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Appendix B - Glossary
Amplifier
Anamorphic views
Aspect ratio
A/V switch
DLP® (Digital Light
Processing)
DVD recorder (DVR)
HDTV (High Definition
Television)
Light controller
Mini-system
NTSC
(National Television
System(s) Committee)
Output Device
A stereo component that outputs to speakers, and increases the gain or
level of an audio signal. An amplifier doesn’t typically include a radio.
Also referred to as Enhanced for Widescreen, or Enhanced for 16:9.
The process that horizontally shrinks a 16:9 image into a 4:3 space
to convert images between widescreen and typical television image
aspect ratio. Used on many DVDs.
The ratio of image width to image height. Common motion-picture ratios
are 1.85:1 and 2.35:1. Television screens are usually 1.33:1 (also known
as 4:3). HDTV is 1.78:1, or 16:9.
A device with several audio and video source inputs that sends a selected
audio/video source input signal to an output device like speakers or a TV.
Projector screen technology that relies on using individually controlled
tiny mirrors (micro mirrors) to produce an image. Developed originally by
Texas Instruments.
A standalone unit that resembles and functions very much like a VCR.
Like a VCR, DVD recorders all have AV source inputs. It can also record TV
shows.
The high-resolution form of television. HDTV has 1125 lines of resolution,
or more than five times the video information than that of a TV set,
creating a much crisper, more detailed picture.
A device that is connected to a set of lights and allows the lights to be
powered or dimmed remotely.
A single unit that is some combination of the functionality of a DVD, VCR,
radio, and amplifier.
The standard video broadcast format used in North America.
A device that produces the sound or picture, for example,
a TV or speakers.