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Display port interface is displayed by line, for DVI / HDMI digital audio and video in the development of non. May 2006 VESA (Video Electronics Standards Organization) released the Display port 1.0 version of the standard, this is a show for all equipment (including internal and external interface) storage standards, and in March 2007 announced the 1.1 version, Is to increase the support HDCP.
 
 1. Display port applications:
 
 Display port for internal and external display connections, using a common interface. Internal display, including notebook computers connect the internal display or LCD display interface within the display interface. Connecting external display, including original equipment (desktop computers, set-top boxes, DVD players or video game) and display (flat panel display, projection displays) between the interface. Display port standards also include an optional digital sound transmission.

2. Display port characteristics:
 
 (1) transmission structure characteristics:
 
 Display port is a very important feature lies in the use, Micro-Packet Architecture (micro-structure of the packet) transmission system, the video content to send packets, which with DVI, HDMI, such as exchange of technology transfer there is a clear distinction. Compared with the exchange of transmission, micro-structure of the packet is a major feature flexible. Display port can easily achieve sub-screen display functions, because Display port in the same group Lane / Link (Channel / connection), multiple video transmission, and all this is the micro-structure given the strength of the packet. And the use of exchange-transmission of DVI, HDMI, such as video only in a group of Link, a group of video transmission.
 
 (2) high-bandwidth: high-definition video to be popular when no high-bandwidth display interface is not based on the.
 
 Display port come out early, it can provide bandwidth up to 10.8 Gbps, even if the latest release of HDMI1.3 provided by the bandwidth (10.2 Gbps) is also less in the Display port1.0. Display port can support WQXGA + (2560 * 1600), QXGA (2048 * 1536), such as resolution and 30/36 bits (each primary color 10/12 bits) depth, ensure adequate bandwidth for future large-size display of higher resolution The demand.

(3) the greatest degree of integration with the edge equipment: HDMI and the like, Display port also allows audio and video signals to share a transmission line to support a variety of high-quality digital audio. However, more advanced than the HDMI, Display port in a cable can achieve more on the functions of the four main transmission channels outside, Display port also provides a powerful auxiliary channel. The auxiliary, the bandwidth for 1 Mbps, the maximum delay was 500 μ s, as a direct voice, video and other low-bandwidth data transmission channels, and can also be used to control the game without delay. Therefore, Display port of peripheral devices can achieve the greatest degree of integration, control.
 
 (4) internal and external interfaces-take: the external current Display port connector-there are two: One is the standard, similar to USB, HDMI connector, and so the other is low-, the main link for the limited area of application, such as Ultra-thin notebook computers.
 
 In addition to equipment and equipment to achieve the connection between the outside, Display port equipment also can be used as the internal interface, and even between the chip and chip data interface. For example, Display port on the "plot" to replace LCD panels in circuit boards and drive interface between the mainstream LVDS (Low Voltage Differential Signaling, low-voltage differential signaling) interface position.
 
 (5) to simplify the design of related products: HDMI is DVI on the basis of development from, they all used the TMDS (the smallest signal transmission nutrients) times the transmission technology, video transmission before the digital signal must be converted to TMDS circuit TMDS signal. Display port and a digital signal can be directly exported without TMDS conversion circuit. Not only that, Display port also simplifies the design of the internal LCD. As DVI, HDMI can not directly driven Sequencers, VGA LCD or TMDS signal input, to be converted into LVDS signals. By contrast, Display port is to achieve integration with the panel, the panel can not be directly driven, streamlined LVDS conversion circuit.

(6) a high degree of scalability features: Despite Display port1.0 standards support only one audio transmission, but Display port with a high degree of scalability features, it must also transfer a number of video or audio signal is not a difficult business. Picture-in-picture, split screen display for the Display port in terms of "Xiaocaiyidie", a Display port Cable cable maximum support of six 1080 i or 3 1080 p video signals.
 
 (7) content protection technology more reliable: Unlike HDMI, DVI, as a HDCP, but the use of Philips Display port for the formulation of the contents of a copy-restriction agreement, the technology is based on 128 high-speed encryption engine, a standard key exchange methods, support RSA certification standards, providing up to 2,048 of the key length, the protection technology than the HDMI HDCP more reliable. Of course, Display port structure more flexible, vendors may also need to select other content protection agreement.

3.Display port development:
 
 From a technical point of view, Display port occupy a great advantage, but mainly their ancestors HDMI has the advantage to the end of 2005, the world has an HDMI registered 250 industrial companies, to design and manufacture of products with HDMI standard more than 400. Display port which has just come out soon, market development will take some time, but Fortunately Display port has been DELL, HP, ATI, NVIDIA, Samsung PHTT, TPS, Genesis Microchip, and other manufacturers of heavyweight support, whether it is the upper reaches of the video chip, board Card, the middle reaches of the cables, connectors, or the lower reaches of the PC, consumer electronics, Display port connecting the industry has been formed. The first batch is expected early 08 Display port products will enter the market.
 
 Although the HDMI in the PC and home appliances market is widely recognized, but Display port with technical superiority forward to challenge, the two "Roubo war" has quietly to avoid. No matter the final outcome, one thing we must understand that with the advent of high-definition era, the traditional video interface has been unable to meet the needs of PC and electronics audio and video interface unification is imperative.