Pixels Per Inch - Pixels per inch (PPI) is a measure of the sharpness (that is, the density of illuminated points) on a television display screen.
Wind Switch - Suppresses the rumbling background noise that might be heard on recorded video when the wind is blowing.
Enhanced TV - Also known as "datacasting." This term is used for certain digital on-air programming that includes additional resources downloaded to viewers. Some forms of enhanced TV allow live interaction; other forms are not visible on-screen until later recalled by viewers. Producers add these options to some digital programming to enhance program material -- allowing viewers the ability to download related program resources to specially equipped computers, cache boxes, set-top boxes, or DTV receivers.
Dolby Digital - This is a digital surround sound technology used in movie theaters and upscale home theater systems that enhances audio. Home theater components with this technology work in conjunction with a "5.1-speaker" system (five speakers plus a low-frequency subwoofer) to produce true-to-life audio that draws the listener into the onscreen action.
Line Doubling - A method used in some televisions to improve the visual quality of an NTSC interlaced picture, making it comparable to a progressively scanned picture.
Short Wavelength Red Laser - Supplies the shorter wavelength needed to match the tiny DVD pits. The laser has a noise reduction function to suppress interference and it exhibits stable oscillation at high temperature (60 degrees Celsius).
Shade - The brightness or luminance of an image when compared to a gray scale.
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