Tuesday, July 13, 2010

HDBaseT Networking

HDBaseT to replace HDMI as the new A/V/control standard

HDBaseT to replace HDMI as the new A/V/control standard

HDBaseT technology runs over STANDARD Cat5e/6 cable and implements ‘5Play’, which is a feature-set that converges full uncompressed HD video, audio, 100BaseT Ethernet, and various control signals. It also transmits up to 100W of power - that's enough to drive a 37-inch TV. And it can extend up to 100 meters passively. HDBaseT has the bandwidth to support the highest video resolutions such as full HD 1080p as well as 3D and 2Kx4K formats. HDBaseT is the first to provide all-in-one connectivity, making it possible for a single-connector TV to receive power, video/audio, Internet and control signals from the same cable.

What makes HDBaseT so odd is that it is sending more info than HDMI over a set of 8 wires within a standard Cat5e or Cat6 cable. It can do this by using much lower frequency modulated packets. These are not IP packets like you find in Gigabit Ethernet. Since they run on such low frequency, they are not subjected to typical EM (electromagnetic) interference. That means you can make the the cables lie in front of a microwave or a cell phone and there are no problems with signal degradation.

What's REALLY impressive is that HDBaseT's protocol allows you to literally NETWORK your sources and displays just like you do your home data network.

5Play is concurrent in its ability to send all of these different types of data. It converges full uncompressed HD video, audio, 100BaseT Ethernet, high power over cable and various control signals through a single 100m/328ft CAT5e/6 LAN cable. HDBaseT has the bandwidth to support the highest video resolutions such as full HD 1080p as well as 3D and 4K x 2K formats. HDBaseT is the first to provide all-in-one connectivity, making it possible for a single-connector TV to receive power, video/audio, Internet and control signals from the same cable.

Here's a quick comparison against other existing technologies:

 

Feature

HDMI 1.4a

DisplayPort 1.2

HDBaseT 1.0

Uncompressed Video/Audio 10.2Gbps 21.6 Gbps (17Gbps data) 10.2Gbps (can scale to 20Gbps)
Max Passive Cable Length ~5-7m 15m for 5Gbps (3m for 5-21.6Gbps) 100m (plus 8x multiple hops)
Cable type HDMI DisplayPort Cat5e/6
Connector type HDMI DisplayPort RJ-45
Charging power No No 100W
Daisy chainable No Yes Yes
Installation-friendly Heck No No Yes (can use existing wiring)
USB No Yes Yes
Networking methods None Daisy & Star Daisy & Star (with extended-range)

LG, Samsung, Valens Semiconductor and Sony Pictures are behind the HDBaseT. The 1.0 spec is completed.

Since HDBaseT is capable of sending 100W of POWER over a single Cat5e/6 cable, this means that many smaller televisions (figure 37-inch TVs at the most right now) are going to be able to receive literally everything they need from a single cable - even without an electrical outlet nearby. This is over a standard Cat5e/6 (Ethernet) cable. It doesn't need to be shielded and there's no danger involved in sending power within. HDBaseT is working with UL right now on certification for this, but there are no warning signs or inherent problems with it passing. At this point, it's just going though the proper motions & channels.

From audioholics.com.

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