CN106358179A - SIM (Subscriber Identification Module) card switching circuit and SIM card switching method - Google Patents
SIM (Subscriber Identification Module) card switching circuit and SIM card switching method Download PDFInfo
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- CN106358179A CN106358179A CN201610882204.1A CN201610882204A CN106358179A CN 106358179 A CN106358179 A CN 106358179A CN 201610882204 A CN201610882204 A CN 201610882204A CN 106358179 A CN106358179 A CN 106358179A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/183—Processing at user equipment or user record carrier
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Abstract
The invention provides an SIM (Subscriber Identification Module) card switching circuit and an SIM card switching method. The SIM card switching circuit is applied to an intelligent terminal which is provided with a plurality of SIM cards, wherein the plurality of SIM cards have NFC (Near Field Communication) functions; and the SIM card switching circuit is characterized by comprising a power input module, a key input module, a master chip, an NFC chip, a control signal module and a switch chip, wherein the NFC chip comprises an interruption control interface, the switch chip comprises a power input interface, a key input interface, a first output interface, a second output interface and a control signal input interface, the power input module is connected with the power input interface of the switch chip, the key input module is connected with the key input interface, the interruption control interface is connected with the first output interface, the master chip is connected with the second output interface, and the control signal module is connected with the control signal input interface. According to the SIM card switching circuit provided by the invention, SIM cards can be switched in a power-off state.
Description
Technical field
The present invention relates to moving communicating field, more particularly, to a kind of switching circuit of client identification module sim card and
Changing method.
Background technology
At present, there is the intelligent terminal of near-field communication technology (near field communication, nfc) increasingly
Many, nfc function is divided into snap gauge simulation models, card reader pattern, ad hoc mode.
1st, snap gauge simulation models (card emulation): during this pattern, mobile phone is equivalent to using RF identification (radio
Frequency identification, rfid) technology integrated circuit (integrated circuit, ic) card.Can replace
For substantial amounts of ic card, including the credit card, market shopping card, mass transit card, subway card, gate inhibition's control, ticket, admission ticket etc..
2nd, ad hoc mode (p2p mode): this pattern and infrared ray almost, can be used for data exchange, simply transmission distance
From shorter, transmission establishment speed, transmission speed is also quicker, low in energy consumption.By two linking of devices possessing nfc function, energy
Realize data point-to-point transmission, such as down-load music, exchange picture or synchronizer address book.Therefore pass through nfc, multiple equipment
As can swap date or service between digital still camera, palm PC, computer and intelligent terminal.
3rd, card reader pattern (reader/writer mode): use as contactless card reader, such as from poster or
Relevant information is read on Exhibition Information electronic tag.
Intelligent terminal nfc supports above-mentioned three kinds of functions under bright screen state, but go out screen or off-mode only support
Snap gauge simulation models.
Commmunication company has been proposed sim (the subscriber identification with nfc function at present
Module, client identification module) card.What the sim card that the present invention mentions referred to is all the specific cards with nfc function, applies at present
More is exactly to replace mass transit card using sim card.The intelligent terminal with the sim card of mass transit card function for the insertion achieves that public transport
Card function, and intelligent terminal can swipe the card under on-off state.When two cards of insertion have nfc function, and there is one
Card occurs could switch to an other card payment during dysfunction (Sorry, your ticket has not enough value when including to swipe the card or applying).
Existing intelligent terminal has had the scheme that can support double sim cards, but current double card scheme is only supported opening
Machine state carries out sim card handoff functionality, the sim card selecting before can only being defaulted as after shutdown shutting down, cannot be again to sim after shutdown
Card is selected and is switched, and seriously limits user and selects.
Content of the invention
The invention provides a kind of switching circuit of sim card and changing method, to solve present in prior art, intelligence
The problem that again sim card cannot be switched over after terminal closedown.
In order to solve the above problems, the invention discloses a kind of switching circuit of sim card, it is applied to intelligent terminal, described
Intelligent terminal has multiple sim cards, and multiple sim cards described have nfc function, and described switching circuit includes: Power Entry Module,
Keyboard input module, master chip, nfc chip, control signal module and switch chip；Described nfc chip includes interrupting control
Interface；Described switch chip includes: power input interface, key-press input interface, the first output interface, the second output interface, control
Signal input interface processed；Described power input connects the described power input interface of described switch chip, described key-press input mould
Block connects described key-press input interface, and described interruption control interface connects described first output interface, and described master chip connects institute
State the second output interface, described control signal module connects described control signal input interface.
In order to solve the above problems, the invention also discloses a kind of changing method of client identification module sim card, it is applied to
In the sim card switching circuit of intelligent terminal, described intelligent terminal has multiple sim cards, and multiple sim cards described have nfc function,
Methods described includes: the control signal input interface of described switch chip receives control signal；Described switch chip is according to described
Control signal determines the working condition of described switch chip output interface；The key-press input interface of described switch chip, receive by
The push button signalling of external key triggering；According to the working condition of described output interface, described push button signalling is exported to corresponding core
Piece；When nfc chip receives described push button signalling, the mode of operation of sim card is switched over.
Compared with prior art, the invention has the advantages that
A kind of switching circuit of sim card provided in an embodiment of the present invention and changing method, are provided by the embodiment of the present invention
Sim card switching circuit, intelligent terminal can detect in the power-offstate external key triggering push button signalling, and pass through this
Signal switches over to sim, thus realizing the switching to sim card in the power-offstate.
Brief description
Fig. 1 is a kind of structural representation of sim card switching circuit of the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of steps of sim card changing method of the embodiment of the present invention three；
Fig. 3 is a kind of flow chart of steps of sim card changing method of the embodiment of the present invention four.
Specific embodiment
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to be able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Embodiment one
With reference to Fig. 1, show a kind of structural representation of the switching circuit of sim card of the embodiment of the present invention one.
The switching circuit of the sim card of the embodiment of the present invention, is applied to intelligent terminal, and described intelligent terminal has multiple sim
Card, multiple sim cards described have nfc function, and described switching circuit includes:
Power input 101, keyboard input module 102, master chip 103, nfc chip 104, control signal module 105 and
Switch chip 106.
Nfc chip 104 includes interrupting control interface 1041；Switch chip includes 106: power input interface 1061, button
Input interface 1062, the first output interface 1063, the second output interface 1604, control signal input interface 1065.
Preferably, control signal module includes gpio signaling interface 1051, divider resistance 1052.
The power input interface 1061 of power input 101 connecting valve chip 106, keyboard input module 102 connects button
Input interface 1062, interrupts control interface 1041 and connects the first output interface 1063, master chip 103 connects the second output interface
1064, control signal module 105 connection control signal input interface 1065.
By the switching circuit of sim card provided in an embodiment of the present invention, intelligent terminal can detect outer in the power-offstate
The push button signalling of portion's button triggering, and by this signal, sim is switched over, thus realizing in the power-offstate to sim card
Switching.
Embodiment two
Still with reference to Fig. 1, show a kind of structural representation of the switching circuit of sim card of the embodiment of the present invention two.
The switching circuit of the sim card of the embodiment of the present invention, is applied to intelligent terminal, and described intelligent terminal has multiple sim
Card, multiple sim cards described have nfc function, and described switching circuit includes:
Power input 101, keyboard input module 102, master chip 103, near-field communication nfc chip 104, control signal module
105 and switch chip 106.
Nfc chip 104 includes interrupting control interface 1041；Switch chip includes 106: power input interface 1061, button
Input interface 1062, the first output interface 1063, the second output interface 1604, control signal input interface 1065.
Preferably, control signal module includes gpio signaling interface 1051, divider resistance 1052.
The power input interface 1061 of power input 101 connecting valve chip 106, keyboard input module 102 connects button
Input interface 1062, interrupts control interface 1041 and connects the first output interface 1063, master chip 103 connects the second output interface
1064, control signal module 105 connection control signal input interface 1065.
Keyboard input module 102 includes: external key 1021, for triggering push button signalling.
Preferably, external key includes: volume plus key and/or volume down key.
The control signal that control signal module 105 produces is the universal input/output gpio signal of intelligent terminal's processor,
Gpio signal is high level signal in start, the gpio power down in shutdown, and control signal is pulled to low electricity by divider resistance 1052
Ordinary mail number；Switch chip 106, according to control signal, selects by the first output interface 1063 or the second output interface 1064 as defeated
Outgoing interface.
When intelligent terminal is in off-mode, control signal input interface 1065 receives low level signal, switch chip 106
Select the first output interface 1063 as output interface；When intelligent terminal is in open state, control signal input interface 1065
Receive high level signal, switch chip 106 selects the second output interface 1064 as output interface.
When interruption control interface 1041 detects the signal of the first output interface 1063 input, according to the signal receiving
Nfc chip is carried out with the switching of sim card.
A kind of sim card switching circuit provided in an embodiment of the present invention, except the sim card switching circuit having in embodiment one
Had the advantage that outer, also by the gpio signal of terminal cpu, according to the on-off state of terminal, controlling switch chip
The unlatching of output interface and off-state, thus push button signalling can be transferred to different chips according to on-off state by terminal carry out
Corresponding operation.
Embodiment three
With reference to Fig. 2, the flow chart showing a kind of sim card changing method of the embodiment of the present invention three.
The sim card changing method of the embodiment of the present invention, is applied in the sim card switching circuit of intelligent terminal, described intelligence
Terminal has multiple sim cards, and multiple sim cards described have nfc function, the method comprising the steps of:
Step 301: the control signal input interface of switch chip receives control signal.
In the power-offstate, power input is always after switch chip powers, so that switch chip can be in the situation of shutdown
Still realize down sim card handoff functionality.
Step 302: switch chip determines the working condition of switch chip output interface according to control signal.
Wherein, control signal be terminal handler gpio (general purpose input output, general defeated
Enter/export) signal.
When intelligent terminal is in open state, gpio signal is high level signal, and the first output interface disconnects, the second output
Interface output key signal input is to master chip；When intelligent terminal is in off-mode, gpio signal is low level signal, first
Output interface is opened, and the second output interface disconnects；Wherein, the first output interface is used for output key signal to nfc chip interrupt
Control interface.
Step 303: the key-press input interface of switch chip, receive the push button signalling being triggered by external key.
Preferably, external key includes: volume plus key and/or volume down key.
Step 304: according to the working condition of output interface, push button signalling is exported to corresponding chip.
When intelligent terminal is in open state, application program is carried by terminal sim is switched over, master chip receives
During to push button signalling, execute external key original function；When intelligent terminal is in off-mode, the control of nfc chip interrupt connects
When mouth detects push button signalling, switch sim card according to push button signalling.
Step 305: when nfc chip receives push button signalling, the mode of operation of sim card is switched over.
When intelligent terminal is in off-mode, nfc chip passes through the first output interface and receives push button signalling, and according to this
Signal switches over to sim；When intelligent terminal is in open state, master chip receives button letter with by the second output interface
Number, now terminal executes the original function of external key by itself application software.
By the changing method of sim card provided in an embodiment of the present invention, intelligent terminal can detect outer in the power-offstate
The push button signalling of portion's button triggering, and by this signal, sim is switched over, thus realizing in the power-offstate to sim card
Switching.
Example IV
With reference to Fig. 3, the flow chart showing a kind of sim card changing method of the embodiment of the present invention four.
In the embodiment of the present invention, it is in as a example off-mode carries out the switching of sim card by intelligent terminal, sim to the present invention
Card changing method illustrates, and the sim card changing method of the embodiment of the present invention specifically includes following steps:
Step 401: the control signal input interface of switch chip receives control signal.
The work of switch chip output interface after switch chip receives control signal, is determined according to the state of intelligent terminal
State, concrete determination mode is referring to the explanation in step 402.
Wherein, the working condition of output interface namely determine the first output interface to nfc chip input signal, Yi Jixiang
Second output interface of master chip input signal, this two interfaces turn on or off state.
Step 402: when intelligent terminal is in off-mode, open the first output interface, disconnect the second output interface.
First output interface is used for output key signal to nfc chip interrupt control interface, and control signal is terminal processes
The universal input of device/output gpio signal, when intelligent terminal is in off-mode, gpio signal is low level signal.
Additionally, when intelligent terminal is in open state, gpio signal is high level signal, the first output interface disconnects,
Second output interface output key signal input is to master chip.
Step 403: the key-press input interface of switch chip, receive the push button signalling being triggered by external key.
Preferably, external key includes: volume plus key and/or volume down key.
Step 404: when intelligent terminal is in off-mode, nfc chip interrupt control interface detects push button signalling.
Step 405:nfc chip carries out card switching according to push button signalling to sim.
Under intelligent terminal is in off-mode, the first output interface is opened, and the second output interface disconnects.Nfc chip
Middle fracture passes through the first output interface of switch chip.When the middle fracture of nfc chip detects push button signalling, carry out sim card
Switching.When nfc chip detection is to push button signalling, the sim card being currently at working condition quits work, and is currently at and does not work
The sim card of state is started working.
Additionally, when intelligent terminal is in open state, application program being carried by terminal sim is switched over, main core
Piece receives push button signalling, executes external key original function.
The changing method of the sim card of the embodiment of the present invention, enables corresponding in previous embodiment one and embodiment two
The effect that sim card switching circuit is reached, and there is the beneficial effect of corresponding embodiment, will not be described here.
Each embodiment in this specification is all described by the way of going forward one by one, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar partly mutually referring to.For system embodiment
For, due to itself and embodiment of the method basic simlarity, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
Defend oneself bright.
Above to a kind of switching circuit of sim card provided by the present invention and changing method, it is described in detail, herein
In apply specific case and to the implementation steps of the present invention and realize device and be set forth, the explanation of above example is to use
Understand the method for the present invention and its core concept in help；Simultaneously for one of ordinary skill in the art, according to the present invention's
Thought, all will change in specific embodiments and applications, and in sum, this specification content should not be construed as
Limitation of the present invention.It should be noted that above-described embodiment the present invention will be described rather than limits the invention,
And those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.In right
In requirement, any reference markss between bracket should not be configured to limitations on claims.Word "comprising" is not arranged
Remove and there is element not listed in the claims or step.Word "a" or "an" before element does not exclude the presence of many
Individual such element.The present invention can be by means of the hardware including some different elements and by means of properly programmed calculating
Machine is realizing.If in the unit claim listing equipment for drying, several in these devices can be by same
Hardware branch is embodying.The use of word first, second grade does not indicate that any order.These words can be construed to title.
Claims (10)
1. a kind of switching circuit of sim card, is applied to intelligent terminal, and described intelligent terminal has multiple sim cards, described multiple
Sim card has nfc function it is characterised in that described switching circuit includes:
Power Entry Module, keyboard input module, master chip, nfc chip, control signal module and switch chip；
Described nfc chip includes interrupting control interface；Described switch chip includes: power input interface, key-press input interface,
One output interface, the second output interface, control signal input interface；
Described power input connects the described power input interface of described switch chip, presses described in described keyboard input module connection
Key input interface, described interruption control interface connects described first output interface, and described master chip connects described second output and connects
Mouthful, described control signal module connects described control signal input interface.
2. the switching circuit of sim card according to claim 1 is it is characterised in that described keyboard input module includes: outside
Button, described external key is used for triggering push button signalling.
3. sim card according to claim 1 switching circuit it is characterised in that:
The control signal that described control signal module produces is the gpio signal of intelligent terminal's processor, and described gpio signal is being opened
It is high level signal during machine, be low level signal in shutdown；
Described switch chip, according to described control signal, selects by described first output interface or described second output interface conduct
Output interface.
4. sim card according to claim 3 switching circuit it is characterised in that:
When described intelligent terminal is in off-mode, described control signal input interface receives low level signal, described switch core
Piece selects described first output interface as output interface；
When described intelligent terminal is in open state, described control signal input interface receives high level signal, described switch core
Piece selects described second output interface as output interface.
5. sim card according to claim 4 switching circuit it is characterised in that:
When described interruption control interface detects the signal of described first output interface input, according to the signal receiving to institute
State nfc chip and carry out the switching of sim card.
6. a kind of changing method of client identification module sim card, is applied in the sim card switching circuit of intelligent terminal, described intelligence
Terminal can have multiple sim cards, multiple sim cards described have nfc function, and methods described includes:
The control signal input interface of described switch chip receives control signal；
Described switch chip determines the working condition of described switch chip output interface according to described control signal；
The key-press input interface of described switch chip, receives the push button signalling being triggered by external key；
According to the working condition of described output interface, described push button signalling is exported to corresponding chip；
When nfc chip receives described push button signalling, the mode of operation of sim card is switched over.
7. sim card changing method according to claim 6 is it is characterised in that described external key includes: volume plus key
And/or volume down key.
8. the switching circuit of client identification module card according to claim 6 is it is characterised in that described control signal is eventually
The gpio signal of end processor.
9. sim card changing method according to claim 8 is it is characterised in that described switch chip controls letter according to described
Number determine described switch chip output interface working condition step, comprising:
When described intelligent terminal is in open state, described gpio signal is high level signal, and described first output interface disconnects,
Described second output interface is opened；Wherein, described second output interface is used for exporting described push button signalling to master chip；
When described intelligent terminal is in off-mode, described gpio signal is low level signal, and described first output interface is opened,
Described second output interface disconnects；Wherein, described first output interface is used for exporting described push button signalling to nfc chip interrupt control
Interface processed.
10. sim card switching circuit according to claim 9 it is characterised in that: described according to described output mode and described
Push button signalling, the step that sim card is switched over, comprising:
When described intelligent terminal is in open state, application program is carried by terminal sim is switched over, described master chip
When receiving described push button signalling, execute described external key original function；
When described intelligent terminal is in off-mode, when described nfc chip interrupt control interface detects described push button signalling,
Switch sim card according to described push button signalling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882204.1A CN106358179B (en) | 2016-09-30 | 2016-09-30 | Switching circuit and switching method for Subscriber Identity Module (SIM) card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882204.1A CN106358179B (en) | 2016-09-30 | 2016-09-30 | Switching circuit and switching method for Subscriber Identity Module (SIM) card |
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| CN106358179A true CN106358179A (en) | 2017-01-25 |
| CN106358179B CN106358179B (en) | 2020-02-07 |
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| CN201610882204.1A Active CN106358179B (en) | 2016-09-30 | 2016-09-30 | Switching circuit and switching method for Subscriber Identity Module (SIM) card |
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| CN114915312A (en) * | 2021-02-09 | 2022-08-16 | Oppo广东移动通信有限公司 | Electronic device and control method |
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| CN106358179B (en) | 2020-02-07 |
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