CN111697987B - Electronic device - Google Patents
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- CN111697987B CN111697987B CN202010567779.0A CN202010567779A CN111697987B CN 111697987 B CN111697987 B CN 111697987B CN 202010567779 A CN202010567779 A CN 202010567779A CN 111697987 B CN111697987 B CN 111697987B
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- baseband chip
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- electronic device
- sim card
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- 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
Abstract
The embodiment of the application provides electronic equipment, which comprises a first baseband chip, a second baseband chip, a first SIM card slot, a second SIM card slot, a third SIM card slot, a first selector, a second selector and a third selector, wherein the first baseband chip is in communication connection with the second baseband chip through a UART bus, a first interface of the first baseband chip is connected with the first selector and the first SIM card slot in series, a second interface of the first baseband chip is connected with the second selector and the second SIM card slot in series, a third interface of the second baseband chip is connected with the third selector and the third SIM card slot in series, and the first selector or the second selector is connected with the third selector. The embodiment of the application can realize the three-card three-standby function and can also realize the random switching among the three SIM cards.
Description
Technical Field
The embodiment of the application relates to the technical field of mobile communication, in particular to an electronic device.
Background
At present, with the change of living habits and working requirements, more and more Subscriber Identity Modules (SIMs) are owned by one Subscriber.
At present, some mobile phones in the market have dual-card dual-standby functions, that is, two SIMs can be installed in one mobile phone for use. However, with the development of various new wireless mobile applications, the dual-card dual-standby has been gradually unable to meet the user requirements, and the product requirements of three-card three-standby have appeared.
However, how to implement the three-card three-standby function and switch between three SIM cards at will still need to be solved.
Disclosure of Invention
The embodiment of the application provides electronic equipment, which can realize three-card three-standby function and can switch among three SIM cards at will.
Specifically, the electronic device includes a first baseband chip, a second baseband chip, a first Subscriber Identity Module (SIM) card slot, a second SIM card slot, a third SIM card slot, a first selector, a second selector and a third selector, wherein the first baseband chip and the second baseband chip are in communication connection via a Universal Asynchronous Receiver/Transmitter (UART) bus;
the first baseband chip is provided with a first interface and a second interface, the first selector and the first SIM card slot are sequentially connected in series, and the second interface, the second selector and the second SIM card slot are sequentially connected in series; the second baseband chip is provided with a third interface, and the third interface, the third selector and the third SIM card slot are sequentially connected in series;
the first selector or the second selector is connected with the third selector.
In a possible design, the first baseband chip supports a Voice over Long-Term Evolution (VOLTE) service, and the first baseband chip has control permissions of the first selector, the second selector, and the third selector.
In one possible design, clock synchronization is maintained between the first baseband chip and the second baseband chip.
In a possible design manner, a system program of the electronic device is written into the first baseband chip in a manner of sharing memory data, where the memory data includes the system program.
In one possible embodiment, the electronic device further includes a first data switch;
the first end of the first data switch is connected with the first baseband chip, and the second end of the first data switch is connected with the interface of the electronic equipment;
and when the first data switch is in an on state, the system program of the electronic equipment is written into the first baseband chip through the interface of the electronic equipment.
In a possible design manner, the system program of the electronic device is written into the first baseband chip through the interface of the electronic device in a USB data transmission downloading manner.
In one possible embodiment, the second baseband chip loads the system program from the first baseband chip.
In one possible embodiment, the electronic device further includes a second data switch;
a first end of the second data switch is connected with the second baseband chip, and a second end of the second data switch is connected with an interface of the electronic device;
and when the first data switch is in a closed state and the second data switch is in an open state, the system program is written into the second baseband chip through an interface of the electronic equipment.
In a possible design manner, the electronic device further includes a USB download test point, the USB download test point is connected to the second baseband chip, and the system program is written into the second baseband chip through the USB download test point.
In one possible embodiment, the model of the first baseband chip is the same as or different from the model of the second baseband chip.
The embodiment of the application provides electronic equipment which comprises two baseband chips, three SIM card slots and three selectors, wherein one baseband chip is connected with the two SIM card slots, the other baseband chip is connected with one SIM card slot, and the two baseband chips are in communication connection through a UART bus, so that service data interaction can be performed between the two baseband chips, and a three-card three-standby function is realized; meanwhile, a selector is arranged between each SIM card slot and the baseband chip, and the selector can be used for switching the SIM card slots, so that the free switching among the three SIM cards is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a first schematic hardware structure diagram of an electronic device according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure;
fig. 4 is a hardware structure diagram of an electronic device according to an embodiment of the present disclosure;
fig. 5 is a fifth hardware structure schematic diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It will be understood by those within the art that the term "comprises/comprising" when used in the specification of this application is taken to specify the presence of stated features, elements and/or components, but does not preclude the presence or addition of one or more other features, elements, components and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
At present, there are some network users who need to use three SIM cards simultaneously, in order to solve the diversified needs of these network users, although there are some technical solutions for implementing three cards and three standby in the prior art, it is usually implemented by connecting a baseband chip with a plurality of single processing chips, but this implementation method needs to configure an independent associated circuit for each single processing chip, the circuit layout process is complex, and the power consumption is high.
In order to solve the above technical problem, an embodiment of the present application provides an electronic device, where the electronic device employs two baseband chips, three SIM card slots, and three selectors, where one baseband chip is connected to two SIM card slots, and the other baseband chip is connected to one SIM card slot, and the two baseband chips are connected through UART bus communication, so that service data interaction between the two baseband chips can be performed, and a three-card three-standby function is implemented; meanwhile, a selector is arranged between each SIM card slot and the baseband chip and can be used for selecting the SIM cards, so that the three SIM cards can be freely switched.
Optionally, the electronic device may be various mobile devices with a wireless communication function, such as a mobile phone, a Personal Digital Assistant (PDA for short), a wearable device, and the like, which is not limited in this embodiment of the present application.
The electronic device generally includes a storage and processing circuit, which may include a memory, such as a hard disk drive memory, a non-volatile memory (e.g., a flash memory or other electronic programmable read-only memory used to form a solid state drive, etc.), a volatile memory (e.g., a static or dynamic random access memory, etc.), and the like, and the embodiments of the present application are not limited thereto. Processing circuitry in the storage and processing circuitry may be used to control the operation of the electronic device.
The baseband chip is also commonly referred to as a baseband processor, and is used to synthesize a baseband signal to be transmitted or decode a received baseband signal, and mainly performs an information processing function of the communication terminal. Meanwhile, the baseband chip is also responsible for compiling address information, character information, picture information and the like. The baseband chip may be typically divided into five sub-blocks: CPU processor, channel encoder, digital signal processor, modem and interface section.
The CPU processor controls and manages the whole mobile station, including timing control, digital system control, radio frequency control, power saving control, man-machine interface control and the like. If frequency hopping is used, control of frequency hopping should also be included. Meanwhile, the CPU processor completes all software functions of the electronic equipment.
The channel encoder mainly completes channel encoding, encryption and the like of the service information and the control information.
The digital signal processor mainly performs channel equalization and speech encoding/decoding.
The modulator/demodulator mainly implements the modulation/demodulation mode required by the communication system.
The interface part comprises three sub-blocks of an analog interface, a digital interface and an auxiliary interface. The analog interface comprises a voice input/output interface, a radio frequency control interface and the like; the auxiliary interface comprises a collection interface for analog quantity such as battery electric quantity, battery temperature and the like; the digital interface includes a system interface, a SIM card slot interface, a test interface, an Electrically Erasable Programmable Read Only Memory (EEPROM) interface, a memory interface, and the like.
The SIM card is also called a user identification card or a smart card, and is a communication module provided by a network operator to a user according to a request of the user, so that the network user can use data and a communication circuit on the SIM card to implement network communication with an operator network, thereby implementing network communication service application of the terminal device.
The SIM card may include SIM cards of various specifications and standards, and is not limited in this embodiment as long as the user can be identified according to the information of the SIM card.
For example, in the supported network mode, the SIM card may be a common SIM card, or may also be a Universal Subscriber Identity Module (USIM card); in terms of card size, the SIM card may be a standard SIM card with a size of 25mm × 15mm, a small SIM card with a size of 12mmx15mm (i.e., Micro SIM), or a Micro SIM card with a size of 12mmx9mm (i.e., Nano SIM).
It should be noted that the SIM card described in this embodiment of the application may be a SIM card applied to a second generation mobile communication technology (2nd generation, 2G) network, a SIM card applied to a third generation mobile communication technology (3rd generation, 3G) network (such as a Universal Subscriber Identity Module (USIM)), a SIM card applied to a fourth generation mobile communication technology (4th generation, 4G) network, or a SIM card applied to a fifth generation mobile communication technology (5th generation, 5G) network.
The three-card three-standby function of the electronic device described in the embodiment of the present application means that the electronic device can simultaneously install three SIM cards, or simultaneously implant three SIM chips, and the three SIM cards or the SIM chips can simultaneously standby to provide a wireless communication service for a network user.
Referring to fig. 1, fig. 1 is a first schematic diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure, in a possible implementation manner of the present disclosure, the electronic device includes:
a first baseband chip 10, a second baseband chip 20, a first SIM card slot 101, a second SIM card slot 102, a third SIM card slot 201, a first selector 103, a second selector 104, and a third selector 203.
The first baseband chip 10 and the second baseband chip 20 are both provided with a UART bus interface, the UART bus interface on the first baseband chip 10 and the UART bus interface on the second baseband chip 20 are in communication connection through a UART bus, and the UART bus can be used for transmitting service data between the first baseband chip 10 and the second baseband chip 20.
The UART is a general serial data bus that can be used for asynchronous communication. And the bus can be communicated in two directions, and full duplex transmission and reception can be realized.
Optionally, the first baseband chip 10 and the second baseband chip 20 are further provided with a USB interface, and the USB interface may be used for downloading a system program in the first baseband chip 10 and the second baseband chip 20, where the system program is a system program preinstalled before the electronic device leaves a factory.
The first baseband chip 10 is provided with a first interface SIM1 and a second interface SIM2, the first interface SIM1, the first selector 103 and the first SIM card slot 101 are sequentially connected in series, and the second interface SIM2, the second selector 104 and the second SIM card slot 102 are sequentially connected in series.
The second baseband chip 20 is provided with a third interface SIM3, and the third interface SIM3, the third selector 203 and the third SIM card slot 201 are sequentially connected in series.
Optionally, the third selector 203 is connected to the first selector 103. Alternatively, the third selector 203 may be connected to the second selector 104 (not shown in the drawings).
It is understood that in the present application, the first baseband chip 10 may be connected to only one SIM card slot, and the second baseband chip 20 may be connected to two SIM card slots.
In order to better understand the present application, referring to fig. 2, fig. 2 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application, and in another possible implementation manner of the present application, the electronic device includes:
a first baseband chip 10, a second baseband chip 20, a first SIM card slot 101, a second SIM card slot 201, a third SIM card slot 202, a first selector 103, a second selector 203, and a third selector 204.
The first baseband chip 10 is provided with a first interface SIM1, and the first interface SIM1, the first selector 103, and the first SIM card slot 101 are sequentially connected in series. The second baseband chip 20 is provided with a second interface SIM2 and a third interface SIM3, the second interface SIM2, the second selector 203 and the second SIM card slot 201 are sequentially connected in series, and the third interface SIM3, the third selector 204 and the third SIM card slot 202 are sequentially connected in series.
The first selector 103 may be connected to the second selector 203 and the third selector 203 at the same time. Alternatively, the first selector 103 may be connected to any one of the second selector 203 and the third selector 203 (not shown in the drawings).
The selector may be a switch, which may be controlled by software or manually.
In the embodiment of the present application, the first baseband chip 10 and the second baseband chip 20 may both support multiple network systems, including a 2G network, a 3G network, a 4G network, a 5G network, a WiFi network, and the like.
Illustratively, the first baseband chip 10 and the second baseband chip 20 may each support at least one or more of the following communication systems:
global System For Mobile communications (GSM), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) System, Wideband Code Division Multiple Access (WCDMA) System, Code Division Multiple Access (CDMA) 2000 System, Long Term Evolution (LTE) System, Advanced Long Term Evolution (LTE-a) System, New Radio (NR) System, Evolution System of NR System, LTE-based Access to unlicensed spectrum System, NR-based general Access to Mobile Radio (UMTS-U) System, UMTS-based Mobile communication System, UMTS-Universal Mobile telecommunications System (UMTS-Mobile telecommunications System, UMTS-Local Area telecommunications System, UMTS-Wireless telecommunications System, Wireless telecommunications network (WCDMA) System, WCDMA System, Code Division Multiple Access (Code Division Multiple Access, CDMA) System, LTE-a System, New Radio (NR) System, Evolution System, LTE-based Access to unlicensed spectrum System, LTE-U) System, NR-based unlicensed spectrum System, and Wireless telecommunications System (NR-based Access to Mobile telecommunications System, UMTS-Wireless telecommunications System, UMTS-based Wireless telecommunications System, UMTS-Wireless telecommunications System, LTE-a Wireless telecommunications System, and Wireless telecommunications System, Wireless Fidelity (WiFi), next generation communication systems or other communication systems, and the like.
Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario. In particular, the above communication system may be applied to a carrier aggregation scenario above CAT 6, such as a CAT 12 carrier aggregation scenario.
It can be understood that, when the first baseband chip 10 and the second baseband chip 20 both support a 4G network, the electronic device provided in the embodiment of the present application may support three SIM cards to simultaneously stand by in the 4G network.
In the embodiment of the present application, the model of the first baseband chip 10 may be the same as or different from the model of the second baseband chip 20.
When the first baseband chip 10 and the second baseband chip 20 adopt different types of baseband chips, if the first baseband chip 10 adopts a high-performance baseband chip, the second baseband chip 20 may use a baseband chip with a lower performance than the first baseband chip 10, at this time, two SIM cards controlled by the first baseband chip 10 may be used as a main card, and one SIM card controlled by the second baseband chip 20 may be used as a sub card, which is beneficial to reducing the hardware cost of the electronic device.
The SIM card slot may be understood as a card slot for placing various types of SIM cards, and may also be understood as a circuit module for mounting a SIM card chip.
Optionally, the first baseband chip 10 or the second baseband chip 20 supports a high-speed data service, where the high-speed data service includes a traffic data service, a VOLTE service, and the like.
When the first baseband chip 10 supports the high-speed data service, the SIM card connected to the first baseband chip may be used as a data service card, and at this time, if the second baseband chip 20 does not support the high-speed data service, the control right of the selector connected to the second baseband chip 20 is handed over to the first baseband chip 10, that is, the first baseband chip 10 has the control right of three selectors.
It can be understood that, taking the electronic device shown in fig. 1 as an example, assuming that the first baseband chip 10 is capable of supporting data services, when the electronic device needs to switch to a SIM card in the first SIM card slot 101, the first baseband chip 10 only needs to control the first selector 103 to enable the SIM card in the first SIM card slot 101 to access the communication network; when the electronic device needs to switch to the SIM card in the third SIM card slot 201, the first baseband chip 10 only needs to control the first selector 103 and the third selector 203 at the same time, so that the SIM card in the third SIM card slot 201 can be accessed to the communication network, thereby realizing free switching between the three SIM cards.
Wherein, the first baseband chip 10 and the second baseband chip 20 maintain clock synchronization.
Optionally, the AP _ CP _ Req pin 105 of the first baseband chip 10 is communicatively connected to the AP _ CP _ Req pin 205 of the second baseband chip 20; the CP _ AP _ Req pin 106 of the first baseband chip 10 is communicatively connected to the CP _ AP _ Req pin 206 of the second baseband chip 20.
Optionally, the integrated audio interface 107(IIS) of the first baseband chip 10 is communicatively connected to the integrated audio interface 207 of the second baseband chip 20.
Optionally, WDG FLAG interface 108 of first baseband chip 10 is communicatively coupled to WDG FLAG interface 208 of second baseband chip 20.
Optionally, the MODEM _ ALIVE interface 109 of the first baseband chip 10 is communicatively connected to the MODEM _ ALIVE interface 209 of the second baseband chip 20; the MODEM _ RESET interface 1010 of the first baseband chip 10 is communicatively connected to the MODEM _ RESET interface 2010 of the second baseband chip 20.
It should be understood that the first baseband chip 10 and the second baseband chip 20 further include other pins and interfaces, only some of the pins and interfaces are illustrated in this embodiment, and other pins and interfaces on the baseband chip are well known to those skilled in the art, and are not described in detail in this embodiment.
The electronic equipment provided by the embodiment of the application comprises two baseband chips, three SIM card slots and three selectors, wherein one baseband chip is connected with the two SIM card slots, the other baseband chip is connected with one SIM card slot, and the two baseband chips are in communication connection through a UART bus, so that service data interaction can be performed between the two baseband chips, and a three-card three-standby function is realized; meanwhile, a selector is arranged between each SIM card slot and the baseband chip, and the selector can be used for switching the SIM card slots, so that the free switching among the three SIM cards is realized.
Based on the content described in the foregoing embodiment, referring to fig. 3, fig. 3 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application, where the electronic device further includes a first data switch SW 1.
A first terminal of the first data switch SW1 is connected to the first baseband chip 10, and a second terminal of the first data switch is connected to the interface 30 of the electronic device. When the first data switch SW1 is in the on state, the system program of the electronic device is written into the first baseband chip 10 through the interface 30 of the electronic device.
The interface 30 of the electronic device may be a Micro USB interface, a Lightning interface, a Type C interface, etc., and the electronic device may be connected to other external devices through the interface 30.
The first data switch SW1 may be a switch, which may be controlled by software or manually.
The system program may be understood as system software that needs to be written on the first baseband chip 10 and the second baseband chip 20 before the electronic device leaves a factory, and may refer to a set of various programs that are used for controlling and coordinating a communication system in the electronic device and do not need user intervention, and are used for managing various independent hardware in the electronic device so that they may work in coordination.
Alternatively, the first data switch SW1 may be connected to the USB interface of the first baseband chip 10 and the general purpose input/output interface (GPIO)1011 at the same time.
In a possible implementation manner, when the interface 30 of the electronic device is connected to a storage device (such as a computer or the like) storing the system program, the system program of the electronic device may be written into the first baseband chip 10 from the interface 30 of the electronic device by a USB data transmission downloading manner. Wherein the second baseband chip 20 loads the system program from the first baseband chip 10.
In another possible embodiment, the system program of the electronic device may also be written into the first baseband chip 10 by sharing memory data, where the memory data includes the system program. Wherein the second baseband chip 20 can load the above system program from the first baseband chip 10.
In the embodiment of the present application, the system program is written into the first baseband chip 10 and the second baseband chip 20 in the above manner, which not only reduces the number of data switches, but also effectively simplifies the USB circuit.
Based on the content described in the foregoing embodiment, referring to fig. 4, fig. 4 is a schematic diagram of a hardware structure of an electronic device provided in an embodiment of the present application, and in another possible embodiment of the present application, the electronic device further includes a first data switch SW 2.
A first terminal of the second data switch SW2 is connected to the second baseband chip 20, and a second terminal of the second data switch SW2 is connected to the interface 30 of the electronic device.
Alternatively, the second data switch SW2 may be connected to the USB interface of the second baseband chip 20 and the general purpose input/output interface 1012(GPIO) of the first baseband chip 10 at the same time.
When the first data switch SW1 is in the off state and the second data switch SW2 is in the on state, the system program is written into the second baseband chip 20 through the interface of the electronic device.
Optionally, the electronic device further includes a third data switch SW3, and the third data switch SW3 is connected to the U1TXD pin 2011 of the second baseband chip 20. When the first data switch SW1 is in the off state and the third data switch SW3 is in the on state, the above system program can be written to the second baseband chip 20 through boot.
That is, in another possible embodiment, the system program can directly write to the second baseband chip 20 through the USB interface on the second baseband chip 20.
Based on the content described in the foregoing embodiment, referring to fig. 5, fig. 5 is a schematic diagram of a hardware structure of an electronic device provided in an embodiment of the present application, in yet another possible embodiment of the present application, the electronic device further includes a USB download test point 50, the USB download test point 50 is connected to the second baseband chip 20, and the system program is written into the second baseband chip 20 through the USB download test point 50.
Wherein, the USB download test point 50 is connected to the USB interface of the second baseband chip 20.
In this embodiment, the USB download test point 50 may be set on the second baseband chip 20 in advance, and then the system program may be written into the second baseband chip 20 by using a fixture before the electronic device leaves the factory.
The electronic device described in the above embodiment includes two baseband chips, three SIM card slots, and three selectors, where one baseband chip is connected to two SIM card slots, and the other baseband chip is connected to one SIM card slot, and the two baseband chips are connected through UART bus communication, so that service data interaction can be performed between the two baseband chips, and a three-card three-standby function is implemented. In addition, the electronic device described in the embodiment of the present application can write the system program into the first baseband chip and the second baseband chip in multiple ways, and the implementation manner is flexible.
It is to be understood that the terms "first," "second," "third," and the like in the description herein are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the designations used as such may be interchanged under appropriate circumstances in order to facilitate describing the embodiments of the application.
In the several embodiments provided in the present application, it should be understood that the disclosed electronic device may be implemented in other ways. For example, the above-described embodiments of the electronic device are merely illustrative, and for example, the division of the interface is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The module integrated unit can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (7)
1. An electronic device is characterized by comprising a first baseband chip, a second baseband chip, a first SIM card slot, a second SIM card slot, a third SIM card slot, a first selector, a second selector and a third selector, wherein the first baseband chip is in communication connection with the second baseband chip through a Universal Asynchronous Receiver Transmitter (UART) bus;
the first baseband chip is provided with a first interface and a second interface, the first selector and the first SIM card slot are sequentially connected in series, and the second interface, the second selector and the second SIM card slot are sequentially connected in series; the second baseband chip is provided with a third interface, and the third interface, the third selector and the third SIM card slot are sequentially connected in series;
the first selector or the second selector is connected with the third selector;
the first baseband chip supports VOLTE service of long-term evolution voice bearer, and the first baseband chip has control authority of the first selector, the second selector and the third selector;
writing a system program of the electronic equipment into the first baseband chip in a mode of sharing memory data, wherein the memory data comprises the system program;
alternatively, the first and second electrodes may be,
the electronic device further comprises a first data switch;
the first end of the first data switch is connected with the first baseband chip, and the second end of the first data switch is connected with the interface of the electronic equipment;
and when the first data switch is in an on state, the system program of the electronic equipment is written into the first baseband chip through the interface of the electronic equipment.
2. The electronic device of claim 1, wherein clock synchronization is maintained between the first baseband chip and the second baseband chip.
3. The electronic device according to claim 1, wherein the system program of the electronic device is written into the first baseband chip through an interface of the electronic device in a USB data transmission downloading manner.
4. The electronic device according to any one of claims 1 to 3, wherein the second baseband chip loads the system program from the first baseband chip.
5. The electronic device of any of claims 1-3, further comprising a second data switch;
a first end of the second data switch is connected with the second baseband chip, and a second end of the second data switch is connected with an interface of the electronic device;
and when the first data switch is in a closed state and the second data switch is in an open state, the system program is written into the second baseband chip through an interface of the electronic equipment.
6. The electronic device according to any one of claims 1 to 3, further comprising a USB download site, wherein the USB download site is connected to the second baseband chip, and the system program is written into the second baseband chip through the USB download site.
7. The electronic device of claim 1, wherein a model of the first baseband chip is the same as or different from a model of the second baseband chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101604252A (en) * | 2009-07-10 | 2009-12-16 | 深圳华为通信技术有限公司 | Multicomputer system and multicomputer system startup method |
| CN209218412U (en) * | 2018-12-28 | 2019-08-06 | 上海寰创通信科技股份有限公司 | A kind of SIM card switching circuit applied in rail communication equipment |
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| CN102158599B (en) * | 2011-03-15 | 2013-09-04 | 上海艾为电子技术有限公司 | Wireless terminal and multi-SIM (subscriber identity module) card connecting device thereof |
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| CN101448345A (en) * | 2008-12-08 | 2009-06-03 | 北京百纳威尔科技有限公司 | Mobile terminal and stand-by switching method thereof |
| CN101604252A (en) * | 2009-07-10 | 2009-12-16 | 深圳华为通信技术有限公司 | Multicomputer system and multicomputer system startup method |
| CN209218412U (en) * | 2018-12-28 | 2019-08-06 | 上海寰创通信科技股份有限公司 | A kind of SIM card switching circuit applied in rail communication equipment |
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