We encounter HDMI ports on many devices such as TVs, computers, projectors, camcorders, but do users fully understand the features, advantages, and disadvantages of HDMI ports?
Through the HDMI port, users can play images and sound from the computer on the large screen of the TV. This term we have heard a lot but not necessarily two also know about the features and what is the HDMI connection standard?
Standard HDMI connection
HDMI stands for High-Definition Multimedia Interface in English, roughly translated as High-Definition Multimedia Interface. Simply put, this is a connection standard capable of transmitting video and sound through a single cable. Previously, to do this, people had to use 3 image transmission cables and 6 cables for fast sound transmission.
Silicon Image company invented the HDMI standard based on a high-speed serial connection technology called TMDS. HDMI supports all the standard image and sound standards today.
Structure and how it works
The HDMI cable as shown below includes 19 pins that undertake separate tasks. I will maintain the sound quality over the HDMI connection cable when switching to another device, i.e. it will not decrease and will not increase the quality.
You only need to plug one input into a device containing data such as a computer, camcorder .. and one end to an end device such as a TV to transmit images and sound. They design the HDMI standard to support maximum home devices to make connecting and transferring video and audio easier. Today, most computers have this standard. Televisions, players, projectors, camcorders, and more are also equipped with HDMI ports.
What are the advantages of the HDMI connection standard?
The HDMI standard allows for the transmission of images in full HD 1080p resolution at 60 frames per second. It also supports 8 channels of 24-bit, 192 Hz studio-quality sound very well. Silicon Image Company also invented the DVI standard and can stream 1080p video, but it’s not as common as HDMI. Meanwhile, the Component standard reduces the picture and sound from the source to the presentation device so they do not appreciate it. Users should also know that these connection standards are not effective in improving picture and sound quality. The more the video remains, the same as the original, the more appreciated it.
As we mentioned earlier, HDMI cables do not improve picture and sound quality. They rate it for its ability to keep “original” the streamed video. Thus, buying an expensive HDMI cable priced at 300,000 is not much different from a cable priced at 100,000 VND, because the digital information transmitted on them is the same. The recommendation of Van.vn is that users should not spend money on buying expensive HDMI cables.
HDMI cable, like many other cables, will lose transmission quality as the cable length increases. According to Van the HDMI cable should only be up to 20m long, if it is too long, it will not be good. Another note is that if you use a cable longer than 20m, you should not connect the two segments together because it will not have a signal, but must use devices such as HDMI aggregators, HDMI splitters and HDMI Extender.
