WO2023024015A1 - 多功能电子设备 - Google Patents
多功能电子设备 Download PDFInfo
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- WO2023024015A1 WO2023024015A1 PCT/CN2021/114726 CN2021114726W WO2023024015A1 WO 2023024015 A1 WO2023024015 A1 WO 2023024015A1 CN 2021114726 W CN2021114726 W CN 2021114726W WO 2023024015 A1 WO2023024015 A1 WO 2023024015A1
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- electronic device
- multifunctional electronic
- interface
- audio
- button
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- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000003032 molecular docking Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000005236 sound signal Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 208000025721 COVID-19 Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
Classifications
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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
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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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Definitions
- the present application relates to the field of electronic technology, in particular to a multifunctional electronic device.
- One of the objectives of the embodiments of the present application is to provide a multifunctional electronic device.
- a multifunctional electronic device which includes a casing and a speaker fixed on the casing, a circuit board is arranged inside the casing, and the multifunctional electronic device is provided with a main Interface and several expansion interfaces connected with the main interface, the circuit board is provided with a multi-port repeater, an audio processor, a digital-to-analog audio converter and an audio power amplifier connected with the speaker in sequence, the The expansion interface is connected to the main interface or the multi-port repeater, and the housing is also provided with a first button connected to the audio processor, a second button connected to the multi-port repeater, and a setting
- the controller on the circuit board, the first button is used to control the volume of the audio played by the speaker; the second button is used for answering and hanging up control, or for starting and pausing control; the controller and The first button and the second button are connected to identify the button operation of the first button and the second button and output a corresponding control signal to the audio processor or the multi-port repeater.
- a power interface is also included, and the power interface is connected to the main interface.
- the main interface is a type-C interface
- the power interface is a TYPE-C PD.
- the expansion interface includes several USB interfaces and HDMI interfaces, the USB interfaces are connected to the multi-port repeater, and the HDMI interfaces are connected to the main interface.
- the multi-port repeater includes a hub chip VL817.
- the audio processor includes an audio processing chip XVF3000.
- the digital-to-analog audio converter includes a digital-to-analog audio conversion chip HT5010.
- the audio power amplifier includes an audio power amplifier chip HT6872.
- the HDMI interface communicates with the main interface through a video conversion chip.
- the multifunctional electronic device is a sound box, a display screen or a docking station.
- the multifunctional electronic device provided by the embodiment of the present application has functions of sound playing, volume adjustment and docking station.
- FIG. 1 is a block diagram of a multifunctional electronic device provided in Embodiment 1 of the present application;
- Fig. 2 is a module block diagram of the multifunctional electronic device provided by Embodiment 2 of the present application;
- FIG. 3 is a module block diagram of a multifunctional electronic device provided in Embodiment 3 of the present application.
- some embodiments of the present application provide a multifunctional electronic device, and the multifunctional electronic device may be a sound box, a display screen or a docking station.
- the multifunctional electronic device includes a housing and a speaker 11 fixed on the housing.
- a circuit board is arranged inside the housing.
- the multifunctional electronic device is provided with a plurality of expansion interfaces 13 for connecting the main interface 12 of the external host 200 to the main interface 12.
- the circuit board is provided with a sequentially connected multi-port transponder 15 (HUB), audio processor 16, digital-to-analog audio converter 17 and audio power amplifier 18 connected to the speaker 11, the expansion interface 13 and the main interface 12 or multi-port transponder 15, the casing is also provided with a first button 14 connected to the audio processor 16 and a second button 22 connected to the multi-port repeater 15, the first button 14 is used to control the volume of the audio played by the speaker 11; Two buttons 22 are used for answering and hanging up control, or for starting and suspending control; the controller 23 is connected with the first button 14 and the second button 22, and is used to identify the button operation output of the first button 14 and the second button 22 Corresponding control signals to the audio processor 16 or the multiport repeater 15 .
- UOB multi-port transponder 15
- audio processor 16 digital-to-analog audio converter 17 and audio power amplifier 18 connected to the speaker 11, the expansion interface 13 and the main interface 12 or multi-port transponder 15
- the casing is also provided with a first button 14
- the multifunctional electronic device has interface conversion and expansion functions, and on this basis, it also integrates the broadcasting function, and sets the first case for adjusting the volume, and can be used for answering and hanging up control, or for starting and pausing control the second key of the This makes it easy for the user to operate during use and improves the user experience.
- a single product of the multifunctional electronic device can be used to form a conference system, which is easy to operate and has rich functions.
- the first button 14 is used to control the volume of the multifunctional electronic device, so its control signal is output to the audio processor 16 to adjust the power of playing audio signals.
- the specific address is that the first button 14 transmits the electrical signal generated by the trigger or the length of the button time to the controller 23 (such as a single-chip microcomputer), and the controller 23 can transmit the functional state to be achieved by the first button 14 according to the written program.
- the controller 23 such as a single-chip microcomputer
- the second key 22 is used to control the answering and hanging up of the external host 200 (such as calling, live broadcast), or to start and pause control (such as controlling audio and video playback). Therefore, the second key 22 is transmitted to the controller 23 (such as a single-chip microcomputer) through the multi-port transponder 15 according to the state of the key, and the controller 23 sends a control signal to the external host 200 according to the written program to control the answering/hanging up state or pause/start state. It can be understood that the key operations of the first key 14 and the second key 22 can modify the settings of the controller 23 according to requirements.
- Expansion interface 13 includes several Universal Serial Buses (Universal Serial Bus, USB) interface 131 and a high-definition multimedia interface (High Definition Multimedia Interface, HDMI) 132.
- Universal Serial Bus Universal Serial Bus
- HDMI High Definition Multimedia Interface
- the multifunctional electronic device in these embodiments can expand the USB device connected to the external host 200 to transmit data by setting several USB interfaces 131, such as two or more, such as U disk, keyboard, mouse, hard disk, etc., in line with the USB specification device of.
- USB interface 131 is an interface of 3.0 or below, it can meet the requirements of serial advanced technology attachment (Serial Advanced Technology Attachment, SATA)/solid state drive (Solid State Disk or Solid State Drive, SSD) interface hard disk and other high-speed data transmission needs, the maximum support rate is 5Gbps.
- the working principle of this implementation transmits the signal to the multi-port transponder 15 through the D- and D+ pins of the USB interface 131, and the multi-port transponder 15 then transmits the signal to the external host 200.
- the external host 200 can be a computer or a mobile phone, and the external host 200 Detect the received USB device information and determine the type of the USB device. Then communicate with the signal type required by the external host 200 for data information transmission and exchange. There is also the SSTX-, SSTX+ pins of the USB interface 131 to send and receive signals. If the multi-port transponder 15 detects that it can both send and receive, it is determined that the back end is connected to a USB3.0 device. Then, high-speed data transmission and reception are performed to the external host 200 through the bridging function of the multi-port forwarder 15 .
- the main interface 12 adopts a Type-C interface, and is connected with a computer or a mobile phone through the Type-C interface, and can transmit audio and video data at the same time, and can also use the external host 200 to supply power to the multifunctional electronic device.
- the external host 200 is not enough to supply power to the multifunctional electronic device through the main interface 12, or when the external host 200 also needs the power supply of the multifunctional electronic device, please refer to FIG. 2 , A power interface 19 can also be set to supply power to the external host 200 through the main interface 12.
- the power interface 19 is also a Type-C interface, and even further adopts a Type-C pulse duration (Pulse Duration, PD) interface, which can be connected to PD
- the power supply for example, can supply power to the multifunctional electronic device, and can supply power to the computer through the multifunctional electronic device.
- the Type-C interface of the external host 200 When the Type-C interface of the external host 200 is occupied for a long time, it can still charge the computer to ensure that the computer can work for a long time.
- the main interface 12 adopts a Type-C interface
- the Type-C interface is provided with a Type-C protocol chip and a PD3.0 controller, such as a VL103R chip, and the VL103R chip contains a Type-C VBUS-managed power supply
- the management unit can detect that when there is no PD power input, the power supply is provided by the Type-C external host 200. When it detects that a PD power is plugged in, it switches to the PD power supply mode and transmits the PD power to the Type-C external host 200, so that the power supply mode can be quickly switched.
- the Type-C interface external host 200 When the Type-C interface external host 200 is used to provide power (no PD power supply), the power provided by the Type-C external host 200 transmits power to the integrated power switch converter chip (such as IM2605 chip) through VBUS, and is converted by the integrated power switch The device chip outputs a stable 5V power supply to provide power to the multifunctional electronic device.
- the integrated power switch converter chip such as IM2605 chip
- the integrated power switch converter chip When using the PD power supply, the integrated power switch converter chip sends a signal to notify the VL103R chip, and the power supply information required by the VL103R chip to communicate with the Type-C external host 200 is sent back to the integrated power switch converter chip, and the integrated power switch converter chip
- the PD power connected outside the chip is transmitted to the integrated power switch converter chip, and the integrated power switch converter chip outputs a stable 5V power supply to power the multifunctional electronic device.
- the integrated power switch converter chip transmits the PD power to the TYPE-C host device (such as a computer or mobile phone) to charge the device.
- the multi-port repeater 15 communicates with the audio processor 16 through a USB 2.0 channel, so as to save resources of the USB interface 131 with a higher transmission speed.
- the multifunctional electronic device further includes a microphone 20 connected to the audio processor 16 for collecting and outputting audio signals to the audio processor 16 .
- the multifunctional electronic device has a sound pickup function, and can be used as a sound pickup and playback device for video conferencing or live broadcast, and can meet diverse needs.
- a switch 21 is connected, and the switch 21 is used to transfer the audio signal of the main interface 12 from the multi-port repeater 15 Switching between transmission to the audio processor 16 and transmission of the audio signal output from the microphone 20 from the audio processor 16 to the multiport repeater 15 .
- the switching switch 21 can save the I/O port resources of the multi-port repeater 15 .
- the switching switch 21 may not be used, and the multi-port transponder 15 transmits and receives audio signals using two different channels for transmission.
- the multiport transponder 15 includes a hub chip VL817
- the audio processor 16 includes an audio processing chip XVF3000
- the digital-to-analog audio converter 17 includes a digital-to-analog audio conversion chip HT5010
- the audio processing chip XVF3000 converts the received audio signal
- the I2S digital audio signal is transmitted to the digital-to-analog audio conversion chip HT5010 through the I2S channel pin
- the audio power amplifier 18 includes an audio power amplifier chip HT6872
- the HDMI interface 132 communicates with the main interface 12 through a video conversion chip.
- the working power of the multifunctional electronic device can be automatically switched by the PD interface or the Type-C interface.
- the purpose of configuring the PD interface is to ensure a normal power supply current for charging and to charge the external host 200 .
- the principle of PD charging is roughly that when the PD adapter is inserted, the PD adapter sends a power supply capability information to the corresponding power demand external host 200, and the external host 200 receives the power supply capability information and sends a power demand information to the PD.
- the adapter, the PD adapter adjusts the voltage and current for power supply.
- the display device will transfer their extended display identification data (Extended Display Identification Data, EDID) information to the video conversion chip (such as RTD2172L chip), and the video conversion chip passes the Type-C interface (main The interface 12) is connected to the external host 200, and upon receiving the EDID signal, it will send the corresponding resolution and audio signal according to the requirements of the display.
- EDID Extended Display Identification Data
- the process identifier (PID) information of the device is connected to the external host 200 through the multi-port transponder 15 for identification, and a data signal is released to the multi-port transponder 15 for bridging.
- PID process identifier
- Microphone 20 input principle When the external host 200 selects the microphone 20 input, the microphone 20 collects signals and transmits them to the audio processor 16, and the audio processor 16 compiles and processes the received signals and transmits them to the multi-port transponder 15, and then through the multi-port transponder 15 upload to the external host 200.
- the multifunctional electronic device provided by the embodiment of the present application has functions of sound playback, volume adjustment, docking station, microphone radio, video transfer, microphone radio and video transfer control, with diversified functions, multiple applicable scenarios, and strong expandability.
Abstract
本申请公开一种多功能电子设备，包括壳体和固定在壳体上的扬声器（11），壳体内设置有电路板，多功能电子设备设有用于连接外部主机（200）的主接口（12）以及若干扩展接口（13），电路板上设置有依次连接的多端口转发器（15）、音频处理器（16）、数模音频转换器（17）和与扬声器（11）连接的音频功率放大器（18），扩展接口（13）与主接口（12）或多端口转发器（15）连接，壳体上还设有与音频处理器（16）连接的第一按键（14），第一按键（14）用于控制所述扬声器（11）播放音频的音量。本申请实施例提供的多功能电子设备具有声音播放、集线器和视频转接功能。
Description
本申请涉及电子技术领域，具体涉及一种多功能电子设备。
随着信息技术的迅速发展，在新型冠状病毒肺炎（Corona Virus Disease 2019，COVID-19）疫情大流行期间，许多企业将会议安排在了线上举行，远程会议的普及给我们带来更安全、更高效的工作体验。而目前的视频会议投屏只能通过电脑的视频音频输出端口连接到外部显示设备。目前市场上的苹果电脑与支持TYPE-C的电脑越来越多，机身轻薄方便携带，电脑越来越薄，外接接口功能简化，无法满足多样化的输出需求。
市面上绝大部分会议设备存在可移动性差、功能单一、操作不便等问题。
本申请实施例的目的之一在于：提供一种多功能电子设备。
本申请实施例采用的技术方案是：
第一方面，提供了一种多功能电子设备，包括壳体和固定在所述壳体上的扬声器，所述壳体内设置有电路板，所述多功能电子设备设有用于连接外部主机的主接口以及与所述主接口连接的若干扩展接口，所述电路板上设置有依次连接的多端口转发器、音频处理器、数模音频转换器和与所述扬声器连接的音频功率放大器，所述扩展接口与所述主接口或所述多端口转发器连接，所述壳体上还设有与所述音频处理器连接的第一按键、与所述多端口转发器连接的第二按键以及设于电路板上的控制器，所述第一按键用于控制所述扬声器播放音频的音量；所述第二按键用于接听和挂断控制，或用于开始和暂停控制；所述控制器与所述第一按键、所述第二按键连接，用于识别所述第一按键、所述第二按键的按键操作输出相应的控制信号到所述音频处理器或所述多端口转发器。
在一个实施例中，还包括电源接口，所述电源接口与所述主接口连接。
在一个实施例中，所述主接口为type-C接口，所述电源接口为TYPE-C PD。
在一个实施例中，所述扩展接口包括若干USB接口和HDMI接口，所述USB接口与所述多端口转发器连接，所述HDMI接口与所述主接口连接。
在一个实施例中，所述多端口转发器包括集线器芯片VL817。
在一个实施例中，所述音频处理器包括音频处理芯片XVF3000。
在一个实施例中，所述数模音频转换器包括数模音频转换芯片HT5010。
在一个实施例中，所述音频功率放大器包括音频功率放大芯片HT6872。
在一个实施例中，HDMI接口通过一视频转换芯片与所述主接口通讯连接。
在一个实施例中，所述多功能电子设备为音箱、显示屏或扩展坞。
本申请实施例提供的多功能电子设备具有声音播放、音量调节和扩展坞功能。
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或示范性技术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的前提下，还可以根据这些附图获得其它的附图。
图1是本申请实施例一提供的多功能电子设备的模块框图；
图2是本申请实施例二提供的多功能电子设备的模块框图；
图3是本申请实施例三提供的多功能电子设备的模块框图。
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本申请。
需说明的是，当部件被称为“固定于”或“设置于”另一个部件，它可以直接在另一个部件上或者间接在该另一个部件上。当一个部件被称为是“连接于”另一个部件，它可以是直接或者间接连接至该另一个部件上。术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。术语“第一”、“第二”仅用于便于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明技术特征的数量。“多个”的含义是两个或两个以上，除非另有明确具体的限定。
为了说明本申请所提供的技术方案，以下结合具体附图及实施例进行详细说明。
请参阅图1，本申请的一些实施例提供一种多功能电子设备，该多功能电子设备可以为音箱、显示屏或扩展坞。多功能电子设备包括壳体和固定在壳体上的扬声器11，壳体内设置有电路板，多功能电子设备设有用于连接外部主机200的主接口12与主接口12连接的若干扩展接口13，电路板上设置有依次连接的多端口转发器15（HUB）、音频处理器16、数模音频转换器17和与扬声器11连接的音频功率放大器18，扩展接口13与主接口12或多端口转发器15连接，壳体上还设有与音频处理器16连接的第一按键14以及与多端口转发器15连接的第二按键22，第一按键14用于控制扬声器11播放音频的音量；第二按键22用于接听和挂断控制，或用于开始和暂停控制；控制器23与第一按键14、第二按键22连接，用于识别第一按键14、第二按键22的按键操作输出相应的控制信号到音频处理器16或多端口转发器15。该多功能电子设备具有接口转换、扩展功能，在此基础上还集成了播音功能，并且设置了用于调节音量的第一案件，以及可用于接听和挂断控制，或用于开始和暂停控制的第二按键。使得在使用过程中便于用户操作，提高用户体验。而使用在会议通话过程中，利用该多功能电子设备的单一产品则可以组建会议系统，便于操作且功能丰富。
第一按键14是用于控制多功能电子设备音量的，因此，其控制信号是输出到音频处理器16以调节播放音频信号的功率。具体地址，第一按键14根据触发或者按键时间的长短产生的电信号，传输至控制器23（比如单片机），控制器23根据写入的程序，可将第一按键14要达到的功能状态传至音频处理器16调整音量大小，并控制LED灯符合写入逻辑的亮灯状态。
第二按键22用于控制外部主机200的接听和挂断控制（比如通话、直播），或用于开始和暂停控制（比如控制音视频播放）。因此，第二按键22根据按键的状态通过多端口转发器15传输至控制器23（比如单片机），控制器23根据写入的程序，发送控制信号到外部主机200，控制接听/挂断状态或暂停/开始状态。可以理解的是，第一按键14、第二按键22的按键操作可以根据需求对控制器23的设定进行修改。
扩展接口13包括若干通用串行总线（Universal
Serial Bus，USB）接口131以及与主接口12连接的高清多媒体接口（High Definition
Multimedia Interface，HDMI）132。
这些实施例中的多功能电子设备通过设置若干USB接口131，比如两个或两个以上，可以扩展外部主机200连接的USB设备以传输数据，如U盘，键盘，鼠标，硬盘等符合USB规范的设备。例如，USB接口131为3.0或3.0以下的接口，则可满足系列先进技术附件（Serial Advanced Technology Attachment ，SATA）/固态驱动器（Solid State Disk或Solid State
Drive， SSD）接口硬盘等高速传输资料需要，最高支持速率5Gbps。
本实施工作原理通过USB接口131的D-、D+引脚发送信号传输至多端口转发器15，多端口转发器15再将信号传输至外部主机200，外部主机200可以是电脑或者手机，外部主机200检测收到的USB设备信息，判断USB设备的类型。再沟通外部主机200所需的信号类型进行数据信息传输交换。还有通过USB接口131的SSTX-、SSTX+引脚发送信号及接收信号，如多端口转发器15检测到既能发送也能接收的情况下则断定为后端已连接USB3.0的设备。然后通过多端口转发器15的桥接功能到外部主机200进行高速数据传送和接收。
主接口12采用Type-C接口，通过Type-C接口与电脑或手机连接，可以同时传输音视频数据，也可以利用外部主机200给本多功能电子设备供电。另外，如果本多功能电子设备功率较大，外部主机200通过主接口12不足以给本多功能电子设备供电时，或者外部主机200也需要本多功能电子设备供电的时候，请参阅图2，还可以设置一个电源接口19，通过主接口12给外部主机200供电，例如电源接口19也是Type-C接口，甚至进一步采用Type-C脉波持续时间（Pulse Duration，PD）接口，可接入PD电源，例如可给本多功能电子设备供电以及通过多功能电子设备供电与电脑供电，在外部主机200的Type-C接口被长期占用的情况下，仍可给电脑充电，保证电脑能够长期工作。
在一些实施例中，主接口12采用Type-C接口，Type-C接口上设有Type-C协议芯片和PD3.0控制器，比如VL103R芯片，VL103R芯片内部包含Type-C的VBUS管理的电源管理单元，可检测在没有PD电源输入时，由Type-C外部主机200提供电源供应，当检测有PD电源插入时，则切换到PD供电的模式，并将PD供电传至Type-C外部主机200，使供电模式快速切换。
在使用Type-C接口外部主机200提供电源时（无PD供电），Type-C外部主机200提供的电源通过VBUS 将电源传输给集成电源开关转换器芯片（如IM2605芯片），由集成电源开关转换器芯片输出稳定的5V电源给本多功能电子设备提供供电。
在使用PD电源时，集成电源开关转换器芯片发出信号通知VL103R芯片，由VL103R芯片沟通Type-C外部主机200所需的供电信息在回传至集成电源开关转换器芯片，由集成电源开关转换器芯片外部接入的PD电源传输给集成电源开关转换器芯片，由集成电源开关转换器芯片输出稳定的5V电源给本多功能电子设备供电。并由集成电源开关转换器芯片将PD电源传输至TYPE-C主机设备（如电脑或手机），给设备充电。
在一个实施例中，多端口转发器15通过USB 2.0通道与音频处理器16通讯连接，以节省更高传输速度的USB接口131资源。
请参阅图3，在一个实施例中，本多功能电子设备还包括麦克风20，麦克风20与音频处理器16连接，用于收音输出音频信号到音频处理器16。如此，本多功能电子设备具有拾音功能，可以作为视频会议或直播的拾音和播放声音的设备使用，能够满足多样化需求。
请参阅图3，在一个实施例中，音频处理器16与多端口转发器15之间连接有切换开关21，切换开关21用于在将主接口12接入的音频信号从多端口转发器15传输到音频处理器16和将从麦克风20输出的音频信号从音频处理器16传输到多端口转发器15之间切换。如此，使用切换开关21可以节省多端口转发器15的I/O口资源。在其他实施例中，也可以不使用切换开关21，多端口转发器15收发音频信号使用两条不同的通道传输。
在一个实施例中，多端口转发器15包括集线器芯片VL817，音频处理器16包括音频处理芯片XVF3000，数模音频转换器17包括数模音频转换芯片HT5010，音频处理芯片XVF3000将接收的音频信号转化为I²S数字音频信号通过I²S通道脚传输至数模音频转换芯片HT5010，音频功率放大器18包括音频功率放大芯片HT6872，HDMI接口132通过一视频转换芯片与主接口12通讯连接。
本多功能电子设备工作电源可以由PD接口或 Type-C接口自动切换。配置PD接口是为了能保证充电的正常供电电流和给外部主机200充电。PD充电的原理大致是，当插入PD适配器时，PD适配器发送一个电力供应能力信息给到相应的电力需求外部主机200，外部主机200收到电力供应能力信息后，并发送一个电力需求信息给PD适配器，PD适配器调整好电压和电流进行电力供应。
HDMI接口132中只要有接口接入，显示设备会把它们的扩展显示器识别数据（Extended Display Identification Data，EDID）信息转送到视频转换芯片（比如RTD2172L 芯片），视频转换芯片通过Type-C接口（主接口12）连接外部主机200，收到EDID信号就会依显示器要求送相应的分辨率和音频信号过来。
当有设备插入USB接口131时，设备的进程控制符（Process Identifier，PID）信息通过多端口转发器15连接到外部主机200进行识别，并释放数据信号给多端口转发器15进行桥接。
麦克风20输入原理：当外部主机200选择麦克风20输入时，麦克风20采集信号传输至音频处理器16，音频处理器16将接收的信号进行编译处理传输至多端口转发器15，再通过多端口转发器15上传至外部主机200。
扬声器11工作原理：当外部主机200选择扬声器11输出时，外部主机200将音频数字信号传至多端口转发器15，再传至音频处理器16，再传至数模音频转换器17将数字音频信号处理为模拟信号，再传至音频功率放大器18将模拟音频信号放大，传输到扬声器11将声音传播。
本申请实施例提供的多功能电子设备具有声音播放、音量调节、扩展坞、麦克风收音、视频转接、麦克风收音和视频转接控制功能，功能多样化，适用场景多，可拓展性强。
以上仅为本申请的可选实施例而已，并不用于限制本申请。对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。
Claims (10)
- 多功能电子设备，其特征在于，包括壳体和固定在所述壳体上的扬声器，所述壳体内设置有电路板，所述多功能电子设备设有用于连接外部主机的主接口以及与所述主接口连接的若干扩展接口，所述电路板上设置有依次连接的多端口转发器、音频处理器、数模音频转换器和与所述扬声器连接的音频功率放大器，所述扩展接口与所述主接口或所述多端口转发器连接，所述壳体上还设有与所述音频处理器连接的第一按键、与所述多端口转发器连接的第二按键以及设于电路板上的控制器，所述第一按键用于控制所述扬声器播放音频的音量，所述第二按键用于接听和挂断控制，或用于开始和暂停控制；所述控制器与所述第一按键、所述第二按键连接，用于识别所述第一按键、所述第二按键的按键操作输出相应的控制信号到所述音频处理器或所述多端口转发器。
- 根据权利要求1所述的多功能电子设备，其特征在于，还包括电源接口，所述电源接口与所述主接口连接。
- 根据权利要求2所述的多功能电子设备，其特征在于，所述主接口为Type-C接口，所述电源接口为Type-C PD。
- 根据权利要求1所述的多功能电子设备，其特征在于，所述扩展接口包括若干USB接口和HDMI接口，所述USB接口与所述多端口转发器连接，所述HDMI接口与所述主接口连接。
- 根据权利要求1至4任一项所述的多功能电子设备，其特征在于，所述多端口转发器包括集线器芯片VL817。
- 根据权利要求1至4任一项所述的多功能电子设备，其特征在于，所述音频处理器包括音频处理芯片XVF3000。
- 根据权利要求1至4任一项所述的多功能电子设备，其特征在于，所述数模音频转换器包括数模音频转换芯片HT5010。
- 根据权利要求1至4任一项所述的多功能电子设备，其特征在于，所述音频功率放大器包括音频功率放大芯片HT6872。
- 根据权利要求4所述的多功能电子设备，其特征在于，所述HDMI接口通过一视频转换芯片与所述主接口通讯连接。
- 根据权利要求1所述的多功能电子设备，其特征在于，所述多功能电子设备为音箱、显示屏或扩展坞。
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