CN201904819U - Three-card double-standby mobile phone - Google Patents
Three-card double-standby mobile phone Download PDFInfo
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- CN201904819U CN201904819U CN2010206790082U CN201020679008U CN201904819U CN 201904819 U CN201904819 U CN 201904819U CN 2010206790082 U CN2010206790082 U CN 2010206790082U CN 201020679008 U CN201020679008 U CN 201020679008U CN 201904819 U CN201904819 U CN 201904819U
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Abstract
The utility model discloses a three-card double-standby mobile phone, which comprises three SIM (Subscriber Identity Module) card seats and realizes simultaneous standby with two phone cards. In the utility model, a one-way select switch is additionally arranged on a data cable (23) of the second SIM card seat in a double-card double-standby circuit, a baseband processor can choose the first SIM card seat and the second SIM card seat as a combination to conduct double-standby work or choose the first SIM card seat and the third SIM card seat as a combination to conduct double-standby work according to the requirements of users, so that the users can conveniently use three SIM cards through switching.
Description
Technical field
The utility model relates to a kind of mobile phone, relates in particular to a kind of mobile phone with the two standby functions of three cards.
Background technology
In order to understand the utility model 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 allow all parts of the world can use a mobile telephone network standard jointly, allows 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.
Baseband processor 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.Baseband processor also is baseband chip, and different baseband processor is supported different communication standards, based on the baseband chip of gsm communication standard, also is the GSM chip usually.
SIM card 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 card is when being connected with mobile phone, 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, be connected with the corresponding signal end of SIM card 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 by file system, therefore wants to visit NVRAM, must finish the file system normal visit of ability afterwards NVRAM by first system initialization.
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 card seat, its technical scheme as shown in Figure 1, power supply/ground/clock that being used for of baseband processor is connected with SIM card/reset/data-signal is connected directly to the corresponding signal end of SIM card seat.This is prevailing mobile communication method, has only a SIM card standby.
Two cards mobile phone singly to be referred to has two SIM card seats, can insert two SIM cards, but the user can only select a SIM card standby by mobile phone interface.Its concrete technical scheme as shown in Figure 2, the clock of the clock that being used for of baseband processor is connected with SIM card/reset/data-signal/reset signal directly is connected with clock, the reset signal end of first, second SIM card seat respectively.The data-signal of the clock that being used for of baseband processor is connected with SIM card/reset/data-signal is divided into two-way by a single channel selector switch, one the tunnel connects the data-signal end of the first SIM card seat, other one the tunnel connects the data-signal end of the second SIM card seat, and baseband processor is controlled the single channel selector switch by control signal and selected SIM1 or SIM2 standby.
Double-card dual-standby refers to that mobile phone has two SIM card seats, and the standby simultaneously of two SIM cards.Its operation principle is that baseband processor is passed through constantly switching mutually between two networks of SIM card 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 as shown in Figure 3, the clock that being used for of baseband processor is connected with SIM card/reset/data-signal is connected with the clock of two SIM card seats/reset/data-signal end respectively by a multidiameter option switch, and baseband processor is controlled multidiameter option switch by control signal and selected SIM1 or SIM2 communication.
Existing these technical schemes can only realize double-card dual-standby at most, just simultaneously can only support two SIM card on hardware, if the user has three SIM card 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 card, very inconvenient.
This shows that for the user of three SIM card is conveniently arranged, urgent need will be improved prior art.
The utility model content
The technical problems to be solved in the utility model is to overcome the defective that prior art can not be used three SIM card simultaneously, and a kind of mobile phone with the two standby functions of three cards is provided.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of mobile phone with the two standby functions of three cards is provided with baseband processor, the first SIM card seat, the second SIM card seat and Three S's IM deck in the described hand set machine shell; The clock that being used for of described baseband processor is connected with the SIM card seat/reset/data-signal is connected to the input of a multidiameter option switch; The output of described multidiameter option switch is divided into two groups, first group of clock/reset/data-signal is connected with the corresponding signal end of the described first SIM card 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 described single channel selector switch is connected with the data terminal of described second, third SIM card seat respectively, and the clock/reset signal in described second group of clock/reset/data-signal then directly is connected with clock, the reset signal end of described second, third SIM card seat respectively.Described baseband processor is respectively to described multidiameter option switch, single channel selector switch output control signal, treats that to select first, second deck to be that a combination is two in described three SIM card seats 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 described in the utility model, described mobile phone baseband processor is the GSM chip.
In the mobile phone with the two standby functions of three cards described in the utility model, described baseband processor is provided with the RTC register of having stored the SIM value; Described 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 described in the utility model, described mobile phone terminal is provided with the NVRAM memory of having stored the SIM value; Described NVRAM memory keeps the SIM value of storage constant under the situation of mobile phone outage.
The utlity model has following advantage: the first, production cost is low, and the mobile phone with the two standby functions of three cards of the present utility model has only increased a single channel selector switch and a SIM card seat in existing double-card dual-standby circuit, and production cost increases little.The second, simple to operate, the user can change SIM card or buy new cell-phone, just can use three SIM card simultaneously.
The utility model 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, by the technical program, the cellphone subscriber can select to use two standbies simultaneously in three SIM card.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit connection diagram that existing single deck tape-recorder list is treated the mobile phone technique scheme;
Fig. 2 is the circuit connection diagram that existing two card is singly treated the mobile phone technique scheme;
Fig. 3 is the circuit connection diagram of existing double card double standby mobile phone technical scheme;
Fig. 4 is the circuit connection diagram of the utility model three card double standby mobile phone technical schemes;
Fig. 5 is the utility model flow chart during the SIM card mode switch when realizing system start-up in the method for the two standby functions of three cards in mobile phone.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 4, a kind of mobile phone with the two standby functions of three cards is provided with baseband processor, the first SIM card seat, the second SIM card seat and Three S's IM deck in the described hand set machine shell; The clock that being used for of described baseband processor is connected with the SIM card seat/reset/data-signal is connected to the input of a multidiameter option switch; The output of described 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 described first SIM card 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, data 23 signals that described second group of clock 21/ resets in 22/ data, 23 signals are divided into two-way 231 through the single channel selector switch, 232, respectively with described second, the data terminal of Three S's IM deck connects, and the clock 21/ that described second group of clock 21/ resets in 22/ data, 23 signals resets 22 signals then respectively directly with described second, the clock of Three S's IM deck, the reset signal end connects.Described baseband processor is respectively to described multidiameter option switch, single channel selector switch output control signal 1,2, treats that to select first, second deck to be that a combination is two in described three SIM card seats work or first, the 3rd deck are that a combination is two and treat work.
Described mobile phone baseband processor is the GSM chip.
Described baseband processor is provided with the RTC register of having stored the SIM value; Described RTC register keeps the SIM value of storage constant under the situation that mobile phone does not cut off the power supply.
Described mobile phone terminal is provided with the NVRAM memory of having stored the SIM value; Described 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 card seat of in existing double-card dual-standby circuit, only having increased, make the mobile phone that the utlity model has the two standby functions of three cards on hardware, can support the user to use three SIM card simultaneously.
Mobile phone with the two standby functions of three cards described in the utility model, its system works principle is:
1, when the user entered menu selection switching SIM2/SIM3 by mobile phone interface, baseband processor was provided with two predefined SIM values, for example, selects SIM2 with the VA representative of consumer, with VB representative of consumer selection SIM3.After the user selected, baseband processor 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 when the SIM mode switch is in system start-up, system initialization is not also finished, 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 may 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 baseband processor 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 the system start-up, because the value of having stored SIM2 or SIM3 in the RTC particular register of mobile phone baseband processor, baseband processor 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, enter normal start-up routine;
4, after system initialization is finished, baseband processor reads 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 enter normal operating state;
5, when the user enters menu selection switching SIM2/SIM3 by 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 according to the value that reads.
In concrete the application, be the utility model flow chart during the SIM card mode switch when in mobile phone, realizing system start-up in the method for the two standby functions of three cards as shown in Figure 5, SIM2 represents the SIM card in second deck among the figure, SIM3 represents the SIM card in the 3rd deck, SIM2 value and SIM3 value are predefined two constants, and it may further comprise the steps:
A1) when cell phone system starts, baseband processor is controlled the single channel selector switch according to the SIM2 or the SIM3 value that read from the RTC particular register, 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, enter the normal start-up routine of SIM card, execution in step A2);
A2) after the cell phone system initialization is finished, baseband processor 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 enter normal operating state;
A3) when the user entered menu selection switching SIM2/SIM3 by 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 (4)
1. the mobile phone with the two standby functions of three cards is provided with baseband processor, the first SIM card seat and the second SIM card seat in the described 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 described baseband processor is connected with the SIM card seat/reset/data-signal is connected to the input of a multidiameter option switch;
The output of described 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 described first SIM card 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 described single channel selector switch is respectively with described second, the data terminal of Three S's IM deck connects, and the clock (21) in described second group of clock (21)/(the 22)/data that reset (23) signal/(22) signal that resets is then respectively directly with described second, the clock of Three S's IM deck, the reset signal end connects;
Described baseband processor is respectively to described multidiameter option switch, single channel selector switch output control signal (1,2), treats that to select first, second deck to be that a combination is two in described three SIM card seats 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 described baseband processor is the GSM chip.
3. the mobile phone with the two standby functions of three cards according to claim 1 is characterized in that described baseband processor is provided with the RTC particular register of having stored the SIM value; Described 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 described mobile phone terminal is provided with the NVRAM memory of having stored the SIM value; Described NVRAM memory keeps the SIM value of storage constant under the situation of mobile phone outage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206790082U CN201904819U (en) | 2010-12-24 | 2010-12-24 | Three-card double-standby mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206790082U CN201904819U (en) | 2010-12-24 | 2010-12-24 | Three-card double-standby mobile phone |
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| CN201904819U true CN201904819U (en) | 2011-07-20 |
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| CN2010206790082U Expired - Lifetime CN201904819U (en) | 2010-12-24 | 2010-12-24 | Three-card double-standby mobile phone |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548046A (en) * | 2010-12-24 | 2012-07-04 | 深圳市经纬科技有限公司 | Three-card dual-standby mobile phone and method of realizing three-card dual-standby function in same |
| CN105100371A (en) * | 2014-04-29 | 2015-11-25 | 富泰华工业（深圳）有限公司 | Communication switching system and communication switching method |
| WO2017181679A1 (en) * | 2016-04-22 | 2017-10-26 | 宇龙计算机通信科技(深圳)有限公司 | Method for configuring working sim card of communication terminal, and communication terminal |
| 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 |
| 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 |
| CN111741150A (en) * | 2020-06-19 | 2020-10-02 | 展讯通信（上海）有限公司 | SIM card switching circuit, SIM card switching method and terminal equipment |
| CN112187303A (en) * | 2020-09-23 | 2021-01-05 | 深圳联想懂的通信有限公司 | SIM card expansion equipment, SIM card switching method and device |
-
2010
- 2010-12-24 CN CN2010206790082U patent/CN201904819U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548046A (en) * | 2010-12-24 | 2012-07-04 | 深圳市经纬科技有限公司 | Three-card dual-standby mobile phone and method of realizing three-card dual-standby function in same |
| CN102548046B (en) * | 2010-12-24 | 2017-05-03 | 深圳市经纬科技有限公司 | Three-card dual-standby mobile phone and method of realizing three-card dual-standby function in same |
| CN105100371A (en) * | 2014-04-29 | 2015-11-25 | 富泰华工业（深圳）有限公司 | Communication switching system and communication switching method |
| CN105100371B (en) * | 2014-04-29 | 2019-06-28 | 富泰华工业（深圳）有限公司 | Communication handover system and communication handover method |
| WO2017181679A1 (en) * | 2016-04-22 | 2017-10-26 | 宇龙计算机通信科技(深圳)有限公司 | Method for configuring working sim card of communication terminal, and communication terminal |
| 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 |
| 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 |
| CN111741150A (en) * | 2020-06-19 | 2020-10-02 | 展讯通信（上海）有限公司 | SIM card switching circuit, SIM card switching method and terminal equipment |
| CN112187303A (en) * | 2020-09-23 | 2021-01-05 | 深圳联想懂的通信有限公司 | SIM card expansion equipment, SIM card switching method and device |
| CN112187303B (en) * | 2020-09-23 | 2021-09-07 | 深圳联想懂的通信有限公司 | SIM card expansion equipment, SIM card switching method and device |
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Granted publication date: 20110720 |
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