From Blackmagic Design:
Blackmagic HDLink is the exciting way to get low cost true HDTV resolution video monitoring on DVI-D computer monitors.
HDLink connects post production quality SDI video directly to any supported DVI-D based LCD computer monitor for incredible true HDTV resolution video monitoring. HDLink?s extremely compact design combined with full resolution HD makes it perfect for the studio, edit suite, telecine or even location video shoots.
Because every single pixel in the SDI video standard is mapped digitally onto the pixels of a 1920 x 1200 resolution LCD display, you get a perfect digital pixel for pixel HDTV image quality display.
There's simply no higher resolution HDTV monitoring possible!