Miracast是一种无线技术，您的Windows 10设备可以使用它来将其屏幕投射到支持该技术的电视、投影仪、显示器和流媒体播放器上。(TVs)但是，如果您的电视或显示器(TV or monitor)不提供Miracast，您可以购买类似Microsoft 无线显示适配器的(Microsoft Wireless Display Adapter)Miracast 加密狗(Miracast dongle)，并使用它以无线方式投射到任何带有HDMI 端口(HDMI port)的显示器。以下是使用Miracast 技术(Miracast technology)从支持Miracast的(Miracast)Windows 10计算机或设备(computer or device)无线投影到任何显示器的方法：
无线投影(wireless projection)需要什么？
在继续学习本教程之前，请仔细检查您是否有以下可用项目：
- 具有内置Miracast 支持(Miracast support)的电视或显示器(TV or monitor)或...
- 像Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)这样的 Miracast 加密狗。加密狗需要插入带有HDMI 端口(HDMI port)和有源USB 端口的(USB port)电视或显示器(TV or monitor)。TV/monitor计算机或设备(computer or device)的距离不应超过 7 米或 23 英尺。如果显示器没有供电的USB 端口(USB port)，您可以使用USB 智能手机充电器并将(USB smartphone charger and plug)您的Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)插入其中，以便获得所需的电源。
- 具有Windows 10(Windows 10)的Miracast设备，例如Surface Pro 3、Surface Pro 4或Surface Book。如果您的计算机安装了Windows 10，它应该默认支持Miracast。如果您已将旧 PC 升级到Windows 10，它可能支持也可能不支持Miracast。您必须检查其官方硬件(official hardware)规格以确保它支持Miracast 技术(Miracast technology)。
如果您拥有此列表中的所有内容，请继续执行以下步骤：
第 1 步(Step 1)：设置您要连接的电视或显示器
如果您有支持 Miracast(Miracast support)的电视或显示器，则需要确保它已打开并且Miracast 无线(Miracast wireless)连接未关闭。如果您正在使用的Miracast 显示器(Miracast display)已打开并正常工作，请转到本指南中的步骤 2。
如果您使用的是Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)之类的Miracast 加密狗(Miracast dongle)，则需要一台带有HDMI 端口(HDMI port)和USB 端口(USB port)的电视或显示器。USB 端口(USB port)必须从显示器接收电源，否则Miracast适配器(Miracast adapter)将无法工作。将Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)插入要投影的显示器上的HDMI 和 USB 端口。(HDMI and USB ports)如果电视或显示器上的USB 端口(USB port)未通电或丢失，则您需要Miracast加密狗的(Miracast dongle)电源(power source)。如前所述，您可以使用USB 充电器(USB charger)任何智能手机为加密狗供电，如下图所示。
然后，使用遥控器或显示器的配置菜单(configuration menus)，并将其输入设置为您插入Miracast 适配器的(Miracast adapter)HDMI 端口(HDMI port)。如果一切正常，您将看到如下图所示的图像，上面写着：“MicrosoftDisplayAdapter_EF Ready to connect”。如果您使用的是来自其他制造商的其他Miracast 适配器(Miracast adapter)，则屏幕上的消息会有所不同。
如果您没有在屏幕上看到此消息，则表示USB 端口(USB port)未向适配器供电。
第 2 步(Step 2)：从 Windows 10 设备连接到启用 Miracast 的屏幕
现在您应该转到支持 Miracast 的 Windows 10计算机或设备(computer or device)并连接(Miracast support and connect)到Miracast 显示器(Miracast display)或Miracast 适配器(Miracast adapter)，以便您可以使用它进行无线投影。
在Windows 10中，通过 Miracast 发起连接有两种方式：
第一种是单击或点击Windows 10任务栏上的通知(Notifications)图标，以调出操作中心(Action Center)。在具有触控功能的设备上，您还可以从屏幕右侧轻拂，调出操作中心(Action Center)。在操作中心(Action Center)，单击或点击项目(Project)。
项目侧窗格(project side pane)随即打开。在那里，单击或点击(click or tap) “连接到无线显示器”("Connect to a wireless display ")。
Windows 10 开始搜索无线显示(wireless display)和音频设备。一旦它检测到您的Miracast 显示器(Miracast display)或 Miracast 适配器，请单击或点击(click or tap)它。如果您使用的是Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)，它应该会检测到名为MicrosoftDisplayAdapter_EF的设备。单击(Click)或点击它并等待Windows 10连接到它。
连接到启用 Miracast 的显示器的第二种方法是打开设置应用程序(Settings app)。在那里，转到System然后到Display。在“自定义您的显示器”(Customize your display ")部分，有一个链接显示：“连接到无线显示器”("Connect to a wireless display ")。单击(Click)或点击它，它会显示 Windows 10 检测到的Miracast设备列表。
单击(Click)要连接的启用 Miracast 的设备，即可完成。
第 3 步(Step 3)：无线投影到您要使用的电视或显示器
您可以随时更改投影到启用 Miracast 的显示器的方式。连接到它后，您可以立即单击或点击“更改投影模式”("Change projection mode ")。
这将打开“项目”(Project)窗格，您可以在其中设置如何将图像投影到启用 Miracast 的显示器上。您可以通过按键盘上的Windows + P或按任务栏上的Notifications图标，然后按Project来访问同一窗格。
第 4 步(Step 4)：从支持 Miracast 的显示器断开连接
完成向启用 Miracast 的显示器的投影后，应断开与它的连接。有几种方法可以做到这一点。一种方法是打开设置(Settings)应用程序并单击或点击系统(System)，然后是显示(Display)。在那里，单击或点击(click or tap)显示“连接到无线显示器”("Connect to a wireless display")的链接。这将打开Connect窗格，您应该在其中按Disconnect。
另一种方法是按键盘上的Windows + P或单击或点击任务栏上的Notifications图标，然后单击Project。选择断开连接(Disconnect)，Windows 10将从启用 Miracast 的显示器断开连接。
结论
如您所见，使用支持Miracast 的电视或显示器或(TVs or displays)Microsoft 无线显示适配器(Microsoft Wireless Display Adapter)等Miracast 加密狗在(Miracast support or Miracast dongles)Windows 10中进行无线投影相对容易。完成初始设置后，投影就像使用普通投影仪一样简单。如果您对此程序有任何疑问，请不要犹豫，使用下面的评论表进行分享。
How to project to a TV or monitor from Windows 10, using Miracast
Mіracast is a wireless technology that your Windowѕ 10 deviceѕ can use to рroject their screens to TVs, projectorѕ, displays and streaming media players that supрort thiѕ technology. However, if your TV or monitor doesn't оffer Miracast, you can purchase a Mirаcast dongle lіke the Microsoft Wireless Display Adaptеr and use it to project wirelessly to any display wіth an HDMI port. Here's how to wirelessly project from a Windows 10 computer or dеvice with support for Miracast, to any display, using the Mirаcast technology:
What do you need for the wireless projection?
Before you move forward with this tutorial, double check that you have the following items available:
- A TV or monitor with built-in Miracast support or...
- A miracast dongle like the Microsoft Wireless Display Adapter. The dongle needs to be plugged into a TV or monitor with both an HDMI port and a powered USB port. The TV/monitor should not be more than 7 meters or 23 feet away from your Windows 10 computer or device. If the display doesn't have a powered USB port, you can use a USB smartphone charger and plug in your Microsoft Wireless Display Adapter into it, so that it gets the power it needs.
- A Miracast enabled device with Windows 10 like the Surface Pro 3, Surface Pro 4 or the Surface Book. If your computer came with Windows 10 installed, it should support Miracast by default. If you've upgraded an old PC to Windows 10, it may or may not support Miracast. You must check its official hardware specifications to ensure that it has support for the Miracast technology.
If you have everything on this list, then go ahead and follow these steps:
Step 1: Set up the TV or the display that you want to connect to
If you have a TV or a display with Miracast support, then you need to make sure that it is turned on and that Miracast wireless connections are not turned off. If the Miracast display that you are using is turned on and working, move to step 2 in this guide.
If you are using a Miracast dongle like the Microsoft Wireless Display Adapter , you need a TV or a monitor with an HDMI port and a USB port. The USB port must receive power from the display or the Miracast adapter won't work. Plug the Microsoft Wireless Display Adapter into the HDMI and USB ports on the display where you want to project. If the USB port on the TV or the monitor is not powered or it's missing, then you need a power source for the Miracast dongle. As mentioned earlier, you can use the USB charger of any smartphone to power the dongle, just like in the picture below.
Then, use the remote or the configuration menus of the display and set its input to the HDMI port where you plugged in the Miracast adapter. If everything worked well, you will see an image like the one below, saying: "MicrosoftDisplayAdapter_EF Ready to connect". If you are using another Miracast adapter, from another manufacturer, then, the message on the screen will be different.
If you don't see this message on the screen, it means that the USB port doesn't supply any power to the adapter.
Step 2: Connect to the Miracast-enabled screen from your Windows 10 device
Now you should go to your Windows 10 computer or device with Miracast support and connect to the Miracast display or the Miracast adapter, so that you can use it to project wirelessly.
In Windows 10, there are two ways to initiate the connection through Miracast:
The first is to click or tap the Notifications icon on the Windows 10 taskbar, to bring up the Action Center. On a device with touch, you can also flick from the right side of the screen, to bring up the Action Center. In the Action Center , click or tap Project.
The project side pane opens. There, click or tap "Connect to a wireless display ".
Windows 10 starts searching for wireless display and audio devices. Once it detects your Miracast display or your Miracast adapter, click or tap on it. If you are using a Microsoft Wireless Display Adapter, it should detect a device named MicrosoftDisplayAdapter_EF. Click or tap on it and wait for Windows 10 to connect to it.
A second way to connect to the Miracast-enabled display, is to open the Settings app. There, go to System and then to Display. In the " Customize your display " section there is a link that says: "Connect to a wireless display ". Click or tap on it and it brings up the list of Miracast devices that Windows 10 detects.
Click on the Miracast-enable devices that you want to connect to and you are done.
Step 3: Project wirelessly to the TV or the display that you want to use
You can change the way you project to the Miracast-enabled display at any time. Immediately after you connect to it, you can click or tap "Change projection mode ".
This brings-up the Project pane where you can set how you want to project the image on the Miracast-enabled display. You can get to the same pane by pressing Windows + P on your keyboard or by pressing the Notifications icon on the taskbar and then on Project.
Step 4: Disconnect from the Miracast-enabled display
When you are done projecting to the Miracast-enabled display, you should disconnect from it. There are several ways to do that. One way is to open the Settings app and click or tap System , followed by Display. There, click or tap on the link that says: "Connect to a wireless display". This brings up the Connect pane where you should press Disconnect.
Another way is to press Windows + P on your keyboard or to click or tap the Notifications icon on the taskbar and then on Project. Choose Disconnect and Windows 10 disconnects from the Miracast-enabled display.
Conclusion
As you can see, projecting wirelessly in Windows 10 using TVs or displays with Miracast support or Miracast dongles like the Microsoft Wireless Display Adapter, is relatively easy. Once the initial setup is done, projecting is as easy as with a normal projector. If you have any questions about this procedure, don't hesitate to share them using the comments form below.
