What is the HDMI interface? How to choose an HDMI cable?

In the weak current or ordinary contact with electricity more friends, will often encounter the difficult problems of HDMI this kind of interface, can not understand and can not understand, today take you to look at the 

HDMI interface related knowledge.

HDMI is a digital video/audio interface technology, is suitable for image transmission of a dedicated digital interface, which can simultaneously transmit audio and image signals, the highest data transmission speed 

of 18Gbps, while without the need for digital/analog or analog/digital conversion before signal transmission.

In popular terms, HDMI is a high-definition video interface, which is relatively common in the current mainstream notebooks, LCD TVS, graphics cards, and motherboards.

HDMI is a digital video/audio interface technology, is suitable for image transmission of a dedicated digital interface, it can simultaneously transmit audio and audio signals, the highest data transmission speed of 5Gbps,

can support 1080P, 720P full HD format video output, is the most popular HD interface. This is the ordinary VGA display interface can not be compared, just like broadband telephone line broadband and optical fiber, the

 transmission of data capacity is very different.

HDMI mainly meets the needs of high-definition video above 1080P, such as the motherboard or video card equipped with HDMI interface, indicating that the computer equipped with the motherboard or video card supports

1080P video output, we can support 1080P resolution monitor or LCD TV connected to the computer, play 1080P full high-definition video.

[How to choose HDMI cable] At present, the HDMI cable on the market ranges from ten dollars to several thousand dollars, below I will teach you how to choose the right HDMI cable in detail.

1, first of all, the thickness of the wire, it is recommended to buy moderate thickness, too thin wire basically do not need to consider. Because the wire is too thin, the shielding layer wrapped and the wire core used inside must

be "shrunk", the video and audio signals are disturbed during transmission, and the final picture quality is affected.

2, simple and rough "thick" and "fine" is not the only standard for purchase, the key to product grade is actually not to pay attention to the material. Interface choose gold-plated interface HDMI cable, we can judge by interface color.

At present, high-quality data cable interfaces on the market are processed by gold-plated technology, and HDMI cables are no exception. The gold-plated interface can effectively reduce the phenomenon of signal interference and

signal loss affecting the picture quality, and solve the problem of multiple insertions and poor contact.

The material selected is all copper core HDMI cable, which can be judged by the softness of the wire. If the wire is very hard and difficult to bend, it is basically not a full copper core. All copper core can support long-distance signal 

transmission, and there will be no signal attenuation and other problems. Of course, if you have high requirements for wire and are willing to spend money, you can choose a fully plated silver wire core.