With the advancement of the times, technology is also developing at a high speed all the time, especially in the field of mobile phones. Smartphones have undoubtedly become the most popular technology products of this era. At the same time, because the functions of smart phones are more abundant and powerful, users are The demand for smartphones is also increasing. In the current choice of entertainment life, using a smart phone to connect to a TV to achieve high-definition movies seems to have become a fashion, and there are many such video transmission methods. Today we will introduce you to several different methods.
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USB connection method
For connecting to TV via USB, it mainly relies on those TVs that support USB playback. Just connect the mobile phone to the USB interface of the TV through the USB cable, and then use the mobile phone as a storage device to share the video in the mobile phone. Resources, to watch movies.
Mobile phone USB connection TV playback screen
In fact, this method of connecting via USB does not have much technology in it. Not only for mobile phones, but also the U disk or hard disk connected to the TV can also achieve the playback function, and these are all operated with the decoding technology of the TV. The TV needs to have a strong encoding method and a variety of support formats, otherwise it will be unrecognized because the format is not supported.
However, the way to connect to the TV via USB also has a very good advantage. The first is that it can be hot swapped, and does not need to be repeatedly turned off and then turned on. Secondly, the standard is unified, whether it is a mobile phone, a USB flash drive or a hard disk, as long as it is a USB interface. Can be connected to a TV.
Advantage:
Standard uniform, plug and play
insufficient:
Dependent on the coding ability of television
HDMI connection method
HDMI connection method
HDMI, also known as high-definition multimedia interface, is a dedicated digital interface suitable for image transmission. It can transmit audio and video signals at the same time. The maximum data transmission speed is 5Gbps, which can not only meet the resolution of 1080P, but also support digital audio such as DVD Audio. format.
Mobile phone with HDMI interface
HDMI is also a video playback technology that has been developed for many years. Nowadays, on smartphones, products that support HDMI interface are not uncommon. Just connect the mobile phone with HDMI interface to the TV through HDMI cable, and the TV screen can be immediately Sync and display the content on your phone.
Mobile phone connected to TV via HDMI
The connection method also supports plug and play, and the mobile phone connects to the TV through HDMI. In addition to the output of high-definition video, another advantage is that the operation end is moved back to the smart phone, and the operation on the mobile phone is realized on the television. The output content.
Advantage:
Support HD video output, operate with mobile phone
insufficient:
Does not support charging the phone, the phone needs to support HDMI interface
MHL connection method
MHL connection method
MHL is a relatively new technology and interface in the past two years. It is also called the high-definition video and audio standard interface of mobile terminals. It is a video and audio standard interface for connecting portable consumer electronic devices. It only needs to connect the MHL-enabled smart phone to the TV MHL interface. When the TV is powered on, the entire connection process is completed.
The phone can be charged when the phone is connected to the TV via MHL
And like HDMI, MHL not only allows the mobile phone to synchronize with the TV screen, but also supports the output of audio signals. It can directly experience the fun brought by 1080P HD movies, and does not need to go through any settings, which can be said to be very convenient.
In addition, MHL also has the advantage that, because the mobile phone is connected to the TV to play video, it is always in the process of discharging, and it is easy to lose power when playing games or watching movies for a long time. If you use HDMI connection, the mobile phone can't charge, and MHL is different. You only need to connect with the TV. You can also charge the mobile phone while playing the video. You don't need to worry about the battery of the mobile phone.
Currently there are fewer devices supporting MHL
However, MHL is not a perfect technology and interface. Due to the short launch time, MHL currently faces the problem of supporting fewer devices. There are only a few models of mobile phones and TVs equipped with MHL interfaces, especially on mobile phones. More than 20 mid- to high-end models support MHL, and the popularity of MHL will take time compared to supporting HDMI interfaces.
Advantage:
Support mobile phone to charge, support high-definition video output, use mobile phone to operate
insufficient:
Less support equipment
DLNA connection method
DLNA connection method
When it comes to DLNA, many of my friends may feel unfamiliar. In fact, DLNA is a technology that has been around for a long time. It was founded by Sony, Intel, Microsoft, etc., and is designed to solve wireless problems such as personal PCs, consumer electronics, and mobile devices. Interconnection of network and wired networks. To put it simply, it is a function similar to PC network neighborhoods between various DLNA-enabled devices, allowing one device to directly access and play back image, sound or video resources in other DLNA devices on the network.
DLNA is similar to the function of PC network neighborhood
In the video transmission of mobile phones and TVs, there is no need for data lines. Only two devices need to be connected to the same network, and the DLNA function is turned on (the names between different devices are different), so that they can browse each other in the storage. Music, videos, pictures, and more.
Devices that support DLNA are currently more common
Currently, DLNA-enabled devices on the market can be said to be everywhere. TVs, smart phones, digital cameras, Blu-ray players, PS3 game consoles, etc. are commonly used. Desktop PCs and laptops can also implement DLNA functions through some common software. In the compatible format, DLNA has better compatibility with graphics and audio after many upgrades, and the compatibility with video is more general. It is commonly used for domestic HD films such as H.264 and VC-1. The video encoding format is not supported and only supports some basic video formats.
Advantage:
No need to connect through data lines, bidirectional operation between devices
insufficient:
Need to connect to the network, support for high-definition video formats
Multi-screen interactive
Multi-screen interactive
For smart TVs that have just entered the smart field, it also needs to have a rich functional experience. Multi-screen interaction is a delightful feature on smart TVs. It is based on DLNA protocol or IGRS protocol, connected via WIFI network, in different multimedia terminals. On the other hand, multimedia (audio, video, picture) content transmission, analysis, display, control and other operations.
Multi-screen interaction can be said to be the future development trend
Multi-screen interactive experience with mobile phones and TV
In the connection between the smart phone and the TV, first install a multi-screen interactive APP application that matches the smart TV in the smart phone, and then ensure that the TV and the mobile phone are all in the same local area network, and click on the mobile phone to install the multi-screen. The interactive software can connect the mobile phone to the TV. At this time, only the finger slides, the content on the mobile phone can be output to the TV for viewing, and the content on the TV can also be input to the mobile phone for sharing.
Advantage:
No data line connection, large screen and small screen bidirectional operation
insufficient:
Need to connect to the network, the versatility between brands needs to be improved
to sum up:
For the current smart products, the mutual transmission of content between devices seems to have become more and more simple, and the interaction between smart phones and other playback products is also very frequent, and in various solutions for connecting mobile phones and TVs, HDMI can It is said that it is the most mainstream and most advantageous transmission method, and multi-screen interaction is the most anticipated function in the future. I believe that with the development of technology, people's entertainment life will become more and more exciting in the future.
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