DisplayPort Testing – Ensuring Compatibility For Customers


DisplayPort is an audio-video interconnect standard that is designed to advance display simplicity and the adoption of protected digital outputs on computers. This allows users to simply view HD content and other protected files. Because DisplayPort signaling can broadcast both DVI and HDMI signals ( other digital display protocols ), DisplayPort is compatible with many popular interconnects and subsequently, the consumer devices that use the standards. For consumers, this implies they can simply incorporate DisplayPort sources or devices in their homes and offices.
The DisplayPort interface standard, defined by the Video Electronics Standards association ( VESA ), an organization that promotes standardization in the display segment, is a digital audio/video interconnect for computers, monitors and home-theater systems. Formally licensed in 2006, DisplayPort includes DisplayPort Content Protection ( DPCP ). This content protection capacity uses 128-bit encryption and features full authentication and session key multinational. For consumers, this indicates that even commercially protected content will play back over the DisplayPort interface, ensuring a seamless user experience.

DisplayPort Version 1.1 added support for high-bandwidth digital content protection ( HDCP ) to stop duplicating of digital audio and video content as it travels across a DisplayPort Cable to a display device.
PC makers developed DisplayPort to address computing concerns and replace the external analog video graphics array ( VGA ) interfaces in computer and LCD displays and in consumer electronics equipment. In addition, DisplayPort offers extra capacities over external digital visible interface ( DVI ) connectors found in devices. It also intends to replace internal, board-to-display low voltage differential signaling ( LVDS ) links in devices with a unified link interface.

DisplayPort technology appears to be gaining momentum. According to a 2008 report from industry analyst firm In-Stat ; DisplayPort is envisioned to get to the milestone of more than 600 million products shipped by 2012. Some notable industry heavyweights, like Dell, as an example, already have numerous displays shipping with DisplayPort technology.
Mini DisplayPort – Apple drives smaller form factor
The Mini DisplayPort interface is a smaller version of the normal DisplayPort plug and connector, and was first publicly told by Apple in 2008. Apple products featuring the Mini DisplayPort connector include the MacBook family of portables, the iMac, Mac Mini, Mac Pro and the whole Apple cinema line of displays. DisplayPort replaced the DVI and mini-DVI interfaces found on previous generations of Macs.
The DisplayPort 1.2 specification is anticipated to be completed by VESA by the end of this year. The DisplayPort 1.2 design offers features including :
— Multiple stream support over one connector
— Optional higher speed auxiliary channel which will enable bi-directional bulk data transfer over one DisplayPort cable
— additional support for DisplayPort Mini-connector
— Backward compatibility with DisplayPort version 1.1a

While VESA doesn’t need certification of DisplayPort products, it is highly encouraged. Once a manufacturer’s device is certified, the maker obtains the right to use the DisplayPort trademark. The DisplayPort Certified logo reassures end users that certificated products will interoperate correctly and provide a high quality digital display experience.

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