Glossary of Media Terms

VBI (Vertical Blanking Interval) – see, Blanking Interval

VCR (Video Cassette Recorder) – A machine attached to a television set used to record TV broadcasts for later viewing or to play pre-recorded video programming.

VHF (Very High Frequency) – Television Channels 2 through 13 (54 to 216 mHz).

VHS (Video Home Systems) – Homevideo format based on half-inch wide video tape housed in a cassette.

Video Compression – Digital technology that compresses video and audio transmissions so that more data can be transmitted. This allows for expansion of broadcast, cable and satellite channels.

Video Disc – A disc on which video and audio information is stored (or recorded) for playback through a home television receiver.

Video Tape – A magnetic tape which may record and play back both picture and sound.

Videotext – Various electronic text systems that allow printed information to be called up on a television screen.

Viewers Per Viewing Household (VPVH) – Estimated number of viewers, usually classified by age and sex, comprising the audience within those households viewing a given station or program or using television during a particular time period. Also called Viewers Per Tuning Household (VPTH).

ViP (Viewers in Profile) – The local television ratings book from Nielsen Media Research, issued 3-7 times a year for each of the 210 television markets in the U.S.

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