WO2017201945A1 - 一种fm信号与usb传输的切换装置 - Google Patents

一种fm信号与usb传输的切换装置 Download PDF

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Publication number
WO2017201945A1
WO2017201945A1 PCT/CN2016/101645 CN2016101645W WO2017201945A1 WO 2017201945 A1 WO2017201945 A1 WO 2017201945A1 CN 2016101645 W CN2016101645 W CN 2016101645W WO 2017201945 A1 WO2017201945 A1 WO 2017201945A1
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pin
usb
switch
switching
signal
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PCT/CN2016/101645
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English (en)
French (fr)
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肖亮
刘畅
纪成举
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乐视控股（北京）有限公司
乐视移动智能信息技术（北京）有限公司
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Publication of WO2017201945A1 publication Critical patent/WO2017201945A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]

Definitions

  • the embodiments of the present invention relate to the field of USB interface technologies, and in particular, to a device for switching between FM signals and USB transmission.
  • the left and right channels of the headphones are usually used as the FM receiving antenna.
  • the audio path of the switch is required to meet the bandwidth of the FM (3db bandwidth is greater than 200MHz). Since the use of the USB port to support the headset function is a new trend in the market, the related chip development can not fully meet the needs, so the audio path of the switch chip that can be found in the chip market is designed according to the audio bandwidth (usually less than 20 kHz), so Suitable for FM.
  • the inventors have found that at least the following problems exist in the prior art: the current trend in the design of mobile terminal products (such as mobile phones) is to cancel the traditional 3.5mm earphones, and only use the USB port to connect the headphones, when When the FM signal is supported, the existing switching device is difficult to meet this requirement.
  • the switching device for the FM signal and the USB transmission according to the embodiment of the present application adopts the following technical solutions.
  • a switching device for FM signal and USB transmission including a switch, a USB external interface, and USB connector;
  • the switch is connected to the USB external interface and the USB connector through a circuit; the switch includes a level signal detecting module for detecting a level signal and a switch control module for switching the communication between the pins; The flat signal detecting module inputs the detected level signal to the switch control module, and the switch control module switches the communication relationship between the pins according to the received level signal.
  • the level signal detecting module is connected to the CPU, and the level signal detecting module inputs the detected level signal to the switch control module according to an instruction of the CPU.
  • the switch control module includes an S pin, a D1+ pin, a D2+ pin, an L pin, a GND pin, an R pin, a D2-pin, and a D1-pin. Pin and VCC pin; where the VCC pin is used to connect to the power supply and the GND pin is used to ground.
  • the D1+ pin is connected to the D2+ pin
  • the D1-pin is connected to the D2-pin
  • the switch is tangential to the L pin and When the R pin is used, the D1+ pin is connected to the L pin, and the D1-pin is connected to the R pin.
  • the D2+ pin and the D2-pin of the switch are connected to the USB external interface for data transmission; the L pin and the R pin of the switch are used to receive the FM signal.
  • the pins are not connected;
  • the pin is at a low level, the S pin is connected to a low level, the D1+ pin is connected to the D2+ pin, and the D1-pin is connected to the D2-pin;
  • the pin is at a low level, the S pin is connected to the high level, the D1+ pin is connected to the L pin, and the D1-pin is connected to the R pin.
  • USB data transmission and/or charging of the mobile phone are performed through the switch; when the D1+ pin is connected to the L pin, When the D1-pin is in communication with the R-pin, FM signal input and/or audio signal input and output are performed through the switch.
  • the switch comprises a switch circuit
  • the USB external interface comprises a USB external circuit
  • the USB connector comprises a USB connection circuit
  • USB output and/or audio signal flows from the USB connection circuit to the switch circuit and then through the USB external circuit; USB access and/or FM signal and/or power access and/or audio signal from The USB external circuit input flows to the switching circuit and is then input via the USB connection circuit.
  • the embodiment of the present application has the following advantages: the switching device detects a level signal through a level signal detecting module of the switch, and switches between the pins through a switch control module of the switch Connected, the level signal detecting module of the switching switch inputs a detected level signal to the switching switch control module, and the switching switch control module of the switching switch switches the connection between the pins according to the received level signal. relationship. Therefore, such a switching device can switch between FM signal and USB transmission.
  • FIG. 1 is a schematic diagram of application of a switching device according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of switching between FM signal and USB access of a switching device according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a switch of a switching device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of FM signal access, audio signal output, and USB access output of a switching device according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a switch control module of a switching device according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of control of a switch control module of a switching device according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of FM signal access, power access, audio signal input and output, and USB access output of the switching device according to the embodiment of the present application.
  • the switching device for FM signal and USB transmission described in the embodiment of the present application can be applied to a terminal device such as a mobile phone.
  • the FM signal refers to a signal used by a wireless broadcast
  • the USB transmission refers to a data and an audio signal transmitted through a USB interface.
  • the switching device includes a changeover switch 100, a USB external interface 200, and a USB connector 300.
  • the switch 100 is connected to the USB external interface 200 and the USB connector 300 through a circuit.
  • the CPU in Fig. 1 refers to the processor, and the CODEC refers to the codec.
  • the USB external interface 200 can be used to access an earphone.
  • the switching between the FM signal and the USB transmission can be realized by the switch 100, that is, when the mobile phone 1 is used to listen to the wireless broadcast, the switch 100 is switched to the FM signal reception, and when the mobile phone 1 is used for data transmission, the switch 100 is switched to the USB transmission.
  • the D1+ pin and the D1-pin of the changeover switch 100 are in communication with the USB connector 300, and the D1+ pin and the D1-pin are common pins of the changeover switch 100.
  • the D2+ pin and the D2-pin of the changeover switch 100 are in communication with the USB external interface 200 for data transmission.
  • the L and R pins of the diverter switch 100 are used to receive the FM signal and are also the output pins of the audio.
  • the D1+ pin When the switch is tangential to the L pin and the R pin, the D1+ pin is connected to the L pin, and the D1-pin is connected to the R pin.
  • the D1+ pin When the pin is connected to the D2+ pin and the D1-pin is connected to the D2-pin, data can be transferred via USB.
  • the D1+ pin is connected to the L pin and the D1-pin is connected to the R pin, FM signal transmission and audio transmission can be performed via the USB.
  • the changeover switch 100 includes a level signal detection module 102 for detecting a level signal and a switch control module 103 for switching a pin connection.
  • the level signal detecting module 102 is connected to the switching switch control module 103.
  • the level signal detecting module 102 communicates with the CPU, and inputs a level signal to the switching switch control module 103 according to an instruction of the CPU.
  • the changeover switch control module 103 switches the communication relationship between the pins based on the obtained level signal.
  • the internal circuit of the switch 100 is schematically illustrated by the switch circuit 101
  • the internal circuit of the USB external interface 200 is illustrated by the USB external circuit 201
  • the internal circuit of the USB connector 300 is illustrated by the USB connection circuit 301.
  • the USB output (data output) and/or audio signal flows from the USB connection circuit 301 to the switch circuit 101, and then is output via the USB external circuit 201.
  • the USB access and/or FM signal is input from the USB external circuit 201 to the switch circuit 101, and then input via the USB connection circuit 301.
  • the switch control module 103 is an integrated circuit including an S pin, a D1+ pin, a D2+ pin, an L pin, a GND pin, an R pin, a D2-pin, a D1-pin, and a tube. Foot and VCC pin. Among them, the VCC pin is connected to the power supply, and the pin and GND pin are grounded.
  • each pin is the output enable terminal
  • the S pin is the select input pin
  • the D1+ pin, the D2+ pin, the L pin, the R pin, the D2-pin and the D1-pin are the data pins
  • the VCC pin Used to connect to the power supply
  • the GND pin is used for grounding.
  • the pin and the S pin are used to input and determine the level signal.
  • the pin ground is at a low level, otherwise it is at a high level.
  • the level signal detecting module 102 detects The pin is at a low level, and the S pin receives a high level or a low level according to a command from the CPU.
  • Form 02 is The true value of the pin and S pin, H means high level, L means low level. when When the pin is at a high level, the pins do not communicate. when When the pin is at a low level, if the S pin is connected to a low level, the D1+ pin is connected to the D2+ pin, and the D1-pin is connected to the D2- pin. when When the pin is at a low level, if the S pin is connected to a high level, the D1+ pin is connected to the L pin, and the D1-pin is connected to the R pin.
  • the switch 100 of the present embodiment outputs a USB output (data output) and/or an audio signal from the USB connection circuit 301 to the switch circuit 101 according to the CPU control signal, and then outputs it via the USB external circuit 201.
  • USB access and/or FM signals and/or power access and/or audio signals are input from the USB external circuit 201 to the switch circuit 101 and then input via the USB connection circuit 301.
  • the pin and the S pin are used to input and determine the level signal.
  • the pin ground is at a low level, otherwise it is at a high level.
  • the level signal detecting module 102 detects The pin is at a low level, and the S pin receives a high level or a low level according to a command from the CPU.
  • the pin is at a low level, if the S pin is connected to a low level, the D1+ pin is connected to the D2+ pin, and the D1-pin is connected to the D2-pin.
  • the USB data transmission can be performed by the switch 100. / or charge your phone.
  • the FM signal input can be performed through the switch 100. Or audio signal input and output.
  • the switching device outputs a USB output (data output) and/or an audio signal from the USB connection circuit 301 to the switch circuit 101 through the switch 100 according to the CPU control signal, and then outputs it via the USB external circuit 201.
  • USB access and/or FM signals and/or power access and/or audio signals are input from the USB external circuit 201 to the switch circuit 101 and then input via the USB connection circuit 301.
  • This switching device enables switching between FM signal USB transmissions.

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Abstract

本申请实施例公开了一种FM信号与USB传输的切换装置，涉及USB接口技术领域，用于切换FM信号与USB传输。一种FM信号与USB传输的切换装置，所述切换装置包括切换开关、USB外部接口和USB连接器；所述切换开关通过电路与USB外部接口和USB连接器相连；所述切换开关包括用于检测电平信号的电平信号检测模块和用于切换管脚连接的切换开关控制模块；所述电平信号检测模块向所述切换开关控制模块输入检测到的所述电平信号，所述切换开关控制模块根据接收到的所述电平信号来切换所述管脚间的连通关系。所述切换装置能够实现FM信号与USB传输间的切换。

Description

一种FM信号与USB传输的切换装置
交叉引用
本申请基于申请号为CN201610353957.3、申请日为2016年05月25日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请实施例涉及USB接口技术领域，尤其涉及一种FM信号与USB传输的切换装置。
背景技术
对于支持FM调频功能的设备(比如手机)，通常会使用耳机的左右声道作为FM接收天线。此时就要求开关的音频通路能满足FM的带宽(3db带宽大于200MHz)。由于用USB口支持耳机功能是市场的新趋势，相关芯片研发还不能完全满足需要，所以目前芯片市场上能找到的开关芯片的音频通路都是按照音频带宽设计的(通常小于20kHz)，所以不适用于FM。
通过对现有技术的研究，发明人发现现有技术中至少存在如下问题:目前移动终端产品(比如手机)设计的新趋势是取消传统的3.5mm耳机，仅使用USB口连接耳机，当需要同时支持FM信号时，现有的切换装置难以满足这一需求。
发明内容
为了解决现有技术中USB接口的切换装置不能满足FM信号切换的问题，本申请实施例所述的一种FM信号与USB传输的切换装置采用了以下的技术方案。
一种FM信号与USB传输的切换装置，包括切换开关、USB外部接口和 USB连接器；
所述切换开关通过电路与USB外部接口和USB连接器相连；所述切换开关包括用于检测电平信号的电平信号检测模块和用于切换管脚间连通的切换开关控制模块；所述电平信号检测模块向所述切换开关控制模块输入检测到的所述电平信号，所述切换开关控制模块根据接收到的所述电平信号来切换所述管脚间的连通关系。
进一步，所述电平信号检测模块与CPU连接，所述电平信号检测模块根据所述CPU的指令向所述切换开关控制模块输入检测到的所述电平信号。
进一步，所述切换开关控制模块包括S管脚、D1+管脚、D2+管脚、L管脚、GND管脚、R管脚、D2-管脚、D1-管脚、
Figure PCTCN2016101645-appb-000001
管脚和VCC管脚；其中，VCC管脚用于接入电源，GND管脚用于接地。
进一步，当所述切换开关切向D2+管脚和D2-管脚时，D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通；当所述切换开关切向L管脚和R管脚时，D1+管脚与L管脚连通，D1-管脚与R管脚连通。
进一步，所述切换开关的D2+管脚和D2-管脚与USB外部接口连通，用于进行数据传输；所述切换开关的L管脚和R管脚用于接收FM信号。
进一步，
Figure PCTCN2016101645-appb-000002
管脚处于高电平时，各个管脚之间不连通；
Figure PCTCN2016101645-appb-000003
管脚处于低电平时，S管脚接入低电平，D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通；
Figure PCTCN2016101645-appb-000004
管脚处于低电平时，S管脚接入高电平，D1+管脚与L管脚连通，D1-管脚与R管脚连通。
进一步，当D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通时，通过所述切换开关进行USB数据传输和/或给手机充电；当D1+管脚与L管脚连通，D1-管脚与R管脚连通时，通过所述切换开关进行FM信号输入和/或音频信号输入输出。
进一步，所述切换开关包含开关电路，所述USB外部接口包含USB外部电路，所述USB连接器包含USB连接电路。
进一步，USB输出和/或音频信号从所述USB连接电路流向所述开关电路，然后经所述USB外部电路输出；USB接入和/或FM信号和/或电源接入和/或音频信号从所述USB外部电路输入流向所述开关电路，然后经所述USB连接电路输入。
与现有技术相比，本申请实施例有以下优点：所述切换装置通过所述切换开关的电平信号检测模块检测电平信号，通过所述切换开关的切换开关控制模块切换管脚间的连通，通过切换开关的电平信号检测模块向所述切换开关控制模块输入检测到的电平信号，通过切换开关的切换开关控制模块根据接收到的所述电平信号来切换管脚间的连通关系。因此，这种切换装置能实现FM信号与USB传输之间的切换。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1为本申请实施例所述切换装置的应用示意图。
图2为本申请实施例所述切换装置FM信号与USB接入切换示意图。
图3为本申请实施例所述切换装置的切换开关结构示意图。
图4为本申请实施例所述切换装置FM信号接入、音频信号输出以及USB接入输出的示意图。
图5为本申请实施例所述切换装置的切换开关控制模块示意图。
图6为本申请实施例所述切换装置的切换开关控制模块控制示意图。
图7为本申请实施例所述切换装置FM信号接入、电源接入、音频信号输入输出以及USB接入输出的示意图。
附图标记说明：1—终端设备、100—切换开关、101—开关电路、102—电 平信号检测模块、103—切换开关控制模块、200—USB外部接口、201—USB外部电路、300—USB连接器、301—USB连接电路。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
本申请实施例所述的一种FM信号与USB传输的切换装置可应用于手机等终端设备中，FM信号指的是无线广播使用的信号，USB传输指的是通过USB接口传输数据和音频信号。参考图1，所述切换装置包括切换开关100、USB外部接口200和USB连接器300。所述切换开关100通过电路与USB外部接口200和USB连接器300相连。图1中的CPU指处理器，CODEC指编译码器。
参考图1，所述USB外部接口200可用于接入耳机。通过切换开关100可实现FM信号与USB传输的切换，即当使用手机1听取无线广播时，切换开关100切换到FM信号接收，当使用手机1进行数据传输时，切换开关100切换到USB传输。
参考图2，切换开关100的D1+管脚和D1-管脚与USB连接器300连通，D1+管脚和D1-管脚是切换开关100的通用管脚。切换开关100的D2+管脚和D2-管脚与USB外部接口200连通，用于进行数据传输。切换开关100的L管脚和R管脚用于接收FM信号，同时也是音频的输出管脚。当开关切向D2+管脚和D2-管脚，D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通。当开关切向L管脚和R管脚，D1+管脚与L管脚连通，D1-管脚与R管脚连通。在D1+ 管脚与D2+管脚连通以及D1-管脚与D2-管脚连通的情况下，通过USB可进行数据传输。D1+管脚与L管脚连通以及D1-管脚与R管脚连通的情况下，通过USB可进行FM信号传输和音频传输。
参考图3，切换开关100包括用于检测电平信号的电平信号检测模块102和用于切换管脚连接的切换开关控制模块103。所述电平信号检测模块102和切换开关控制模块103相连。所述电平信号检测模块102与CPU连通，根据CPU的指令，向切换开关控制模块103输入电平信号。切换开关控制模块103根据获得的电平信号切换管脚间的连通关系。
参考图4，用开关电路101示意切换开关100的内部电路，用USB外部电路201示意USB外部接口200的内部电路，用USB连接电路301示意USB连接器300的内部电路。则USB输出(数据输出)和/或音频信号从USB连接电路301流向开关电路101，然后经USB外部电路201输出。USB接入和/或FM信号从USB外部电路201输入流向开关电路101，然后经USB连接电路301输入。
参考图5，切换开关控制模块103为一块集成电路，包括S管脚、D1+管脚、D2+管脚、L管脚、GND管脚、R管脚、D2-管脚、D1-管脚、管脚和VCC管脚。其中，VCC管脚接通电源，管脚和GND管脚参考接地。
Figure PCTCN2016101645-appb-000005
表格01
参考表格01，各个管脚的功能为：
Figure PCTCN2016101645-appb-000006
管脚为输出使能端，S管脚为选择输入管脚，D1+管脚、D2+管脚、L管脚、R管脚、D2-管脚和D1-管脚为数据管脚， VCC管脚用于接入电源，GND管脚用于接地。
参考图6，通过
Figure PCTCN2016101645-appb-000007
管脚和S管脚来输入和确定电平信号。
Figure PCTCN2016101645-appb-000008
管脚接地处于低电平，否则处于高电平。当电平信号检测模块102检测到
Figure PCTCN2016101645-appb-000009
管脚处于低电平，根据CPU的指令，S管脚接收高电平或者低电平。
Figure PCTCN2016101645-appb-000010
表格02
表格02为管脚和S管脚的真值示意图，H表示高电平，L表示低电平。当
Figure PCTCN2016101645-appb-000012
管脚处于高电平时，各个管脚之间不连通。当
Figure PCTCN2016101645-appb-000013
管脚处于低电平时，如果S管脚接入低电平，则D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通。当
Figure PCTCN2016101645-appb-000014
管脚处于低电平时，如果S管脚接入高电平，则D1+管脚与L管脚连通，D1-管脚与R管脚连通。
参考图7，本实施例所述切换开关100根据CPU控制信号，USB输出(数据输出)和/或音频信号从USB连接电路301流向开关电路101，然后经USB外部电路201输出。USB接入和/或FM信号和/或电源接入和/或音频信号从USB外部电路201输入流向开关电路101，然后经USB连接电路301输入。
参考图6，通过
Figure PCTCN2016101645-appb-000015
管脚和S管脚来输入和确定电平信号。
Figure PCTCN2016101645-appb-000016
管脚接地处于低电平，否则处于高电平。当电平信号检测模块102检测到
Figure PCTCN2016101645-appb-000017
管脚处于低电平，根据CPU的指令，S管脚接收高电平或者低电平。当
Figure PCTCN2016101645-appb-000018
管脚处于低电平时，如果S管脚接入低电平，则D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通，此时通过切换开关100可以进行USB数据传输和/或给手机充电。当
Figure PCTCN2016101645-appb-000019
管脚处于低电平时，如果S管脚接入高电平，则D1+管脚与L管脚连通，D1-管脚与R管脚连通，此时通过切换开关100可以进行FM信号输入和/或音频信号输入输出。
本申请实施例主要有以下的有益效果：
本申请实施例所述切换装置通过切换开关100根据CPU控制信号，USB输出(数据输出)和/或音频信号从USB连接电路301流向开关电路101，然后经USB外部电路201输出。USB接入和/或FM信号和/或电源接入和/或音频信号从USB外部电路201输入流向开关电路101，然后经USB连接电路301输入。使得这种切换装置能够实现FM信号USB传输之间的切换。
上述实施例为本申请较佳的实施方式，但本申请的实施方式并不受上述实施例的限制，其他的任何未背离本申请的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本申请的保护范围之内。

Claims (9)

  1. 一种FM信号与USB传输的切换装置，其特征在于：所述切换装置包括切换开关(100)、USB外部接口(200)和USB连接器(300)；
    所述切换开关(100)通过电路与USB外部接口(200)和USB连接器(300)相连；所述切换开关(100)包括用于检测电平信号的电平信号检测模块(102)和用于切换管脚间连通的切换开关控制模块(103)；所述电平信号检测模块(102)向所述切换开关控制模块(103)输入检测到的所述电平信号，所述切换开关控制模块(103)根据接收到的所述电平信号来切换所述管脚间的连通关系。
  2. 根据权利要求1所述的切换装置，其特征在于：所述电平信号检测模块(102)与CPU连接，所述电平信号检测模块(102)根据所述CPU的指令向所述切换开关控制模块(103)输入检测到的所述电平信号。
  3. 根据权利要求1或2所述的切换装置，其特征在于：所述切换开关控制模块(103)包括S管脚、D1+管脚、D2+管脚、L管脚、GND管脚、R管脚、D2-管脚、D1-管脚、OE管脚和VCC管脚；
    其中，VCC管脚用于接入电源，GND管脚用于接地。
  4. 根据权利要求3所述的切换装置，其特征在于：当所述切换开关(100)切向D2+管脚和D2-管脚时，D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通；
    当所述切换开关(100)切向L管脚和R管脚时，D1+管脚与L管脚连通，D1-管脚与R管脚连通。
  5. 根据权利要求3所述的切换装置，其特征在于：所述切换开关(100)的D2+管脚和D2-管脚与USB外部接口(200)连通，用于进行数据传输；
    所述切换开关(100)的L管脚和R管脚用于接收FM信号。
  6. 根据权利要求3所述的切换装置，其特征在于：
    Figure PCTCN2016101645-appb-100001
    管脚处于高电平时， 各个管脚之间不连通；
    Figure PCTCN2016101645-appb-100002
    管脚处于低电平时，S管脚接入低电平，D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通；
    Figure PCTCN2016101645-appb-100003
    管脚处于低电平时，S管脚接入高电平，D1+管脚与L管脚连通，D1-管脚与R管脚连通。
  7. 根据权利要求6所述的切换装置，其特征在于：当D1+管脚与D2+管脚连通，D1-管脚与D2-管脚连通时，通过所述切换开关(100)进行USB数据传输和/或给手机充电；
    当D1+管脚与L管脚连通，D1-管脚与R管脚连通时，通过所述切换开关(100)进行FM信号输入和/或音频信号输入输出。
  8. 根据权利要求1所述的切换装置，其特征在于：所述切换开关(100)包含开关电路(101)，所述USB外部接口(200)包含USB外部电路(201)，所述USB连接器(300)包含USB连接电路(301)。
  9. 根据权利要求8所述的切换装置，其特征在于：USB输出和/或音频信号从所述USB连接电路(301)流向所述开关电路(101)，然后经所述USB外部电路(201)输出；
    USB接入和/或FM信号和/或电源接入和/或音频信号从所述USB外部电路(201)输入流向所述开关电路(101)，然后经所述USB连接电路(301)输入。
PCT/CN2016/101645 2016-05-25 2016-10-10 一种fm信号与usb传输的切换装置 WO2017201945A1 (zh)

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