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How much do you know DisplayPort?

Views: 105     Author: Site Editor     Publish Time: 2021-03-27      Origin: Site

It is said that "the DisplayPort task force has unanimously approved an alternative solution for adding copper wire as a hybrid device. The scheme is based on Luxtera's COMS optical equipment, using high-performance fiber patch cord as the signal transmission medium. At present, both UDI and HDMI are using copper cable transmission, conversion to fiber patch cord types can undoubtedly greatly improve the bandwidth. However, we can see from the statement that at present, only adding optical fiber as an optional solution will not completely replace copper wire, and the fiber optic patch cord DisplayPort interface is far from practical.


37-2- fiber patch cord



DisplayPort (on the left in the image above) is a 20 pin digital video cable developed by the video electronic Standards Association (VESA). It is one of the most advanced cables on the market today, specifically designed for computer displays.



Mini DisplayPort

The mini DisplayPort (right side above) is a reduced version of DisplayPort, which is used on devices that are too small to hold a standard DisplayPort.



DisplayPort 1.2

DisplayPort 1.2 is the current standard version produced by most cable manufacturers. DisplayPort was originally released in 2006 (version 1.0), but has since made some improvements. Some versions are also better than 1.2, but they are considered too high for unprofessional use. DisplayPort 1.1 allows the use of other transmission media, such as LC FC  patch cord, to increase the transmission distance, but does not standardize other transmission media. At the same time, HDCP is added to DisplayPort content protection (DPCP). A company named Luxtera is expanding the DisplayPort standard specified by VESA by adding an optical generator and adapter fiber optic to the display interface, so that the transmission bandwidth of the display interface will be greatly improved, laying a higher transmission foundation for better display cards and providing higher pictures. Because fiber patch cord transmission can use higher definition.




Thunderbolt is a derivative of mini DisplayPort developed by Intel and apple, which is the most common product on Apple products. Although thunderbolt and mini DisplayPort look the same, thunderbolt is more advanced. Mini DisplayPort is not forward compatible with thunderbolt, but thunderbolt is backward compatible with mini DisplayPort.



Compatible DisplayPort

Yes, both the DisplayPort cable and the actual DisplayPort are backward and forward compatible. However, the signal quality will only meet the specifications of the oldest connection in the system.



Distance Limit of DisplayPort

Recent developments have boosted the maximum distance of DisplayPort to 25 feet. The old limit was 15 feet. Optical fiber transmission with the FC adaptor is a kind of data and signal transmission based on fiber patch cables. The transmission distance of a single optical fiber can reach tens of kilometers without using a repeater.


Fiber patch cable is added to display interface to make optical fiber become transmission medium. In this way, the transmission bandwidth of the display interface can also be combined with optical fiber. Because the FC to FC patch cord itself has good fidelity, we can get higher definition pictures. DisplayPort can work with older video connections found on computers, namely DVI and VGA.

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