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| V-Chip |
The V-chip is a technology that enables parents to block television programming based on a program's rating. The ratings are encoded within the television signal. The V-chip reads the encoded rating information of each program and blocks shows according to the parents' blocking selections. |
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| VCR |
Video Cassette Recorder. |
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| VHF |
Very High Frequency. This is the part of the radio spectrum from 30 to 300 megahertz, which includes TV Channels 2-13, and the FM broadcast band. |
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| Video Compression |
Video compression refers to reducing the quantity of data used to represent digital video images, and is a combination of spatial image compression and temporal motion compensation. |
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| Virtual Channel |
In telecommunications, a channel designation which differs from the actual channel or frequency on which the signal travels.
The term is most often applied to television, where Digital Television (DTV) channels are in-band adjacent to analog ones.
A station branded as Channel 8, for example, might actually use channel 32 for its ATSC or DVB transmission, but a Virtual Channel Map allows viewers to tune in the station on channel 8 on a digital set. The virtual channel thus enables viewers to tune in the station by choosing the same channel number as they would have previously.
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| VGA |
Video Graphics Array. This is a display mode with a resolution of 640 x 480 pixels. |
