History of displayport:
Formulate DisplayPort interface standards organization VESA (video electronics standards organization) to have participated in the 2008 of the world’s biggest consumer electronics show (CES2008), and detailed introduction about in the next generation of display device interface – DisplayPort 1.1.May in fact as early as in 2006, the VESA is released Displayport standard 1.0, this is a kind of for all display devices, including internal and external interface, open standards, and on the CES08, VESA announced Displayport has been updated to version 1.1, and make a report and explain in detail.
About the new DisplayPort interface, almost all of the personal computer manufacturers have expressed support for manufacturers and graphics, dell has Japan in December 2007, the first to launch support DisplayPort interface displays – dell 3008, and has been listed on sale in Japan.Plus on CES08 propaganda, predictable DisplayPort interface specification in 2008 will be dominant.
Important meeting, DisplayPort, Dell’s Bruce Montag for current DisplayPort 1.1 specification has carried on the detailed introduction, as well as to the DisplayPort market outlook in the future.First Bruce said Montag, DisplayPort interface can be perfect support HDCP agreement on the protection of digital content, and can transmit audio and video at the same time, in the true sense realize hd line solution.
The function of displayport:
Tell from the performance, DisplayPort 1.1 maximum support 10.8 Gb/S transmission bandwidth, and the latest HDMI 1.3 standard is only can support the bandwidth of the 10.2 G/S;In addition, DisplayPort can support WQXGA + (2560 x 1600), QXGA bit resolution (2048 x 1536) and 30/36 (each color 10/12 bit) color depth, the colour of 1920 x 1200 resolution support by 120/24 bit, ultra high bandwidth and resolution is completely enough to adapt to the development of display device.
1. High bandwidth
At the beginning of the DisplayPort appeared, it provides the bandwidth of up to 10.8 Gb/s, adequate bandwidth ensures that a large size display devices’ demand for higher resolution.
2. Integrated peripherals to the greatest extent
As HDMI and DisplayPort also allows audio and video signal transmission, sharing a cable supports a variety of high quality digital audio.But it is more advanced than the HDMI and DisplayPort on a cable also can realize more features.In four main transmission channel, DisplayPort also provides a powerful auxiliary channel.The transmission bandwidth of 1 MBPS, the auxiliary channel delay is only 500 mu s highest, can be directly as voice, video and other low bandwidth data transmission channel, and also can be used in the game control without delay.Visible, DisplayPort can realize to control the peripheral equipment integration, to a great extent.
3. The winner-take-all inside and outside the interface
DisplayPort type external joint has two kinds: one kind is a standard, such as USB, HDMI connection;The other is a low profile, the applications of connected area is finite, such as ultra-thin laptops.External longest distance of two kinds of joint can reach 15 meters, the relevant specification and connectors and wiring has been ready to upgrade in the future, even if the future DisplayPort adopt new 2 x speed standard (21.6 Gbps), connectors and wiring redesign also don’t have to.
In addition to the connection between devices and equipment, DisplayPort also can be used as equipment internal interfaces, even the data interface between the chip and chip.DisplayPort, for example, in the “plot” to replace the LCD liquid crystal panel and drive circuit board between the mainstream interface — an LVDS (Low Voltage Differential Signaling, Low Voltage Differential signal) the position of the interface.DisplayPort inscribed type connector is only 26.3 mm wide, 1.1 mm high, 30% smaller than an LVDS interface, but the rate is 3.8 times that of an LVDS.