  CNET GLOSSARY: Terms for the techie
vertical compression
Feature found on 4:3 TVs designed to take advantage of the extra resolution in anamorphic DVDs and other wide-screen content. Pioneered by Sony, this feature squeezes the TV raster so that the electron beam scans in a smaller area. It requires setting the DVD player to 16:9 mode, eliminates anamorphic downconversion artifacts, and ideally provides a 33 percent increase in resolution in the letterboxed image. 
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