As the current high-definition video has gradually become the mainstream film standard, and 4K displays are becoming more and more popular, the transmission specifications of past data may not meet the future needs. The HDMI Forum also announced their new Image transmission standard: HDMI 2.1, this new specification will also consider the demand for future 10K images, and the transmission speed of images will be greatly improved.
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HDMI transmission lines are now commonly used in audio and video transmission between TVs, Blu-ray players, game consoles, video streams, speakers, computers, etc. An HDMI transmission line carries both sound and video signals, which can provide data during transmission. Digital encryption, and to ensure that the video will not be attenuated during transmission.
Regarding HDMI 2.1, the main points of information published by the HDMI Forum are as follows:
Physically, the HDMI 2.1 cable looks exactly the same as the current HDMI 2.0 look.
Transmission bandwidth The highest data transmission speed from current HDMI 2.0 is 18Gbps, while the HDMI 2.1 specification increases the transmission speed bandwidth to 48Gbps.
The image resolution that can be carried is increased to 10K, and the update rate is up to 120fps.
HDMI 2.1 will support "Dynamic HDR", which provides better display than static HDR with frame-by-image enhancement.
The new cable will be able to carry higher resolutions and higher update rates.
The HDMI 2.1 specification has not yet been fully finalized and is expected to be formally established between May and June 2017.
The first batch of products may be launched later in 2017, but the official shipment should be in 2018.
Simply put, the main improvement is the HDMI 2.1 transmission line bandwidth is increased to 48Gbps. Since the bandwidth that the cable can carry is increased, it is of course possible to increase the resolution of the image that can be transmitted and the update rate of the screen.
For example, a 3,820 & TImes; 2,160 4K UltraHD signal is transmitted over an HDMI transmission line, requiring four times the HD signal with a resolution of 1,920 & TImes; 1,080. If you think of an HDMI signal line as a water pipe, a water pipe carrying 4K of water needs to be larger than a water pipe carrying 1080 water. Similarly, at the same resolution, the water pipe you want to carry 60fps of image water needs to be larger than the water pipe carrying 24fps image.
Therefore, HDMI 2.1 is equivalent to opening a larger door for resolution and update rate. In addition, it also supports dynamic HDR applications, so the depth of field, detail, brightness, and contrast of the image can be improved in the future. Displayed in a wider color gamut. In addition, there will be further improvement in quality in terms of sound quality.
According to the timetable of the HDMI Forum, it is expected that by 2018, it will be fully upgraded to HDMI 2.1. But how much will this affect you?
In fact, I am afraid it is not big. Because you can't upgrade your current TV to HDMI 2.1, and you don't need to upgrade, because there isn't much 8K video content right now, and by 2018, I'm afraid this change will not be much. However, by 2018, the TV you bought will be based on HDMI 2.1. But to have content that supports this specification, I am afraid I will wait a little longer.
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