Now in the US, whether it is television, computer or mobile phone, HD has become one of the indispensable components, and high-definition signal transmission between different devices, it cannot do without the support of HDMI.
Several years ago, HDMI still seems to be a too high to be reached the concept, and now, it has come into our life, everyone even more than three five devices supporting HDMI. This interface is like USB, become an indispensable standard.
We know, HDMI as a standard, actually have a version of the division, HDMI equipment and interface now used mostly in accordance with HDMI 1.4b standard, this standard is actually in 2009 has been developed, followed by four years of time.
HDMI 1.4b annotation is mature and has been widely adopted, even leading to provide support for 4K, but the development of world without end technology, people pursuit of high quality audio is the world without end, as a high definition transfer standard, HDMI will need to make forward-looking upgrade. In this context, HDMI 2 at the beginning of the IFA came out, the new standard not only bring about transmission rate leap, but also provides high quality audio output and more features.
So, this four years grinding sword of the HDMI 2 standard, what update? It can bring a new experience for us? Whether it will further bring more excellent HD experience? Everyone was asking these questions, and the new standard will bring the best answer to us.
HDMI 2 terminal has eight highlights innovation propelled the development of Ultra HD industries
One bright spot: the transmission bandwidth surge in support of the 60 frame 4K video
Although HDMI 1.4b provides for 4K Ultra HD support, but it is still a full HD customize standard, based on 60 frames, the maximum can only support 2048x1536p video, and for 4K video, can provide 24 frame and a 30 frame frame. This rate is clearly unable to meet the demands of the future, therefore, the HDMI 2 specification will greatly enhance the transmission bandwidth to 18Gb, can be video 60 frame synchronization transmission of 4096x2160p resolution, provided sufficient bandwidth to support for UHD, 4K transmission.
Highlight two: audio transmission quality
From HDMI 1 to HDMI 1.4b, the HDMI alliance will mainly focus on the improvement of properties and characteristics of the video, not much improvement in the audio frequency, sampling rate of HDMI 1 supports 8 channel and 768kHz, in HDMI 1.4b, this specification without any changes. However, 2 as a giant version of the update, not only in the video are optimized, the audio level, also has a great leap forward. HDMI 2 offers up to 32 channels of support, there is no doubt that this is an amazing specifications, but also for home theater and build other professional audio-visual environment provides a rich selection. At the same time, HDMI 2 will be the largest audio sampling rate up to 1536kHz, realize the double audio fidelity rate.
Highlight three: the same screen double screen support
This is a contradiction to alleviate the family weapon. This and 3D are two different, but very similar technology. The same screen double picture, as the name suggests, is on the same screen, also showed two different picture, while the two user wear different glasses, can see their picture, no mutual interference, using this technology, a television is to allow multiple people at the same time watch different programs, family TV dispute will no longer exist.
Highlight four: strengthen the extension of CEC
In the HDMI specification was first introduced, the HDMI alliance provides support for CEC. The full name of CEC is Consumer Electronics Control, also is the consumer electronics control, it can make a variety of consumer electronics, audio and video playback control by wired or wireless means, make the operation more convenient. In the HDMI 2 specification, provides support for the CEC extension, provides extended command and control for CEC 2, to achieve a touch namely sowing, standby mode, remote transmission, audio control, record and so on, practicality greatly enhanced.
Highlight five: provide 21:9 screen ratio of support
Consumer electronics now, with 16:9 screen ratio, however, in a broader perspective and screen cost considerations, some 21:9 devices are emerging, the new HDMI 2 specification also provides for such shows the proportion of support.
Highlight six: automatic audio and video synchronization
In HD, pictures and audio without synchronization is not large probability events, but there is also, we often need to manually corrected, so that they can achieve synchronization, when using the HDMI 2 specification, this operation can be ignored. To provide synchronization function in support of HDMI, realize the synchronization of video and audio streams without the user operation situation.
Highlight seven: downward compatibility of cables and sockets
Although HDMI 2 added so many specifications, but at least on the compatibility, we don´t need to think too much, cable, and socket joint use with HDMI 2, and HDMI 1.4b is completely consistent, for consumer users, without the need for additional investment, can smooth upgrade to this version.
Highlight eight: no additional licensing fees for manufacturers For rich HDMI 2 features, we have to recognize, and whether it will increase our consumer terminal cost and price? The answer is no.. The HDMI alliance in the formulation of the HDMI 1.4b specification, the alliance as the foundation, established the HDMI forum, currently has 88 members, and more than 1300 of the adoption of business. Hope for the adoption of HDMI 2 standard makers, don´t need to pay an extra fee, as long as they are HDMI adopters, can get HDMI 2 of the patent license agreement before the free, but has not signed any agreement with manufacturers, can also obtain the authorization HDMI 2 patent through the new deal.