HDMI 2.0 Technology
All the new specifications of HDMI 2.0 have been issued at the end of 2013, which have replaced the old HDMI 1.4 one. Already the version says a lot regarding the technical leap that has been made, because if up to nowadays the new releases were always 1.X, release 2.X is passed for the first time, probably to make a clean break with the past and to start a new digital era.
Let's see specifically the introduced novelties, both from the technical point of view as well as from the functional point of view.
From the technical point of view we can note immediately that although the performances have been significantly improved, nothing has been changed in the HDMI 2.0 connections, compared to the previous ones. Therefore the new cables are perfectly compatible with the previous versions and practically you can use cables of the last generation to connect peripherals of the previous generation.
Another important thing to note is that the minimum required technical specifications are remarkably increased therefore it is essential to have excellent made HDMI2.0 cables to support those performances fully. Ricable is in this sense always a step ahead because consulting the technical cards of our HDMI 2.0 cables, you'll note immediately that the technical specifications have often considerably been better than the imposed ones by the HDMI body, above all regarding the Bandwidth, i.e. the data amount the cable can transit in Gbit per second.
Why is it important to have a cable with a greater bandwidth than the one required by HDMI 2.0?
...simple, because we'll have a signal that "flows" more smoothly. In order to understand this better, we'll make a simple example. Let's suppose to have a road which is travelled by 100 cars per minute. If this road is a single lane, the travelling speed of the traffic will be strongly influenced by slower cars. If the same road is 2-laned instead, the traffic will be much smoother. If there are 3-lanes even more and so on.
Practically, translating this example in HDMI cables, increasing the bandwidth corresponds to increasing the number of lanes of the road and consequently having a much more constant data flow, without any type of interruption and that's the reason that Ricable designs cables with technical specifications that are higher than the required ones by the HDMI 2.0 specifications.
This situation of Upgrade of features was necessary because with HDMI 2.0 some important functionalities have been introduced, which need to run a greater amount of data than before and therefore it was necessary to "increase the lanes" in order to allow this amount of data to be transmitted from the source to the output without any interruptions and with a perfect performance.
Now let's see specifically the purely technical features that have been changed.
Bandwidth: The bandwidth in the HDMI 2.0 version is almost doubled, passing from 10,2 Gbps to 18 Gbps.
Clock Rate: Consequently even the Clock Rate is almost doubled, passing from 340 Mhz to the current 600 Mhz. of the HDMI 2.0 version.
Video resolution: 4K that was already supported in the HDMI 1.4 version made a leap forward obtaining the full support of the 4096x2160p 50/60 Hz resolution. This technical feature is commercially called 4K Ultra HD.
The ability to manage a greater data flow gave the possibility to introduce unprecedented Audio and Video functionality in the Home Entertainment world. Perhaps it went opposite, namely the necessity to introduce new functionalities made the technical upgrade necessary. Whatever the case, the result is the one we are going to see below.
Number of Audio channels: The multi-channel listening passed from 8 channels to 32 channels, this means the possibility to listen to 32 different sound sources, bringing the Home Cinema experience to new heights and technically similar to those ones of the cinemas. A listening at 32 channels allows a sonic reproduction almost identical to reality, creating a stunning scenic effect.
1536 Khz support: With a greater bandwidth at disposal of the signal it has been possible to improve even further the Audio Losless of the previous HDMI, obtaining an unprecedented audio sampling of 1536 Khz.
Multi Stream Audio/Video: From now on it is possible to have simultaneously access to the Multi Stream contents up to four users at the same time.
CEC Extension: With the extension of the CEF functionality, it will be increasingly possible to use remote controls of a singular device to manage both units. For example it will often be possible to check the blue-ray reader with the TV remote control, even for appliances of different trademark.
21:9 Ratio Aspect: The 21:9 wide-angle film lens is now supported in a native way for an unprecedented scenic panorama.
4K Ultra HD: As we noted above, nowadays 4K Ultra HD is supported, which differs from 4K supported by the previous HDMI versions, since this resolution can be managed up to 60 fps, thus with such a speed of the frames that it excludes completely the possibility to perceive a release reproduction.
3D 4K: The stereoscopic support arrives up to 4K resolution with HDMI.
There are also other features of minor importance that have been implemented, such as the dynamic synchronisation of the AV streams, but in principle these views are the main features of the new format.
Mainly two considerations have been deduced from this closer examination:
1. Nothing has been changed from the technical point of view, only more "space" has been given to the Audio/Video signals, always more impressive, to move between the source and the output.
2. In the HDMI connection field, which is the one we are concerned about, the bar of quality has risen greatly because in order to obtain high performances it is necessary to use advanced technologies even in the production of cables that can support the new AV processes.
It is important to remember that with the introduction of the new HDMI 2.0 specifications all the features of the previous versions have to be considered such as 3D, l’ARC and Ethernet Channel.