HDMI (High Definition Multimedia Interface) cables are highly used for the modern technologies in order to transmit high quality audio and video content in a digital format, without any analogue conversions. They can connect any sources of media, whether you want to combine DVD players, consoles, television sets, boxes or computers. They are practically the digital version of the popular, yet old fashioned analogues cables. In other words, they are supposed to bring in an impressive quality for any kind of content – both video and audio. The image is clear and clean, while the sound is more powerful and detailed.
What is inside a HDMI cable?
HDMI cables look like regular USB cables, but they have nineteen different pins in the end. Each of them has a particular mission. For example, the first nine of them will take the analogue signal in order to be converted into digital packets. The next three pins are used to stimulate the conversion and transmission, not to mention about their regulation. Finally, the other pins have different functions. Some of them are responsible for transmitting power to the cable, while others ensure a flawless and direct communication between the specific devices you are trying to connect.
How does a HDMI cable code the digital packages?
HDMI cables comprise of twisted wires in pairs. They represent the soul of the high quality transmission. Before the transmission begins between two different devices, the cable begins converting the signal. It is also encoded, only to avoid losing some of the quality throughout the transmission. It makes no difference what kind of signals the respective media sources are using. They may be both analogue and digital. The high definition ones will rely on digital signals only. Once the signal is received, the wires transmit it to the other source. The source will get two different signals – the original one and the inverse one. There is obviously a quality difference between them. This difference is easily compensated for by the receiving source.
How long should my cable be?
There is no such thing as a minimal length for a HDMI cable in order to work perfectly. The same rule applies to the maximum length too. With all these, most specialists agree that long cables are not exposed to too many problems in the long run, so they degrade slower. Each manufacturer has some specific limits during the production process. Most of them will not exceed 16 feet. Fortunately, you can order longer cables if you truly need them. For example, it is less likely for a prestigious cinema theatre to combine cables. Instead, they are manufactured per order. Of course, the longer ones require higher quality materials, but they are also more costly. For a general household, 16 feet are usually more than enough.
In conclusion, understanding how a HDMI cable works will help you make a smart and informed decision. Most people know that they may get a better quality, but this is it. They have no idea how it happens or what kind of criteria to think about before investing in a cable.