What's DisplayPort?

At present, HDMI by supporting audio and video output, to provide enough to play 1080p High-definition program bandwidth and other advantages, is to the home appliance and PC Field launched a fierce attack. However, the road to the popularity of HDMI began, a more powerful, more bandwidth of the new interface DisplayPort it sent a strong challenge.

In May 2006, VESA (video electronic Standards Organization) officially released the DisplayPort 1.0 standard, which is an open standard for all display devices, including internal and external interfaces.

High bandwidth:

At the beginning of the DisplayPort, it provides bandwidth up to 10.8GB/S, supports wqxga+ (2560x1600), QXGA (2048x1536) resolution and 30/36bit (per color 10/12bit) color depth, Sufficient bandwidth to ensure the future large size display equipment for higher resolution requirements.

Integration of peripheral Equipment:

In addition to the main transport channel, DisplayPort provides a powerful auxiliary channel. The transmission bandwidth of the auxiliary channel is 1Mbps, the maximum delay is only 500μs, it can be directly used as the transmission channel of low bandwidth data such as voice and video, and can be used for game control without delay.

Internal and external interface:

At present, there are two kinds of DisplayPort connectors: One is standard type, similar to USB, HDMI and other connectors, the other is low type, mainly for the limited connection area of applications, such as Ultra-thin notebook computer. The maximum external distance between the two joints can reach 15 meters.

In addition to the realization of the connection between equipment and equipment, DisplayPort can also be used as an internal interface, or even a data interface between chips and chips.

Simplify product design:

DisplayPort digital signal can be directly output, and can simplify the internal design of LCD can directly drive the panel to display, streamlining the LVDS conversion circuit.

Content Protection Technology:

The

DisplayPort also wants to extend its tentacles to the consumer electronics sector, which is sensitive to copyright protection, and if there is no corresponding content protection technology, it is difficult to gain the favor of the film supplier even if its advantages are great. In this regard DisplayPort has been prepared, but it is not like HDMI, UDI, the use of HDCP, but instead of using Philips for DisplayPort a set of content control protocol, the technology based on 128-bit high-speed encryption engine, using a standard key exchange method, Supports standard RSA authentication, provides up to 2048 bits of key length, and protection technology is more reliable than HDMI HDCP. Of course, the DisplayPort architecture is more resilient, and vendors can choose other content protection protocols as needed.