WO2012009984A1 - 耳机和USB共用Micro-USB接口的方法及装置 - Google Patents

耳机和USB共用Micro-USB接口的方法及装置 Download PDF

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Publication number
WO2012009984A1
WO2012009984A1 PCT/CN2011/072237 CN2011072237W WO2012009984A1 WO 2012009984 A1 WO2012009984 A1 WO 2012009984A1 CN 2011072237 W CN2011072237 W CN 2011072237W WO 2012009984 A1 WO2012009984 A1 WO 2012009984A1
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WIPO (PCT)
Prior art keywords
usb
micro
module
interface
usb interface
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PCT/CN2011/072237
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English (en)
French (fr)
Inventor
顾建良
顾瞻
Original Assignee
惠州Tcl移动通信有限公司
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Filing date
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Application filed by 惠州Tcl移动通信有限公司 filed Critical 惠州Tcl移动通信有限公司
Priority to US13/807,004 priority Critical patent/US9414147B2/en
Priority to EP11809173.5A priority patent/EP2597844B1/en
Priority to ES11809173.5T priority patent/ES2643037T3/es
Publication of WO2012009984A1 publication Critical patent/WO2012009984A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041Mechanical or electronic switches, or control elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041Portable telephones adapted for handsfree use
    • H04M1/6058Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/382Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/40Bus structure
    • G06F13/4063Device-to-bus coupling
    • G06F13/409Mechanical coupling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43632Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394

Definitions

  • the present invention relates to the field of mobile devices, and in particular, to a method and apparatus for sharing a Micro-USB interface between a headset and a USB.
  • the Micro-USB 5pin (micro-USB 5-pin) interface is becoming more and more widely used, and has become the standard interface for mobile phone design in Europe and America.
  • Mini-USB lOpin (mini-USB 10 pin) interface will be phased out. .
  • the Mini-USB lOpin interface can be used to multiplex the headphone and USB functions.
  • Micro-USB (micro-USB) interface it is difficult to reuse the USB and headphone functions in the original way due to the limitation of the number of pins.
  • analog switching devices can be added to achieve multiplexing, but at an additional cost.
  • the technical problem to be solved by the present invention is to provide a method and a device for sharing a Micro-USB interface between an earphone and a USB, which can realize a Micro-USB interface of a headphone and a USB multiplexed 5-pin, and aim at the above-mentioned defects of the prior art, and The structure is simple and the implementation cost is low.
  • a device for sharing a Micro-USB interface between an earphone and a USB comprising a Micro-USB interface module disposed on the device, and further comprising a control module and an interface detection module connected to the Micro-USB interface module,
  • the interface detecting module is configured to detect whether the Micro-USB interface is inserted into a USB cable or a headphone cable, and generate a corresponding control signal to the control module;
  • the control module is respectively connected to the audio circuit and the USB data transceiver circuit, and is configured to select to start a USB task or open an audio channel according to the control signal.
  • the device that shares the Micro-USB interface between the earphone and the USB, wherein the device further includes an audio circuit, a USB data transceiver circuit, and a charging circuit respectively connected to the control module.
  • the interface detecting module detects that the Micro-USB interface is inserted into the USB cable, generates a first control signal to the control module, and the control module controls the selection of the Micro-USB interface according to the first control signal.
  • USB data transceiver circuit and/or charging circuit connection to initiate a USB task;
  • the interface detecting module detects that the Micro-USB interface is inserted into the earphone cable, generates a second control signal to the control module, and the control module controls the selection of the Micro-USB interface according to the second control signal.
  • the audio circuit is connected to open the audio path.
  • the interface detecting module includes a USB detecting unit connected to the VBUS end of the Micro-USB interface module, and configured to detect the high level of the Micro-USB interface module when the VBUS end is high level The first control signal is sent to the control module.
  • the interface detecting module further includes a channel detecting unit connected to the USB-DP end of the Micro-USB interface module, configured to detect that the USB-DP terminal of the Micro-USB interface module is low, and the low The level is converted to the second control signal and sent to the control module.
  • a method for sharing a Micro-USB interface between a headset and a USB includes the following steps:
  • the interface detection module detects whether the Micro-USB interface is inserted into the USB cable or the headphone cable, and generates a corresponding control signal to the control module;
  • the control module selects to start a USB task or open an audio channel according to the control signal.
  • the method for sharing the Micro-USB interface between the earphone and the USB wherein the step A specifically includes the following steps: Al.
  • the interface detection module detects that the VBUS terminal of the Micro-USB interface module is at a high level, and converts the high level into a first control signal and sends the signal to the control module;
  • the interface detection module detects that the USB-DP terminal of the Micro-USB interface module is low, and converts the low level into a second control signal and sends it to the control module. .
  • step B specifically includes the following steps:
  • control module When the control module receives the first control signal that the VBUS terminal of the Micro-USB interface module is at a high level, the control selects to start the USB task.
  • control module When the control module receives the second control signal that the USB-DP end of the Micro-USB interface module is low, the control selects to open the audio channel.
  • the method and device for sharing the Micro-USB interface between the earphone and the USB provided by the invention can realize the function of the earphone and the USB on a Micro-USB interface, that is, the charger, the data line and the earphone are three-in-one, and the structure is simple, and the realization cost low.
  • FIG. 1 is a block diagram showing the structure of a device for sharing a Micro-USB interface between a headset and a USB according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of connection of an interface detection module according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for sharing a Micro-USB interface between a headset and a USB according to an embodiment of the present invention. ⁇ detailed description ⁇
  • the present invention provides a method and an apparatus for sharing a Micro-USB interface with an earphone and a USB.
  • the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • the standard MICRO-USB (micro USB) interface includes 5 pins.
  • the 5 pins (5 pins) of the MICRO-USB (micro USB) interface are respectively defined as:
  • Pin 1 (1st pin): Vbus terminal (USB power);
  • Pin 2 USB_DM end (multiplexed to the left channel of the headphones);
  • Pin 3 (pin 3): USB _DP end (multiplexed to the right channel of the headset);
  • Pin 4 (pin 4): ID terminal (multiplexed into a headset microphone);
  • Pin 5 (pin 5): GND ground.
  • the device for sharing the Micro-USB interface between the earphone and the USB provided by the embodiment of the present invention includes a Micro-USB interface module 110 disposed on the device, and the Micro-USB interface module 110 is standard.
  • Micro-USB interface including Micro-USB male and Micro-USB female.
  • the device of the present invention further includes a control module 120 and an interface detection module 130 connected to the Micro-USB interface module 110, and an audio circuit 140 and a USB data transceiver circuit 150 respectively connected to the control module 120. Charging circuit 160.
  • the interface detecting module 130 is configured to detect whether the Micro-USB interface 110 is inserted into a USB cable or a headphone cable, and generate a corresponding control signal to the control module 120.
  • the specific implementation of the interface detection module 130 may include a USB detecting unit 131 and a channel detecting unit 132, as shown in FIG. 2:
  • the USB detecting unit 131 is connected to the VBUS end of the Micro-USB interface module 110, and is configured to convert the high level to the first when the VBUS end of the Micro-USB interface module 110 is high.
  • the control signal is sent to the control module 120.
  • the channel detecting unit 132 is connected to the USB DP end of the Micro-USB interface module 110. When it is detected that the USB-DP terminal of the Micro-USB interface module is low, the low level is converted to the second control signal and sent to the control module 120.
  • control module 120 is configured to select to start a USB task or open an audio channel according to the control signal.
  • the specific implementation principles of the control module 120 include:
  • control module When the control module receives the first control signal that the VBUS end of the Micro-USB interface module sent by the interface detection module is a high level, the control selects to start the USB task.
  • control module When the control module receives the second control signal that the USB-DP end of the Micro-USB interface module sent by the interface detection module is low, the control selects to start the USB task to open the audio channel.
  • the device for sharing the Micro-USB interface between the earphone and the USB provided by the embodiment of the present invention, the control module 120 and the interface detection module can be integrated into one chip and implemented by software, as shown in FIG. 1 and FIG. 2, and the implementation principle is as follows:
  • the interface detecting module 130 detects that the Micro-USB interface 110 is inserted into the USB cable
  • the interface detecting module 130 detects that the VBUS terminal of the Micro-USB interface module 110 is at a high level, and converts the high level into
  • the first control signal is sent to the control module 120
  • the control module 120 controls the selection of the Micro-USB interface to connect with the USB data transceiver circuit 150 and/or the charging circuit 160 according to the first control signal to start the USB.
  • Mission to achieve USB data transceiving and / or charging functions.
  • the device of the present invention detects this voltage, recognizes the insertion of the USB cable, then runs the USB program, starts the USB task, and performs USB data transmission and reception. Or charging. While the USB data is being transmitted and received and/or charged, the left and right channel outputs of the headphones are set to the MUTE mode (floating mode) by the software control of the control module 120, which can reduce the influence of the left and right channels on the USB data communication.
  • MUTE mode floating mode
  • a second control signal is generated to the control module 120 (ie, the interface detecting module 130 detects the USB-DP of the Micro-USB interface module 110).
  • the terminal is low, and the low level is converted into a second control signal and sent to the control module 120), and the control module 120 controls the selection according to the second control signal.
  • the Micro-USB interface 110 is connected to the audio circuit 140 to open the audio path, that is, to open the left and right channel channels of the headphones to implement an audio listening function.
  • the USB-DP end is pulled low by the resistor, and the device of the present invention detects this low level, which can be recognized as the insertion of the headphone cord, and then Turn on the left and right channel of the headphones.
  • the USB-DM terminal and the USB-DP signal of the mobile phone are set to a high-impedance state, which can reduce the influence of the USB-DM terminal and the USB-DP terminal on the left and right channel signals of the earphone.
  • the general device such as a mobile phone functions as a USB client (client) and not as a host. Therefore, the ID terminal pin of the Micro-USB interface can be omitted, and in the present invention, the Micro-USB interface will be The ID pin is multiplexed into the headphone microphone interface.
  • the invention directly connects the earphone cable to the Micro-USB interface, and the software control method eliminates an analog switch IC, which saves cost, and can realize the function of the earphone and the USB on a Micro-USB interface, that is, charging.
  • the structure is simple, and the implementation cost is low.
  • the embodiment of the present invention further provides a method for sharing a Micro-USB interface between a headset and a USB. As shown in FIG. 3, the method includes the following steps:
  • Step S310 the interface detecting module detects whether the Micro-USB interface is inserted into the USB cable or the earphone cable, and generates a corresponding control signal to the control module;
  • Step S320 The control module selects to start a USB task or open an audio channel according to the control signal.
  • the step S310 specifically includes the following steps:
  • Step S311 when the Micro-USB interface module is inserted into the USB cable, the interface detecting module detects that the VBUS terminal of the Micro-USB interface module is at a high level, and converts the high level into a first control signal and sends the signal to the control module;
  • Step S312 When the Micro-USB interface module is inserted into the earphone cable, the interface detecting module detects that the USB-DP end of the Micro-USB interface module is low, and converts the low level into the second control signal. The number is sent to the control module.
  • the step S320 specifically includes the following steps:
  • Step S321 When the control module receives the first control signal of the high level of the VBUS end of the Micro-USB interface module, the control selects to start the USB task.
  • Step S322 When the control module receives the second control signal that the USB-DP end of the Micro-USB interface module is low, the control selects to open the audio channel.
  • the method and device for sharing the Micro-USB interface between the earphone and the USB provided by the invention can realize the function of the earphone and the USB on a Micro-USB interface, that is, the charger, the data line and the earphone are three-in-one, and the structure is simple, and the realization cost low.

Description

耳机和 USB共用 Micro-USB接口的方法及装置
【技术领域】
本发明涉及移动设备领域, 尤其涉及的是一种耳机和 USB共用 Micro-USB 接口的方法及装置。
【背景技术】
Micro-USB 5pin (微型 -USB 5针)接口越来越被广泛使用, 并已成为欧美 手机设计的标准接口, 而现常用的 Mini-USB lOpin (迷你 -USB 10针)接口将会 被逐步淘汰。 原来利用 Mini-USB lOpin接口可实现耳机和 USB功能复用, 但替 换为 Micro-USB (微型 -USB )接口, 则会因引脚数量限制而难以用原来的方式 实现 USB和耳机功能复用。 通常情况下, 可以增加模拟开关器件来实现复用, 但会额外增加成本。
因此, 现有技术还有待于改进和发展。
【发明内容】
本发明要解决的技术问题在于, 针对现有技术的上述缺陷, 提供一种耳机 和 USB共用 Micro-USB接口的方法及装置, 其可以实现耳机和 USB复用 5针 的 Micro-USB接口, 并且结构简单, 实现成本低。
本发明解决技术问题所釆用的技术方案如下:
一种耳机和 USB共用 Micro-USB接口的装置, 包括设置在所述装置上的 Micro-USB接口模块, 其中, 还包括与所述 Micro-USB接口模块连接的控制模 块和接口检测模块,
所述接口检测模块用于检测所述 Micro-USB接口是否插入 USB线或耳机 线, 并产生相应的控制信号给所述控制模块; 所述控制模块分别与音频电路和 USB数据收发电路连接, 用于根据所述控 制信号选择启动 USB任务或打开音频通路。
所述耳机和 USB共用 Micro-USB接口的装置, 其中, 其还包括分别与所述 控制模块连接的音频电路、 USB数据收发电路及充电电路,
当所述接口检测模块检测所述 Micro-USB接口插入 USB线时,产生第一控 制信号至所述控制模块, 所述控制模块根据所述第一控制信号控制选择所述 Micro-USB接口与所述 USB数据收发电路和 /或充电电路连接, 以启动 USB任 务;
当所述接口检测模块检测所述 Micro-USB接口插入耳机线时, 产生第二控 制信号至所述控制模块, 所述控制模块根据所述第二控制信号控制选择所述 Micro-USB接口与所述音频电路连接, 以打开音频通路。
所述耳机和 USB共用 Micro-USB接口的装置, 其中,
所述接口检测模块包括与所述 Micro-USB接口模块的 VBUS端连接的 USB 检测单元, 用于检测到 Micro-USB接口模块的 VBUS端为高电平时, 将所述高 电平转为所述第一控制信号发送至控制模块。
所述耳机和 USB共用 Micro-USB接口的装置, 其中,
所述接口检测模块还包括与所述 Micro-USB接口模块的 USB— DP端连接的 声道检测单元, 用于检测到 Micro-USB接口模块的 USB— DP端为低电平时, 并 将该低电平转为所述第二控制信号发送到控制模块。
一种耳机和 USB共用 Micro-USB接口的方法, 其中, 包括步骤:
A、 接口检测模块检测 Micro-USB接口是否插入 USB线或耳机线, 并产生 相应的控制信号给控制模块;
B、 控制模块根据所述控制信号选择启动 USB任务或打开音频通路。
所述耳机和 USB共用 Micro-USB接口的方法,其中,所述步骤 A具体包括 步骤: Al、 当 Micro-USB 接口模块有插入 USB 线时, 接口检测模块检测到 Micro-USB接口模块的 VBUS端为高电平, 并将该高电平转换为第一控制信号 发送至控制模块;
A2、 当 Micro-USB 接口模块有插入耳机线时, 接口检测模块检测到 Micro-USB接口模块的 USB-DP端为低电平, 并将该低电平转换为第二控制信 号发送至控制模块。
所述耳机和 USB共用 Micro-USB接口的方法, 其中, 所述步骤 B具体包括 步骤:
B1、 所述控制模块接收到所述 Micro-USB接口模块的 VBUS端为高电平的 第一控制信号时, 控制选择启动 USB任务。
B2、 所述控制模块接收到所述 Micro-USB接口模块的 USB-DP端为低电平 的第二控制信号时, 控制选择打开音频通路。
本发明所提供的耳机和 USB共用 Micro-USB接口的方法及装置,可以在一 个 Micro-USB接口上实现耳机和 USB功能, 即充电器、 数据线、 耳机三合一, 并且结构简单, 实现成本低。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 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发明 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的前提下, 还可以根据这些附图获得其他的附图。 其中:
图 1是本发明实施例提供的耳机和 USB共用 Micro-USB接口的装置原理结 构框图;
图 2是本发明实施例的接口检测模块连接示意图;
图 3是本发明实施例提供的耳机和 USB共用 Micro-USB接口的方法流程图。 【具体实施方式】
本发明所提供的耳机和 USB共用 Micro-USB接口的方法及装置,为使本发 明的目的、 技术方案及优点更加清楚、 明确, 以下参照附图并举实施例对本发 明进一步详细说明。 应当理解, 此处所描述的具体实施例仅仅用以解释本发明, 并不用于限定本发明。
标准的 MICRO-USB (微型 USB )接口包括 5针, 本发明中, 如图 2所示, 所述 MICRO-USB (微型 USB )接口的 5pin ( 5针)分别定义为:
Pin 1 (第 1针): Vbus端 (USB电源);
Pin 2 (第 2针): USB_DM端 (复用为耳机左声道);
Pin 3 (第 3针): USB _DP端 (复用为耳机右声道);
Pin 4 (第 4针): ID端 (复用为耳机麦克风);
Pin 5 (第 5针): GND地端。
本发明实施例提供的一种耳机和 USB共用 Micro-USB接口的装置, 如图 1 所示, 包括设置在所述装置上的 Micro-USB接口模块 110 , 该 Micro-USB接口 模块 110为标准的 Micro-USB接口, 包括 Micro-USB公座和 Micro-USB母座。
本发明所述的装置还包括与所述 Micro-USB接口模块 110连接的控制模块 120和接口检测模块 130 , 以及还包括分别与所述控制模块 120连接的音频电路 140、 USB数据收发电路 150及充电电路 160。
所述接口检测模块 130用于检测所述 Micro-USB接口 110是否插入 USB线 或耳机线, 并产生相应的控制信号给所述控制模块 120; 为了实现对所述 USB 线或耳机线的检测,所述接口检测模块 130具体实现可以包括 USB检测单元 131 和声道检测单元 132 , 如图 2所示:
所述 USB检测单元 131与所述 Micro-USB接口模块 110的 VBUS端连接, 用于检测到 Micro-USB接口模块 110的 VBUS端为高电平时, 将所述高电平转 为所述第一控制信号发送至控制模块 120。
所述声道检测单元 132与所述 Micro-USB接口模块 110的 USB DP端连接, 用于检测到 Micro-USB接口模块的 USB— DP端为低电平时, 将该低电平转为所 述第二控制信号发送到控制模块 120。
如图 1所示, 所述控制模块 120用于根据所述控制信号选择启动 USB任务 或打开音频通路。 所述控制模块 120具体的实现原理包括:
B1、 所述控制模块接收到所述接口检测模块发来的所述 Micro-USB接口模 块的 VBUS端为高电平的第一控制信号时, 控制选择启动 USB任务。
B2、 所述控制模块接收到所述接口检测模块发来的所述 Micro-USB接口模 块的 USB-DP端为低电平的第二控制信号时, 控制选择启动 USB任务打开音频 通路。
上述本发明实施例提供的耳机和 USB共用 Micro-USB接口的装置,其控制 模块 120和接口检测模块都可以集成在一个芯片中通过软件实现,如图 1和图 2 所示, 实现原理为: 当所述接口检测模块 130检测所述 Micro-USB接口 110插 入 USB线时, 所述接口检测模块 130检测到 Micro-USB接口模块 110的 VBUS 端为高电平, 并将该高电平转换为第一控制信号发送至控制模块 120, 所述控制 模块 120则根据所述第一控制信号控制选择所述 Micro-USB接口与所述 USB数 据收发电路 150和 /或充电电路 160连接, 以启动 USB任务, 实现 USB数据收 发和 /或充电功能。
即, 如果用户插入 USB线, VBUS上会出现 PC端输入的 5V电压, 本发明 的装置检测到这个电压, 识别为 USB线的插入, 然后运行 USB的程序, 启动 USB任务,进行 USB数据收发和或充电。 而 USB数据收发和 /或充电在工作时, 通过控制模块 120的软件控制将耳机左右声道输出设置为 MUTE模式(浮空模 式), 这样可以减少左右声道对 USB数据通信的影响。
而当所述接口检测模块 130检测所述 Micro-USB接口 110插入耳机线时, 产生第二控制信号至所述控制模块 120 (即接口检测模块 130检测到 Micro-USB 接口模块 110的 USB-DP端为低电平, 并将该低电平转换为第二控制信号发送 至控制模块 120 ), 所述控制模块 120 根据所述第二控制信号控制选择所述 Micro-USB接口 110与所述音频电路 140连接, 以打开音频通路, 即打开耳机 左右声道通路以实现音频收听功能。
即, 如果用户插入耳机线, 因为耳机的扬声器标称阻抗为 32 欧姆, 所以 USB-DP端被该电阻拉低, 本发明的装置检测到这个低电平, 可以识别为耳机线 的插入, 然后打开耳机左右声道通路。
而打开音频通路耳机在工作的时候, 将手机的 USB— DM端、 USB— DP端信 号设置为高阻状态, 这样可以减少 USB— DM端、 USB— DP端对于耳机左右声道 信号的影响。
而一般的装置如手机都作为 USB client (客户端) 而不做为 host (主机), 因此可将 Micro-USB接口的 ID端引脚可以省略,而在本发明中将将 Micro-USB 接口的 ID端引脚复用为耳机麦克风接口。
由上可见, 发明通过直接将耳机线连接到 Micro-USB接口上, 通过软件控 制方式, 省去了一个模拟开关 IC, 节约成本, 可以在一个 Micro-USB接口上实 现耳机和 USB功能, 即充电器、 数据线、 耳机三合一, 并且结构简单, 实现成 本低。
基于上述装置,本发明实施例还提供了一种耳机和 USB共用 Micro-USB接 口的方法, 如图 3所示, 包括以下步骤:
步骤 S310、 接口检测模块检测 Micro-USB接口是否插入 USB线或耳机线, 并产生相应的控制信号给控制模块;
步骤 S320、控制模块根据所述控制信号选择启动 USB任务或打开音频通路。 进一步的实施例, 所述步骤 S310具体包括步骤:
步骤 S311、 当 Micro-USB接口模块有插入 USB线时, 接口检测模块检测 到 Micro-USB接口模块的 VBUS端为高电平, 并将该高电平转换为第一控制信 号发送至控制模块;
步骤 S312、 当 Micro-USB接口模块有插入耳机线时, 接口检测模块检测到 Micro-USB接口模块的 USB-DP端为低电平, 并将该低电平转换为第二控制信 号发送至控制模块。
所述步骤 S320具体包括步骤:
步骤 S321、所述控制模块接收到所述 Micro-USB接口模块的 VBUS端为高 电平的第一控制信号时, 控制选择启动 USB任务。
步骤 S322、 所述控制模块接收到所述 Micro-USB接口模块的 USB-DP端为 低电平的第二控制信号时, 控制选择打开音频通路。
本发明所提供的耳机和 USB共用 Micro-USB接口的方法及装置,可以在一 个 Micro-USB接口上实现耳机和 USB功能, 即充电器、 数据线、 耳机三合一, 并且结构简单, 实现成本低。
应当理解的是, 在上述实施例中, 仅对本发明进行了示范性描述, 但是本 领域技术人员在阅读本专利申请后可以在不脱离本发明的精神和范围的情况下 对本发明进行各种修改, 所有这些改进和变换都应属于本发明所附权利要求的 保护范围。

Claims

权 利 要求
1、 一种耳机和 USB共用 Micro-USB接口的装置, 包括设置在所述装置上 的 Micro-USB接口模块, 其特征在于, 还包括与所述 Micro-USB接口模块连接 的控制模块和接口检测模块,
所述接口检测模块用于检测所述 Micro-USB接口是否插入 USB线或耳机 线, 并产生相应的控制信号给所述控制模块;
所述控制模块用于根据所述控制信号选择启动 USB任务或打开音频通路。
2、 根据权利要求 1所述耳机和 USB共用 Micro-USB接口的装置, 其特征 在于, 其还包括分别与所述控制模块连接的音频电路、 USB数据收发电路及充 电电路,
当所述接口检测模块检测所述 Micro-USB接口插入 USB线时,产生第一控 制信号至所述控制模块, 所述控制模块根据所述第一控制信号控制选择所述 Micro-USB接口与所述 USB数据收发电路和 /或充电电路连接, 以启动 USB任 务;
当所述接口检测模块检测所述 Micro-USB接口插入耳机线时, 产生第二控 制信号至所述控制模块, 所述控制模块根据所述第二控制信号控制选择所述 Micro-USB接口与所述音频电路连接, 以打开音频通路。
3、 根据权利要求 2所述耳机和 USB共用 Micro-USB接口的装置, 其特征 在于,
所述接口检测模块包括与所述 Micro-USB接口模块的 VBUS端连接的 USB 检测单元, 用于检测到 Micro-USB接口模块的 VBUS端为高电平时, 将所述高 电平转为所述第一控制信号发送至控制模块。
4、 根据权利要求 2所述耳机和 USB共用 Micro-USB接口的装置, 其特征 在于,
所述接口检测模块还包括与所述 Micro-USB接口模块的 USB DP端连接的 声道检测单元, 用于检测到 Micro-USB接口模块的 USB— DP端为低电平时, 并 将该低电平转为所述第二控制信号发送到控制模块。
5、 一种耳机和 USB共用 Micro-USB接口的方法, 其特征在于, 包括步骤:
A、 接口检测模块检测 Micro-USB接口是否插入 USB线或耳机线, 并产生 相应的控制信号给控制模块;
B、 控制模块根据所述控制信号选择启动 USB任务或打开音频通路。
6、 根据权利要求 5所述耳机和 USB共用 Micro-USB接口的方法, 其特征 在于, 所述步骤 A具体包括步骤:
Al、 当 Micro-USB 接口模块有插入 USB 线时, 接口检测模块检测到 Micro-USB接口模块的 VBUS端为高电平, 并将该高电平转换为第一控制信号 发送至控制模块;
A2、 当 Micro-USB 接口模块有插入耳机线时, 接口检测模块检测到 Micro-USB接口模块的 USB-DP端为低电平, 并将该低电平转换为第二控制信 号发送至控制模块。
7、 根据权利要求 6所述耳机和 USB共用 Micro-USB接口的方法, 其特征 在于, 所述步骤 B具体包括步骤:
B1、 所述控制模块接收到所述 Micro-USB接口模块的 VBUS端为高电平的 第一控制信号时, 控制选择启动 USB任务。
B2、 所述控制模块接收到所述 Micro-USB接口模块的 USB-DP端为低电平 的第二控制信号时, 控制选择打开音频通路。
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EP2597844A4 (en) 2014-02-12
US9414147B2 (en) 2016-08-09
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CN101917497B (zh) 2014-04-16
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