CN103577862B - Biface user identification device and mobile terminal - Google Patents
Biface user identification device and mobile terminal Download PDFInfo
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- CN103577862B CN103577862B CN201210259906.6A CN201210259906A CN103577862B CN 103577862 B CN103577862 B CN 103577862B CN 201210259906 A CN201210259906 A CN 201210259906A CN 103577862 B CN103577862 B CN 103577862B
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Abstract
The invention discloses a kind of biface user identification device and mobile terminal.The biface user identification device includes：Contactless antenna, contactless chip, subscriber identification module, adjustable condenser, control circuit；When contactless antenna receives extraneous electromagnetic signals, generation induced voltage, to provide work capacity for contactless chip progress contactless operation；Contactless antenna is in parallel with adjustable condenser, forms resonance circuit；The capacitance adjustment variable quantity that control circuit inputs according to user, the capacitance of adjustable condenser is adjusted, to cause the difference of the resonant frequency of the resonant frequency of resonance circuit and extraneous electromagnetic signals in predetermined scope.Scheme provided by the present invention enables biface user identification device and the resonant frequency of different card reader to be adapted, so that biface user identification device can carry out normal contactless operation in different card reader.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of biface user identification device and mobile terminal.
Background technology
In recent years, as the growth of mobile communication subscriber and the popularization of mobile terminal, the more next mobile terminal read are used
Family wants to use mobile terminal, such as mobile phone, to realize the application for closely paying or swiping the card.Double interface user's identification moulds
Block（Subscriber Identity Module, SIM）Also known as double-interface SIM card provides solution for this kind of application.
Double-interface SIM card can support contact and contactless two working interfaces, and double-interface SIM card is inserted into movement
In SIM card slot in terminal：Contact working interface realizes traditional SIM card application, there is provided mobile communication function；It is non-contact
Formula working interface realizes the application of cordless, such as under the small amount payment environment of the near field such as public transport, convenience store, market, leads to
Cross mobile terminal and realize cCredit card payment, or used as access card.Daily work of the double-interface SIM card to mobile communication subscriber
Work, life bring great convenience, and receive the welcome of user.
Double-interface SIM card non-contact operation interface is the vibration formed by contactless antenna, contactless chip
The card reader in loop and the external world interacts to realize.When the resonant frequency of oscillation circuit in double-interface SIM card and card reader electricity
When the resonant frequency in magnetic field oscillation loop is equal, oscillation circuit and the card reader oscillation circuit of double-interface SIM card produce resonance, make
It is maximum to obtain current value caused by card reader antenna coil, so that caused induced voltage on double-interface SIM card aerial coil
Also maximum is reached.The voltage is used to be supplied to contactless chip, to drive contactless chip in optimal working condition
It is lower to complete corresponding contactless operation.
However, all kinds of card reader interacted with double-interface SIM card are possibly different from, the resonant frequency phase of these card reader
For the resonant frequency of double-interface SIM card oscillation circuit, have it is higher, have it is relatively low, this will cause carry out it is non-contact
In the formula course of work, possibly resonance can not occur between double-interface SIM card and card reader, so that double-interface SIM card can not be
Worked under optimum state, occur paying or swiping the card mistake.For example, the resonant frequency of SIM card standard is 13.56Mhz, when both sides are humorous
When vibration frequency difference reaches 1-2Mhz, it is difficult to carry out correct Card Reader.When the resonant frequency difference on both sides is too big, not even
Enough voltage driving contactless chips can be provided and complete corresponding operation, double-interface SIM card will be caused not carry out non-
Contact operates.
The content of the invention
One side according to embodiments of the present invention, a technical problem to be solved are：A kind of double interfaces are provided to use
Family identification device and mobile terminal, to cause the resonant frequency of double-interface SIM card to can adapt to the resonance frequency in different card reader
Rate.
A kind of biface user identification device provided in an embodiment of the present invention, including：Contactless antenna, contactless core
Piece, subscriber identification module, adjustable condenser, control circuit；
The subscriber identification module is used in accessing mobile communication network, there is provided user identification information；
The contactless antenna is connected with the contactless chip, when the contactless antenna receives external electrical
Magnetic signal, induced voltage is produced, work capacity is provided to carry out contactless operation for the contactless chip；
The contactless antenna is in parallel with the adjustable condenser, forms resonance circuit；
The control circuit is used for the capacitance adjustment variable quantity inputted according to user, to the capacitance of the adjustable condenser
It is adjusted, to cause the humorous of extraneous electromagnetic signals that the resonant frequency of the resonance circuit receives with the contactless antenna
The difference of vibration frequency is in predetermined scope.
The embodiment of the present invention additionally provides a kind of mobile terminal, including：Contactless antenna, double interface user's identifications dress
Put；
Shown biface user identification device includes contactless chip, subscriber identification module, adjustable condenser, control electricity
Road；
The subscriber identification module is used in accessing mobile communication network, there is provided user identification information；
Two interfaces at the contactless antenna both ends are connected with two contacts in the subscriber identification module respectively
Connecing, the contactless antenna is connected by the integrated circuit of the subscriber identification module with the contactless chip, when
The contactless antenna receives extraneous electromagnetic signals, produces induced voltage, and it is non-contact to think that the contactless chip is carried out
Formula operation provides work capacity；
The contactless antenna is in parallel with the adjustable condenser, forms resonance circuit；
The control circuit is used for the capacitance adjustment variable quantity inputted according to user, to the capacitance of the adjustable condenser
It is adjusted, to cause the humorous of extraneous electromagnetic signals that the resonant frequency of the resonance circuit receives with the contactless antenna
The difference of vibration frequency is in predetermined scope.
Based on the above embodiment of the present invention provide biface user identification device and mobile terminal, contactless antenna with
Adjustable condenser is in parallel, and the capacitance of adjustable condenser is adjusted by control circuit so that contactless antenna with
The resonant frequency for the extraneous electromagnetic signals that the resonant frequency that adjustable condenser forms resonance circuit receives with contactless antenna
Difference can in predetermined scope, therefore, the resonant frequency of biface user identification device can neatly from different Card Readers
Device resonant frequency is adapted, it is ensured that normal contactless operation can be carried out in different card reader.In addition, increased can
It is simple to adjust electric capacity, controling circuit structure, original circuit design is changed less, cost of implementation is relatively low.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The accompanying drawing of a part for constitution instruction describes embodiments of the invention, and is used to solve together with the description
Release the principle of the present invention.
Referring to the drawings, according to following detailed description, the present invention can be more clearly understood, wherein：
Fig. 1 show double interface subscriber identification module cards in the prior art complete the operation principle of contactless operations etc.
Imitate circuit diagram；
Fig. 2 shows the equivalent circuit diagram after equivalent circuit diagram is simplified shown in Fig. 1；
Fig. 3 shows a kind of structural representation of embodiment of biface user identification device provided by the present invention；
Fig. 4 shows a kind of equivalent circuit diagram of embodiment of biface user identification device provided by the present invention；
Fig. 5 shows the structural representation of another embodiment of biface user identification device provided by the invention；
Fig. 6 shows the structural representation of biface user identification device another embodiment provided by the invention；
Fig. 7 shows the structural representation of biface user identification device another embodiment provided by the invention；And
Fig. 8 shows a kind of structural representation of embodiment of mobile terminal provided by the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It should note
Anticipate and arrive：Unless specifically stated otherwise, the part and the positioned opposite of step otherwise illustrated in these embodiments does not limit this hair
Bright scope.
The description only actually at least one exemplary embodiment is illustrative to be never used as to the present invention below
And its application or any restrictions that use.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the premise of the property made work, belongs to the scope of protection of the invention.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
Shown in Figure 1, Fig. 1 shows that double interface subscriber identification module cards complete contactless operation in the prior art
The equivalent circuit diagram of operation principle.In Fig. 1, CICFor subscriber identification module input capacitance, RICElectricity is inputted for subscriber identification module
Resistance, VLA-LBFor subscriber identification module inductive drop, RConFor subscriber identification module encapsulating material resistance, CConFor subscriber identification module
Encapsulating material electric capacity.CpcFor contactless antenna electric capacity, RpcFor contactless antenna resistance, LpcFor contactless antenna inductance.
Shown in Figure 2, Fig. 2 shows the equivalent circuit diagram after equivalent circuit diagram is simplified shown in Fig. 1.Due to generally using
Metal material resistance very little in the identification module encapsulating material of family, i.e. RConValue very little, therefore, whole resonance circuit can be with
It is reduced to equivalent circuit as shown in Figure 2.Wherein, LpcFor contactless antenna inductance, CplFor the equivalent capacity after simplification, its
Calculation formula is：
Cpl=CIC+CCon+Cpc
RplFor the equivalent resistance after simplification, calculation formula is：
The resonant frequency of equivalent circuit after simplification, calculation formula are as follows：
Formula is calculated according to above-mentioned resonant frequency, the resonant frequency of resonance circuit simplified after equivalent capacity, non-connect
Two parameters of the touch inductance influence.The equivalent electric perhaps contactless antenna inductance of regulation resonance circuit can be realized to humorous
The regulation for circuit resonant frequencies of shaking.In embodiment provided by the present invention, by adjusting the equivalent capacity of resonance circuit, come real
Now to the regulation of the resonant frequency of whole resonance circuit.Specifically, can increase adjustable electric capacity over the resonant circuit
Realize the regulation to equivalent capacity.Specific embodiment is described below.
Shown in Figure 3, Fig. 3 is a kind of structural representation of embodiment of biface user identification device provided by the invention
Figure.The biface user identification device includes：Contactless antenna 301, contactless chip 302, subscriber identification module 303,
Adjustable condenser 304, control circuit 305.
Subscriber identification module 303 is used in accessing mobile communication network, there is provided user identification information.
Contactless antenna 301 is connected with contactless chip 302, when contactless antenna 301 receives external electromagnetic
Signal, produces induced voltage, and induced voltage carries out contactless operation for contactless chip 302 and provides work capacity.Ability
Field technique personnel should be understood that contactless chip 302 can have different computing capability or information according to different applications
Handling process, for example, after work capacity is used as after obtaining induced voltage, calculated or data processing, and by non-contact
Formula antenna 301 sends the information after calculating or handling.
Contactless antenna 301 is in parallel with adjustable condenser 304.It is non-to connect according to foregoing described simple equivalent circuit
Touch antenna 301 forms resonance circuit with adjustable condenser 304.The capacitance adjustment that control circuit 305 inputs according to user changes
Amount, the capacitance of adjustable condenser 304 is adjusted, to cause the resonant frequency of resonance circuit and contactless antenna 301
The difference of the resonant frequency of the extraneous electromagnetic signals of reception is in predetermined scope.
Adjusted by the capacitance of 305 pairs of adjustable condensers 304 being in parallel with contactless antenna 301 of control circuit
Section so that the difference of the resonant frequency of the resonance circuit after simplifying and the resonant frequency of card reader electromagnetic signal can be predetermined
In the range of, so that the resonance frequency that the resonant frequency of biface user identification device can neatly from different card reader
Rate is adapted, it is ensured that normally non-connect can also be carried out in different card reader using same biface user identification device
Touch operates.
Make biface user identification device and card reader that there is identical it is highly preferred that adjustable condenser 304 can be adjusted
Resonant frequency, so that biface user identification device produces resonance with card reader, now, caused by card reader antenna coil
Current value is maximum, so as to which caused induced voltage reaches maximum on the contactless antenna of biface user identification device,
To drive contactless chip to complete corresponding contactless operation under optimal working condition.
The position of contactless antenna 301 is set to be merely exemplary ground, specifically, contactless antenna shown in Fig. 3
301 can be arranged in subscriber identification module 303, or outside subscriber identification module 303.
Shown in Figure 4, Fig. 4 shows a kind of the equivalent of embodiment of biface user identification device provided by the present invention
Circuit diagram.In the equivalent circuit diagram shown in Fig. 4, adjustable condenser CadjConnect over the resonant circuit, the equivalent capacity after simplifying
For：
Cpl=CIC+CCon+CPC+Cadj
Adjustable condenser CadjThe scope of capacitance regulation is Cadj-min~Cadj-max, accordingly, in simplified equivalent circuit
CplValue also respective change, thus, cause the resonant frequency of resonance circuit after simplifying to change, the excursion of resonant frequency
For：
Therefore, the capacitance of suitable adjustable condenser is selected, the capacitance of adjustable condenser is entered by control circuit
Row regulation so that what the resonant frequency of contactless antenna and adjustable condenser formation resonance circuit received with contactless antenna
The difference of the resonant frequency of extraneous electromagnetic signals can be in predetermined scope so that the resonant frequency and card reader of resonance circuit
Resonant frequency be adapted, so that it is guaranteed that preferable contactless operation.In actual use, the ring of swiping the card of each user
Border is generally relatively fixed, therefore generally need to be only directed to card reader and be carried out disposable adaptation regulation, afterwards without continually pair can
Regulation electric capacity is adjusted.
Subscriber identification module in each embodiment of biface user identification device of the present invention can include client and identify mould
Block（Subscriber Identity Module, SIM）, micro- Micro SIM, Nano SIM, subscriber identity module（Use
Identity Module, UIM), Global Subscriber identification (Universal Subscriber Identity Module, USIM),
Personal identifier module（Personal Identity Model, PIM）In any one.
Contactless antenna in each embodiment of biface user identification device of the present invention is RFID antenna, contactless
Chip is RFID chip or other non-contact type wireless communication technologys, such as near-field communication（Near Field
Communication, NFC）.
, can be with according to connected mode different between contactless antenna, contactless chip and subscriber identification module
Above-mentioned biface user identification device is realized using different embodiments.Subscriber identification module in following examples
Exemplarily illustrated so that RFID antenna, contactless chip are RFID chip as an example by SIM, contactless antenna.Following double
In the customer identification device embodiment of interface, mainly to the company between subscriber identification module, contactless antenna and adjustable condenser
The relation of connecing stressed, other units not illustrated or module, such as control circuit, is referred in Fig. 3 embodiments
Description.
Shown in Figure 5, Fig. 5 shows the structure of another embodiment of biface user identification device provided by the invention
Schematic diagram.It is unrestricted according to the embodiment specific example, two interfaces at RFID antenna both ends respectively with SIM card
Two contacts be connected, RFID antenna is connected and is in communication with each other with RFID chip by the integrated circuit of SIM card, with
Complete various RFID operations.
RFID chip can integrate on the sim card, and RFID chip is not shown in FIG. 5.Contact in SIM card
（contact）It is to maintain integrated circuit modules and external interface device carries out the connection member of electrical connection and signal transmission.This
The contact invented in each embodiment in SIM card can be the C4 contacts and C8 contacts retained, can also be entered using other contacts
Row connection.
The capacitance for the adjustable condenser being in parallel by control circuit pair with RFID antenna is adjusted so that by RFID
The difference of the resonant frequency for the simplification resonance circuit that antenna and adjustable condenser are formed and the resonant frequency of RFID card reader can be with
In predetermined scope, so as to realize extraneous RFID card reader and the contactless operation in double-interface SIM card.
The capacitance adjustment variable quantity of user's input can be there are ways to realize, one way in which can utilize use
Family identification module application tool（SIM TOOL KIT, STK）.Exemplarily, double interface users know in a kind of specific embodiment
Other device can also include：User input unit, for the user input interface provided by STK, receive the electricity that user inputs
Hold regulation variable quantity, and capacitance adjustment variable quantity is supplied to control circuit.STK can provide STK menus on the display screen
Option, selected for user or input specific capacitance adjustment variable quantity, exemplarily, can select to tune up electric capacity in a menu
Or turn down, give tacit consent to settable multiple grades, often adjust and once just increase or reduce a grade.STK inputs in response to user
Capacitance adjustment variable quantity, utilize the interface of control circuit, there is provided to control circuit, inputted by control circuit according to the user
Capacitance adjustment variable quantity, the capacitance of adjustable condenser is adjusted.
Shown in Figure 6, Fig. 6 shows the structure of biface user identification device another embodiment provided by the invention
Schematic diagram.Unrestricted according to the embodiment specific example, subscriber identification module is operably coupling in mobile whole
In end, RFID antenna can be wholely set with mobile terminal.Distinguished with the embodiment shown in Fig. 5, RFID antenna is encapsulated in
On mobile terminal, by taking mobile phone as an example, RFID antenna covers after being encapsulated in mobile phone, can also antenna and battery of mobile phone it
Between increase the material of electromagnetism interference to shield interference of the battery to antenna.Simultaneously by C4, C8 pin of subscriber identification module card
Two contacts are drawn to Mobile terminal main board, are connected for the RFID antenna with bonnet, so as to realize RFID antenna with moving
Dynamic terminal is wholely set.
Biface user identification device shown in Fig. 6 can also include capacitance adjustment and switch, not shown in Fig. 6.Electric capacity
Adjusting switch is used for the capacitance adjustment variable quantity for receiving user's input, and capacitance adjustment variable quantity is supplied into control circuit, by
The capacitance adjustment variable quantity that control circuit inputs according to the user, the capacitance of adjustable condenser is adjusted.It can move
Set external capacitance adjustment to switch in dynamic terminal, such as covered after being arranged on mobile terminal, select or input to have for user
The capacitance adjustment variable quantity of body.
Shown in Figure 7, Fig. 7 shows the structure of biface user identification device another embodiment provided by the invention
Schematic diagram.It is unrestricted according to the embodiment specific example, two interfaces at contactless antenna both ends respectively with it is non-
Two pins of contact chip are connected.Compared with embodiment in Fig. 5, Fig. 6, RFID antenna and RFID chip in Fig. 7
It is joined directly together and connects, and contactless antenna is encapsulated in subscriber identification module with contactless chip.
With embodiment in Fig. 5 similarly, it is single can also to include user's input for the biface user identification device shown in Fig. 7
Member, for the user input interface provided by STK, the capacitance adjustment variable quantity of user's input is received, and capacitance adjustment is become
Change amount is supplied to control circuit, the capacitance adjustment variable quantity inputted by control circuit according to the user, to the electricity of adjustable condenser
Capacitance is adjusted.
Shown in Figure 8, Fig. 8 shows a kind of structural representation of embodiment of mobile terminal provided by the present invention.Should
Mobile terminal includes contactless antenna 801, biface user identification device 800.
Biface user identification device 800 includes contactless chip 802, subscriber identification module 803, adjustable condenser
804th, control circuit 805.
Subscriber identification module 803 is used in accessing mobile communication network, there is provided user identification information.
Two interfaces at the both ends of contactless antenna 801 are connected with two contacts in subscriber identification module 803 respectively,
Contactless antenna 801 is connected by the integrated circuit of subscriber identification module with contactless chip 802, when contactless day
Line 801 receives extraneous electromagnetic signals, produces induced voltage, and work is provided to carry out contactless operation for contactless chip 802
Make energy.
Contactless antenna 801 is in parallel with adjustable condenser 804.Contactless antenna 801 is formed with adjustable condenser 804
Resonance circuit.
Control circuit 805 is used for the capacitance adjustment variable quantity inputted according to user, and the capacitance of adjustable condenser 804 is entered
Row regulation, to cause the resonant frequency of resonance circuit and the resonant frequency of the extraneous electromagnetic signals of the reception of contactless antenna 801
Difference in predetermined scope.
The mobile terminal provided based on the above embodiment of the present invention, pass through 805 pairs of control circuit and contactless antenna 801
The capacitance for the adjustable condenser 804 being in parallel is adjusted so that contactless antenna 801 is formed with adjustable condenser 804
The difference of the resonant frequency for the extraneous electromagnetic signals that the resonant frequency of resonance circuit receives with contactless antenna 801 can be pre-
In fixed scope, so that the mobile terminal with double interface subscriber identification modules can be from the resonance of different card reader
Frequency is adapted, it is ensured that normal contactless operation can be carried out in different card reader.
So far, a kind of biface user identification device and mobile terminal according to the present invention is described in detail.In order to
The design of the masking present invention is avoided, does not describe some details known in the field.Those skilled in the art are according to above
Description, completely it can be appreciated how implementing technical scheme disclosed herein.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and its
The difference of its embodiment, same or analogous part cross-reference between each embodiment.It is real for mobile terminal
For applying example, because it is substantially corresponding with section Example in biface user identification device, so fairly simple, the phase of description
Part is closed referring to the part of biface user identification device embodiment to illustrate.
The biface user identification device and mobile terminal of the present invention may be achieved in many ways.For example, it can pass through
Software, hardware, firmware or software, hardware, firmware any combinations come realize the present invention method and system.For the side
The said sequence of the step of method is not limited to described in detail above suitable merely to illustrate, the step of method of the invention
Sequence, unless specifically stated otherwise.In addition, in certain embodiments, the present invention can be also embodied as being recorded in record Jie
Program in matter, these programs include being used for the machine readable instructions for realizing the method according to the invention.Thus, the present invention is also covered
Lid storage is used for the recording medium for performing the program of the method according to the invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel it should be understood that above example merely to illustrating, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (9)
1. a kind of biface user identification device, including：It is contactless antenna, contactless chip, subscriber identification module, adjustable
Economize on electricity appearance, control circuit and user input unit；
The subscriber identification module is used in accessing mobile communication network, there is provided user identification information；
The contactless antenna is connected with the contactless chip, when the contactless antenna receives external electromagnetic letter
Number, induced voltage is produced, work capacity is provided to carry out contactless operation for the contactless chip；
The contactless antenna is in parallel with the adjustable condenser, and the both ends of the adjustable condenser connect user's identification respectively
Two contacts in module, form resonance circuit；
The user input interface that the user input unit is provided by subscriber identification module application tool STK, it is defeated to receive user
The capacitance adjustment variable quantity entered, and the capacitance adjustment variable quantity is supplied to the control circuit；
The control circuit is used for the capacitance adjustment variable quantity inputted according to user, and the capacitance of the adjustable condenser is carried out
Regulation, it is and described non-to cause resonant frequency of the resonant frequency of the resonance circuit neatly from different card reader to be adapted
The difference of the resonant frequency for the extraneous electromagnetic signals that contact antenna receives is in predetermined scope.
2. device according to claim 1, it is characterised in that the contactless antenna and the contactless chip phase
Connection includes：
Two interfaces at the contactless antenna both ends are connected with two contacts in the subscriber identification module respectively, institute
Contactless antenna is stated by the integrated circuit of the subscriber identification module with the contactless chip to be connected.
3. device according to claim 2, it is characterised in that the subscriber identification module is operably coupling in movement
In terminal, the contactless antenna is wholely set with the mobile terminal.
4. device according to claim 3, it is characterised in that described device also includes capacitance adjustment and switched, for receiving
The capacitance adjustment variable quantity of user's input, and the capacitance adjustment variable quantity is supplied to the control circuit.
5. device according to claim 1, it is characterised in that the contactless antenna and the contactless chip phase
Connection includes：Two interfaces at the contactless antenna both ends are connected with two pins of the contactless chip respectively
Connect.
6. according to the device described in Claims 1-4 any one, it is characterised in that the contact is respectively C4 contacts and C8
Contact.
7. according to the device described in claim 1 to 5 any one, it is characterised in that the subscriber identification module includes client
Identification module SIM, micro- Micro SIM, Nano SIM, subscriber identity module UIM, Global Subscriber identification USIM, personal identification mould
Any one in block PIM cards.
8. according to the device described in claim 1 to 5 any one, it is characterised in that contactless antenna is RFID antenna, institute
It is RFID chip to state contactless chip.
9. a kind of mobile terminal, including：Contactless antenna, biface user identification device；
Shown biface user identification device include contactless chip, subscriber identification module, adjustable condenser, control circuit and
User input unit；
The subscriber identification module is used in accessing mobile communication network, there is provided user identification information；
Two interfaces at the contactless antenna both ends are connected with two contacts in the subscriber identification module respectively, institute
State contactless antenna by the integrated circuit of the subscriber identification module with the contactless chip to be connected, when described non-
Contact antenna receives extraneous electromagnetic signals, produces induced voltage, thinks that the contactless chip carries out contactless operation
Work capacity is provided；
Contactless antenna is in parallel with the adjustable condenser, and the both ends of the adjustable condenser connect subscriber identification module respectively
On two contacts, formed resonance circuit；
The user input interface that the user input unit is provided by subscriber identification module application tool STK, it is defeated to receive user
The capacitance adjustment variable quantity entered, and the capacitance adjustment variable quantity is supplied to the control circuit；
The control circuit is used for the capacitance adjustment variable quantity inputted according to user, and the capacitance of the adjustable condenser is carried out
Regulation, it is and described non-to cause resonant frequency of the resonant frequency of the resonance circuit neatly from different card reader to be adapted
The difference of the resonant frequency for the extraneous electromagnetic signals that contact antenna receives is in predetermined scope.
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| CN201210259906.6A CN103577862B (en) | 2012-07-25 | 2012-07-25 | Biface user identification device and mobile terminal |
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| CN201210259906.6A CN103577862B (en) | 2012-07-25 | 2012-07-25 | Biface user identification device and mobile terminal |
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| CN104135572B (en) * | 2014-08-13 | 2016-04-06 | 华东理工大学 | SIM card wireless communication system and be applied to the communication means of SIM card wireless communication system |
| CN104182740A (en) * | 2014-09-01 | 2014-12-03 | 东南大学 | Identity authentication system based on capacitive sensing technology |
| CN105446213A (en) * | 2015-11-27 | 2016-03-30 | 成都聚汇才科技有限公司 | Intelligent digital strain ammeter control system for resonant signal identification circuit |
| CN105406888B (en) * | 2015-12-21 | 2019-02-26 | 捷德（中国）信息科技有限公司 | A method of adjustment antenna for mobile phone working frequency |
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| CN101237690A (en) * | 2007-02-02 | 2008-08-06 | 中国移动通信集团公司 | Dual interface SIM card |
| CN201388229Y (en) * | 2009-02-13 | 2010-01-20 | 恩门科技股份有限公司 | Module structure for expanding and strengthening SIM card function |
| CN102118175A (en) * | 2009-12-30 | 2011-07-06 | 中兴通讯股份有限公司 | Antenna matching circuit and implementation method of close-range wireless communication |
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| Publication number | Publication date |
|---|---|
| CN103577862A (en) | 2014-02-12 |
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