WO2019184982A1 - 信号的传输方法和电路 - Google Patents

信号的传输方法和电路 Download PDF

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Publication number
WO2019184982A1
WO2019184982A1 PCT/CN2019/080103 CN2019080103W WO2019184982A1 WO 2019184982 A1 WO2019184982 A1 WO 2019184982A1 CN 2019080103 W CN2019080103 W CN 2019080103W WO 2019184982 A1 WO2019184982 A1 WO 2019184982A1
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Prior art keywords
signal
sim card
vcc
circuit
chip
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PCT/CN2019/080103
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English (en)
French (fr)
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邵玉萍
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上海中兴软件有限责任公司
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Publication of WO2019184982A1 publication Critical patent/WO2019184982A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier

Definitions

  • the present disclosure relates to the field of communication technologies, for example, to a signal transmission method and circuit.
  • the traditional telematics processor (Telematics BOX, TBOX) vehicle product has built-in embedded user identification card (eSIM) chip for voice call, Internet access and other services.
  • eSIM embedded user identification card
  • the concept of the so-called eSIM card is to embed a traditional Subscriber Identification Module (SIM) card directly into the device chip instead of being added as a separate removable component.
  • SIM Subscriber Identification Module
  • the eSIM chip is used to bring more convenience and security to the user.
  • the eSIM has an abnormal situation such as arrears or chip damage, if the SIM card is redundant on the TBOX, it can be used as a contingency plan to solve the unexpected situation. .
  • the TBOX has complete structural parts, and will be placed in the sealed engine compartment of the car. If the redundant SIM card holder is placed on the TBOX body, it is not convenient for the user to perform SIM card insertion and removal operations, and the user cannot quickly respond in an emergency. Open the engine compartment, so you need to place the SIM card in a location that is easy for users to access and plug in. This will result in a certain distance between the SIM card and the TBOX body. The SIM card signal passes through the TBOX main processor baseband chip and passes through the far distance. Distance transmission will inevitably cause signal distortion and weak anti-interference ability.
  • the SIM card signal in the main device has a problem of signal difference due to a long transmission distance, and there is no effective solution.
  • the present disclosure provides a signal transmission method and circuit to at least solve the problem of a signal difference caused by a long transmission distance of a SIM card signal in a main device in the related art.
  • the present disclosure provides a signal transmission method, comprising: a conversion chip receiving a SIM card signal output by a baseband chip; a conversion chip converting the SIM card signal to a high level signal, and transmitting the high level signal to a SIM card identification a circuit; the SIM card identification circuit identifies the high level signal as the SIM card signal.
  • the present disclosure also provides a circuit comprising: a baseband chip, a conversion chip, and a SIM card identification circuit, the baseband chip being configured to output a SIM card signal to the conversion chip; the conversion chip being connected to the baseband chip, the conversion The chip is configured to convert the SIM card signal to a high level signal, and transmit the high level signal to the SIM card identification circuit; the SIM card identification circuit is connected to the conversion chip, and the SIM card identification circuit It is arranged to identify the high level signal as the SIM card signal.
  • FIG. 1 is a flowchart of a method for transmitting a signal according to an embodiment
  • FIG. 2 is a block diagram of a signal level conversion circuit according to an embodiment
  • FIG. 3 is a schematic diagram of a comparator circuit according to an embodiment
  • FIG. 4 is a schematic diagram of a dedicated circuit of a SIM card power supply according to an embodiment
  • FIG. 5 is a flowchart of transmitting a SIM card signal according to an embodiment
  • FIG. 6 is a flowchart of identifying a SIM card signal according to an embodiment.
  • FIG. 1 is a flowchart of a method for transmitting a signal according to an embodiment. As shown in FIG. 1, the process includes the following steps.
  • Step S102 the conversion chip receives the SIM card signal output by the baseband chip.
  • Step S104 the conversion chip converts the SIM card signal to a high level signal, and transmits the high level signal to the SIM card identification circuit.
  • Step S106 the SIM card identification circuit recognizes the high level signal as the SIM card signal.
  • the SIM card signal before transmitting the SIM card signal, the SIM card signal is converted into a high level signal by the conversion chip, and a high level signal is transmitted, and the subsequent SIM card identification circuit recognizes the high level signal as a SIM card signal, and adopts the above technology.
  • the scheme transmits a high-level signal, improves the reference voltage, and enhances the anti-interference ability of the signal, and solves the problem that the SIM card signal in the main device has a signal difference due to a long transmission distance, and ensures the signal of the SIM card transmitted over a long distance. quality.
  • the SIM card signal comprises at least one of: a SIM card power signal, a SIM card clock signal, a SIM card reset signal, and a SIM card data signal;
  • the high level signal includes at least one of: and an output voltage A 4.5 volt (V) matched power supply signal, a clock signal that matches the output voltage of 4.5V, a reset signal that matches the output voltage of 4.5V, and a data signal that matches the output voltage of 4.5V.
  • a power management chip is integrated on the baseband chip, and the power management chip outputs a SIM card power signal.
  • the power management chip and the baseband chip are independently disposed, and the power management chip outputs the SIM card power signal to the baseband chip to enable the baseband chip to work normally, and the baseband chip can output the clock signal, the reset signal, and the data signal.
  • the method further includes: before the conversion chip transmits the high level signal, the SIM card identification circuit determines, by the comparator circuit, a level of the chip pin MOD_VCC corresponding to the SIM card power signal.
  • the comparator circuit determines the level of the chip pin MOD_VCC corresponding to the SIM card power signal, including: the IN- pin of the comparator circuit is connected to the reference signal, wherein the reference signal is the high The level signal is received by the preset voltage dividing circuit; the IN+ pin of the comparator circuit is connected to the SIM card power signal; the comparator circuit determines the SIM card according to the reference signal and the voltage value of the SIM card power signal The chip pin MOD_VCC corresponding to the power signal is high or low.
  • the voltage value of the reference signal is greater than 1.8V and less than 3V; the comparator circuit determines the level of the chip pin MOD_VCC corresponding to the SIM card power signal, including: the comparator circuit is at the SIM card power signal In the case of 1.8V, it is determined that the MOD_VCC is low; the comparator circuit determines that the MOD_VCC is high when the SIM card power signal is 3V.
  • the SIM card identification circuit identifies that the high level signal is the SIM card signal, and the SIM card identification circuit determines an output voltage of the output signal SIM-VCC according to the level of the MOD_VCC; the SIM card identification circuit is configured according to the The output voltage determines a SIM card signal that matches the SIM-VCC and transmits the SIM card signal that matches the SIM-VCC to the corresponding SIM card holder.
  • the scheme shown in the present disclosure consists of two parts of circuits, a signal level conversion circuit and a SIM card identification circuit.
  • the long-distance transmission of the signal will cause the power supply, clock, reset and data signals of the SIM card to be unclean, drown the real signal, and the anti-interference ability is weakened.
  • the main function of the signal level conversion circuit is to improve the anti-interference ability of the signal through a multi-channel voltage.
  • the conversion chip converts the SIM card power, clock, reset and data signals into a signal matching the high level VCC.
  • the reference voltage is increased and the signal anti-interference ability is enhanced. This part of the circuit is laid out on the TBOX body.
  • the converted signal is connected to the connector and transmitted to the SIM card identification circuit board through a long wire.
  • This part of the circuit is mainly used for SIM card specification identification, because the signal converted by the level conversion chip is not a standard SIM card signal, SIM
  • the card identification circuit board mainly includes a power supply circuit, a comparator circuit, a special circuit for a 1.8V/3V SIM card power supply, and a SIM card holder.
  • the principle is to use the 1.8V/3V SIM card power supply chip to adjust the output level of the SIM card power chip through the output level of the comparator, thus completing the identification process.
  • FIG. 2 is a block diagram of a signal level conversion circuit according to an embodiment.
  • the embodiment provides a level conversion circuit, a SIM card power signal and a clock signal output by a base processor chip of a main processor.
  • the reset signal and the data signal are converted into a power signal, a clock signal, a reset signal, and a data signal matched with an output voltage of 4.5 V by a four-way level conversion chip.
  • the principle is that the reference voltage is increased, and the anti-interference ability is enhanced.
  • FIG. 3 is a schematic diagram of a comparator circuit according to an embodiment.
  • the 4.5V power signal obtained by the level conversion chip of the previous step is used to obtain a reference voltage through a voltage dividing circuit, and is connected to the IN- of the comparator.
  • the reference voltage (the voltage value of the reference signal) is 2.65V
  • the reference voltage is between 1.8V and 3.0V
  • the SIM card power signal is the VREG_L6_UIM1 output on the chip side of the base processor, which is 1.8V/ 3.0V, connected to the IN+ pin of the comparator.
  • the reference voltage can be obtained by a voltage divider circuit through a 4.5V power supply signal output by other chips.
  • FIG. 4 is a schematic diagram of a dedicated circuit of a SIM card power supply according to an embodiment.
  • a power supply, a clock, a reset, and a data signal of a SIM card transmitted through a long wire are directly connected to a connector of a SIM card circuit board.
  • the level of the pin MOD_VCC of the chip determines the output voltage of the output signal SIM_VCC. This feature can be used to complete the identification of the SIM card.
  • MOD_VCC is low
  • SIM_VCC is 1.8V
  • MOD_VCC is high
  • SIM_VCC is 3.0V.
  • the reset signal, data signal and clock signal are also output as a voltage level matching SIM_VCC, which is a standard SIM card signal, which is transmitted to the SIM card holder.
  • the identification of the SIM card is completed.
  • FIG. 5 is a flowchart of transmitting a SIM card signal according to an embodiment.
  • the baseband chip transmits a standard SIM card signal, and a signal level conversion portion (corresponding to the multi-level level conversion chip of the above embodiment)
  • the signal is boosted, and the boosted signal is transmitted over a long distance over a long wire and transmitted to the SIM card identification portion to identify the boosted signal as a SIM card signal.
  • FIG. 6 is a flowchart of identifying a SIM card signal according to an embodiment.
  • the comparator converts the current SIM card power signal to MOD_VCC, and the subsequent SIM card identification circuit determines that the current MOD_VCC is a high level, then determining Currently 3V SIM signal. If it is low, it determines that it is currently a 1.8V SIM card signal.
  • the abnormal situation such as the arrears and damage of the eSIM chip on the Tbox is solved, and the SIM card is placed at a position convenient for the user to bring convenience to the user; on the other hand, the level conversion chip is adopted.
  • Improve the SIM card power, clock, reset and data signal levels to improve the signal's anti-interference ability, and control the output level of the SIM card power supply chip through the comparator output signal level, thus completing the SIM card specification identification.
  • the long-distance transmission of the reliability of the SIM card signal is completed.
  • the method according to the foregoing embodiment can be implemented by means of software plus a general hardware platform, or by hardware.
  • the technical solution of the present disclosure can be embodied in the form of a software product stored in a storage medium (such as Read-Only Memory (ROM)/Random Access Memory (Random).
  • the Access Memory (RAM), the magnetic disk, and the optical disk include a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method described in any of the embodiments of the present disclosure.
  • the embodiment provides a circuit, comprising: a baseband chip (corresponding to the main processing baseband chip of the above embodiment), configured to output a SIM card signal to the conversion chip; and the conversion chip (corresponding to the multi-path of the above embodiment) a flat conversion chip) connected to the baseband chip, configured to convert the SIM card signal to a high level signal, and to transmit the high level signal to the SIM card identification circuit; the SIM card identification circuit (corresponding to the above embodiment)
  • the SIM card identification circuit board is connected to the conversion chip and configured to recognize the high level signal as the SIM card signal.
  • the SIM card signal includes: a SIM card power signal; the circuit further includes: a comparator circuit, the comparator circuit and the baseband chip, the conversion chip, and the SIM card identification circuit
  • the connection is configured to determine, by the comparator circuit, a level of the chip pin MOD_VCC corresponding to the SIM card power signal before the conversion chip transmits the high level signal.
  • the comparator circuit is configured to determine a level of a chip pin MOD_VCC corresponding to the SIM card power signal by: the IN- pin of the comparator circuit is connected to a reference signal, Wherein the reference signal is a signal obtained by the high level signal through a preset voltage dividing circuit; an IN+ pin of the comparator circuit is connected to the SIM card power signal; and the comparator circuit is based on the reference The signal and the voltage value of the SIM card power signal determine that the chip pin MOD_VCC is high or low.
  • the SIM card identification circuit is configured to identify the high level signal as the SIM card signal by: the SIM card identification circuit determining the output signal SIM according to the level of the MOD_VCC - an output voltage of the VCC; the SIM card identification circuit determines a SIM card signal that matches the SIM-VCC according to the output voltage, and transmits the SIM card signal that matches the SIM-VCC to the corresponding SIM card holder.
  • the SIM card signal includes at least one of the following: a SIM card power signal, a SIM card clock signal, a SIM card reset signal, and a SIM card data signal;
  • the high level signal includes at least one of: a power supply signal matching the output voltage of 4.5V, a clock signal matched with an output voltage of 4.5V, a reset signal matched with an output voltage of 4.5V, and data matching the output voltage of 4.5V. signal.
  • At least one module or at least one step of the above-described disclosure may be implemented by a general-purpose computing device, and the at least one module or at least one step may be concentrated on a single computing device or distributed. On a network of multiple computing devices.
  • at least one module or at least one step may be implemented by program code executable by a computing device, such that at least one module or at least one step may be stored in the storage device by the computing device, or at least A module or at least one step is separately fabricated into at least one integrated circuit module, or at least one module or a plurality of modules or steps in at least one step are fabricated as a single integrated circuit module.
  • the disclosure is not limited to any specific combination of hardware and software.

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Abstract

本公开提供了一种信号的传输方法和电路，其中，该方法包括：转换芯片接收基带芯片输出的SIM卡信号；转换芯片转换SIM卡信号为高电平信号，并传输高电平信号至SIM卡识别电路；SIM卡识别电路识别高电平信号为所述SIM卡信号。

Description

信号的传输方法和电路
本公开要求在2018年03月29日提交中国专利局、申请号为201810271331.7的中国专利申请的优先权，该申请的全部内容通过引用结合在本公开中。
技术领域
本公开涉及通信技术领域，例如涉及一种信号的传输方法和电路。
背景技术
在相关技术中，传统远程信息处理器(TelematicsBOX，TBOX)车载产品都会内置嵌入式用户身份识别卡(Embedded-Subscriber Identification Module，eSIM)芯片进行语音通话、上网等业务。所谓eSIM卡的概念就是将传统用户身份识别卡(Subscriber Identification Module，SIM)卡直接嵌入到设备芯片上，而不是作为独立的可移除零部件加入设备中。使用eSIM芯片为用户带来更多的便利和安全性，但是一旦eSIM发生欠费或芯片损坏等异常情况，此时如果TBOX上冗余了SIM卡座，就可以作为应急方案来解决突发情况。
一般TBOX都具有完整的结构件，同时都会安置在密封的汽车发动机舱内，如果将冗余的SIM卡座放置到TBOX本体上，不方便用户进行SIM卡插拔等操作，紧急时刻用户无法快速打开发动机舱，因此需要将SIM卡放置到用户易接触、方便插拔的位置，这样会出现SIM卡与TBOX主体之间存在一定距离，SIM卡信号从TBOX主体主处理器基带芯片出来后经过远距离传输必然会造成信号失真，抗干扰能力减弱。
相关技术中主体设备中SIM卡信号由于传输距离远导致信号差的问题，还没有有效的解决方案。
发明内容
本公开提供了一种信号的传输方法和电路，以至少解决相关技术中主体设备中SIM卡信号由于传输距离远导致信号差的问题。
本公开提供了一种信号的传输方法，包括：转换芯片接收基带芯片输出的SIM卡信号；转换芯片转换所述SIM卡信号为高电平信号，并传输所述高电平信号至SIM卡识别电路；SIM卡识别电路识别所述高电平信号为所述SIM卡信号。
本公开还提供了一种电路，包括：基带芯片、转换芯片以及SIM卡识别电 路，所述基带芯片设置为输出SIM卡信号至转换芯片；所述转换芯片与所述基带芯片连接，所述转换芯片设置为转换所述SIM卡信号为高电平信号，并传输所述高电平信号至所述SIM卡识别电路；所述SIM卡识别电路与所述转换芯片连接，所述SIM卡识别电路设置为识别所述高电平信号为所述SIM卡信号。
附图说明
图1是一实施例提供的一种信号的传输方法流程图；
图2是一实施例提供的一种信号电平转换电路框图；
图3是一实施例提供的一种比较器电路示意图；
图4是一实施例提供的一种SIM卡电源专用电路示意图；
图5是一实施例提供的一种传输SIM卡信号的流程图；
图6是一实施例提供的一种识别SIM卡信号的流程图。
具体实施方式
下文中将参考附图并结合实施例来说明本公开。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例一
图1是一实施例提供的一种信号的传输方法流程图，如图1所示，该流程包括如下步骤。
步骤S102，转换芯片接收基带芯片输出的SIM卡信号。
步骤S104，转换芯片转换该SIM卡信号为高电平信号，并传输该高电平信号至SIM卡识别电路。
步骤S106，SIM卡识别电路识别该高电平信号为该SIM卡信号。
通过上述步骤，在传输SIM卡信号之前，通过转换芯片将SIM卡信号转换为高电平信号，传输高电平信号，后续SIM卡识别电路识别该高电平信号为SIM卡信号，采用上述技术方案，传输高电平信号，提高了基准电压，信号抗干扰能力增强，解决了相关技术中主体设备中SIM卡信号由于传输距离远导致信号差的问题，保证了远距离传输的SIM卡的信号质量。
在一实施例中，该SIM卡信号包括以下至少之一：SIM卡电源信号、SIM 卡时钟信号、SIM卡复位信号以及SIM卡数据信号；该高电平信号包括以下至少之一：与输出电压4.5伏特(V)匹配的电源信号、与输出电压4.5V匹配的时钟信号，与输出电压4.5V匹配的复位信号、与输出电压4.5V匹配的数据信号。
本实施例中，基带芯片上集成有电源管理芯片，电源管理芯片输出SIM卡电源信号。
在一实施例中，电源管理芯片与基带芯片独立设置，电源管理芯片输出SIM卡电源信号给基带芯片以使基带芯片正常工作，基带芯片可输出时钟信号、复位信号和数据信号。
在一实施例中，上述方法还包括：在转化芯片传输该高电平信号之前，SIM卡识别电路经过比较器电路确定该SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低。
在一实施例中，比较器电路确定该SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低，包括：该比较器电路的IN-引脚连接至参考信号，其中，该参考信号为该高电平信号经过预设分压电路获取的信号；该比较器电路的IN+引脚连接至该SIM卡电源信号；该比较器电路依据该参考信号和该SIM卡电源信号的电压值确定该SIM卡电源信号对应的芯片引脚MOD_VCC为高电平或低电平。
在一实施例中，参考信号的电压值大于1.8V且小于3V；比较器电路确定该SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低，包括：该比较器电路在该SIM卡电源信号为1.8V的情况下，确定该MOD_VCC为低电平；该比较器电路在该SIM卡电源信号为3V的情况下，确定该MOD_VCC为高电平。
在一实施例中，SIM卡识别电路识别该高电平信号为该SIM卡信号包括：SIM卡识别电路依据该MOD_VCC的电平高低确定输出信号SIM-VCC的输出电压；SIM卡识别电路依据该输出电压确定与SIM-VCC匹配的SIM卡信号，并传输该与SIM-VCC匹配的SIM卡信号至对应的SIM卡座。
下面结合示例性实施例对本公开进行说明。
本公开所示的方案由两部分电路组成，分别为信号电平转换电路和SIM卡识别电路。
信号远距离传输会造成SIM卡的电源、时钟、复位和数据信号不干净，将真实信号淹没，抗干扰能力减弱，信号电平转换电路主要作用是提高信号的抗干扰能力，通过一个多路电压转换芯片将SIM卡电源、时钟、复位和数据信号转换成与高电平VCC匹配的信号，基准电压提高了，信号抗干扰能力就会增强， 将此部分电路布局在TBOX主体上。
转换后的信号连到连接器并通过长导线传输到SIM卡识别电路板上，此部分电路主要用于SIM卡规格识别，因为通过电平转换芯片转换的信号并不是标准的SIM卡信号，SIM卡识别电路板主要包括电源电路、比较器电路、1.8V/3V SIM卡电源专用电路和SIM卡座。原理是借用1.8V/3V SIM卡电源专用芯片，通过比较器的输出高低来调节SIM卡电源芯片的输出电平，从而完成识别过程。
图2是一实施例提供的一种信号电平转换电路框图，如图2所示，本实施例提供了一种电平转换电路，主处理器基带芯片输出的SIM卡电源信号、时钟信号、复位信号和数据信号通过四路电平转换芯片转换成与输出电压4.5V匹配的电源信号、时钟信号、复位信号和数据信号，原理是基准电压提高了，抗干扰能力随之增强。
在SIM卡识别电路中，包含两部分电路，比较器电路和SIM卡电源专用电路。图3是一实施例提供的一种比较器电路示意图，如图3所示，经过上一步的电平转换芯片得到的4.5V电源信号，通过分压电路得到参考电压，连接比较器的IN-引脚，这里参考电压(参考信号的电压值)为2.65V，参考电压介于1.8V～3.0V之间，SIM卡电源信号为主处理器基带芯片侧输出的VREG_L6_UIM1，取值为1.8V/3.0V，连接比较器的IN+引脚。当VREG_L6_UIM1＝1.8V时，此时比较器输出MOD_VCC的值为低；当VREG_L6_UIM1＝3.0V时，此时MOD_VCC输出为高。
在一实施例中，参考电压可通过其他芯片输出的4.5V电源信号通过分压电路得到。
图4是一实施例提供的一种SIM卡电源专用电路示意图，如图4所示，通过长导线传输过来的SIM卡的电源、时钟、复位和数据信号直接连接SIM卡电路板的连接器，然后连接1.8V/3V SIM卡电源调节芯片，芯片的引脚MOD_VCC的电平高低决定了输出信号SIM_VCC的输出电压，即可利用这个特点完成SIM卡的识别。MOD_VCC为低时，则SIM_VCC为1.8V；MOD_VCC为高时，则SIM_VCC为3.0V。同时，复位信号、数据信号和时钟信号也会输出为与SIM_VCC相匹配的电压水平，即为标准的SIM卡信号，将信号传输到SIM卡座。至此，完成了SIM卡的识别。
图5是一实施例提供的一种传输SIM卡信号的流程图，如图5所示，基带芯片传输标准SIM卡信号，信号电平转换部分(相当于上述实施例的多路电平转换芯片)进行信号升压，升压后的信号经过长导线远距离传输，传输至SIM卡识别部分，识别所述升压后的信号为SIM卡信号。
图6是一实施例提供的一种识别SIM卡信号的流程图，如图6所示，比较器转换当前SIM卡电源信号至MOD_VCC，后续SIM卡识别电路确定当前MOD_VCC是高电平，则确定当前为3V SIM信号。如果是低电平，则确定当前为1.8V SIM卡信号。
采用上述技术方案，一方面解决了Tbox上eSIM芯片突发的欠费、损坏等异常情况，同时将SIM卡放置到用户便于操作的位置给用户带来便利；另一方面，通过电平转换芯片提高SIM卡电源、时钟、复位和数据信号的电平来提高信号的抗干扰能力，并通过比较器输出信号高低来控制SIM卡电源专用芯片的输出高低，从而完成SIM卡的规格识别。综上，完成了SIM卡信号可靠性的远距离传输。
通过以上的实施方式的描述，本领域的技术人员可以了解到根据上述实施例的方法可借助软件加通用硬件平台的方式来实现，也可以通过硬件。基于这样的理解，本公开的技术方案本质上可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如只读存储器(Read-Only Memory，ROM)/随机存取存储器(Random Access Memory，RAM)、磁碟、光盘)中，包括多个指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开任意实施例所述的方法。
实施例二
本实施例提供了一种电路，包括：基带芯片(相当于上述实施例的主处理基带芯片)，设置为输出SIM卡信号至转换芯片；所述转换芯片(相当于上述实施例的多路电平转换芯片)，与基带芯片连接，设置为转换所述SIM卡信号为高电平信号，并传输所述高电平信号至SIM卡识别电路；所述SIM卡识别电路(相当于上述实施例中的SIM卡识别电路板)，与转换芯片连接，设置为识别所述高电平信号为所述SIM卡信号。
在一实施例中，所述SIM卡信号包括：SIM卡电源信号；所述电路还包括：比较器电路，所述比较器电路与所述基带芯片、所述转换芯片以及所述SIM卡识别电路连接，设置为在所述转换芯片传输所述高电平信号之前，经过比较器电路确定所述SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低。
在一实施例中，所述比较器电路是设置为通过如下方式确定所述SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低：所述比较器电路的IN-引脚连接至参考信号，其中，所述参考信号为所述高电平信号经过预设分压电路获取 的信号；所述比较器电路的IN+引脚连接至所述SIM卡电源信号；所述比较器电路依据所述参考信号和所述SIM卡电源信号的电压值确定所述芯片引脚MOD_VCC为高电平或低电平。
在一实施例中，所述SIM卡识别电路是设置为通过如下方式识别所述高电平信号为所述SIM卡信号：所述SIM卡识别电路依据所述MOD_VCC的电平高低确定输出信号SIM-VCC的输出电压；所述SIM卡识别电路依据所述输出电压确定与SIM-VCC匹配的SIM卡信号，并传输所述与SIM-VCC匹配的SIM卡信号至对应的SIM卡座。
在一实施例中，所述SIM卡信号包括以下至少之一：SIM卡电源信号、SIM卡时钟信号、SIM卡复位信号以及SIM卡数据信号；
所述高电平信号包括以下至少之一：与输出电压4.5V匹配的电源信号、与输出电压4.5V匹配的时钟信号，与输出电压4.5V匹配的复位信号以及与输出电压4.5V匹配的数据信号。
显然，本领域的技术人员应该明白，上述的本公开的至少一个模块或至少一个步骤可以用通用的计算装置来实现，上述至少一个模块或至少一个步骤可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上。在一实施例中，至少一个模块或至少一个步骤可以用计算装置可执行的程序代码来实现，从而，可以将至少一个模块或至少一个步骤存储在存储装置中由计算装置来执行，或者将至少一个模块或至少一个步骤分别制作成至少一个集成电路模块，或者将至少一个模块或至少一个步骤中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。

Claims (10)

  1. 一种信号的传输方法，包括：
    转换芯片接收基带芯片输出的用户身份识别卡SIM卡信号；
    所述转换芯片转换所述SIM卡信号为高电平信号，并传输所述高电平信号至SIM卡识别电路；
    所述SIM卡识别电路识别所述高电平信号为所述SIM卡信号。
  2. 根据权利要求1所述的方法，其中，
    所述SIM卡信号包括以下至少之一：SIM卡电源信号、SIM卡时钟信号、SIM卡复位信号以及SIM卡数据信号；
    所述高电平信号包括以下至少之一：与输出电压4.5V匹配的电源信号、与输出电压4.5V匹配的时钟信号，与输出电压4.5V匹配的复位信号以及与输出电压4.5V匹配的数据信号。
  3. 根据权利要求2所述的方法，在所述转换芯片传输所述高电平信号之前，还包括：
    所述SIM卡识别电路经过比较器电路确定所述SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低。
  4. 根据权利要求3所述的方法，其中，所述比较器电路确定所述SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低，包括：
    所述比较器电路的IN-引脚连接至参考信号，其中，所述参考信号为所述高电平信号经过预设分压电路获取的信号；
    所述比较器电路的IN+引脚连接至所述SIM卡电源信号；
    所述比较器电路依据所述参考信号和所述SIM卡电源信号的电压值确定所述SIM卡电源信号对应的芯片引脚MOD_VCC为高电平或低电平。
  5. 根据权利要求4所述的方法，其中，所述参考信号的电压值大于1.8V且小于3.0V；
    所述比较器电路依据所述参考信号和所述SIM卡电源信号的电压值确定所述芯片引脚MOD_VCC为高电平或低电平，包括：
    所述比较器电路在所述SIM卡电源信号为1.8V的情况下，确定所述MOD_VCC为低电平；
    所述比较器电路在所述SIM卡电源信号为3V的情况下，确定所述MOD_VCC为高电平。
  6. 根据权利要求3所述的方法，其中，所述SIM卡识别电路识别所述高电平信号为所述SIM卡信号包括：
    所述SIM卡识别电路依据所述MOD_VCC的电平高低确定输出信号SIM-VCC的输出电压；
    所述SIM卡识别电路依据所述输出电压确定与所述SIM-VCC匹配的SIM卡信号，并传输所述与所述SIM-VCC匹配的SIM卡信号至对应的SIM卡座。
  7. 一种电路，包括：基带芯片、转换芯片以及SIM卡识别电路；
    所述基带芯片设置为输出用户身份识别卡SIM卡信号至转换芯片；
    所述转换芯片与所述基带芯片连接，所述转换芯片设置为转换所述SIM卡信号为高电平信号，并传输所述高电平信号至SIM卡识别电路；
    所述SIM卡识别电路与所述转换芯片连接，所述SIM卡识别电路设置为识别所述高电平信号为所述SIM卡信号。
  8. 根据权利要求7所述的电路，其中，所述SIM卡信号包括：SIM卡电源信号；
    所述电路还包括：比较器电路，所述比较器电路与所述基带芯片、所述转换芯片以及所述SIM卡识别电路连接，设置为在所述转换芯片传输所述高电平信号之前，确定所述SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低。
  9. 根据权利要求8所述的电路，其中，所述比较器电路是设置为通过如下方式确定所述SIM卡电源信号对应的芯片引脚MOD_VCC的电平高低：
    所述比较器电路的IN-引脚连接至参考信号，其中，所述参考信号为所述高电平信号经过预设分压电路获取的信号；所述比较器电路的IN+引脚连接至所述SIM卡电源信号；
    所述比较器电路依据所述参考信号和所述SIM卡电源信号的电压值确定所述SIM卡电源信号对应的芯片引脚MOD_VCC为高电平或低电平。
  10. 根据权利要求8所述的电路，其中，所述SIM卡识别电路是设置为通过如下方式识别所述高电平信号为所述SIM卡信号：
    所述SIM卡识别电路依据所述MOD_VCC的电平高低确定输出信号SIM-VCC的输出电压；
    所述SIM卡识别电路依据所述输出电压确定与所述SIM-VCC匹配的SIM卡信号，并传输所述与所述SIM-VCC匹配的SIM卡信号至对应的SIM卡座。
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