Xmultiple offers a complete product line of DVI and DMI connectors. DVI (Digital Visual Interface) was developed by the DDWG (Digital Display Working Group) to improve analog and digital image quality in PC applications. DDWG’s DVI concept converts analog signals into digital signals allowing PC-users to use of either analog or digital monitors. The DVI interface uses a single connector concept that interfaces the legacy analog signals (VGA) and/or the digital data protocol using TMDS (transition minimized differential signaling) from the PC to the display.

Because of bandwidth requirements and high-speed, sharp-edged, clock rates, DVI’s single-cable design is limited to a maximum length of 5-meters (16.4-feet). DVI’s cable length limitation presents few problems in PC-video applications but can be problematic in home entertainment applications because of the 5-meter length limitation and the fact the DVI cabling and connector interface does not have provisions for audio. There are three standard DVI connection interfaces:

DVI-A
Analog. DVI-A format interfaces the DVI signal to an analog display (e.g., CRT monitor, HDTV, et cetera) using a standard VGA (HD D-Sub 15) connector. The DVI design concept reserves pins to interface the analog RGB and sync signals from the PC’s graphics card to the monitor or display.

DVI-D
Digital (Single & Dual Link). DVI-D format interfaces direct digital signals from the graphics card or video source to a digital LCD or plasma display. PC graphics and images are digitally developed and converted from their native digital format to analog signals by the PC’s graphics card before being transmitted to the computer’s monitor using a VGA cable. This VGA conversion process works well for analog-based CRT monitors; but, when an LCD display is used the VGA image must then be converted back to its native format using high-speed digital signal processing techniques. DDWG’s DVI-D interface concept eliminates the need for double-conversion when LCD or plasma digital displays are used.


DVI-I
Integrated Digital/Analog. DDWG’s DVI-I interface concept supports either digital-to-digital or analog-to-analog signaling. The DVI-I interface does not support digital-to-analog or analog-to-digital signaling. Today most LCD and plasma displays are purely digital (DVI-D) while many support the DVI-I interface meaning that the display will accept either DVI-D or DVI-A signals.

List of Xmultiple DVI series of connectors - click here.

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