Compression - Compression refers to the reduction of the size of digital data files by removing redundant and/or non-critical information ("data" being the elements of video, audio and other "information"). Digital TV in the U.S. would not be possible without compression.
Y, PB, PR - A method for carrying the video between HDTV or SDTV devices that retains the maximum quality and is recommended for HD television. The video is carried on three cables, respectively carrying luminance (Y) and the two color difference signals (PB, PR).
Signal to Noise Ratio - A comparison between signal and noise levels measured in decibels. A ratio of wanted signal to unwanted noise. This ratio is abbreviated as S/N.
Skip Search - Enables you to skip through unwanted tape segments at 30-second increments.
Multicasting - The option to multicast was made possible by digital technology to allow each digital broadcast station to split its bit stream into 2, 3, 4 or more individual channels of programming and/or data services. (For example, on channel 7, you could watch 7-1, 7-2, 7-3 or 7-4.)
Line Art - Artwork that is only black and white, with no other tones included.
Parental Lock - Many movies on DVD are available with variable ratings capability. According to your parental lock setting, the movie will skip over particular scenes, playing the version that you choose from among those available on the disc. This feature can be set by remote, with a password, to prevent the settings being changed without permission.
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