Technology / Television (TV) Glossary

Line Doubling: A method, through special circuitry, to modify an NTSC interlaced picture to create an effect similar to a progressively scanned picture. The first field of 262.5 odd-numbered lines is store . . . View Full Definition

Linear Perspective: A method of drawing or painting that converts the three dimensions of reality into two dimensions. Originally developed during the European Renaissance, it formed the foundation for how lens . . . View Full Definition

Lip Sync: Synchronizing a performance to recorded speech or music: most frequently found in music videos, wherein the performers mouth the words to the pre-recorded song while they are filmed or videotaped.

Liquid Crystal Display: An LCD television or monitor uses liquid crystals that act as 'shutters' within the television screen. An LCD television has thousands of small light sources at the rear of the display. A la . . . View Full Definition

Live Plus Ratings: Nielsen Media Research term for live ratings plus seven-day DVR playback activity.

Live Ratings: Nielsen Media Research term for ratings reported as strictly live with no DVR playback activity.

Live-On-Tape: A video production that is recorded live, with most of the editing done while the scenes transpire (rather than in post-production).

LNB-LNBF: Low Noise Block down-converter with integrated feed: amplifies received signals and converts them from microwaves to lower L-band frequency signals which are then sent along a cable to the s . . . View Full Definition

Local Marketing Agreement (LMA): An agreement between two owners in which one markets and sells advertising for the other.

Local Spot: The advertising purchased in a market and aimed only at the audience in that market.

Location Settings: Pre-existing settings that are chosen as backgrounds for television programs.

Locks and Limits: Allows you to restrict viewing of rated movies (based on the motion picture rating system) or to lock out entire channels.

Long Shot (LS): A framing that presents entire objects or persons--situating them in a setting.

Lossy Compression: Reducing the total data rate by discarding data that is not critical. Both video and audio for DTV transmission use lossy compression.

Loudness (Volume): How loud or soft a sound is. See dynamic range.

Low Angle: A shot in which the camera is lower than the filmed object: thus the camera looks up at the actor/object.

Low-Key Lighting: A lighting style wherein the key light is so much more intense than the fill light that there is a high contrast between bright and dark areas. The bright areas are especially bright and the . . . View Full Definition

Luminance: (Light or Brightness) In video signals the component that includes information about its brightness.

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37