Serial Digital Interface (SDI) is a digital video signal transport method used by the professional video and broadcast industries. The technical standard is maintained by the Society of Motion Picture and Television Engineers (SMPTE) as SMPTE 259M.
 
SDI features high bit rate SD or HD video in a digital format, with bit rates up to 270Mbps for SD format video (Level C), and 360Mbps for ED format (16:9)video.

DVI (Digital Visual Interface) is a digital video interface technology developed to maximize video quality transfer. Many DVD-players are now outputting their video contents digitally using DVI. In order for the display to show video correctly, it must comply with the HDCP - High-bandwidth Digital Content Protection - copy protection protocol that is used to encrypt the transfer between source and display. All current projectiondesign projectors support HDCP.

XPort™ technology is a projectiondesign proprietary interfacing technology - designed to expand the functionality of the projectors outside the base feature set. XPort™ can be used to insert additional sources to the projector, as well as enbable back-end processing such as geometry correction, blending and shading. See this document for more information.

Yes. All new projectiondesign projectors feature our unique DPEq Digital Pixel Equalization circuitry to compensate for cable runs up to 30m /100 ft (using 24 AWG cables) without signal loss. The initial specification for DVI (Digital Visual Interface) stated this length as the maximum possible distance to meet full specifications and criteria. However, experience shows that for instance full resolution HDTV, 1280x720 or 1920x1080, easily can be transferred longer. It is not unusual to use cables up to 15m (50 feet) without any problems whatsoever. It must be noted that functionality is strongly dependent also on the quality of the source output, as well as the cable in question.

A display device has to cover the following requirements to be awarded the label "HD ready":

1. Display, display engine - The minimum native resolution of the display (e.g. LCD, PDP) or display engine (e.g. DLP) is 720 physical lines in wide aspect ratio.

2. Video Interfaces

• The display device accepts HD input via: Analogue YPbPr1; and DVI or HDMI
• HD capable inputs accept the following HD video formats: 1280x720 @ 50 and 60Hz progressive ("720p"), and 1920x1080 @ 50 and 60Hz interlaced ("1080i")
• The DVI or HDMI input supports content protection (HDCP)

All projectiondesign Action! model one projectors are labelled HD ready, with their 1280x720 resolution. Likewise with the F1 SXGA and F1+ SXGA+ series and F3 SXGA+. All our other projectors are compatible, and will gladly show HDTV contents, but are, due to their lower resolution, not eligible for the label HD ready.

High Definition Multimedia Interface is an interface specifically designed for domestic use, or specifically home cinema and home entertainment. HDMI is designed to be able to carry a high definition digital image, as well as multi-channel high definition audio (24/196) digitally through a single cable. HDMI can be used to transport high quality images from for instance DVD players and Set Top Boxes to the projector, and includes HDCP contents protection. HDMI uses the DVI protocol to transfer image data.

HDCP – High bandwidth Digital Contents Protection – is an encryption standard used to encrypt DVI and HDMI video signals between the source (DVD player or similar) and the display. It is totally transparent to the signal, and does not, unlike certain audio copy protection, watermark the signal with audible or visible distortion.

We feel that the rigid construction of the DVI connetor is much better than the fragile HDMI connector, especially when it comes to supporting heavy gauge installation cables. Still, where we are using DVI connectors only, these are fully compatible with HDMI, image wise.