication protocol of described terminal.
The present invention also provides a kind of in non-contact card, realizes the multiplexing method of communication protocol, comprising:
When non-contact card and terminal carry out anticollision, generate the two or more unique identifier corresponding with communication protocol and send to described terminal;
According to the unique identifier that described terminal is selected, select the communication protocol consistent with the communication protocol of described terminal.
In the present invention, in order to support multiple communication protocol in non-contact card, in identifier generation module, generate the plural unique identifier corresponding with different communication protocol and send to terminal, terminal selects a unique identifier after carrying out anticollision process, then communication protocol selects module can select the communication protocol consistent with the communication protocol that terminal is supported according to this unique identifier, both foundation proper communication, achieve support multiple communication protocol simultaneously in non-contact card, thus realize the communication of the terminal of non-contact card and support different agreement.
Accompanying drawing explanation
Fig. 1 supports in prior art that the card reader of ISO14443 agreement and non-contact card carry out the schematic flow sheet of protocol validation;
Fig. 2 carries out anticollision schematic flow sheet when being and only having a non-contact card in prior art;
Fig. 3 is the structural representation that the present invention realizes the multiplexing device embodiment of communication protocol in non-contact card;
Fig. 4 is the process chart that the present invention realizes the instantiation of the multiplexing device embodiment of communication protocol in non-contact card;
Fig. 5 is the schematic flow sheet that the present invention realizes the embodiment of the method for protocol multiplexing in non-contact card;
Fig. 6 is the idiographic flow schematic diagram that the present invention realizes step 51 in the multiplexing embodiment of the method for communication protocol in non-contact card;
Fig. 7 is the idiographic flow schematic diagram that the present invention realizes step 52 in the multiplexing embodiment of the method for communication protocol in non-contact card.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
As shown in Figure 3, for the present invention realizes the structural representation of the multiplexing device embodiment of communication protocol in non-contact card, this device can comprise identifier generation module 31, communication protocol selects module 32, and communication protocol selects module 32 to be connected with identifier generation module 31.
In the present embodiment, identifier generation module 31, for when non-contact card and terminal carry out anticollision, generates the two or more unique identifier corresponding with communication protocol and sends to terminal; Communication protocol selects the unique identifier of module 32 for selecting according to terminal, selects the communication protocol consistent with the communication protocol of terminal.
In the present embodiment, generate plural unique identifier by identifier generation module 31, make terminal collision to be detected, perform anticollision process, a final selection unique identifier.Due to the communication protocol that different unique identifiers is corresponding different, so select to select the communication protocol consistent with the communication protocol of terminal according to the unique identifier selected in module 32 in communication protocol, thus carry out proper communication.Therefore, by this device, make can support multiple communication protocol in non-contact card simultaneously, non-contact card is being set up in the process communicated with terminal, the communication protocol corresponding to unique identifier of carrying out anticollision process selecting according to terminal communicates with terminal, realizes the multiplexing of in non-contact card communication protocol.
It should be noted that, have several non-contact cards in the energy field of no matter terminal, the present embodiment all can be suitable for.
Alternatively, schematic diagram shown in Figure 3 again, identifier generation module 31 can comprise the first receiving element 311, identifier generation unit 312, first transmitting element 313, identifier generation unit 312 is connected with the first receiving element 311, and the first transmitting element 313 is connected with identifier generation unit 312.Wherein, the anti-collision request message that sends for receiving terminal of the first receiving element 311; Identifier generation unit 312, for according to above-mentioned anti-collision request message, generates the two or more unique identifier corresponding with communication protocol; First transmitting element 313 is for sending to terminal by above-mentioned two or more unique identifier.
Alternatively, schematic diagram shown in Figure 3 again, communication protocol selects module 32 can comprise the second receiving element 321, identifier identifying unit 322, communication protocol selection unit 323, identifier identifying unit 322 is connected with the second receiving element 321, and communication protocol selection unit 323 is connected with identifier identifying unit 322.Wherein, the anti-collision acknowledge message that the second receiving element 321 sends for receiving terminal, carries the unique identifier that terminal is selected in this anti-collision acknowledge message; Identifier identifying unit 322, for according to above-mentioned anti-collision acknowledge message, judges the unique identifier that terminal is selected; The unique identifier of communication protocol selection unit 323 for selecting according to terminal, selects the communication protocol consistent with the communication protocol of terminal.
Alternatively, identifier identifying unit 322 is for according to anti-collision acknowledge message, and poll two or more unique identifier, judges the unique identifier that terminal is selected.
Alternatively, in the present embodiment, non-contact card can be single-chip non-contact card, also can be multi-chip non-contact card.
Alternatively, the unique identifier in the present embodiment can with communication protocol one_to_one corresponding.In addition, the situation of the corresponding multiple communication protocol of a unique identifier can also be there is.
Below by instantiation, the present embodiment is described.
As shown in Figure 4, in non-contact card, the process chart of the instantiation of the multiplexing device embodiment of communication protocol is realized for the present invention, in this example, terminal is specially card reader, card reader supports ISO14443 agreement, non-contact card is Type-A card, and the course of work of this example specifically comprises the steps:
Step 401, non-contact card enter energy field;
Step 402, non-contact card receive the request message REQA (or WUPA) of card reader;
Step 403, non-contact card send response message;
Step 404, non-contact card receive the anti-collision request message SEL NVB (significance bit numerical value NVB:=20) that card reader sends;
Particularly, NVB:=20 defines card reader and will not send any part of unique identifier;
The unique identifier of step 405, non-contact card transmit band collision;
Particularly, non-contact card distributes different unique identifiers to different communication protocol, and non-contact card sends different unique identifiers while response anti-collision message, and what obtain is exactly the unique identifier that non-contact card transmit band is collided;
Step 406, card reader detect collision rift, carry out anticollision flow process;
Particularly, after card reader detects collision, judge there is multiple non-contact card in energy field, card reader will carry out anticollision flow process;
Step 407, non-contact card receive the anti-collision acknowledge message SEL NVB (significance bit numerical value NVB:=70) that card reader sends;
Particularly, NVB:=70 defines card reader and will send complete unique identifier;
Step 408, non-contact card judge whether card reader have selected first unique identifier, if then perform step 409, otherwise perform step 411;
Particularly, non-contact card judges according to the complete unique identifier carried in anti-collision acknowledge message;
Step 409, non-contact card send the first corresponding with first unique identifier and select acknowledge message;
Step 410, non-contact card will adopt the first communication protocol;
Step 411, non-contact card judge whether card reader have selected second unique identifier, if then perform step 412, otherwise perform step 414;
Step 412, non-contact card send the second corresponding with second unique identifier and select acknowledge message;
Step 413, non-contact card will adopt the second communication protocol;
Step 414, non-contact card judge whether card reader have selected the n-th unique identifier, if then perform step 415, otherwise perform step 417;
Step 415, non-contact card send corresponding with the n-th unique identifier n-th kind and select acknowledge message;
Step 416, non-contact card are by employing n-th kind of communication protocol;
Step 417, error handling processing, return step 402;
Step 418, non-contact card judge whether to receive stopping message, if then return step 402, otherwise perform step 419;
Step 419, non-contact card judge whether to make mistakes, if not, perform step 420, otherwise perform step 417;
Step 420, non-contact card and card reader carry out proper communication.
Wherein, n be more than or equal to 3 natural number.
As shown in Figure 5, for the present invention realizes the schematic flow sheet of the multiplexing embodiment of the method for communication protocol in non-contact card, the method can perform by device as shown in Figure 1, and the method specifically can comprise the steps:
Step 51, identifier generation module, when non-contact card and terminal carry out anticollision, generate the two or more unique identifier corresponding with communication protocol and send to terminal;
The unique identifier that step 52, communication protocol select module to select according to terminal, selects the communication protocol consistent with the communication protocol of terminal.
In the present embodiment, because identifier generation module generates the unique identifier of plural corresponding different communication protocol, terminal is made to perform anticollision process choosing unique identifier, so the unique identifier that communication protocol selects module can select according to terminal selects the communication protocol consistent with the communication protocol of terminal, thus non-contact card and terminal is made to carry out proper communication.By this method, can make non-contact card from multiple communication protocol, select the agreement consistent with terminal to communicate, thus in non-contact card, realize the multiplexing of communication protocol.
Alternatively, as shown in Figure 6, for the present invention realizes the idiographic flow schematic diagram of step 51 in the multiplexing embodiment of the method for communication protocol in non-contact card, the method can perform by identifier generation module as shown in Figure 3, and step 51 can comprise the steps:
The anti-collision request message that step 511, the first receiving element receiving terminal send;
Step 512, identifier generation unit, according to anti-collision request message, generate the two or more unique identifier corresponding with communication protocol;
Two or more unique identifier is sent to terminal by step 513, the first transmitting element.
Alternatively, as shown in Figure 7, for the present invention realizes the idiographic flow schematic diagram of step 52 in the multiplexing embodiment of the method for communication protocol in non-contact card, the method can select module to perform by the communication protocol shown in Fig. 3, and step 52 can comprise the steps:
The anti-collision acknowledge message that step 521, the second receiving element receiving terminal send, carries the unique identifier that terminal is selected in this anti-collision acknowledge message;
Step 522, identifier identifying unit, according to anti-collision acknowledge message, judge the unique identifier that terminal is selected;
The unique identifier that step 523, communication protocol selection unit are selected according to terminal, selects the communication protocol consistent with the communication protocol of terminal.
Alternatively, in step 521, identifier identifying unit is according to anti-collision acknowledge message, and poll two or more unique identifier, judges the unique identifier that terminal is selected.
Alternatively, in the present embodiment, non-contact card can be single-chip non-contact card, also can be multi-chip non-contact card.
Alternatively, the unique identifier in the present embodiment can with communication protocol one_to_one corresponding.In addition, the situation of the corresponding multiple communication protocol of a unique identifier can also be there is.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. in non-contact card, realize the multiplexing device of communication protocol, it is characterized in that, comprising:
Identifier generation module, for when described non-contact card and terminal carry out anticollision, generates the two or more unique identifier corresponding with communication protocol and sends to described terminal;
Communication protocol selects module, for the unique identifier selected according to described terminal, selects the communication protocol consistent with the communication protocol of described terminal.
2. device according to claim 1, is characterized in that, described identifier generation module comprises:
First receiving element, for receiving the anti-collision request message that described terminal sends;
Identifier generation unit, for according to described anti-collision request message, generates the two or more unique identifier corresponding with communication protocol;
First transmitting element, for sending to described terminal by described two or more unique identifier.
3. device according to claim 1, is characterized in that, described communication protocol selects module to comprise:
Second receiving element, for receiving the anti-collision acknowledge message that described terminal sends, carries the unique identifier that described terminal is selected in described anti-collision acknowledge message;
Identifier identifying unit, for according to described anti-collision acknowledge message, judges the unique identifier that described terminal is selected;
Communication protocol selection unit, for the unique identifier selected according to described terminal, selects the communication protocol consistent with the communication protocol of described terminal.
4. device according to claim 3, is characterized in that, described identifier identifying unit is used for according to described anti-collision acknowledge message, and two or more unique identifier described in poll, judges the unique identifier that described terminal is selected.
5. device according to claim 1, is characterized in that, described non-contact card is single-chip non-contact card.
6. in non-contact card, realize the multiplexing method of communication protocol, it is characterized in that, comprising:
When non-contact card and terminal carry out anticollision, generate the two or more unique identifier corresponding with communication protocol and send to described terminal;
According to the unique identifier that described terminal is selected, select the communication protocol consistent with the communication protocol of described terminal.
7. method according to claim 6, is characterized in that, the two or more unique identifier that described generation is corresponding with communication protocol also sends to described terminal to comprise:
Receive the anti-collision request message that described terminal sends;
According to described anti-collision request message, generate the two or more unique identifier corresponding with communication protocol;
Described two or more unique identifier is sent to described terminal.
8. method according to claim 6, is characterized in that, the described unique identifier selected according to described terminal, selects the communication protocol consistent with the communication protocol of described terminal to comprise:
Receive the anti-collision acknowledge message that described terminal sends, in described anti-collision acknowledge message, carry the unique identifier that described terminal is selected;
According to described anti-collision acknowledge message, judge the unique identifier that described terminal is selected;
According to the unique identifier that described terminal is selected, select the communication protocol consistent with the communication protocol of described terminal.
9. method according to claim 8, is characterized in that, the unique identifier that the described terminal of described judgement is selected comprises: according to described anti-collision acknowledge message, two or more unique identifier described in poll, judges the unique identifier that described terminal is selected.
10. method according to claim 6, is characterized in that, described non-contact card is single-chip non-contact card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535603.1A CN104392192A (en) | 2014-10-11 | 2014-10-11 | Apparatus and method for realizing communication protocol multiplexing of proximity integrated circuit card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535603.1A CN104392192A (en) | 2014-10-11 | 2014-10-11 | Apparatus and method for realizing communication protocol multiplexing of proximity integrated circuit card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104392192A true CN104392192A (en) | 2015-03-04 |
Family
ID=52610094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410535603.1A Pending CN104392192A (en) | 2014-10-11 | 2014-10-11 | Apparatus and method for realizing communication protocol multiplexing of proximity integrated circuit card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104392192A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3214582A1 (en) * | 2016-03-01 | 2017-09-06 | Proton World International N.V. | Application selection in a mobile terminal |
| US20170255925A1 (en) * | 2016-03-01 | 2017-09-07 | Proton World International N.V. | Configuration of a transaction in a proximity circuit |
| CN107147986A (en) * | 2016-03-01 | 2017-09-08 | 质子世界国际公司 | Close to the configuration of the business in circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516840A (en) * | 2001-04-25 | 2004-07-28 | �ź㴫 | Adaptive multi-protocol communications system |
| CN1745399A (en) * | 2002-12-17 | 2006-03-08 | 国际条形码公司 | Method and system for providing coupon savings using credit card processing infrastructure and bar-code coupon with 2-d components |
| CN1936934A (en) * | 2006-10-13 | 2007-03-28 | 凤凰微电子（中国）有限公司 | Method for integrating multiple data transmission interfaces on smart card and novel smart card |
| CN101473336A (en) * | 2006-04-05 | 2009-07-01 | Nxp股份有限公司 | Method of dynamically allocating contacts of a subscriber chip card in a mobile terminal, and corresponding subscriber chip card and mobile terminal |
-
2014
- 2014-10-11 CN CN201410535603.1A patent/CN104392192A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516840A (en) * | 2001-04-25 | 2004-07-28 | �ź㴫 | Adaptive multi-protocol communications system |
| CN1745399A (en) * | 2002-12-17 | 2006-03-08 | 国际条形码公司 | Method and system for providing coupon savings using credit card processing infrastructure and bar-code coupon with 2-d components |
| CN101473336A (en) * | 2006-04-05 | 2009-07-01 | Nxp股份有限公司 | Method of dynamically allocating contacts of a subscriber chip card in a mobile terminal, and corresponding subscriber chip card and mobile terminal |
| CN1936934A (en) * | 2006-10-13 | 2007-03-28 | 凤凰微电子（中国）有限公司 | Method for integrating multiple data transmission interfaces on smart card and novel smart card |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3214582A1 (en) * | 2016-03-01 | 2017-09-06 | Proton World International N.V. | Application selection in a mobile terminal |
| US20170255925A1 (en) * | 2016-03-01 | 2017-09-07 | Proton World International N.V. | Configuration of a transaction in a proximity circuit |
| CN107147986A (en) * | 2016-03-01 | 2017-09-08 | 质子世界国际公司 | Close to the configuration of the business in circuit |
| CN107145913A (en) * | 2016-03-01 | 2017-09-08 | 质子世界国际公司 | Application selection in mobile terminal |
| FR3048531A1 (en) * | 2016-03-01 | 2017-09-08 | Proton World Int Nv | SELECTION OF APPLICATION IN A MOBILE TERMINAL |
| US10223628B2 (en) | 2016-03-01 | 2019-03-05 | Proton World International N.V. | Application selection in a mobile terminal |
| CN107145913B (en) * | 2016-03-01 | 2020-10-27 | 质子世界国际公司 | Application selection in a mobile terminal |
| CN107147986B (en) * | 2016-03-01 | 2021-07-09 | 质子世界国际公司 | Method, integrated circuit and communication system for contactless communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2577554B1 (en) | Method of managing communications with a nfc controller | |
| CN102388596B (en) | Method of detecting a NFC device emulating several contactless cards which may use a plurality of protocols | |
| CN105472546A (en) | Near field communication method and mobile terminal | |
| KR20180019014A (en) | Communication apparatus, communication method, and program | |
| CN103577784B (en) | Active RFID reader collision-proof method and system based on multi-radio | |
| KR101329227B1 (en) | RFID Tag, Terminals for RFID | |
| CN103229189B (en) | Method of managing the dialogue between an item of equipment and at least one multi-application object such as a contactless chip card and corresponding object | |
| US9615196B2 (en) | NFC device configuration after device power up | |
| CN106415591B (en) | Electronic equipment, system and method for NFC | |
| CN103414497B (en) | For communication between electronic by the control method forwarded and corresponding equipment | |
| CN104517146A (en) | NFC tag, communication method and system | |
| JP2017532631A (en) | Mobile payment method and apparatus, and short-range wireless communication device | |
| CN104392192A (en) | Apparatus and method for realizing communication protocol multiplexing of proximity integrated circuit card | |
| CN105550868A (en) | Mobile payment method and apparatus | |
| CN106372898A (en) | Mobile communication device and cloud computer system | |
| TW201349005A (en) | Security information interactive system, security information interactive device and security information interactive method based on spreading parameter set | |
| CN104081679B (en) | Near field communication method and near-field communication equipment | |
| EP2782400A1 (en) | NFC controller architecture for simultaneous emulation of multiple NFC technologies in one NFC listen device | |
| CN106664122B (en) | A kind of radio frequency discovery method, chip and equipment | |
| CN103701505A (en) | NFC (Near Field Communication) device | |
| CN101398884B (en) | Smart card reader and its use method | |
| CN101159641B (en) | Can bus extension method | |
| CN104853356A (en) | NFC (Near Field Communication) system intelligent recognition method | |
| CN105787408A (en) | Card reader supporting high-speed data communication, and work method thereof | |
| CN104579870A (en) | RFID-chip-based fast networking method and special device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |