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为什么智能电视不能直接用通过WiFi连接手机播放视频 而必须要在同一WiFi网络下通过中转来实现?
两台手机可以通过WiFi直接传输文件
为什么智能电视就不可以呢
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康佳电视怎么连接wifi?康佳电视好吗?在众多的电视品牌中康佳是很受欢迎的,所以了解康佳相关知识的人比较多,在众多的问题中小编找了两个询问比较多的问题,特此对康佳电视怎么连接wifi?康佳电视好吗?进行了总结,还是一起学习和了解一下吧,具体内容如下: []
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& 每日答疑：如何将手机电影在电视上播放？
每日答疑：如何将手机电影在电视上播放？
16:13|编辑:琉殇逝景|来源:265G安卓网
USB连接#e#
这些年手机的发展可谓是突飞猛进。智能手机已经勿容置疑地成为这个时代最受欢迎的科技产品，同时由于智能手机的功能更加丰富和强大，用户对于智能手机的需求也逐渐增加。在当前人们对于娱乐生活的选择上，使用智能手机连接电视以实现高清电影似乎已经成为一种时尚，而这种视频传输方法却有很多，今天我们就给大家介绍几种不同的方法。
USB连接方式
对于通过USB连接电视，主要还是依赖于那些支持USB播放的电视来说的，只需要将手机通过USB数据线连接到电视的USB接口上，就可以将手机作为存储装置使用，共享手机内的影视资源，来观看电影。
手机USB连接电视播放画面
其实这种通过USB连接的方法并没有多少技术在里边，不仅仅对于手机，将U盘或者硬盘连接到电视上也同样可以实现播放功能，而且这些都是随着电视机的解码技术来运作的，需要电视机拥有强大的编码方式以及多种支持格式，否则将会因为格式的不支持而出现不识别的情况。
不过通过USB连接电视的方式也有着非常不错的优势，首先是可以热插拔，并不需要重复关机再开机的动作;其次是标准统一，不管是手机、U盘还是硬盘，只要是USB接口都可以与电视相连。
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265G推荐游戏在电视上看手机电影的5种方法（图）_网易新闻
在电视上看手机电影的5种方法（图）（全文）
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新华网7月30日电 据Gizmodo报道，现如今，你的手机和平板电脑不能干的事情已经不多了，而在10英寸以上的屏幕上显示内容恐怕是其中之一，但这是电视可以做的事情。有了以下这五种方法，你就能在大屏幕上欣赏你的手机上的内容了。
对于iOS用户，AirPlay是最合适的方法。苹果公司的这项专利技术允许用户把音频、视频和图片从他们的设备（本文讨论的主要是手机、平板电脑、手提电脑和任何不因电源线而固定在墙上的设备）无线发送到电视上，只需使用家中的Wi-Fi网络。
这项诞生于2004年的技术最早被叫做AirTunes，当时只能在苹果设备之间传输音频。自那以后，这项技术发展到可以支持可视内容和显示器镜像显示（你设备上显示的内容实时显示在电视上），同时也被授权给很多第三方制造商，比如博士（Bose）、Bowers & Wilkins、飞利浦（Philips）和先锋（Pioneer），以便让他们的设备支持AirPlay信号。
有两类Airplay设备：“发送端”基本上是任何运行iOS 4.2以上系统和iTunes的设备（如果要使用镜像功能则还要Mountain Lion及以上的OS X操作系统），它们用来发送信号；另外是“接收端”，也就是任何具有AirPlay功能并能播放被传输信号的设备，包括AirPort Express、Apple TV和任何刚才提到的第三方设备。“发送端”还可以用来远程控制播放，但需要安装Remote应用。
把iOS设备和Apple TV连接在一起还是很简单的：
把两个设备都连接到家庭网络；
双击Home键调出最近使用的应用程序列表；
从左到右双指滑动屏幕，调出AirPlay菜单，选择合适的设备（比如Apple TV）；
按下播放键。
去苹果网站的AirPlay支持页面查找详细信息，了解使用各种播放功能需要哪一代产品。
对于使用iOS生态系统的用户来说这是非常理想的解决方案，但是它不能和任何其他系统兼容，在iOS内部甚至都有软件不支持（比如，你需要使用Airfoil等第三方应用来把Spotify的内容从你的桌面上传送到AirPlay设备上）。
Chromecast
对于不使用iOS设备或者没有Apple TV的用户，谷歌新推出的Chromecast是个不错的选择。这个跨平台的设备通过HDMI接口连接你的电视，获取任何你在移动设备上观看的内容，并在电视上播放。你还可以把在Chrome浏览器上的内容投射到电视上。
Chromecast跟AirPlay的工作模式类似，但可能是使用基于Miracast标准，而不是有版权的代码。这个系统也不需要单独的遥控程序，因为你可以在任何流输出设备上控制播放。和AirPlay类似的是，Chromecast最高支持1080p视频流。
Chromecast使用方法：
把设备插入HDMI接口，把电源线插入电视上的USB接口（如果有的话）或者标配的电源适配器；
下载Chromecast应用（iOS、Android和Windows 8版本），按照屏幕提示操作；
设备会自动检测你的家庭网络，你所要做的是输入网络密码，确认两个设备捆绑在一起；
打开你想通过流来观看的程序，谷歌视频、YouTube和Netflix等现在已经可以使用，Pandora的支持还需要一些时间，你也可以从Chrome浏览器上播放；
加载你想播放的视频或音频，点击屏幕上的Chromecast图标。对话框会问你把媒体同步到哪个电视上去
为了使用这个设备，你需要一台运行以下系统的移动设备：Android 2.3以上、iOS 6以上、Windows 7或8、Mac OS 10.7以上或Chrome OS。
Chromecast设备目前功能比较有限，而且需要强大的Wi-Fi网络才能使用。不过考虑到35美元的价格，这些缺点基本可以忽略。
DLNA是在网络上分享媒体使用非常广泛的标准。Chromecast和AirPlay只能传输视音频信号，但DLNA能传输音频、视频和数据，可以使用Wi-Fi或以太网。所以你不但能把图片和音乐从你的手机推送到电视或音响上，你还可以从笔记本电脑上把文件发送到网络打印机上。
这个系统基于UPnP架构，它能确定是什么设备——是发送媒体的服务器，还是展示媒体的接收器，又或是控制播放的控制器——DLNA能确定这些设备使用的文件类型和播放选项。
DLNA需要两个组件才能工作：服务器和客户端。客户端可以是任何具备DLNA功能的设备，现在此类市售设备大概有1.8万种，有音响、蓝光播放器、电视机、冰箱和数码相框等等，不一而足。但DLNA服务器要少得多。运行Media Player 11的Windows 7设备就可以当做DLNA服务器。苹果设备没有DLNA功能，因为它们有AirPlay功能。AirPlay功能大体类似，但是仅限于苹果生态系统内部。
移动高清连接技术（MHL）就是不带无线连接的AirPlay和Chromecast系统。这个标准通过物理线缆把视音频信号从移动设备发送到HDTV或音频接收器上——一般使用microSD-HDMI连接器。MHL也支持1080p视频和最多8声道（7.1环绕）音频。
市面上有一些具有MHL功能的设备，视音频接收器、电视机、分量视频播放器（component players）。罗库流媒体棒（Roku Streaming stick）是很流行的MHL设备。对于不支持MHL的老旧设备，你还可以使用MHL-HDMI转接器。Chromecast需要使用单独的USB链接来供电，但是MHL通过电缆使用电视机来供电。此外，MHL标准还允许用户使用遥控器来控制连接在电视上的设备。
Miracast是媒体共享的新工具，是Wi-Fi联盟在2010年以开源形式开发的屏幕投射标准，作为AirPlay的替代品。Galaxy SIII和LG Optimus G是比较典型的使用Miracast的设备。
Miracast虽然是一种P2P协议，但是它不需要中央路由器或接入点来工作。相反，它可以使用Wi-Fi直连（这本身就是Wi-Fi联盟成员Intel早期研发的结果，当时叫做Wi-Di，或“无线显示”）来创建ad hoc网络，这和蓝牙类似。就像我们刚才解释的，Miracast“实质上就是无线HDMI线缆，使用H.264编码和自己的DRM层把一个屏幕的内容复制到另一个屏幕上，同时模拟HDMI系统。”
Miracast允许用户在两个设备之间投射1080p视频和6声道（5.1声道）音频，而不需考虑品牌，也不需要线缆。但两种设备都需要使用认证的Miracast功能，但就像DLNA技术那样，Miracast还为老旧设备准备了适配器。
苹果已经有了AirPlay，Miracast目前主要存在于Androis 4.0以上系统上，不过在以后可能也会成为Windows 8.1和Blackberry 10.2的内置功能。
译者：林杉
百度新闻与新华网国际频道合作稿件，转载请注明出处。
There's not much your phone or tablet can't do these days, beyond maybe displaying their troves of mobile content on a screen larger than 10 inches. But that's what televisions are for. And, with one of these five methods, you'll be able to seamlessly throw music and movies from your little screen to your big screen.
For iOS users, AirPlay is the way to go. This proprietary firmware suite created by Apple allows users to to wirelessly stream audio, video, and image data from their device (for the purpose of this article, assume we're talking about phones, tablets, phablets, laptops, and anything else not tethered to the wall with a power cord) to the television using your home Wi-Fi network.
Originally dubbed AirTunes back in 2004 when it only streamed audio among Apple-built devices, the protocol has since evolved to support visual data (read: videos) as well as display mirroring capabilities (what shows up on your device shows up on the TV in real time), and has been licensed to a large number of third-party manufacturers like Bose, Bowers & Wilkins, Philips, and Pioneer so that their gadgets can receive AirPlay signals.
See, there are two types of Airplay devices: Senders, basically any iOS 4.2-plus device running iTunes (and Mountain Lion or later for display mirroring), which transmit the content, and Receivers, any AirPlay-enabled device that actually plays the transmitted signal—be it an AirPort Express, Apple TV, or any of the third-party devices mentioned earlier. The sending unit can also be used to remotely control the playback but requires you to boot up the separate Remote app.
Connecting your iOS device to your Apple TV is relatively simple:
Connect both to your home network
Double tap the home key to pull up Recently Used Apps
Double swipe, left to right, to pull up the AirPlay menu and select the proper receiving device (say, your Apple TV)
Press play
Check out Apple's AirPlay support page for complete details on which generation of devices are required for the system's various playback schemes.
The bottom line: It's an ideal solution if you've got an iOS-centric ecosystem, but it's not compatible with any other platform, and not compatible with all apps even within iOS (you need a third-party application like Airfoil to get Spotify from your desktop to your AirPlay device, for instance).
Chromecast
For folks that don't use iOS or don't own an Apple TV, Google's brand new Chromecast system is a solid option. This platform-agnostic dongle connects to your TV through an HDMI plug, and pulls down whatever you're watching on your device from the cloud, playing it on your TV. You can also mirror what's in your Chrome browser directly.
It's similarish to how AirPlay works, but likely relies on the Miracast standard rather than a proprietary code stack. It also doesn't require a separate remote app as you control the playback using whatever streaming service is delivering the content. Like AirPlay, Chromecast supports up to 1080p streaming video.
To use the Chromecast:
Plug it into an HDMI port, plug the power cable either into a spare USB port on your TV (if it has one) or otherwise into a power outlet using the included adapter.
Download the Chromecast app (iOS, Android, and Windows 8), and follow the onscreen instructions.
The dongle will automatically detect your home network, all you have to do is input your network key and confirm that the two devices are tethered.
Open up the streaming app you want to watch—Google Video, YouTube, and Netflix are available at the moment. Pandora's coming soon, or you can play content from within your Chrome browser.
Load the video or track you want and tap the onscreen Chromecast icon. A dialog box will pop up and ask which TV you want it sent to.
To use this device, you'll need a mobile running Android 2.3-plus, iOS 6-plus, Windows 7 or 8, Mac OS 10.7-plus, or Chrome OS.
Chromecast currently is burdened with a relatively limited feature set, and requires a hearty Wi-Fi network to be effective. Those concerns are more than balanced out by the extremely reasonable $35 price.
DLNA is a broad standard for sharing media over a network. Unlike Chromecast and AirPlay which only do A/V feeds, DLNA can push audio, visual, and data around easily using a Wi-Fi or Ethernet connection. So not only can you push pictures and music from your phone to your TV or stereo, you can also send a file from your laptop to your home's network printer without plugging in.
This system is built on the Universal Plug and Play (UPnP) architecture. UPnP determines what kind of device it is—either a server, where the
renderer, where th or controller, which dictates playback—and DLNA specifies the file types and playback options that those devices can utilize.
To work, the DLNA system needs two components: a server and a client. The client can be any DLNA enabled device. There are over 18,000 such DLNA-certified gadgets on the market today—everything from stereos, Blu-ray players and TVs like LG's flagship 8600 series to refrigerators and digital picture frames. DLNA servers, on the other hand, are slightly less ubiquitous. Windows 7 devices running Media Player 11, for example, can natively act as a DLNA server. Apple products, however, lack all DLNA capabilities on account of the company's AirPlay system, which does largely the same thing but locks customers into the Apple ecosystem.
Mobile High-Definition Link (MHL) is what AirPlay and Chromecast would be without the wireless connectivity. This standard pushes AV data from a mobile device to an HDTV or audio receiver using a physical cable—typically with microSD to HDMI connectors. Like its wireless brethren, MHL supports up to 1080p video as well as eight-channel (7.1 surround) audio.
There are a number of MHL-enabled devices—AV receivers, TVs, component players, and whathaveyou—on the market. The Roku Streaming stick is a popular MHL device. And for legacy products that don't support MHL, you can also use an MHL-HDMI adapter. Unlike the Chromecast, which needs a separate USB connection to draw power, devices using MHL are powered from the TV through the one cord. What's more, the MHL standard allows users to control the attached device using the TV's existing remote
Miracast is a relatively new player to the media sharing game. It was developed in 2010 as an open source, wireless screencast standard alternative to AirPlay created by the Wi-Fi Alliance. The Galaxy SIII and LG Optimus G are two examples of the many Miracast devices on the market.
Being P2P, Miracast doesn't necessarily require a central router or access point in order to work. Instead, it can use a Wi-Fi Direct connection (itself the product of an earlier attempt by Wi-Fi Alliance member Intel at screen sharing called Wi-Di, or Wireless Display) to create an ad hoc network similar to what Bluetooth does. As we've explained before, Miracast is "effectively a wireless HDMI cable, copying everything from one screen to another using the H.264 codec and its own digital rights management(DRM) layer emulating the HDMI system."
Miracast allows users to mirror up to 1080p video and 6-channel (5.1 surround) audio between any two devices, regardless of brand, no wires required. Both devices do have to be Miracast certified, however, but just as with DLNA, there are adapters available for legacy gadgets.
Since Apple already has AirPlay, Miracast is found primarily on Android platforms 4.0-plus and is expected to be a native ability of both Windows 8.1 and Blackberry 10.2 when they drop later this year.
[Wikipedia 1, 2, 3, 4 - Which - Google Play - Apple - Top Image: Sam Spratt]
(原标题：在电视上看手机电影的5种方法（图）)
本文来源：新华网
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