WO2017161746A1 - 用户设备 - Google Patents

用户设备 Download PDF

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Publication number
WO2017161746A1
WO2017161746A1 PCT/CN2016/088660 CN2016088660W WO2017161746A1 WO 2017161746 A1 WO2017161746 A1 WO 2017161746A1 CN 2016088660 W CN2016088660 W CN 2016088660W WO 2017161746 A1 WO2017161746 A1 WO 2017161746A1
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WIPO (PCT)
Prior art keywords
interface
usb
usb type
pin
user equipment
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Ceased
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PCT/CN2016/088660
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English (en)
French (fr)
Inventor
赵庆
王伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Le Holdings Beijing Co Ltd
Lemobile Information Technology (Beijing) Co Ltd
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Le Holdings Beijing Co Ltd
Lemobile Information Technology (Beijing) Co Ltd
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Priority to US15/240,163 priority Critical patent/US20170277650A1/en
Publication of WO2017161746A1 publication Critical patent/WO2017161746A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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

Definitions

  • Embodiments of the present invention relate to user equipment, and more particularly to a user equipment having a USB TYPE-C interface that is compatible with audio transmission of analog headphones in addition to USB data transmission.
  • USB universal serial bus interface
  • USB interface can be connected not only to storage devices, but also as a universal expansion interface.
  • TYPE A to MINI
  • MICRO B the form of the USB interface
  • the most popular USB form today is TYPE-C. It is not only fast, but also has a large transmission current, and it also supports forward and reverse insertion. It is convenient and easy to use.
  • FIG. 1 is a schematic structural view of a headphone plug provided by the prior art.
  • FIG. 2 is a schematic structural view of a headphone jack provided by the prior art.
  • the diameter of the earphone plug is generally 3.5mm. Since the earphone socket needs to completely cover the earphone plug, the thickness of the earphone socket cannot be less than 3.5mm, that is, the existing earphone socket must occupy The mobile phone has a certain printed circuit board (PCB) space, which is one of the reasons why the phone can not be thinned.
  • PCB printed circuit board
  • the purpose of the embodiments of the present invention is to provide a new analog audio transmission scheme for the foregoing deficiencies of the prior art, so that the user equipment can be designed to be lighter.
  • a user equipment including: a USB Type-C interface, compatible with USB signal transmission and analog audio peripherals; and a USB physical layer for connecting to the USB Type-C interface, thereby implementing USB signal transmission; an audio codec for connecting to the USB Type-C interface to implement analog audio transmission, wherein the left and right channel terminals of the audio codec and the USB physics a data transmission terminal of the layer, multiplexing the D+ and D- pins of the USB Type-C interface; and a first analog switching device for implementing the multiplexing.
  • the first analog switch device is configured to switch the D+ and D- pins of the USB Type-C interface to separate connections when detecting that an analog audio cable is inserted in the USB Type-C interface.
  • the pin switches to a data transmission terminal that is respectively connected to the USB physical layer.
  • the first analog switching device or the second analog switching device is configured to determine the USB Type-C interface by detecting a resistance value of a CC1 and/or CC2 pin of the USB Type-C interface. The type of cable inserted.
  • the first analog switching device or the second analog switching device is configured to detect a resistance value between the CC1 pin and the VBUS pin of the USB Type-C interface, and between the CC2 pin and the VBUS pin. When less than 1 k ⁇ , it is determined that an analog audio cable is inserted in the USB Type-C interface.
  • the user equipment further includes second analog switching means for implementing microphone data transmission of the audio codec with an SBU1 pin or an SBU2 pin of the USB Type-C interface.
  • the second analog switch device is configured to determine whether the analog audio cable inserted in the USB Type-C interface supports the microphone by detecting a resistance value of the SBU1 pin or the SBU2 pin of the USB Type-C interface. .
  • the user device can be a smart phone, a portable computer, a tablet, a desktop computer, or other suitable user device having a USB Type-C interface that supports analog audio output.
  • the analog audio transmission function can be implemented directly using the USB Type-C interface, so that a conventional analog audio jack, such as a 3.5 mm audio jack, can be omitted. Further, the brush board space of the user equipment can be further saved, so that the user equipment can be made lighter.
  • FIG. 1 is a schematic structural view of a headphone plug provided by the prior art
  • FIG. 2 is a schematic structural view of a headphone jack provided by the prior art
  • FIG. 3 shows a schematic diagram of socket pin assignment according to the USB Type-C specification
  • FIG. 4 shows a schematic diagram of a user equipment according to an embodiment of the present invention.
  • USB PHY USB physical layer
  • USB-IF USB Developer Forum
  • Version 1.0 Universal Serial Bus Type-C Cable and Connector Specification
  • CC1 and CC2 are two key pins that have many functions, such as detecting connections, distinguishing between front and back, configuring VBUS pins, and configuring other modes (such as connecting audio accessories, PCIE).
  • Two sets of TX/RX differential signal pairs are used for data transmission of the USB 3.1 standard, and D+/D-differential signal pairs are used for data transmission compatible with the USB 2.0 standard.
  • the SBU1 and SBU2 pins are reserved pins of the Type-C specification for extended function use.
  • the USB Type-C interface also includes four ground pins and four power pins.
  • FIG. 4 shows a schematic diagram of a user equipment (such as a smart phone) according to an embodiment of the present invention.
  • the user equipment includes: a USB Type-C interface 41, a USB physical layer (USB PHY) 42, an audio codec (CODEC) 43, a first analog switching device SW1, and a second analog switch. Device SW2.
  • USB Type-C interface 41 a USB Type-C interface 41
  • USB physical layer 42 USB physical layer
  • CDODEC audio codec
  • SW1 first analog switching device
  • USB PHY USB physical layer
  • USB PHY USB physical layer
  • the reserved pins SBU1 and SBU2 of the USB Type-C specification are used for the transmission of the MIC signal of the audio codec.
  • the first analog switch device SW1 is configured to switch the D+ and D- pins of the USB Type-C interface to the respectively connected audio codec 43 when it is detected that the analog audio cable is inserted in the USB Type-C interface 41. Left channel terminal L and right channel terminal R.
  • the first analog switch device SW1 is further configured to switch the D+ and D- pins of the USB Type-C interface to respectively connect to the USB physics when detecting that the USB cable is inserted in the USB Type-C interface
  • the data transmission terminal of layer 42 is configured to switch the D+ and D- pins of the USB Type-C interface to the respectively connected audio codec 43 when it is detected that the analog audio cable is inserted in the USB Type-C interface 41.
  • Left channel terminal L and right channel terminal R The first analog switch device SW1 is further configured to switch the D+ and D- pins of the USB Type-C interface to respectively connect to the USB physics when detecting that the USB cable is inserted in the USB Type-C interface
  • the data transmission terminal of layer 42 is configured to switch the D
  • the second analog switch device SW2 is configured to implement microphone data transfer of the audio codec 43 using the SBU1 pin or the SBU2 pin of the USB Type-C interface 41. As shown in FIG. 4, when SBU1 is used to connect an analog audio peripheral such as a MIC cable of a headphone, SW2 is configured to switch SUB1 to the MIC terminal of the CODEC 43 while making SBU2 as the analog audio peripheral. Audio device ground; vice versa.
  • the D+ pin is used to connect the left channel terminal L of the CODEC 43 and the D- pin is used to connect the right channel terminal L of the CODEC.
  • the terms "left” and "right” are relative concepts.
  • the D-pin can also be used to connect the left channel terminal L of the CODEC, and the D+ pin is used to connect the CODEC.
  • Right channel terminal L is used to connect the left channel terminal L of the CODEC.
  • the USB Type-C interface can be judged by judging the use state of the pins other than the aforementioned pins (D+, D-, SBU1, and SBU2) in the USB Type-C interface 41.
  • the type of cable inserted can be judged by judging the use state of the pins other than the aforementioned pins (D+, D-, SBU1, and SBU2) in the USB Type-C interface 41. The type of cable inserted.
  • the type of cable inserted in the USB Type-C interface 41 when the type of cable inserted is an analog audio cable, many of the pins other than the aforementioned mentioned pins in the USB Type-C interface 41 are in a "floating" high resistance state.
  • the type of cable inserted in the USB Type-C interface can be determined by detecting the resistance value of the CC1 and/or CC2 pins of the USB Type-C interface, that is, whether it is a USB Type-C cable or an analog audio cable. .
  • an analog audio cable interface for adapting to the USB Type-C interface 41 of the user equipment can be configured for the first analog switching device SW1 and/or the second analog to open
  • the closing device SW2 is capable of detecting the type of cable inserted.
  • the GND pin is used to connect to the GND of the analog audio cable interface
  • the analog audio cable interface is configured to be in the user device
  • a resistor is placed between the USB Type-C interface CC1 and CC2 and its internal GND.
  • the resistance of the resistor is the resistance of the CC1 and CC2 pins of the standard USB Type-C interface (such as a USB plug) (usually 5.1k ⁇ ). ).
  • SW1 can determine the type of cable inserted in the USB Type-C interface (such as a USB socket) by detecting the resistance between the CC1 and CC2 pins and GND.
  • the SW may be configured to determine the USB Type- when detecting that the resistance values between the CC1 pin and the GND pin of the USB Type-C interface and the CC2 pin and the GND pin are both less than 1 k ⁇ .
  • An analog audio cable is inserted in the C interface.
  • the reserved pins SBU1 and SBU2 of the USB Type-C specification are used for the transmission of the MIC signal of the audio codec.
  • the second analog switching device SW2 shown in FIG. 4 is an optional component.
  • the analog audio cable inserted into the USB Type-C interface 41 does not support the microphone (MIC) or the CODEC inside the user equipment does not. In the case of MIC support, it is not necessary to set SW2.
  • an MIC connection line for an analog audio cable interface adapted to SBU1 or SBU2 of the USB Type-C interface 41 of the user equipment can be configured so that the second analog switching device SW2 can detect the inserted Whether the analog audio cable supports the MIC. For example, by detecting whether the SBU1 or SBU2 pin is in an unconnected "floating" state, it can be determined whether the MIC cable of the analog audio cable interface is connected. As an example, if the SBU1 pin is detected to be in use and the SBU2 pin is still in an unused "floating" state, SW2 can switch the SBU1 pin to the MIC terminal of the CODEC and the SBU1 The foot switches to connect to the ground point. The "floating" state of the SBU1 or SBU2 pin can be obtained, for example, by detecting the resistance value between the pin and the ground.
  • the resistance value between the MIC connection line and the ground point of the analog audio cable interface adapted for SBU1 or SBU2 of the USB Type-C interface 41 of the user equipment may also be configured such that it is at a specific The range, and thus, by detecting whether the resistance value between the SBU1 or SBU2 of the USB Type-C interface of the user equipment and the ground point is within the specific range, it can be detected that the pin supports the MIC signal transmission.
  • the analog audio transmission function can be implemented directly by using the USB Type-C interface of the user equipment, so that a conventional analog audio jack, such as a 3.5 mm audio jack, can be omitted.
  • the user equipment is a mobile phone
  • the mobile phone can be designed to save the earphone socket, and the mobile phone can be made thinner.
  • the saved printed circuit board area can be used to achieve more functionality. For example, the space of the mobile phone antenna can be made larger, the signal of the mobile phone is better, or the battery space of the mobile phone can be increased, so that the standby time of the mobile phone is longer.
  • the user equipment described in the embodiments of the present invention may be a smart phone, a portable computer, a tablet computer, a desktop computer, or other suitable user equipment having a USB Type-C interface that supports analog audio output.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)

Abstract

一种用户设备，其包括：USB Type-C接口（41）、USB物理层（42）、音频编解码器（43）和模拟开关装置（SW1、SW2）。音频编解码器（43）的左声道端子（L）和右声道端子（R）与USB物理层（42）的数据传输端子复用所述USB Type-C接口（41）的D＋和D-引脚。第一模拟开关装置（SW1）被配置为在检测到USB Type-C接口（41）中插入的是模拟音频线缆时，将USB Type-C接口（41）的D＋和D-引脚切换到分别连接音频编解码器（43）的左声道端子（L）和右声道端子（R）。

Description

用户设备
相关申请的交叉参考
本申请要求于2016年3月25日提交中国专利局、申请号为201610177063.3、发明名称为“用户设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明的实施方式涉及用户设备，特别是具有如下USB TYPE-C接口的用户设备，该USB TYPE-C接口除可用于USB数据传输外，还兼容模拟耳机的音频传输。
背景技术
计算机已经得到普及，充分影响了人们的日常生活。它接口丰富：串口，并口，HDMI，SATA，等等。其中应用最广泛的当属通用串行总线接口，俗称USB。它不仅可以连接存储设备，还可以作为通用的扩展接口。随着科技的进步USB接口的速度越来越快，兼容的设备也越来越多。同时，USB接口的形态也历经变化，从TYPE A到MINI再到MICRO B。现如今最火的USB形态当属TYPE-C。它不仅速快，传输电流大，还支持正反插。可谓既方便又好用。
现有手机一般都有一个USB数字接口，和一个模拟耳机接口。图1所示为现有技术所提供的一种耳机插头的结构示意图。图2所示为现有技术提供的一种耳机插座的结构示意图。如图1和图2所示，耳机插头的直径一般为3.5mm，由于耳机插座需要能完全包住耳机插头，因此耳机插座的厚度不可能小于3.5mm，也就是说现有的耳机插座必须占用手机一定的印刷电路板(PCB)空间，这也是手机无法变薄的原因之一。
发明内容
有鉴于此，本发明实施例的目的在于针对现有技术的前述不足，提供一种新的模拟音频传输方案，使得用户设备可以设计的更轻便。
根据本发明的实施方式，提供一种用户设备，其包括：USB Type-C接口，兼容USB信号传递和模拟音频外设；USB物理层，用于和所述USB Type-C接口相连，从而实现USB信号传递；音频编解码器，用于和所述USB Type-C接口相连，从而实现模拟音频传输，其中，所述音频编解码器的左声道端子和右声道端子与所述USB物理层的数据传输端子，复用所述USB Type-C接口的D+和D-引脚；以及第一模拟开关装置，用于实现所述复用。所述第一模拟开关装置被配置为在检测到所述USB Type-C接口中插入的是模拟音频线缆时，将所述USB Type-C接口的D+和D-引脚切换到分别连接所述音频编解码器的左声道端子和右声道端子，并且在检测到所述USB Type-C接口中插入的是USB线缆时，将所述USB Type-C接口的D+和D-引脚切换到分别连接所述USB物理层的数据传输端子。
在一个实施例中，第一模拟开关装置或第二模拟开关装置被配置为通过检测所述USB Type-C接口的CC1和/或CC2引脚的电阻值来判断所述USB Type-C接口中插入的线缆类型。
进一步地，第一模拟开关装置或第二模拟开关装置被配置为在检测到所述USB Type-C接口的CC1引脚和VBUS引脚、以及CC2引脚和VBUS引脚之间的电阻值都小于1kΩ时，确定所述USB Type-C接口中插入的是模拟音频线缆。
在一个实施例中，该用户设备还包括第二模拟开关装置，用于利用所述USB Type-C接口的SBU1引脚或SBU2引脚来实现所述音频编解码器的麦克风数据传输。
进一步地，第二模拟开关装置被配置为通过检测所述USB Type-C接口的SBU1引脚或SBU2引脚的电阻值来判断所述USB Type-C接口中插入的模拟音频线缆是否支持麦克风。
在一个实施例中，该用户设备可以是智能手机、便携式计算机、平板电脑、台式计算机或者具有USB Type-C接口其支持模拟音频输出的其他适当的用户设备。
根据本发明的实施方式，可以直接利用USB Type-C接口来实现模拟音频传输功能，从而可以省略传统的模拟音频插口，比如3.5mm音频插口。进而，可以进一步地节省用户设备的刷电路板空间，从而可以使得用户设备制造的更为轻便。
附图概述
图1所示为现有技术所提供的一种耳机插头的结构示意图；
图2所示为现有技术提供的一种耳机插座的结构示意图；
图3示出了根据USB Type-C规范的插座引脚分配示意图；以及
图4示出了根据本发明一个实施方式的用户设备的原理示意图。
应当理解，附图仅是示例性的，未必依比例进行绘制，并且附图中相同的附图标记表示相同的元件。
部分附图标记及其含义说明书如下：
GND：接地
MIC：麦克风
USB PHY：USB物理层
CODEC：编解码器
MICBIAS：麦克风偏置
L：左声道
R：右声道
SW1：第一模拟开关装置
SW2：第二模拟开关装置
本发明的较佳实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不 应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
USB开发者论坛(USB-IF)于2014年8月11日发布了USB Type-C线缆和连接器规范(Universal Serial Bus Type-C Cable and Connector Specification)(版本1.0)，定义了Type-C插座接口的24个引脚及其分配。图3以主视图的形式示出了根据该USB Type-C规范的插座引脚的分配示意图。表1示出了24个引脚的标识、名称和描述。
表1
Figure PCTCN2016088660-appb-000001
根据USB Type-C规范，CC1和CC2是两个关键的引脚，作用很多，比如探测连接、区分正反面，配置VBUS引脚，配置其他模式(比如接音频配件、PCIE)等。两组TX/RX差分信号对用于USB3.1标准的数据传输，D+/D-差分信号对用于兼容USB2.0标准的数据传输。SBU1和SBU2引脚是Type-C规范的预留引脚，用于扩展功能使用。USB Type-C接口还包括4个接地引脚和4个电源引脚。
图4示出了根据本发明一个实施方式的用户设备(比如智能手机)的原理示意图。该用户设备包括：USB Type-C接口41、USB物理层(USB PHY)42、音频编解码器(CODEC)43、第一模拟开关装置SW1和第二模拟开关 装置SW2。如图所示，音频编解码器(CODEC)的左声道端子L和右声道端子R与USB物理层(USB PHY)的数据传输端子复用USB Type-C接口的D+和D-引脚。此外，USB Type-C规范的保留引脚SBU1和SBU2被用于音频编解码器的MIC信号的传输。
第一模拟开关装置SW1被配置为在检测到USB Type-C接口41中插入的是模拟音频线缆时，将USB Type-C接口的D+和D-引脚切换到分别连接音频编解码器43的左声道端子L和右声道端子R。第一模拟开关装置SW1还被配置为在检测到所述USB Type-C接口中插入的是USB线缆时，将所述USB Type-C接口的D+和D-引脚切换到分别连接USB物理层42的数据传输端子。
第二模拟开关装置SW2被配置为利用USB Type-C接口41的SBU1引脚或SBU2引脚来实现所述音频编解码器43的麦克风数据传输。如图4所示，当SBU1被用于连接模拟音频外设、比如耳机的MIC连接线时，SW2被配置为将SUB1切换至连接CODEC 43的MIC端子，同时使得SBU2作为该模拟音频外设的音频设备地；反之亦然。
如图4所示，D+引脚用于连接CODEC 43的左声道端子L，D-引脚用于连接CODEC的右声道端子L。但是应当理解，措词“左”和“右”是相对的概念，在具体实现中，也可以将D-引脚用于连接CODEC的左声道端子L，而D+引脚用于连接CODEC的右声道端子L。
根据本发明的实施方式，可以通过判断USB Type-C接口41中前述提及的引脚(D+、D-、SBU1和SBU2)之外的其他引脚的使用状态来判断USB Type-C接口中插入的线缆类型。
在一个实施例中，当插入的线缆类型是模拟音频线缆时，USB Type-C接口41中的前述提及的引脚之外的很多引脚都处于“悬空”的高阻值状态。作为示例，可以通过检测USB Type-C接口的CC1和/或CC2引脚的电阻值来判断USB Type-C接口中插入的线缆类型，即，是USB Type-C线缆还是模拟音频线缆。
在另一个实施例中，可以配置用于与用户设备的USB Type-C接口41相适配的模拟音频线缆接口，以便第一模拟开关装置SW1和/或第二模拟开 关装置SW2能够检测出插入的线缆类型。例如，使用用户设备的USB Type-C接口CC1、CC2引脚和GND引脚，GND引脚用于与模拟音频线缆接口的GND相连接，并且模拟音频线缆接口被配置为在与用户设备的USB Type-C接口CC1和CC2和其内部GND之间设置一电阻，该电阻的电阻值与标准USB Type-C接口(比如USB插头)的CC1、CC2引脚出的电阻(通常时5.1kΩ)。从而，SW1通过检测CC1、CC2引脚与GND之间的电阻，可以判断出USB Type-C接口(比如USB插座)中插入的线缆类型。例如，SW可以被配置为在检测到所述USB Type-C接口的CC1引脚和GND引脚、以及CC2引脚和GND引脚之间的电阻值都小于1kΩ时，确定所述USB Type-C接口中插入的是模拟音频线缆。
根据本发明的实施方式，USB Type-C规范的保留引脚SBU1和SBU2被用于音频编解码器的MIC信号的传输。然而，应当理解，图4所示的第二模拟开关装置SW2是可选的部件，比如，在插入USB Type-C接口41的模拟音频线缆不支持麦克风(MIC)或者用户设备内部的CODEC不支持MIC的情况下，不必设置SW2。
在一个实施例中，可以配置用于与用户设备的USB Type-C接口41的SBU1或SBU2相适配的模拟音频线缆接口的MIC连接线，以便第二模拟开关装置SW2能够检测出插入的模拟音频线缆是否支持MIC。例如，通过检测SBU1或SBU2引脚是否出于未被连接的“悬空”状态，即可判断出是否连接了模拟音频线缆接口的MIC连接线。作为示例，如果检测到SBU1引脚处于被使用的状态、而SBU2引脚仍处于未被使用的“悬空”状态，则SW2可以将SBU1引脚切换到与CODEC的MIC端子相连，而将SBU1引脚切换到连接至接地点。SBU1或SBU2引脚的“悬空”状态例如可以通过检测该引脚与接地点之间的电阻值而获得。
备选地，也可以配置用于与用户设备的USB Type-C接口41的SBU1或SBU2相适配的模拟音频线缆接口的MIC连接线与接地点之间的电阻值，使得其处于一个特定范围，从而，通过检测用户设备的USB Type-C接口的SBU1或SBU2与接地点之间的电阻值是否出于该特定范围，就可以检测出那个引脚支持MIC信号传输。
根据本发明的实施方式，可以直接利用用户设备的USB Type-C接口来实现模拟音频传输功能，从而可以省略传统的模拟音频插口，比如3.5mm音频插口。在用户设备是手机时，使得手机在设计时可以省掉耳机插座，可使手机做的更薄。此外，节省出来的印刷电路板面积可以用来实现更多的功能。例如，可使手机天线的净空空间更大，手机信号更好，或可增大手机的电池空间，以使手机的待机时间更长等。
应当理解，本发明实施方式所述的用户设备可以是智能手机、便携式计算机、平板电脑、台式计算机或者具有USB Type-C接口其支持模拟音频输出的其他适当的用户设备。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换等，均应包含在本发明的保护范围之内。

Claims (6)

  1. 一种用户设备，包括：
    USB Type-C接口，兼容USB信号传递和模拟音频外设；
    USB物理层，用于和所述USB Type-C接口相连，从而实现USB信号传递；
    音频编解码器，用于和所述USB Type-C接口相连，从而实现模拟音频传输，其中，所述音频编解码器的左声道端子和右声道端子与所述USB物理层的数据传输端子，复用所述USB Type-C接口的D+和D-引脚；以及
    第一模拟开关装置，用于实现所述复用，其中，所述第一模拟开关装置被配置为在检测到所述USB Type-C接口中插入的是模拟音频线缆时，将所述USB Type-C接口的D+和D-引脚切换到分别连接所述音频编解码器的左声道端子和右声道端子，并且在检测到所述USB Type-C接口中插入的是USB线缆时，将所述USB Type-C接口的D+和D-引脚切换到分别连接所述USB物理层的数据传输端子。
  2. 根据权利要求1所述的用户设备，其中，所述第一模拟开关装置被配置为通过检测所述USB Type-C接口的CC1和/或CC2引脚的电阻值来判断所述USB Type-C接口中插入的线缆类型。
  3. 根据权利要求2所述的用户设备，其中，所述第一模拟开关装置被配置为在检测到所述USB Type-C接口的CC1引脚和GND引脚、以及CC2引脚和GND引脚之间的电阻值都小于1kΩ时，确定所述USB Type-C接口中插入的是模拟音频线缆。
  4. 根据权利要求1-3中任一项所述的用户设备，还包括：
    第二模拟开关装置，被配置为利用所述USB Type-C接口的SBU1引脚或SBU2引脚来实现所述音频编解码器的麦克风数据传输。
  5. 根据权利要求4所述的用户设备，其中，所述第二模拟开关装置被配置为通过检测所述USB Type-C接口的SBU1引脚或SBU2引脚的电阻值来判断所述USB Type-C接口中插入的模拟音频线缆是否支持麦克风。
  6. 根据权利要求1-3中任一项所述的用户设备，其中，所述用户设备是 智能手机、便携式计算机、平板电脑或者台式计算机。
PCT/CN2016/088660 2016-03-25 2016-07-05 用户设备 Ceased WO2017161746A1 (zh)

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