CN109195189A - Double card switching method and apparatus - Google Patents
Double card switching method and apparatus Download PDFInfo
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- CN109195189A CN109195189A CN201811167581.2A CN201811167581A CN109195189A CN 109195189 A CN109195189 A CN 109195189A CN 201811167581 A CN201811167581 A CN 201811167581A CN 109195189 A CN109195189 A CN 109195189A
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- 238000004891 communication Methods 0.000 claims abstract description 136
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 28
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 230000005856 abnormality Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 6
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
This application involves a kind of double card switching method and apparatus.This method comprises: the second signal end for controlling the processor exports a pulse signal to the card test side of wireless communication module when the incoming level of the first signal end of the processor for detecting electronic equipment becomes the first level；According to the pulse signal, the third signal end control switch circuit of the processor is switched to entity card and the wireless communication module access；When the incoming level of the first signal end of the processor for detecting the electronic equipment becomes second electrical level, the second signal end for controlling the processor exports a pulse signal to the card test side of the wireless communication module；According to the pulse signal, the third signal end of the processor controls the switching circuit and is switched to virtual card and the wireless communication module access.Double card list standby function can be realized using this method, the application range of spread radio communication module is reduced because of product developing expense caused by supporting double card to need secondary development, and easy to operate.
Description
Technical field
This application involves fields of communication technology, more particularly to a kind of double card switching method and apparatus.
Background technique
With the development of communication technology, there is wireless communication module.Wireless communication module is widely used in terminal and nothing
The industries such as gauze pass, can make terminal keep connection status.Due to eSIM card (Embedded Subscriber
Identification Module, embedded user identification card) Remote configuration can be carried out by air card-writing, therefore use
Mobile communication carrier's registration connection network may be selected in family.Since mobile communication carrier does not open the eSIM card number of writing, this makes
It obtains and needs support eSIM card and traditional SIM card (Subscriber Identification Module, user in product design
Identification card) double card list standby function.
However, wireless communication module on the market only supports single deck tape-recorder, hardware and software to cannot achieve double card list at present
Standby function.
Summary of the invention
Based on this, it is necessary to cannot achieve double card list standby function technical problem for wireless communication module, provide a kind of energy
Enough double card switching method and apparatus that virtual card and entity card switching are realized in wireless communication module.
A kind of double card switching method, this method comprises: working as the defeated of the first signal end for detecting the processor of electronic equipment
When entering level becomes the first level, the second signal end for controlling the processor exports a pulse signal to wireless communication module
Card test side；According to the pulse signal, the third signal end control switch circuit of the processor is switched to entity card and this is wireless
Communication module access；When the incoming level of the first signal end of the processor for detecting the electronic equipment becomes second electrical level,
The second signal end for controlling the processor exports a pulse signal to the card test side of the wireless communication module；According to the pulse
Signal, the third signal end of the processor control the switching circuit and are switched to virtual card and the wireless communication module access.
This method in one of the embodiments, further include: when the cartoon letters for detecting the electronic equipment are in abnormal shape
When state, controls the second signal end and export a pulse signal；This is controlled according to the pulse signal by the third signal end to open
Powered-down road switches to the virtual card and the wireless communication module access.
The abnormality includes any one in following situations in one of the embodiments: it is unread to virtual card or
Any one card in entity card；Virtual card or entity card read failure；Card loss of data after reading virtual card or entity card.
This method in one of the embodiments, further include: when the entity card deck be normally closed type deck, and this first
When the incoming level of signal end is the first level, then first level is high level, when the incoming level of first signal end is
When second electrical level, then the second electrical level is low level；When the deck of the entity card is deck open in usual, and first signal end
When incoming level is the first level, then first level is low level, when the incoming level of first signal end is second electrical level
When, then the second electrical level is high level.
This method in one of the embodiments, further include: if the incoming level of first signal end does not change,
Restart system to restore to the virtual card and the wireless communication module access.
A kind of double card switching device, the device include processor, switching circuit and wireless communication module；The of the processor
One signal end is connected with the deck of entity card, and the second signal end of the processor is connect with the wireless communication module, the processor
Third signal end connect with the switching circuit, which connect with the switching circuit；When the processor this
When the incoming level of one signal end becomes the first level, which exports a pulse signal to wireless communication module
Card test side, which is switched to entity card according to the pulse signal control switch circuit and the wireless communication module is logical
Road；When the incoming level of first signal end of the processor becomes second electrical level, which exports a pulse
To the card test side of the wireless communication module, which controls the switching circuit according to the pulse signal and is switched to signal
Virtual card and the wireless communication module access.
The device further includes when the cartoon letters of electronic equipment are when in an abnormal state, at this in one of the embodiments,
The second signal end for managing device exports a pulse signal；The third signal end controls switching circuit switching according to the pulse signal
To the virtual card and the wireless communication module access.
The entity card deck includes normally closed type deck or deck open in usual in one of the embodiments,；When the entity card
Deck be normally closed type deck, and the incoming level of first signal end be the first level when, then first level be high level,
When the incoming level of first signal end is second electrical level, then the second electrical level is low level；When the deck of the entity card is
Deck open in usual, and the incoming level of first signal end be the first level when, then first level be low level, when this first
When the incoming level of signal end is second electrical level, then the second electrical level is high level.
The switching circuit includes single-pole double-throw switch (SPDT) in one of the embodiments, and the single-pole double-throw switch (SPDT) is for switching
To the entity card and the wireless communication module access or it is switched to the virtual card and wireless communication module access.
The entity card deck includes detection pin in one of the embodiments, which should with the processor
The connection of first signal end, the detection pin are used for when entity card insertion, which exports the first level.
Above-mentioned double card switching method and apparatus, the incoming level by detecting the first signal end change, and control second signal
Output pulse signal is held, third signal end control switch circuit is switched to virtual card or entity card feed path, is keeping wirelessly communicating
In the case that module existing hardware and software are constant, realize double card list standby function, extends the application range of wireless communication module,
It reduces because supporting double card to need product developing expense caused by secondary development, and easy to operate.
Detailed description of the invention
Fig. 1 is the applied environment figure of double card switching method in one embodiment；
Fig. 2 is the flow diagram of double card switching method in one embodiment；
Fig. 3 is the applied environment figure of double card switching method in another embodiment；
Fig. 4 is the timing diagram of double card switching method in one embodiment；
Fig. 5 is the state machine transition diagram of double card switching method in one embodiment；
Fig. 6 is the circuit diagram of double card switching device in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
The double card switching method provided in the embodiment of the present application, can be applied in application environment as shown in Figure 1.Its
In, processor 102 is connected with switching circuit 104 and wireless communication module 106 respectively, switching circuit 104 and radio communication mold
Block is connected, and specific connection type is as shown in Figure 1.Wherein, processor 102 can be, but not limited to be various personal computers, pen
Remember that the processor of this computer, smart phone, tablet computer and portable wearable device, switching circuit 104 can be by a variety of
Mode controls wireless communication module, wireless communication module 106 be have support LTE (Long Term Evolution, for a long time
Evolution), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communication System) or GPRS
The communication module of (General Packet Radio Service, general packet radio service technology) function, the application are implemented
It is illustrated by taking M.2 wireless communication module as an example in example, but the application is not limited to M.2 wireless communication module.
In one embodiment, as shown in Fig. 2, providing a kind of double card switching method, it is applied in Fig. 1 in this way
It is illustrated for processor, comprising the following steps:
Step 202, when the incoming level of the first signal end of the processor for detecting electronic equipment becomes the first level,
The second signal end for controlling the processor exports a pulse signal to the card test side of wireless communication module.
Wherein, the first signal end of processor is one end that finger processor is connected with the deck of entity card, and is received
One end of SIM_CD_SLOT signal.Second signal end is one end that finger processor is connected with wireless communication module, and output
One end of SIM_DETECT signal.First level can be high level, or low level.The impulse wave of the pulse signal
By taking rectangular wave as an example, but it is not limited to rectangular wave, and one, two or more rectangular waves can be contained in a pulse signal.
Specifically, when the electronic equipment detects the received incoming level of the first signal end of the processor of the electronic equipment
Variation is generated, that is, when becoming the first level, then the second signal end of the processor exports a pulse signal to radio communication mold
The card test side of block.
Step 204, according to the pulse signal, the third signal end control switch circuit of the processor be switched to entity card with
The wireless communication module access.
Wherein, third signal end is one end that finger processor is connected with switching circuit, that is, exports the one of ESIM_SW signal
End.Entity card refers to usim card (Universal Subscriber Identity Module, Global Subscriber identification card) or SIM
Block (Subscriber Identification Module, subscriber identification card).Entity card and wireless communication module access
Including entity card, switching circuit and wireless communication module, three is connected in series.
Specifically, after the second signal end of processor exports the pulse signal, according to the time that the low level pulse terminates,
The third signal end of processor exports ESIM_SW signal, and is switched to usim card by the ESIM_SW signal control switch circuit
Or the access of SIM card and wireless communication module, thus switch to entity card available mode.
In the present embodiment, entity card and the wireless communication are switched in the third signal end control switch circuit of the processor
It further include the initialization for carrying out entity card after module access.The initialization of usim card or SIM card includes electronic equipment to USIM
After card or SIM card power supply, SIM card is resetted, wireless communication module exports SIM card clock, and SIM card provides ATR (Answer To
Reset resets response) to wireless communication module so that it is determined that the baud rate of communication, the initialization for carrying out SIM card or usim card are handed over
Mutually.
Step 206, when the incoming level of the first signal end of the processor for detecting the electronic equipment becomes second electrical level
When, the second signal end for controlling the processor exports a pulse signal to the card test side of the wireless communication module.
Wherein, second electrical level can may be low level for high level, but second electrical level and first level are not same
One level, when first level is high level, second electrical level is low level；When the first level is low level, second electrical level
For high level.
Specifically, when the electronic equipment detects the received incoming level of the first signal end of the processor of the electronic equipment
Variation is generated, i.e., when becoming low level from high level, then the second signal end of the processor exports a pulse signal to wirelessly
The card test side of communication module.
Step 208, according to the pulse signal, the third signal end of the processor controls the switching circuit and is switched to virtual card
With the wireless communication module access.
Wherein, virtual card, which refers to, is directly embedded into traditional SIM card in device chip, can be removed not as independent
Components are added in equipment, and user is without being inserted into SIM card or usim card, i.e., the virtual card is eSIM card (Embedded
Subscriber Identification Module, embedded user identification card) etc..Virtual card and the radio communication mold
Block access includes virtual card, switching circuit and wireless communication module, and three is connected in series.
Specifically, after the second signal end of processor exports the pulse signal, according to the time that the low level pulse terminates,
The third signal end of processor exports ESIM_SW signal, and is switched to eSIM card by the ESIM_SW signal control switch circuit
With the access of wireless communication module, virtual card available mode is thus switched to.
In the present embodiment, virtual card and the wireless communication are switched in the third signal end control switch circuit of the processor
It further include the initialization for carrying out virtual card after module access.The initialization of eSIM card includes that electronic equipment is powered to eSIM card
Afterwards, reset eSIM card, wireless communication module output eSIM card clock, eSIM card provide ATR to wireless communication module so that it is determined that
The baud rate of communication carries out the initialization interaction of eSIM card.
In above-mentioned double card switching method, the incoming level by detecting the first signal end changes, and control second signal end is defeated
Pulse signal out, third signal end control switch circuit are switched to virtual card or entity card feed path, are keeping wireless communication module
Hardware and software it is constant in the case where, be able to achieve double card list standby function, extend the application range of wireless communication module, reduce
Because supporting double card to need product developing expense caused by secondary development, and it is easy to operate.
In one embodiment, double card switching method further include: when the cartoon letters for detecting the electronic equipment are in different
When normal state, controls the second signal end and export a pulse signal；It is controlled by the third signal end according to the pulse signal
The switching circuit switches to the virtual card and the wireless communication module access.
Wherein, abnormality refers to the data of entity card or virtual card not by electronic equipment is read and is used state.
Abnormality includes the unread any one card into virtual card or entity card；Virtual card or entity card read failure；It reads
Card loss of data after virtual card or entity card.
Specifically, when electronic equipment detects that entity card or virtual card are in the shape that data are not read by electronic equipment
When state, the second signal end of electronic equipment control processor exports a low level pulse or high level pulse, and the of processor
Three signal ends export ESIM_SW signal control switch circuit according to the end time of pulse and are switched to virtual card and radio communication mold
Block access enables electronic equipment to read the virtual card.
In above-mentioned double card switching method, pass through detection entity card or the abnormality of virtual card, second signal end output one
A pulse signal, control switch circuit are switched to virtual card feed path, and electronic equipment is enable to read virtual card, and are unlikely to card
Communication is available without card under unusable state.
In one embodiment, abnormality includes any one in following situations: unread to arrive virtual card or entity card
In any one card；Virtual card or entity card read failure；Card loss of data after reading virtual card or entity card.
Wherein, unread any one into virtual card or entity card card refer to electronic equipment it is unread to usim card,
Any one card in SIM card or eSIM card, i.e., in no card-like state.Virtual card or entity card reading unsuccessfully refer to electronic equipment
The data of any one Zhang Kazhong in usim card, SIM card or eSIM card can not be read, i.e., in reading status of fail.It reads empty
Card loss of data refers to that electronic equipment has read the information of any one card in virtual card or entity card after quasi- card or entity card,
But the loss of data of card.
Specifically, when electronic equipment be in unread to any one in usim card, SIM card or eSIM card block, can not
Read usim card, the data of SIM card or any one Zhang Kazhong in eSIM card or in having read data still loss of data shape
When state, the second signal end of electronic equipment control processor exports a low level pulse or high level pulse, and the of processor
Three signal ends are switched to virtual card and wireless communication module access according to the end time control switch circuit of pulse, set electronics
It is standby to re-read the virtual card.
In above-mentioned double card switching method, by detection entity card or the abnormality of virtual card, second signal end can be passed through
A pulse signal is exported, control switch circuit is switched to virtual card feed path, electronic equipment is enable to re-read virtual card,
And it is unlikely to be under unusable state available without card when entity card.
In one embodiment, when the deck of the entity card is normally closed type deck, and the incoming level of first signal end
When for the first level, then first level is high level, when the incoming level of first signal end is second electrical level, then this
Two level are low level；When the entity card deck be deck open in usual, and the incoming level of first signal end be first electricity
Usually, then first level is low level, and when the incoming level of first signal end is second electrical level, then the second electrical level is
High level.
Specifically, the deck of entity card can be normally closed type deck or deck open in usual.When the deck of entity card is normally closed
When formula deck, and after usim card or SIM card insertion, the detection pin of the deck is flicked, since the pin has external pull-up,
The normally closed type deck exports SIM_CD_SLOT signal, which is the first level, that is, high level to the first signal end.Work as usim card
Or SIM card is not inserted into or when usim card or SIM card are extracted, the detection pin of the deck is connected with lower margin, and output second is electric
Flat i.e. low level is to the first signal end.
When the deck of entity card is deck open in usual, after usim card or SIM card insertion, which exports SIM_
CD_SLOT signal, the signal are the first level, that is, low level to the first signal end；After usim card SIM is extracted, the card open in usual
Seat exports second electrical level, that is, high level to the first signal end.
In above-mentioned double card switching method, according to the deck type of entity card, the incoming level of the first signal end is detected, can be made
Electronic equipment adapts to a variety of situations.
In one embodiment, double card switching method further include: if the incoming level of first signal end does not become
Change, then restarts system and restore to the virtual card and the wireless communication module access.
Specifically, in the case where the entity card or virtual card are in abnormality, the received SIM_ of first signal end
The incoming level of CD_SLOT signal does not change, i.e., after usim card or SIM card insertion, extraction, the first signal end is received
SIM_CD_SLOT signal remains the first level or second electrical level, does not change, then electronic equipment is restarted system and restored to void
Quasi- card available mode.
In above-mentioned double card switching method, when card reading occurs abnormal, electronic equipment restarts system, can keep a card constantly
In place, it avoids available without card when card reading exception.
In one embodiment, as shown in Figure 3 and Figure 4, double card switching method is illustrated by taking Fig. 3 and Fig. 4 as an example.In Fig. 3
Circuit diagram includes processor, switching circuit, wireless communication module, usim card and eSIM card, which includes the first signal end
INT1 pin, the GPIO2 pin at second signal end and the GPIO3 pin of third signal end.It with usim card deck is normal in Fig. 4
For enclosed, wherein SIM_CD_SLOT signal is received by the first signal end, and SIM_DETECT signal is by second signal
What end, i.e. GPIO2 pin issued, ESIM_SW signal is issued by third signal end, i.e., GPIO3 pin issues.Wherein scheme
Usim card in 3 and Fig. 4 can be replaced SIM card, be illustrated by taking usim card as an example in the present embodiment.
Specifically, when the deck of usim card is normally closed type deck, and usim card is inserted into, the SIM_ of the first signal end input
CD_SLOT signal becomes high level from low level, and the INT1 pin of the first signal end of the processor of electronic equipment detects this
After level change, SIM_DETECT signal is sent to wireless communication module by the GPIO2 pin at second signal end, which is
One low level pulse or high level pulse, in Fig. 4 by taking low level pulse as an example.According to the end-of-pulsing of SIM_DETECT signal
The GPIO3 pin of time, the third signal end of processor send ESIM_SW signal to switching circuit, which is low
Level signal or high level signal, the embodiment in Fig. 4 pass through ESIM_SW Signal-controlled switch by taking low level signal as an example
Circuit switches to usim card and radio communication mold
The access of block, i.e. usim card are in available mode, and carry out the initialization of USIM.The initialization includes electronic equipment
After usim card power supply, usim card is resetted, wireless communication module exports usim card clock, and usim card provides ATR to wireless communication
Module carries out the initialization interaction of usim card so that it is determined that the baud rate communicated.
When usim card is extracted, the SIM_CD_SLOT signal of the first signal end input becomes low level, electronics from high level
After the INT1 pin of first signal end of the processor of equipment detects the level change, managed by the GPIO2 at second signal end
Foot sends SIM_DETECT signal to wireless communication module, which is a low level pulse or high level pulse, in Fig. 4
Embodiment is by taking low level pulse as an example.According to the low level pulse end time of SIM_DETECT signal, the third of processor is believed
The GPIO3 pin at number end sends ESIM_SW signal to switching circuit, which is that low level signal or high level are believed
Number, in Fig. 4 by taking high level signal as an example, and eSIM card and wireless communication are switched to by ESIM_SW signal control switch circuit
The access of module, i.e. eSIM card are in available mode.The initialization includes after electronic equipment is powered to eSIM card, resetting eSIM
Card, wireless communication module export eSIM card clock, and eSIM card provides ATR to wireless communication module so that it is determined that the baud communicated
Rate carries out the initialization interaction of eSIM card.
In the present embodiment, when the deck of usim card is deck open in usual, and usim card is inserted into, the input of the first signal end
SIM_CD_SLOT signal becomes low level, the INT1 pin detection of the first signal end of the processor of electronic equipment from high level
To after the level change, SIM_DETECT signal, the letter are sent to wireless communication module by the GPIO2 pin at second signal end
Number be a low level pulse or high level pulse.According to the pulses ending time of SIM_DETECT signal, the third of processor
The GPIO3 pin of signal end sends ESIM_SW signal to switching circuit and is switched to by ESIM_SW signal control switch circuit
The access of usim card and wireless communication module, i.e. usim card are in available mode, and carry out the initialization of USIM.The initialization package
After electronic equipment is included to usim card power supply, usim card is resetted, wireless communication module exports usim card clock, and usim card provides ATR
To wireless communication module so that it is determined that the baud rate of communication, carries out the initialization interaction of usim card.
When the deck of usim card is deck open in usual, when usim card is extracted, the SIM_CD_ of the first signal end input
SLOT signal becomes high level from low level, and the INT1 pin of the first signal end of the processor of electronic equipment detects the level
After variation, SIM_DETECT signal is sent to wireless communication module by the GPIO2 pin at second signal end, which is one
Low level pulse or high level pulse.According to the pulses ending time of SIM_DETECT signal, the third signal end of processor
GPIO3 pin to switching circuit send ESIM_SW signal and by ESIM_SW signal control switch circuit switch to eSIM card and
The access of wireless communication module, i.e. eSIM card are in available mode.The initialization includes after electronic equipment is powered to eSIM card, again
Position eSIM card, wireless communication module export eSIM card clock, eSIM card provide ATR to wireless communication module so that it is determined that communicate
Baud rate carries out the initialization interaction of eSIM card.
In the present embodiment, by taking the deck of usim card is normally closed type deck as an example, the SIM_DETECT of wireless communication module is managed
Foot function is as follows:
I.e. when usim card is inserted into, SIM_DETECT signal is high level；When usim card is extracted, SIM_DETECT signal
For low level.
In the present embodiment, by taking the deck of usim card is deck open in usual as an example, the SIM_DETECT of wireless communication module is managed
Foot function is as follows:
I.e. when usim card is inserted into, SIM_DETECT signal is low level；When usim card is extracted, SIM_DETECT signal
For high level.
In the present embodiment, by taking second signal end GPIO2 pin exports low level pulse as an example, the low level pulse in table can
High level pulse is replaced with, electronic equipment is defined as follows table to the control logic of GPIO2:
| State | GPIO2 output | Min | Typ | Max |
| Default conditions | High level | 1.26V | 1.8V | 2.1V |
| USIM insertion | Low level pulse | 200ms | 500ms | 1s |
| USIM is extracted | Low level pulse | 200ms | 500ms | 1s |
When electronic equipment is in default conditions, the output of GPI02 keeps high level state, high level minimum value at this time
For 1.26V, representative value 1.8V, maximum value 2.1V.When usim card inserts or pull out, a low level pulse is exported, this
When the pulse the lasting shortest time be 200 milliseconds, representative value be 500 milliseconds, maximum value be 1 second.
It in the present embodiment, defines, therefore time control is required as follows in conjunction with the function of SIM_DETECT pin:
As shown in figure 4, tslotFor when usim card inserts or pull out, the Key dithering time of sim card connector, the Key dithering
The minimum value of time is 50 milliseconds, and representative value is 100 milliseconds, and maximum value is 200 milliseconds.tcdIt is controlled for the processor of electronic equipment
GPIO2 pin exports the time of low pulse, and minimum value is 200 milliseconds, and representative value is 500 milliseconds, and maximum value is 1 second.
In the present embodiment, the priority of usim card is higher than eSIM card, when usim card insertion, is then switched to usim card；When
When usim card is extracted, it is switched to eSIM card.Keep thering is to be stuck in a position whenever always.
In the present embodiment, if electronic equipment is in unread to usim card, SIM card or eSIM card after usim card insertion
In any one card, the data of any one Zhang Kazhong in usim card, SIM card or eSIM card can not be read or in having read
Data but when loss of data state, the GPIO2 pin of the processor of electronic equipment is equally one low level arteries and veins of output at this time
Restore high level state after punching, i.e. simulation usim card extracts the state that eSIM card insertion enters, and the processor of electronic equipment passes through
GPIO3 pin output ESIM_SW signal control switch circuit is switched to eSIM card feed path, carries out the initialization of eSIM card again.
In the present embodiment, under no card-like state, i.e., electronic equipment can not read any one card in usim card, SIM card or eSIM card
In the state of, SIM_CD_SLOT signal is become high level by usim card insertion at this time.If SIM_CD_SLOT signal is kept not
Become, then needs to restart system and restore to eSIM card available mode.
Above-mentioned double card switching method, the incoming level by detecting INT1 pin change, and control GPIO2 pin exports pulse
Signal, GPIO3 pin control switch circuit are switched to virtual card or entity card feed path, are keeping wireless communication module existing hardware
And in the case that software is constant, it is able to achieve double card list standby function, extends the application range of wireless communication module, is reduced because supporting
Double card needs product developing expense caused by secondary development, and easy to operate；And in the case where being in abnormality, electronic equipment
The state that processor simulation usim card is extracted can solve abnormality and maintain SIM card access circuit.
In one embodiment, as shown in figure 5, illustrating double card switching method by taking the figure as an example, and the usim card deck is
Normally closed type.Wherein, which includes three states, is eSIM card available mode, usim card available mode and no SIM respectively
Card available mode.
When usim card is not inserted into, electronic equipment default conditions are eSIM card available mode.When usim card insertion, first
The SIM_CD_SLOT signal of signal end input becomes high level.When usim card is extracted, the SIM_CD_SLOT of the first signal end
Signal becomes low level, while switching to eSIM card and wireless communication module access, and eSIM card is made to be in available mode.If
Usim card read failure, electronics processors can also be switched to by third signal end control switch circuit eSIM card with wirelessly
Communication module access.If eSIM card also read error, switches to NO SIM card state at this time.Under NO SIM card state, when
When usim card is inserted into, the SIM_CD_SLOT signal of the first signal end input becomes high level, switches to usim card and wireless at this time
Communication module access.If the SIM_CD_SLOT signal of the first signal end input remains unchanged, needing to restart system can just be cut
Shift to eSIM card available mode.
Above-mentioned double card switching method, three kinds of states of double card switching state machine are able to achieve double card list standby function, and operate
It is easy；It, can be by switching to eSIM card available mode or restarting system maintains electronic equipment and when abnormality occur
It one the case where being stuck in, avoids available without card.
It should be understood that although each step in the figure of Fig. 1-5 is successively shown according to the instruction of arrow, these
Step is not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps are held
There is no stringent sequences to limit for row, these steps can execute in other order.Moreover, at least part in Fig. 1-5
Step may include that perhaps these sub-steps of multiple stages or stage are executed in synchronization to multiple sub-steps
It completes, but can execute at different times, the execution sequence in these sub-steps or stage, which is also not necessarily, successively to be carried out,
But it can be executed in turn or alternately at least part of the sub-step or stage of other steps or other steps.
In one embodiment, as shown in fig. 6, providing a kind of double card switching device, which includes place
Manage device, switching circuit and wireless communication module；First signal end of the processor is connected with the deck of entity card, the processor
Second signal end is connect with the wireless communication module, and the third signal end of the processor is connect with the switching circuit, the channel radio
Letter module is connect with the switching circuit；When the incoming level of first signal end of the processor becomes the first level, this
Binary signal end exports a pulse signal to the card test side of wireless communication module, and the third signal end is according to the pulse signal control
Switching circuit processed is switched to entity card and the wireless communication module access；When the incoming level of first signal end of the processor
When becoming second electrical level, which exports a pulse signal to the card test side of the wireless communication module, the third
Signal end controls the switching circuit according to the pulse signal and is switched to virtual card and the wireless communication module access.
Wherein, by taking wireless communication module is M.2 wireless communication module as an example, which is the processor of electronic equipment,
Processor can be, but not limited to be various personal computers, laptop, smart phone, tablet computer and portable wearable
The processor of equipment.Usim card in Fig. 6 can be replaced SIM card, be illustrated by taking usim card as an example in the present embodiment.
Specifically, the INT1 pin of the first signal end of the processor is connected with the SW2 pin of the deck of usim card, at this
The GPIO2 pin at second signal end of reason device is connected with the SIM_DETECT pin of wireless communication module, the third of the processor
The GPIO3 pin of signal end is connected with the switching circuit.First level can may be low level for high level, but second is electric
Flat and first level is not same level, and when first level is high level, second electrical level is low level；When the first level
When for low level, second electrical level is high level.
When the incoming level of the INT1 pin of the first signal end of the processor becomes the first level, second signal end
GPIO2 pin exports a low level pulse or high level pulse to the SIM_DETECT pin of wireless communication module, third letter
Number end GPIO3 pin usim card and radio communication mold are switched to according to the end time control switch circuit of the low level pulse
Block access makes usim card be in available mode.
When the incoming level of the INT1 pin of the first signal end of the processor becomes second electrical level, second signal end
GPIO2 pin exports a low level pulse or high level pulse to the SIM_DETECT pin of wireless communication module, third letter
Number end GPIO3 pin according to the end time control switch circuit of the low level pulse is switched to eSIM card and wireless communication module
Access makes eSIM card be in available mode.
In the present embodiment, the third signal end GPIO3 pin control switch circuit of the processor be switched to entity card with
It further include the initialization for carrying out entity card after the wireless communication module access.The initialization of usim card or SIM card includes electronics
After equipment is to usim card or SIM card power supply, SIM card is resetted, wireless communication module exports SIM card clock, and SIM card provides ATR
(Answer To Reset resets response) is to wireless communication module so that it is determined that the baud rate of communication, carries out SIM card or USIM
The initialization interaction of card.
In the present embodiment, the third signal end GPIO3 pin control switch circuit of the processor be switched to virtual card with
It further include the initialization for carrying out virtual card after the wireless communication module access.The initialization of eSIM card is given including electronic equipment
After the power supply of eSIM card, eSIM card is resetted, wireless communication module exports eSIM card clock, and eSIM card provides ATR to radio communication mold
Block carries out the initialization interaction of eSIM card so that it is determined that the baud rate communicated.
In above-mentioned double card switching device, by the connection relationship of processor, switching circuit and wireless communication module, detection the
The incoming level of one signal end changes, and controls second signal end output pulse signal, the switching of third signal end control switch circuit
Double card list is able to achieve in the case where keeping the hardware and constant software of wireless communication module to virtual card or entity card feed path
Standby function extends the application range of wireless communication module, reduces because of product development caused by supporting double card to need secondary development
Expense, and it is easy to operate.
In one embodiment, the device further include when the electronic equipment cartoon letters it is when in an abnormal state, the processing
The second signal end of device exports a pulse signal；The third signal end controls the switching circuit according to the pulse signal and switches to
The virtual card and the wireless communication module access.
Specifically, abnormality includes any one in following situations: unread any into virtual card or entity card
One card；Virtual card or entity card read failure；Card loss of data after reading virtual card or entity card.At the deck of entity card
When abnormality, the second signal end GPIO2 pin of processor exports a low level pulse or high level pulse, processor
Third signal end GPIO3 pin eSIM card and radio communication mold are switched to according to the end time control switch circuit of the pulse
Block access makes eSIM card be in available mode.
Above-mentioned double card switching device, by detection entity card or the abnormality of virtual card, second signal end exports one
Pulse signal, control switch circuit are switched to virtual card feed path, and electronic equipment is enable to read virtual card, and are unlikely to cartoon
Letter is available without card under unusable state.
In one embodiment, which includes normally closed type deck or deck open in usual；When the card of the entity card
Seat be normally closed type deck, and the incoming level of first signal end be the first level when, then first level be high level, when this
When the incoming level of first signal end is second electrical level, then the second electrical level is low level；When the deck of the entity card is normally opened
Formula deck, and the incoming level of first signal end be the first level when, then first level be low level, when first signal
When the incoming level at end is second electrical level, then the second electrical level is high level.
Specifically, the deck of entity card can be normally closed type deck or deck open in usual.When the deck of entity card is normally closed
When formula deck, and after usim card or SIM card insertion, the detection pin of the deck is flicked, since the pin has external pull-up,
The normally closed type deck exports the first level, that is, high level to the first signal end.When usim card or SIM card are not inserted into or usim card
Or when SIM card extraction, the detection pin of the deck is connected with lower margin, output second electrical level, that is, low level to the first signal end.
When the deck of entity card is deck open in usual, after usim card or SIM card insertion, the deck output first open in usual
Level, that is, low level is to the first signal end；After usim card SIM is extracted, the deck output second electrical level, that is, high level open in usual is extremely
First signal end.
Above-mentioned double card switching device adjusts the input signal of the first signal end, can make electricity according to the deck type of entity card
Sub- equipment adapts to a variety of situations.
In one embodiment, as shown in fig. 6, the switching circuit includes single-pole double-throw switch (SPDT), which is used
In being switched to the entity card and the wireless communication module access or be switched to the virtual card and wireless communication module access.In Fig. 6
Usim card can be replaced SIM card, be illustrated by taking usim card as an example in the present embodiment.
It specifically, include single-pole double-throw switch (SPDT), one end access to wireless communication of the single-pole double-throw switch (SPDT) in the switching circuit
Module, in addition both ends are respectively connected to usim card and eSIM card.When the second electricity of GPIO3 pin output of the third signal end of processor
Usually, the single-pole double-throw switch (SPDT) of switching circuit switches to usim card and wireless communication module access, and usim card is made to be in available shape
State；When third signal end GPIO3 pin export the first level when, the single-pole double-throw switch (SPDT) of switching circuit switch to eSIM card and
Wireless communication module access makes eSIM card be in available mode.
Above-mentioned double card switching device switches to entity card and virtual card by single-pole double-throw switch (SPDT) and wireless communication module is logical
Road is able to achieve the function that double card list waits for, and easy to operate, and response is rapid.
In one embodiment, which includes detection pin, the detection pin and the processor this first
Signal end connection, the detection pin are used for when entity card insertion, which exports the first level, and for working as institute
When stating entity card extraction, the detection pin exports the second electrical level.
Specifically, the usim card or the deck of SIM card include detection pin, which includes detection pin SW2, the detection
Pin is connected with the INT1 pin of the first signal end of processor.When the deck of the usim card is normally closed type deck, the detection
Pin is used for when entity card insertion, the first signal end of detection pin output the first level, that is, high level to processor
INT1 pin.When usim card is not inserted into or usim card is extracted, the detection pin SW2 of the deck is connected with lower margin, output
Second electrical level, that is, low level is to the first signal end.
In the present embodiment, when the deck of the usim card is deck open in usual, which is used to work as the entity card insertion
It is fashionable, the INT1 pin of the first signal end of detection pin output the first level, that is, low level to processor.When usim card not
When insertion or usim card are extracted, the detection pin SW2 of the deck is connected with lower margin, exports second electrical level, that is, high level to the
One signal end.
Above-mentioned double card switching device, detection pin are connected with the first signal end, by detecting the output level of pin, make to locate
First signal end of reason device receives different signals, so that detect usim card or SIM card inserts or pull out state.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of double card switching method, which comprises
When the incoming level of the first signal end of the processor for detecting electronic equipment becomes the first level, the processing is controlled
The second signal end of device exports a pulse signal to the card test side of wireless communication module；
According to the pulse signal, the third signal end control switch circuit of the processor is switched to entity card and described wireless
Communication module access；
When the incoming level of the first signal end of the processor for detecting the electronic equipment becomes second electrical level, described in control
The second signal end of processor exports a pulse signal to the card test side of the wireless communication module；
According to the pulse signal, the third signal end of the processor control the switching circuit be switched to virtual card with it is described
Wireless communication module access.
2. the method according to claim 1, wherein the method also includes:
When the cartoon letters for detecting the electronic equipment are when in an abnormal state, control the second signal end and export a pulse
Signal；
By the third signal end according to the pulse signal control the switching circuit switch to the virtual card with it is described
Wireless communication module access.
3. according to the method described in claim 2, it is characterized in that, the abnormality includes any one in following situations:
The unread any one card into virtual card or entity card；
Virtual card or entity card read failure；
Card loss of data after reading virtual card or entity card.
4. the method according to claim 1, wherein the method also includes:
When the deck of the entity card is normally closed type deck, and the incoming level of first signal end is the first level, then
First level is high level, and when the incoming level of first signal end is second electrical level, then the second electrical level is
Low level；
When the entity card deck be deck open in usual, when the incoming level of first signal end be the first level when, then
First level is low level, and when the incoming level of first signal end is second electrical level, then the second electrical level is
High level.
5. method according to claim 1 or 2, which is characterized in that the method also includes:
If the incoming level of first signal end does not change, restarts system and restore to the virtual card and described wireless
Communication module access.
6. a kind of double card switching device, which includes processor, switching circuit and wireless communication module；
First signal end of the processor is connected with the deck of entity card, the second signal end of the processor and described wireless
Communication module connection, the third signal end of the processor connect with the switching circuit, the wireless communication module with it is described
Switching circuit connection；
When the incoming level of first signal end of the processor becomes the first level, the second signal end output one
A pulse signal is to the card test side of wireless communication module, and the third signal end is according to the pulse signal control switch circuit
It is switched to entity card and the wireless communication module access；
When the incoming level of first signal end of the processor becomes second electrical level, the second signal end output one
A pulse signal is to the card test side of the wireless communication module, and the third signal end is according to pulse signal control
Switching circuit is switched to virtual card and the wireless communication module access.
7. device according to claim 6, which is characterized in that described device further includes the cartoon letters when the electronic equipment
When in an abnormal state, the second signal end of the processor exports a pulse signal；
The third signal end controls the switching circuit according to the pulse signal and switches to the virtual card and described wireless
Communication module access.
8. device according to claim 6, which is characterized in that the entity card deck is normally closed type deck or card open in usual
Seat；
When the deck of the entity card is normally closed type deck, and the incoming level of first signal end is the first level, then
First level is high level, and when the incoming level of first signal end is second electrical level, then the second electrical level is
Low level；
When the entity card deck be deck open in usual, when the incoming level of first signal end be the first level when, then
First level is low level, and when the incoming level of first signal end is second electrical level, then the second electrical level is
High level.
9. device according to claim 6, which is characterized in that the switching circuit includes single-pole double-throw switch (SPDT), the list
Double-pole double throw switch is connected with the wireless communication module, for be switched to the entity card and the wireless communication module access or
It is switched to the virtual card and wireless communication module access.
10. device according to claim 6, which is characterized in that the entity card deck includes detection pin, the detection
Pin is connect with first signal end of the processor；The detection pin is used for when entity card insertion, described
It detects pin and exports first level, and for when the entity card is extracted, the detection pin to export described second
Level.
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| CN113950044A (en) * | 2021-09-16 | 2022-01-18 | 深圳市优克联新技术有限公司 | Method and device for identifying user identification card, terminal equipment and storage medium |
| CN113950044B (en) * | 2021-09-16 | 2024-03-29 | 深圳市优克联新技术有限公司 | User identification card identification method, device, terminal equipment and storage medium |
| CN114884528A (en) * | 2022-07-13 | 2022-08-09 | 荣耀终端有限公司 | SIM card communication circuit, related device and control method |
| WO2024012020A1 (en) * | 2022-07-13 | 2024-01-18 | 荣耀终端有限公司 | Sim card communication circuit, related apparatus, and control method |
| EP4333314A4 (en) * | 2022-07-13 | 2025-02-19 | Honor Device Co Ltd | SIM CARD COMMUNICATION CIRCUIT, ASSOCIATED DEVICE AND CONTROL METHOD |
| CN115442795A (en) * | 2022-08-25 | 2022-12-06 | 杭州海康汽车软件有限公司 | Communication card control circuit and monitoring equipment |
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| CN109195189B (en) | 2021-07-06 |
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