introduction
Since the launch of the MHL standard in 2010, the number of devices using MHL technology has reached 900 million units worldwide. Now, the superMHL standard is poised to help home theater applications deliver a unique, proven and comprehensive experience in video, audio, power and control.
superMHL is the first interconnect standard to support transmission of 120 frames per second (fps) 8K resolution video. Advanced color and High Dynamic Range (HDR) support ensures that images not only contain more pixels, but also deliver brighter, brighter colors for lifelike quality. Compared to the previous MHL standard, the sounds supported by the superMHL specification have also benefited from the target audio technology of Dolby and DTS. The specification also introduces new connectors and cables that can be plugged in and out, which simplifies the hidden plug on the back of the TV and helps users with new USB 2, smarter control channels and up to 40 watts of power. The way to connect and control the device.
Why is the superMHL specification designed for home theater?
The MHL ConsorTIum was originally created to solve a specific problem: transferring raw audio and video from a mobile device to a larger display. To achieve this goal, a number of technical challenges must be addressed: how to transmit data at a gigabit rate using a twisted pair? How do I use the same cable to transfer HD video, audio, and data, as well as power my mobile device? How do you ensure that the TV's remote control also controls the video, regardless of the manufacturer of the TV, remote control or mobile device? Addressing these challenges for the mobile market requires the development of a large number of new technologies and makes them a set of standards. Naturally, the solution to solve the above challenges can be used in the home theater field once it becomes a standard. In view of this situation, the founders of the MHL Alliance, including technology giants such as Sony, Samsung and Toshiba, jointly developed superMHL, which integrates the above technologies into a new multi-channel architecture, providing bandwidth that not only meets current needs, but also It is a challenge to provide a platform for continuous development in the future of the home theater market.
What is the importance of the superMHL connector for the home theater market?
The introduction of superMHL connectors is in line with the two trends in the home theater market: one is the connector for the future, it needs to meet the current market's first 8K video and the bandwidth demand of future indoor applications; the second is the positive and negative Pluggable connector. The new superMHL connector meets these needs, with a single 32-pin front and back pluggable connector now supporting an amazing bandwidth of 108Gb per second, while doubling bandwidth in the future.
Screen Resolution To support higher screen resolutions, color depths, and refresh rates, the bandwidth mentioned above is required and will increase. At various technical conferences and trade shows, demonstrations of 8K resolution screens are not uncommon. NHK, the Japanese public broadcaster, has conducted and plans to test 8K live broadcasts on major sports events, including the 2015 Wimbledon, the 2016 Super Bowl and the 2016 Rio Olympics, and is ready to be rolled out in 2018.
Both positive and negative can be plugged and unplugged In the past few years, the pluggable interface has become more and more popular, and its emergence has solved one of the long-standing troubles. With the help of superMHL, home theater can also provide such convenience. With this interface for future applications, it is easier for users to plug in the black plug.
Uncompromising quality
The characteristics of superMHL can be broadly divided into two categories: quality and flexibility. Features such as 8K, advanced color gamut support, and target audio technology are designed to ensure that users' devices deliver the highest quality images and audio, while new front and back pluggable interfaces provide integrated power, data and control functions. To help users connect more easily and intuitively and use superMHL features.
8K
superMHL is the first interconnect standard to introduce 8K 120fps resolution into the living room. As shown in Figure 4, the 8K UHD (7680 x 4320 pixels) resolution has 4 times the pixel density of 4K UHD and 32 times that of 1920x1080p HD. The superMHL device supports a refresh rate of up to 120fps for 8K UHD resolution. MHL supports a wide range of resolutions to ensure that HDTVs and Ultra HDTVs work properly when connected to an MHL output source without compatibility issues.
Advanced color gamut support
superMHL extends the maximum color gamut that can be rendered by implementing support for BT.2020, from 35% to 80%. This advantage provides consumers with a more dramatic visual experience and is expected to be used in digital TV, digital video equipment, enhanced broadcast and next-generation Blu-ray disc players.
High Dynamic Range (HDR)
superMHL is also the first video interconnect specification to support HDR. HDR is used to render ultra-realistic videos and images that enhance the exposure level and more realistically simulate the dynamic range of the human eye to deliver the desired effect. After a series of stunning conversions of the image at 8K and 4K UHD resolution, the viewer can see the details of the brightest and darkest parts of the image. It brings lifelike video images, including shadows, sunsets, shimmer and panoramas. superMHL supports HDR for static metadata based on SMPTE 2084 and supports dynamic metadata when specified by specific organizations such as SMPTE.
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