What is the HDBaseT interface? How to apply? What is the difference between it and HDMI?

A few days ago, a friend from the VIP technology group of the weak current industry network asked what is the HDBaseT interface ? What is his use? Some friends have encountered similar problems before. Speaking of HDBaseT interface , its function is really powerful.

In this issue, we will learn more about the role and application of the HDBaseT interface.

1. What is HDBaseT

HDBaseT is a high-definition digital display interface , which realizes an integrated connection between a high-definition video source and a remote display through a 100-meter/328-foot CAT5e/6 cable , providing uncompressed high-definition 4k video, audio, Ethernet, and control Signal and power up to 100 watts.

It is a data transmission technology developed by the consortium of major home appliance manufacturers Sony, LG, Samsung and Israel’s semiconductor companies from Japan and South Korea. It passed Intel’s HDCP certification in 2009 and confirmed the official HDBaseT 1.0 specification at the end of June 2010. .

HDBaseT does not redesign a new interface like HDMI and Display Port , but uses 8P8C (RJ45) interface that is familiar to the public, commonly known as crystal head or Ethernet interface , and the transmission medium uses a network cable that we are very easy to obtain and familiar with. In addition to providing video signal transmission functions, the HDBaseT standard also has network connection and Power over Ethernet (POE) functions . Therefore, HDBaseT technology is a transmission technology that can complete multiple functions with only one cable.

2. What is the role of HDBaseT interface? Difference from HDMI

Usually to do video transmission, we have to get various video signals, USB signals, HDMI cables, power cables, etc., which is a headache, and the wiring becomes more and more complicated!

How to make one line transmit all these signals?

HDBaseT technology solves this problem with a network cable.

1. The shortcomings of HDMl make HDBaseT

HDMI only transmits audio and video signals, and the distance is also limited in length . The quality of good brand HDMI signals can only be maintained at about 30 meters , and the cable price is also high for most users. Although there are some other wireless technologies as alternatives to HDMI. But their biggest problem is that there is no power transmission channel and the transmission rate is difficult to break through.

In addition, the HDMI Alliance requires fees to join, and the use of this agreement also requires licensing fees. Therefore, the HDBaseT Alliance composed of Sony, Samsung, LG and Valence Semiconductor has developed the HDBaseT solution , which has solved the above problems. From a certain point of view, HDBaseT can also be seen as a product of manufacturers against the HDMI Alliance.

2. The role and implementation of HDBaseT

HDBaseT is a standard based on network transmission. It can integrate audio, video, network, control signals and power supply lines together, and use ordinary network cables as transmission cables for transmission.

HDBaseT uses the simplest and lowest cost solution to meet user requirements. So the wire does not need to be specially made. HDBaseT uses the current Cat5e/6 network cable as the screen signal cable , which can not only transmit images and voice, but also retain the functions of the network cable itself. There is no doubt that the cost of HDBaseT is much lower than that of HDMI, which requires additional connectors and cables. HDBaseT will directly use the existing network cable connector, and the wire will directly support the common RJ45 network cable.

3. Advantages of HDBaseT:

♦HDMI cable generally has a transmission distance of only about 30 meters, which greatly limits the use range of high-definition equipment, while the transmission distance of HDBaseT can reach up to 100 meters.

♦HDMI cables are expensive, while HDBaseT uses cheap and easily available CAT5/6 Ethernet cables as the transmission medium.

♦HDMI is a closed standard. Manufacturers need to pay a certain license fee for using the HDMI interface, while HDBaseT is an open standard and there is no need to pay additional fees.

♦The HDBaseT standard currently supports a transmission rate of 20Gb/s, which is 4 times the HDMI transmission rate of 5Gb/s, and can fully meet all uncompressed 1080p or clearer 4Kx2K video transmission.

Three, the application of HDBaseT

Many high-definition cameras also have HDBaseT functions, which are suitable for PTZ high-definition color cameras in recording and broadcasting teaching, remote meetings, cloud meetings, online classrooms, surgical teaching, court hearings, enterprises and telemedicine applications.

HDBaseT interface has a large number of applications in projection and studio, we can learn about its introduction and application through the following video.

Because of the multiple advantages of the all-round interface HDBaseT technology , there are still many devices with this function, such as HDBaseT audio and video extenders, audio and video matrixes, audio and video encoders, etc., I believe that there are already many weak current friends in the project. have met.