CN103001670B - A kind of adaptive approach of terminal NFC coupling and device - Google Patents
A kind of adaptive approach of terminal NFC coupling and device Download PDFInfo
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- CN103001670B CN103001670B CN201110273236.9A CN201110273236A CN103001670B CN 103001670 B CN103001670 B CN 103001670B CN 201110273236 A CN201110273236 A CN 201110273236A CN 103001670 B CN103001670 B CN 103001670B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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Abstract
The invention discloses the adaptive approach that a kind of terminal near-field communication (NFC) is mated, the match circuit for changing the impedance of NFC radio frequency path is set in terminal; The match circuit information that terminal record is initial and NFC signal strength signal intensity, after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity; After all adjustment terminates, the match circuit information according to record arranges match circuit; The present invention also discloses the self-reacting device that a kind of terminal NFC mates; By the solution of the present invention, terminal can be made to obtain best NFC communication state according to the match circuit of condition selecting the best of current NFC communication, the use sense meeting user is subject to.
Description
Technical field
The present invention relates to near-field communication (NFC) function of terminal, particularly relate to adaptive approach and the device of a kind of terminal NFC coupling.
Background technology
Nowadays the mobile-phone payment life entering people slowly.As long as have one with the mobile phone of NFC function, mass transit card, bank card, credit card that the needs that just can replace usually going on a journey use, NFC can solve all difficult problem.Present NFC mainly contains two kinds of standards, 2.5GHz and 13.56MHz.2.5GHz is mainly used in financial field, and 13.56MHz is used in the environment closed, as mass transit card, mess card etc.What promote mainly before operator intention is the scheme of 13.56MHz, and the program is by NFC function i ntegration in client identification module (SIM, SubscriberIdentityModule) card, and mobile phone only needs to provide the antenna of NFC just can complete the function of swiping the card.Such design can effectively reduce the design complexities of NFC, facilitates the popularization of technology.But because NFC function is integrated by SIM card, and the card that different SIM card manufacturers produces, the impedance of output port is all different, and this just requires that mobile phone must design different match circuits to the card of different SIM card manufacturer, with, this is obviously unpractical.Current industry does not also have good solution for this problem, only way is exactly the frequency of antenna adjusted enough wide, to the card of compatible different SIM card vendor, but this adjustment is to sacrifice NFC communication effect to realize, and the use sense affecting user is subject to.
Summary of the invention
In view of this, the adaptive approach that main purpose of the present invention is to provide a kind of terminal NFC to mate and device, make terminal obtain best NFC communication state.
For achieving the above object, technical scheme of the present invention is achieved in that
The adaptive approach of a kind of terminal NFC coupling provided by the invention, the method comprises:
In terminal, the match circuit for changing the impedance of NFC radio frequency path is set;
The match circuit information that terminal record is initial and NFC signal strength signal intensity, after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity;
After all adjustment terminates, the match circuit information according to record arranges match circuit.
In such scheme, the described match circuit for changing the impedance of NFC radio frequency path comprises switch, inductance and electric capacity, and wherein, inductance and electric capacity form match circuit by series and parallel, and switch, for regulating match circuit, changes the impedance of NFC radio frequency path.
In such scheme, described after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, and the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity are:
Terminal regulates the match circuit for changing the impedance of NFC radio frequency path, and after each match circuit regulated for changing the impedance of NFC radio frequency path, detect the NFC signal strength signal intensity that NFC antenna is current, the NFC signal strength signal intensity of current NFC signal strength signal intensity and record is compared, when the NFC signal strength signal intensity of current NFC signal intensity ratio record is strong, replace match circuit information and the NFC signal of record by current match circuit information and NFC signal strength signal intensity in record, otherwise regulate, until all regulate end next time.
In such scheme, described match circuit information is the switching-state information of described match circuit.
In such scheme, the current NFC signal strength signal intensity of described detection NFC antenna is: terminal to be coupled current the radiofrequency signal of the coming band-pass filter by 13.56MHz from NFC antenna, analog signal, through frequency discriminator outputting analog signal, is obtained NFC signal strength signal intensity by analog to digital converter (ADC) sampling by filtered signal.
In such scheme, the method comprises further: after all adjustment terminates, and the match circuit information of record and client identification module (SIM) card information are carried out one_to_one corresponding; Entering NFC in terminal swipes the card after state, and reading SIM card information, self searching whether preserve the match circuit information corresponding with described SIM card information, when finding, directly arranges match circuit according to the match circuit information of described correspondence.
The self-reacting device of a kind of terminal NFC coupling provided by the invention, this device is provided with the match circuit for changing the impedance of NFC radio frequency path, and this device also comprises: NFC match control module, NFC signal strength detection module, access module, NFC antenna; Wherein,
NFC match control module, for regulating described match circuit, notice NFC signal strength detection module detects the current NFC signal strength signal intensity of NFC antenna, and match circuit information the strongest for NFC signal strength signal intensity and NFC signal strength signal intensity are sent to access module; After all adjustment terminates, the match circuit information according to recording in access module arranges match circuit;
NFC signal strength detection module, for detecting the NFC signal strength signal intensity of initial matching circuit, and detects the current NFC signal strength signal intensity of NFC antenna according to the notice of NFC match control module, and NFC signal strength signal intensity is sent to NFC match control module;
Access module, for record matching circuit information and NFC signal strength signal intensity;
NFC antenna, for receiving and sending NFC signal.
In such scheme, described NFC match control module, is further used for after all adjustment terminates, notice access module;
Described access module, after the notice that the whole adjustments being further used for receiving NFC match control module terminate, carries out one_to_one corresponding by the match circuit information of record and SIM card information, and preserves.
In such scheme, described NFC match control module, also swipe the card after state for entering NFC in terminal further, notice access module reading SIM card information, and receive access module preserve the notice of the match circuit information corresponding with SIM card information after, directly match circuit is set according to the match circuit information of the described correspondence recorded in access module;
Described access module, further also for reading SIM card information, self find preserve the match circuit information corresponding with described SIM card information time, notice NFC match control module.
The invention provides adaptive approach and the device of a kind of terminal NFC coupling, the match circuit for changing the impedance of NFC radio frequency path is set in terminal; The match circuit information that terminal record is initial and NFC signal strength signal intensity, after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity; After all adjustment terminates, the match circuit information according to record arranges match circuit; So, terminal can be made to obtain best NFC communication state according to the match circuit of condition selecting the best of current NFC communication, the use sense meeting user is subject to.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention realizes the adaptive approach that a kind of terminal NFC mates;
Fig. 2 is the schematic diagram of the match circuit for changing the impedance of NFC radio frequency path of the present invention;
Fig. 3 is the structural representation that the present invention realizes the self-reacting device that a kind of terminal NFC mates.
Embodiment
Basic thought of the present invention is: arrange the match circuit for changing the impedance of NFC radio frequency path in terminal; The match circuit information that terminal record is initial and NFC signal strength signal intensity, after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity; After all adjustment terminates, the match circuit information according to record arranges match circuit.
Below by drawings and the specific embodiments, the present invention is described in further detail.
The present invention realizes the adaptive approach that a kind of terminal NFC mates, and as shown in Figure 1, the method comprises following step:
Step 101: the match circuit for changing the impedance of NFC radio frequency path is set in terminal;
The described match circuit for changing the impedance of NFC radio frequency path is generally made up of switch, inductance and electric capacity, and wherein, inductance and electric capacity form match circuit by series and parallel, and switch, for regulating match circuit, changes the impedance of NFC radio frequency path; An example provided by the invention as shown in Figure 2, the described match circuit for changing the impedance of NFC radio frequency path is made up of interrupteur SW 1-SW12, inductance L 1-inductance L 6 and electric capacity C1-C6, is wherein the first match circuit when SW1, SW2, SW3, SW4 are all closed; Be the second match circuit when again SW5, SW6, SW7, SW8 also being closed; Be the third match circuit when finally SW9, SW10, SW11, SW12 also being closed; Can find out, by change switch state can the impedance of these three kinds of match circuits different, the impedance of NFC radio frequency path can be changed by the state changing switch.
Step 102: the match circuit information that terminal record is initial and NFC signal strength signal intensity, after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity;
Concrete, terminal is swiped the card after state entering NFC, detect the NFC signal strength signal intensity that NFC antenna is current, record initial match circuit information and NFC signal strength signal intensity, afterwards, terminal regulates the match circuit for changing the impedance of NFC radio frequency path, and after each match circuit regulated for changing the impedance of NFC radio frequency path, detect the NFC signal strength signal intensity that NFC antenna is current, the NFC signal strength signal intensity of current NFC signal strength signal intensity and record is compared, when the NFC signal strength signal intensity of current NFC signal intensity ratio record is strong, replace match circuit information and the NFC signal of record by current match circuit information and NFC signal strength signal intensity in record, otherwise regulate next time, until all regulate end, the strongest match circuit information of NFC signal strength signal intensity and NFC signal strength signal intensity is have recorded in described record,
Described match circuit information is the switching-state information of described match circuit;
The NFC signal strength signal intensity that described detection NFC antenna is current, be generally, terminal to be coupled current the radiofrequency signal of the coming band-pass filter by 13.56MHz from NFC antenna, analog signal, through frequency discriminator outputting analog signal, is obtained NFC signal strength signal intensity by analog to digital converter (ADC) sampling by filtered signal.
Step 103: after all adjustment terminates, the match circuit information according to record arranges match circuit;
Concrete, after all adjustment terminates, the on off state according to the match circuit of record regulates match circuit.
This step comprises further, after all adjustment terminates, the match circuit information of record and SIM card information is carried out one_to_one corresponding;
Further, the method also comprises: enter NFC in terminal and swipe the card after state, reading SIM card information, self searching whether preserve the match circuit information corresponding with described SIM card information, when finding, directly match circuit is set according to the match circuit information of described correspondence, does not perform step 102; When not finding, terminal starts to perform step 102.
In order to realize said method, the present invention also provides a kind of terminal NFC self-reacting device mated, as shown in Figure 3, this device is provided with the match circuit 31 for changing the impedance of NFC radio frequency path, and this device also comprises: NFC match control module 32, NFC signal strength detection module 33, access module 34, NFC antenna 35; Wherein,
NFC match control module 32, for regulating described match circuit 31, notice NFC signal strength detection module detects the current NFC signal strength signal intensity of NFC antenna, and match circuit information the strongest for NFC signal strength signal intensity and NFC signal strength signal intensity are sent to access module 34; After all adjustment terminates, match circuit 31 is set according to the match circuit information of record in access module 34;
NFC signal strength detection module 33, for detecting the NFC signal strength signal intensity of initial matching circuit 31, and detect the current NFC signal strength signal intensity of NFC antenna 35 according to the notice of NFC match control module 32, and NFC signal strength signal intensity is sent to NFC match control module 32;
Access module 34, for record matching circuit information and NFC signal strength signal intensity;
NFC antenna 35, for receiving and sending NFC signal;
The described match circuit 31 for changing the impedance of NFC radio frequency path is generally made up of switch, inductance and electric capacity, and wherein, inductance and electric capacity form match circuit by series and parallel, and switch, for regulating match circuit, changes the impedance of NFC radio frequency path;
Described NFC match control module 32, is further used for after all adjustment terminates, notice access module 34;
Described access module 34, after the notice that the whole adjustments being further used for receiving NFC match control module 32 terminate, carries out one_to_one corresponding by the match circuit information of record and SIM card information, and preserves;
Described NFC match control module 32, also swipe the card after state for entering NFC in terminal further, notice access module 34 reading SIM card information, and receive access module 34 preserve the notice of the match circuit information corresponding with SIM card information after, directly match circuit 31 is set according to the match circuit information of described correspondence of record in access module 34;
Described access module 34, further also for reading SIM card information, self searching whether preserve the match circuit information corresponding with described SIM card information, when finding, notice NFC match control module 32.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (9)
1. the adaptive approach that mates of terminal near-field communication (NFC), it is characterized in that, the method comprises:
In terminal, the match circuit for changing the impedance of NFC radio frequency path is set;
The match circuit information that terminal record is initial and NFC signal strength signal intensity, after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity;
After all adjustment terminates, the match circuit information according to record arranges match circuit.
2. adaptive approach according to claim 1, it is characterized in that, the described match circuit for changing the impedance of NFC radio frequency path comprises switch, inductance and electric capacity, wherein, inductance and electric capacity form match circuit by series and parallel, switch, for regulating match circuit, changes the impedance of NFC radio frequency path.
3. adaptive approach according to claim 2, it is characterized in that, described after each match circuit regulated for changing the impedance of NFC radio frequency path, terminal detects the current NFC signal strength signal intensity of NFC antenna, and the match circuit information that record NFC signal strength signal intensity is the strongest and NFC signal strength signal intensity are:
Terminal regulates the match circuit for changing the impedance of NFC radio frequency path, and after each match circuit regulated for changing the impedance of NFC radio frequency path, detect the NFC signal strength signal intensity that NFC antenna is current, the NFC signal strength signal intensity of current NFC signal strength signal intensity and record is compared, when the NFC signal strength signal intensity of current NFC signal intensity ratio record is strong, replace match circuit information and the NFC signal of record by current match circuit information and NFC signal strength signal intensity in record, otherwise regulate, until all regulate end next time.
4. adaptive approach according to claim 3, is characterized in that, described match circuit information is the switching-state information of described match circuit.
5. adaptive approach according to claim 4, it is characterized in that, the current NFC signal strength signal intensity of described detection NFC antenna is: terminal to be coupled current the radiofrequency signal of the coming band-pass filter by 13.56MHz from NFC antenna, analog signal, through frequency discriminator outputting analog signal, is obtained NFC signal strength signal intensity by analog to digital converter (ADC) sampling by filtered signal.
6. adaptive approach according to claim 1, is characterized in that, the method comprises further: after all adjustment terminates, the match circuit information of record and client identification module SIM card information are carried out one_to_one corresponding; Entering NFC in terminal swipes the card after state, and reading SIM card information, self searching whether preserve the match circuit information corresponding with described SIM card information, when finding, directly arranges match circuit according to the match circuit information of described correspondence.
7. a self-reacting device for terminal NFC coupling, it is characterized in that, this device is provided with the match circuit for changing the impedance of NFC radio frequency path, and this device also comprises: NFC match control module, NFC signal strength detection module, access module, NFC antenna; Wherein,
NFC match control module, for regulating described match circuit, notice NFC signal strength detection module detects the current NFC signal strength signal intensity of NFC antenna, and match circuit information the strongest for NFC signal strength signal intensity and NFC signal strength signal intensity are sent to access module; After all adjustment terminates, the match circuit information according to recording in access module arranges match circuit;
NFC signal strength detection module, for detecting the NFC signal strength signal intensity of initial matching circuit, and detects the current NFC signal strength signal intensity of NFC antenna according to the notice of NFC match control module, and NFC signal strength signal intensity is sent to NFC match control module;
Access module, for record matching circuit information and NFC signal strength signal intensity;
NFC antenna, for receiving and sending NFC signal.
8. self-reacting device according to claim 7, is characterized in that, described NFC match control module, is further used for after all adjustment terminates, notice access module;
Described access module, after the notice that the whole adjustments being further used for receiving NFC match control module terminate, carries out one_to_one corresponding by the match circuit information of record and SIM card information, and preserves.
9. self-reacting device according to claim 8, it is characterized in that, described NFC match control module, also swipe the card after state for entering NFC in terminal further, notice access module reading SIM card information, and receive access module preserve the notice of the match circuit information corresponding with SIM card information after, directly match circuit is set according to the match circuit information of the described correspondence recorded in access module;
Described access module, further also for reading SIM card information, self find preserve the match circuit information corresponding with described SIM card information time, notice NFC match control module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110273236.9A CN103001670B (en) | 2011-09-15 | 2011-09-15 | A kind of adaptive approach of terminal NFC coupling and device |
| PCT/CN2011/083950 WO2013037174A1 (en) | 2011-09-15 | 2011-12-14 | Self-adaptive method and device for nfc match of terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110273236.9A CN103001670B (en) | 2011-09-15 | 2011-09-15 | A kind of adaptive approach of terminal NFC coupling and device |
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| CN103001670A CN103001670A (en) | 2013-03-27 |
| CN103001670B true CN103001670B (en) | 2016-03-30 |
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| CN103491655A (en) * | 2013-09-30 | 2014-01-01 | 深圳前海君浩银通科技发展有限公司 | Multi-mode communication system and method between terminal devices |
| CN105519004B (en) * | 2013-10-01 | 2018-04-13 | 英特尔公司 | For promoting the method, apparatus and system of the hybrid communications between equipment |
| CN108055089B (en) * | 2017-12-14 | 2021-01-22 | 中兴通讯股份有限公司 | Method and device for determining working frequency of NFC device |
| KR102288610B1 (en) * | 2017-12-19 | 2021-08-10 | 삼성전자주식회사 | Radio frequency setting system and mobile device |
| CN112952385A (en) * | 2021-01-27 | 2021-06-11 | 维沃移动通信有限公司 | NFC antenna device, control method and device |
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| CN201898506U (en) * | 2010-11-11 | 2011-07-13 | 东莞宇龙通信科技有限公司 | Mobile phone with NFC (near field communication) function and NFC antenna thereof |
| CN102158236A (en) * | 2011-04-11 | 2011-08-17 | 中兴通讯股份有限公司 | Near field communication (NFC) dual-mode mobile terminal and communication method thereof |
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- 2011-09-15 CN CN201110273236.9A patent/CN103001670B/en active Active
- 2011-12-14 WO PCT/CN2011/083950 patent/WO2013037174A1/en active Application Filing
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| US20090212917A1 (en) * | 2008-02-26 | 2009-08-27 | Wei Chang | Wireless communication apparatus and method thereof |
| CN201209234Y (en) * | 2008-06-06 | 2009-03-18 | 邢台市政建设集团有限公司 | Ragging and joint-cutting dual-purpose machine for concrete pavement |
| CN201898506U (en) * | 2010-11-11 | 2011-07-13 | 东莞宇龙通信科技有限公司 | Mobile phone with NFC (near field communication) function and NFC antenna thereof |
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| CN103001670A (en) | 2013-03-27 |
| WO2013037174A1 (en) | 2013-03-21 |
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