Toshiba 51H84 51-Inch HD-Ready Rear-Projection TV with HDMI Input 51-inch widescreen (16:9 aspect ratio) HD-compatible projection television featuring CrystalScan HDSC upconversion to 1080i/540p HDMI (High-Definition Multimedia Interface) HDTV input provides a pure, uncompressed video connection with DTV receiver or set-top box PowerFocus HD CRTs enhance sharpness and brightness; PowerFocus HC lenses offer 50 percent higher contrast than other lens systems 3D Y/C digital comb filter with Vertical Contour Correction accurately processes RF and composite-video (DVD, VCR, camcorder) signals DFine high-speed velocity-scan modulation improves the definition at picture edges