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Multi-monitor, also called multi-display and multi-head, is the use of multiple physical display devices, such as monitors, televisions, and projectors, in order to increase the area available for computer programs running on a single computer system. Research studies〔(I. Berger(2006) ). The Virtues of a Second Screen. ''New York Times''.〕〔(S.Ross (2003) ).Two Screens Are Better Than One. ''Microsoft research''.〕〔 (Z.Davis (2011) ). Dual Monitors Boost Productivity, User Satisfaction〕 show that, depending on the type of work, multi-head may increase the productivity by up to 50-70%. == Implementation == Support for a multi-monitor setup is either achieved by installing multiple graphics cards into one computer or by special display controllers, that have the ability to feed multiple monitors independently with a signal. Monitors supporting DisplayPort allow to drive multiple monitors from only one external clock. DisplayPort version 1.2 supports Multi-Stream Transport; this makes it possible to drive multiple displays on one single DisplayPort connector using a multi-head cable or loop through. The connection to monitors through interfaces which predate DisplayPort, such as VGA, DVI and HDMI, is also possible. But each analog connection requires its own RAMDAC, and also its own clock. The device driver usually includes the driver for the display controller; this software needs to support the hardware. Additionally, the device driver should facilitate the configuration of the mode and of the display group. Additional software support may be required; examples are Xinerama and RandR. Besides the single graphics card solution, there also solutions employing multiple graphics cards in one computer. And then there is the solution to connect multiple computers, e.g. over Gigabit Ethernet/Ethernet to drive a large video wall.〔(【引用サイトリンク】title=Configuring and Running a Large Video Wall using ATI FirePro Graphics )〕 Software supporting the latter setup is Maxivista, ScreenRecycler, InputDirector, Synergy, or Xdmx. The Electronic Visualization Laboratory at the University of Illinois at Chicago installed multi-monitor setup combining 55 LCD monitors which are connected to 32 PCs resulting in display resolution of 17600 × 6000 pixel. The Institute of Visual Computing at the Bonn-Rhein-Sieg University of Applied Sciences set up a 7 × 5 display video wall resulting in 72 megapixels resolution. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Multi-monitor」の詳細全文を読む スポンサード リンク
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