Dane-Elec Memory 802.11 manual Glossary

Glossary

Aspect Ratio	Used to describe the distribution of pixels in a digital
	image. Increasing the aspect ratio of an image lowers
	the efficiency of the use of the pixels. The resulting
	image will have less detail than an image with the
	same amount of pixels, but with a lower aspect ratio.
Audio Video	Developed by Microsoft, a multimedia container format
Interleave (AVI)	which contains both audio as well as video data allowing
	Simultaneous playback.
Bandwidth	The range of signal frequencies that a piece of audio or
	video equipment can encode or decode; the difference
	between the limiting frequencies of a continuous
	frequency band. Video uses higher frequency that audio,
	thus requires a wider bandwidth
Composite	A picture signal combined with synchronization and
Video	(possibly) color information. It is a composite of three
	source signals called Y, U and V (together referred to as
	YUV).

MP3	Also known as MPEG-1 Audio Layer 3. A popular digital
	audio format that was designed to reduce the amount of
	data required to represent audio, without compromising
	the audio quality.
MPEG	The Moving Picture Experts Group is a working group that
	is responsible for the development of video and encoding
	standards.
NTSC	Adopted by the National Television Systems Committee,
	the analog television system that is currently in use in
	Canada, Japan, South Korea, the United States and some
	other countries, mostly in the Americas.
OGG Vorbis	An audio compression format that is absolutely free, open
	and unpatented

DivX®	Created by DivX Inc., a video codec that is able to
	compress large video segments into smaller sizes while
	maintaining a high visual quality.
dolby ® Digital	Audio compression technology developed by dolby ®
or AC3	laboratories. The technology contains up to 6 channels
	of sound, five channels for normal range speakers,
	which include Right front, Center, Left Front, Right
	Rear and Left Rear, as well as one channel for the
	subwoofer. Mono and Stereo usages are also supported
	by this format.
Digital Rights	Technology used by publishers to control access to and
Management	usage of hardware and digital data, such as software,
(DRM)	music and movies.
Digital Theater	A multi-channel digital surround sound form at that is
Systems (DTS™)	used for theatrical as well as consumer grade
	applications.
Downmixing	Downmixing allows playback device' to deliver a 5.1
	channel signal to a mono signal. This allows the
	traditional 2-CH television to use a 5.1CH audio signal.
Hi-Definition	Broadcasting of television signals with a significantly
(HDTV)	higher resolution than traditional formats, such as PAL or
	NTSC, would allow.

Phase	The analog (a 625-line / 50 Hz) television system that is
Alternation Line	currently in use in Europe and several countries in Asia.
(PAL)
Progressive	A method for displaying, storing or transmitting moving
Scan	images in which the lines of each frame are drawn in
	sequence. It subjectively increases vertical resolution and
	reduces flickering.
S-Video	Separate video is an analog video signal that carries the
	video data as two separate signals. S-Video works in
	480i or 576i resolution.
DVD-Video	A file format that contain DVD-Video media. It includes
Object (VOB)	the video, audio, subtitle and the menu contents in a
	streaming format.
VBR	Variable Bit Rate means that a bit stream has a
	changing number of bits per second. Simple scenes can
	be assigned a low bit rate, with complex scenes using a
	higher bit rate. This enables maintaining the consistency
	across audio and video quality with optimal file size.
Windows Media	A Microsoft product that is a compressed audio format
Audio (WMA)	developed to compete with the MP3 audio format.

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