CN102548046A - Three-card dual-standby mobile phone and method of realizing three-card dual-standby function in same - Google Patents
Three-card dual-standby mobile phone and method of realizing three-card dual-standby function in same Download PDFInfo
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- CN102548046A CN102548046A CN2010106044255A CN201010604425A CN102548046A CN 102548046 A CN102548046 A CN 102548046A CN 2010106044255 A CN2010106044255 A CN 2010106044255A CN 201010604425 A CN201010604425 A CN 201010604425A CN 102548046 A CN102548046 A CN 102548046A
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Abstract
The invention discloses a three-card dual-standby mobile phone and a communication method thereof, and the three-card dual-standby mobile phone is provided with three SIM (subscriber identity module) card holders. The invention also provides a method of realizing a three-card dual-standby function in the mobile phone, thus realizing the dual-card dual-standby aim. According to the invention, a one-way selective switch is additionally arranged on a data line (23) of a second SIM card holder in a dual-card dual-standby circuit, so that a baseband processor can select a first SIM card holder and the second SIM card holder to work as a group in a dual-standby manner, or select the first SIM card holder and a third SIM card holder to work as a group in a dual-standby manner according to requirements of users. Therefore, the users can conveniently use the three SIM card holders by switching.
Description
Technical field
The present invention relates to a kind of mobile phone and communication means thereof, relate in particular to a kind of method that has the mobile phone of the two standby functions of three cards and in mobile phone, realize the two standby functions of three cards.
Background technology
In order to understand the present invention better, below just the known background technology of those skilled in the art do one and simply introduce.
GSM (Global System for Mobile Communications) Chinese is global system for mobile communications; It is a kind of mobile communication technology standard that originates from Europe; It is second generation mobile communication technology; Its exploitation purpose is to let all parts of the world can use a mobile telephone network standard jointly, lets the user use a mobile phone just can manage it all over the whole world.Gsm system comprises several frequency ranges such as GSM 900:900MHz, GSM1800:1800MHz and GSM1900:1900MHz.
BBP is a vitals of mobile phone; Be equivalent to a protocol processor; Be responsible for data processing and storage, primary clustering is unit such as digital signal processor, microcontroller, internal memory, and major function is baseband coding/decoding, acoustic coding and speech coding etc.BBP also is baseband chip, and different BBPs is supported different communication standard, based on the baseband chip of gsm communication standard, also is the GSM chip usually.
SIM is the chip that has microprocessor, in 5 module: CPU, program memory ROM, working storage RAM, data storage EEPROM and serial communication unit are arranged, these 5 modules are integrated in the integrated circuit.SIM is when being connected with mobile phone, and 5 connecting lines of minimum needs: 1, power supply (Vcc) 2, clock (CLK) 3, data I/O mouth (Data) 4, (RST) 5 that reset, earth terminal (GND) when it inserts the mobile phone SIM deck, are connected with the corresponding signal end of SIM seat respectively.
Selector switch (Switch) is a kind of three-stable state circuit, and it can be according to the level of gating end, the state of decision input end and output.When elected go side was in strobe state, the state of output depended on input end's state; When elected go side is in cut-off state, then no matter input end's level how, output all is high-impedance state.Selector switch has the branch of single channel and multichannel, and as its name suggests, the single channel selector switch can a multiplexing holding wire, and multidiameter option switch can multiplexing holding wire more than two.
RTC (Real Time Clock) is the abbreviation of real-time clock.The RTC register guarantees mobile phone terminal canned data before can keeping under the situation of not cutting off the power supply.
NVRAM (Non-Volatile Random Access Memory) is the abbreviation of nonvolatile random access memory, refers to after the outage random access storage device that the data of being stored are not lost.In cell phone system, this part generally realizes through file system, therefore wants to visit NVRAM, and necessary first system initialization could normal access NVRAM after accomplishing file system.
Existing mobile communication method based on the GSM chip has three kinds to be that the single deck tape-recorder list is treated, two card is singly treated and double-card dual-standby.
The single deck tape-recorder list waits it is prevailing mobile communication method, and mobile phone only has a SIM seat, and its technical scheme is as shown in Figure 1, and power supply/ground/clock that being used for of BBP is connected with SIM/reset/data-signal is connected directly to the corresponding signal end of SIM seat.This is prevailing mobile communication method, has only a SIM standby.
Two cards mobile phone singly to be referred to has two SIM seats, can insert two SIM cards, but the user can only select a SIM standby through mobile phone interface.Its concrete technical scheme is as shown in Figure 2, and the clock of the clock that being used for of BBP is connected with SIM/reset/data-signal/reset signal directly is connected with clock, the reset signal end of first, second SIM seat respectively.The data-signal of the clock that being used for of BBP is connected with SIM/reset/data-signal is divided into two-way through a single channel selector switch; One the tunnel connects the data-signal end of the first SIM seat; Other one the tunnel connects the data-signal end of the second SIM seat, and BBP is controlled the single channel selector switch through control signal and selected SIM1 or SIM2 standby.
Double-card dual-standby refers to that mobile phone has two SIM seats, and the standby simultaneously of two SIM cards.Its operation principle is that BBP passes through constantly switching mutually between two networks of SIM registration of software, is used for keeping mobile phone and network service.Because switching time is very short, belongs to a millisecond rank, can not switching take place sensenet to the user, is equal to and has realized two card standbies simultaneously.Its concrete technical scheme is as shown in Figure 3; The clock that being used for of BBP is connected with SIM/reset/data-signal is connected with the clock of two SIM seats/reset/data-signal end respectively through a multidiameter option switch, and BBP is controlled multidiameter option switch through control signal and selected SIM1 or SIM2 communication.
Existing these technical schemes can only realize double-card dual-standby at most, just on hardware, can only support two SIMs simultaneously, if the user has three SIMs simultaneously, just can not use simultaneously.Usually,, just need open cell phone rear cover and change, waste time and energy if the user will use the 3rd SIM, very inconvenient.
This shows that for the user of three SIMs is conveniently arranged, urgent need will be improved prior art.
Summary of the invention
The technical problem that the present invention will solve is to overcome the defective that prior art can not be used three SIMs simultaneously, and a kind of method that has the mobile phone of the two standby functions of three cards and in mobile phone, realize the two standby functions of three cards is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of mobile phone with the two standby functions of three cards is provided with BBP, the first SIM seat, the second SIM seat and Three S's IM deck in the said hand set machine shell; The clock that being used for of said BBP is connected with the SIM seat/reset/data-signal is connected to the input of a multidiameter option switch; The output of said multidiameter option switch is divided into two groups; First group of clock/reset/data-signal is connected with the corresponding signal end of the said first SIM seat; Data-signal in second group of clock/reset/data-signal is connected to the input of a single channel selector switch; The output of said single channel selector switch is connected with the data terminal of said second, third SIM seat respectively, and the clock/reset signal in said second group of clock/reset/data-signal then directly is connected with clock, the reset signal end of said second, third SIM seat respectively.Said BBP is respectively to said multidiameter option switch, single channel selector switch output control signal, treats that in said three SIM seats, to select first, second deck to be that a combination is two work or first, the 3rd deck are that a combination is two and treat work.
In the mobile phone with the two standby functions of three cards of the present invention, said mobile phone baseband processor is the GSM chip.
In the mobile phone with the two standby functions of three cards of the present invention, stored the SIM value in the RTC register of said BBP; Said RTC register keeps the SIM value of storage constant under the situation that mobile phone does not cut off the power supply.
In the mobile phone with the two standby functions of three cards of the present invention, stored the SIM value in the NVRAM memory of said mobile phone terminal; Said NVRAM memory keeps the SIM value of storage constant under the situation of mobile phone outage.
A kind of method that in mobile phone, realizes the two standby functions of three cards; Comprise: select to handle by multichannel; The clock of BBP output/reset/data-signal is divided into two groups; Output to first deck with first group; Second group data-signal is made single channel to be selected to handle; Be divided into two-way and output to second, third deck respectively, clock/reset signal of second group is write in reply with handling, output to second, third deck respectively; Select to select to handle with single channel by controlling said multichannel, in said three SIM seats, selecting first, second deck is that two work or first, the 3rd decks treated of a combination are that work pair are treated in a combination.
Realize that of the present invention three block in the method for two standby functions in mobile phone, said BBP selects processing to control through the RTC register and the SIM value in the NVRAM memory that read mobile phone terminal to said single channel.
Realize that of the present invention three block in the method for two standby functions in mobile phone; When cell phone system starts; Said BBP is through the SIM value in the RTC register that reads mobile phone terminal; To single channel selector switch output control signal, control the switching between said second deck and the 3rd deck.
Realize that of the present invention three block in the method for two standby functions in mobile phone; Said BBP is after system initialization is accomplished; Through reading the SIM value in the NVRAM memory, and compare, guarantee that the output control signal is correct with SIM value in the said RTC register.
Realize that of the present invention three block in the method for two standby functions in mobile phone; When the user gets into menu selection switching SIM2/SIM3 by mobile phone interface; The corresponding SIM value that the user selects in system preserves in NVRAM memory and the RTC particular register, said single channel is selected to handle control.
Realize that of the present invention three block in the method for two standby functions in mobile phone, under the situation of mobile phone outage, said BBP guarantees that through reading the SIM value in the NVRAM memory output control signal is correct.
The present invention has following advantage: the first, and production cost is low, and the mobile phone with the two standby functions of three cards of the present invention has only increased a single channel selector switch and a SIM seat in existing double-card dual-standby circuit, and production cost increases little.The second, simple to operate, the user can change SIM or buy new cell-phone, just can use three SIMs simultaneously.
The present invention compared with prior art; No matter obvious improvement and outstanding contribution are all arranged on structure or function, and have practicality, can produce positive effect; Through the present technique scheme, the cellphone subscriber can select to use two standbies simultaneously in three SIMs.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further, in the accompanying drawing:
Fig. 1 is that existing single deck tape-recorder list treats that the circuit of mobile phone technique scheme connects sketch map;
Fig. 2 is that existing two card treats that singly the circuit of mobile phone technique scheme connects sketch map;
Fig. 3 is that the circuit of existing double card double standby mobile phone technical scheme connects sketch map;
Fig. 4 is that the circuit of the present invention's three card double standby mobile phone technical schemes connects sketch map;
Fig. 5 is the present invention's flow chart during the SIM mode switch when in mobile phone, realizing system start-up in the method for the two standby functions of three cards.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 4, a kind of mobile phone with the two standby functions of three cards is provided with BBP, the first SIM seat, the second SIM seat and Three S's IM deck in the said hand set machine shell; The clock that being used for of said BBP is connected with the SIM seat/reset/data-signal is connected to the input of a multidiameter option switch; The output of said multidiameter option switch is divided into two groups; First group of clock 11/, 12/ data, 13 signals that reset are connected with the corresponding signal end of the said first SIM seat; Reset data 23 signals in 22/ data, 23 signals of second group of clock 21/ are connected to the input of a single channel selector switch; The output of said single channel selector switch is connected with the data terminal of said second, third SIM seat respectively, and said second group of clock 21/ clock 21/ in 22/ data, 23 signals 22 signals that reset that reset then directly are connected with clock, the reset signal end of said second, third SIM seat respectively.Said BBP is respectively to said multidiameter option switch, single channel selector switch output control signal 1,2, treats that in said three SIM seats, to select first, second deck to be that a combination is two work or first, the 3rd deck are that a combination is two and treat work.
Said mobile phone baseband processor is the GSM chip.
Stored the SIM value in the RTC register of said BBP; Said RTC register keeps the SIM value of storage constant under the situation that mobile phone does not cut off the power supply.
Stored the SIM value in the NVRAM memory of said mobile phone terminal; Said NVRAM memory keeps the SIM value of storage constant under the situation of mobile phone outage.
By an aforementioned single channel selector switch and SIM seat of in existing double-card dual-standby circuit, only having increased, the mobile phone that makes the present invention have the two standby functions of three cards can support the user to use three SIMs simultaneously on hardware.
A kind of method that in mobile phone, realizes the two standby functions of three cards; Comprise: select to handle by multichannel; The clock of BBP output/reset/data-signal is divided into two groups; Output to first deck with first group; Second group data-signal 23 is made single channel select to handle, be divided into two-way 231,232, output to second, third deck respectively; Second group clock 21/, 22 signals that reset are write in reply with handling, output to second, third deck respectively; Select to select to handle with single channel by controlling said multichannel, in said three SIM seats, selecting first, second deck is that two work or first, the 3rd decks treated of a combination are that work pair are treated in a combination.
Said BBP selects processing to control through the RTC register and the SIM value in the NVRAM memory that read mobile phone terminal to said single channel.
When cell phone system started, said BBP to single channel selector switch output control signal, was controlled the switching between said second deck and the 3rd deck through the SIM value in the RTC register that reads mobile phone terminal.
Said BBP through reading the SIM value in the NVRAM memory, and compares with SIM value in the said RTC register after system initialization is accomplished, and it is correct that control signal is exported in assurance.
When the user got into menu selection switching SIM2/SIM3 through mobile phone interface, the corresponding SIM value that the user selects in system preserved in NVRAM memory and the RTC particular register, selects processing to control to said single channel.
Under the situation of mobile phone outage, said BBP guarantees that through reading the SIM value in the NVRAM memory output control signal is correct.
Mobile phone with the two standby functions of three cards of the present invention, its system works principle is:
1, when the user got into menu selection switching SIM2/SIM3 through mobile phone interface, BBP was provided with two predefined SIM values, for example, selects SIM2 with the VA representative of consumer, selects SIM3 with the VB representative of consumer.After the user selected, BBP was set to corresponding SIM2 or the SIM3 value (being VA or VB) that the user selectes in NVRAM memory and the RTC particular register; When mobile phone is started shooting for the first time, when user's setting not yet in effect SIM2 value or SIM3 value, one of them is stored as default value with SIM2 or SIM3 value for NVRAM memory and RTC particular register;
2; Because the SIM pattern is switched when being in system's startup; System initialization is not also accomplished; Can not read the NVRAM memory this moment; Therefore have only from the RTC particular register and read; And the information that the RTC particular register deposited in before keeping under the situation of not cutting off the power supply; The NVRAM memory can the outage situation under maintenance information; Under the situation that cell phone system is restarted; This value can not change; Only cut off the power supply at mobile phone; Under the situation of restarting that powers on again, the value in the RTC particular register just possibly change, and reverts to default value; But this moment is because not change of the value in the NVRAM memory; After the restarting systems, the value that BBP directly will read from the NVRAM memory is set in the RTC particular register, and the assurance whole system can be carried out correct program circuit;
3, after system starts; Because the value of having stored SIM2 or SIM3 in the RTC particular register of mobile phone baseband processor; BBP reads the SIM value of storing in the RTC particular register; Control by 2 pairs of single channel selector switches of control signal according to the SIM value that reads; If what read is the value of SIM2, then make the single channel selector switch connect SIM2, if what read is the value of SIM3; Then make the single channel selector switch connect SIM3, get into normal start-up routine;
4, after system initialization was accomplished, BBP read the value of the SIM that stores in the NVRAM memory, and and the value of from the RTC particular register, storing compare: if these two values of a. are unequal; The value that system directly will read from the NVRAM memory is set in the RTC particular register; Restarting systems then is because this value is kept in the particular register of RTC, so in the process of restarting; This value can not lost, and starts the back whole system and can carry out correct program circuit; If b. equate, then get into normal operating state;
5, when the user gets into menu selection switching SIM2/SIM3 through mobile phone interface; System preserves SIM2 or SIM3 value that the user selects advance in NVRAM memory and the RTC particular register; Point out restarting systems then, owing to be to be kept in NVRAM and the RTC register, this value can not lost in start-up course; After the system restart, switch the SIM pattern based on the value that reads.
In concrete the application; As shown in Figure 5 is the present invention's flow chart during the SIM mode switch when in mobile phone, realizing system start-up in the method for the two standby functions of three cards; SIM2 represents the SIM in second deck among the figure; SIM3 represents the SIM in the 3rd deck, and SIM2 value and SIM3 value are predefined two constants, and it may further comprise the steps:
A1) when cell phone system starts; BBP is controlled the single channel selector switch according to the SIM2 or the SIM3 value that from the RTC particular register, read, if what read is the value of SIM2, then makes single channel selector switch connection SIM2; If what read is the value of SIM3; Then make the single channel selector switch connect SIM3, get into the normal start-up routine of SIM, execution in step A2);
A2) after the cell phone system initialization is accomplished; BBP reads the SIM2 or the SIM3 value of storing in the NVRAM memory; And and the value of from the RTC particular register, storing compare: if these two values of a. are unequal; The value that system directly will read from the NVRAM memory is set in the RTC particular register, restarting systems then, execution in step A1); If b. equate, then get into normal operating state;
A3) when the user got into menu selection switching SIM2/SIM3 through mobile phone interface, system preserved SIM2 or SIM3 value that the user selects advance in NVRAM memory and the RTC particular register, points out restarting systems then, execution in step A1).
Claims (10)
1. the mobile phone with the two standby functions of three cards is provided with BBP, the first SIM seat and the second SIM seat in the said hand set machine shell, it is characterized in that, wherein also is provided with Three S's IM deck;
The clock that being used for of said BBP is connected with the SIM seat/reset/data-signal is connected to the input of a multidiameter option switch;
The output of said multidiameter option switch is divided into two groups; First group of clock (11)/(the 12)/data that reset (13) signal is connected with the corresponding signal end of the said first SIM seat; Data-signal (23) in second group of clock (21)/(the 22)/data that reset (23) signal is connected to the input of a single channel selector switch; The output of said single channel selector switch is connected with the data terminal of said second, third SIM seat respectively, and the clock (21) in said second group of clock (21)/(the 22)/data that reset (23) signal/(22) signal that resets then directly is connected with clock, the reset signal end of said second, third SIM seat respectively;
Said BBP is respectively to said multidiameter option switch, single channel selector switch output control signal (1,2), treats that in said three SIM seats, to select first, second deck to be that a combination is two work or first, the 3rd deck are that a combination is two and treat work.
2. the mobile phone with the two standby functions of three cards according to claim 1 is characterized in that said BBP is the GSM chip.
3. the mobile phone with the two standby functions of three cards according to claim 1 is characterized in that, has stored the SIM value in the RTC register of said BBP; Said RTC register keeps the SIM value of storage constant under the situation that mobile phone does not cut off the power supply.
4. the mobile phone with the two standby functions of three cards according to claim 1 is characterized in that, has stored the SIM value in the NVRAM memory of said mobile phone terminal; Said NVRAM memory keeps the SIM value of storage constant under the situation of mobile phone outage.
5. a method that in mobile phone, realizes the two standby functions of three cards is characterized in that, comprising:
Select to handle by multichannel; The clock of BBP output/reset/data-signal is divided into two groups; Output to first deck with first group; Second group data-signal (23) is made single channel to be selected to handle; Be divided into two-way (231,232) and output to second, third deck respectively; Clock/reset signal of second group is write in reply with handling, output to second, third deck respectively;
Select to select to handle with single channel through controlling said multichannel, in said three SIM seats, selecting first, second deck is that two work or first, the 3rd decks treated of a combination are that work pair are treated in a combination.
6. method according to claim 5 is characterized in that, said BBP selects processing to control through the RTC register and the SIM value in the NVRAM memory that read mobile phone terminal to said single channel.
7. method according to claim 6; It is characterized in that when cell phone system started, said BBP was through the SIM value in the RTC register that reads mobile phone terminal; To single channel selector switch output control signal, control the switching between said second deck and the 3rd deck.
8. method according to claim 7 is characterized in that, said BBP through reading the SIM value in the NVRAM memory, and compares with SIM value in the said RTC register after system initialization is accomplished, and it is correct that control signal is exported in assurance.
9. method according to claim 6; It is characterized in that; When the user got into menu selection switching SIM2/SIM3 through mobile phone interface, the corresponding SIM value that the user selects in system preserved in NVRAM memory and the RTC particular register, selects processing to control to said single channel.
10. method according to claim 9 is characterized in that, under the situation of mobile phone outage, said BBP guarantees that through reading the SIM value in the NVRAM memory output control signal is correct.
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| CN111556543A (en) * | 2020-06-19 | 2020-08-18 | 展讯通信（上海）有限公司 | SIM card switching circuit and terminal equipment |
| CN111556542A (en) * | 2020-06-19 | 2020-08-18 | 展讯通信（上海）有限公司 | SIM card switching circuit, SIM card switching method and terminal equipment |
| CN112285750A (en) * | 2020-12-28 | 2021-01-29 | 湖南联智科技股份有限公司 | Operator signal intensity and GNSS positioning resolving precision detection device |
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