TermsDOWNMIX
Changing multi-channel audio to dual channel stereo audio
by utilizing Dolby Surround processing.
525/60
DVD
A scan system with 525 horizontal lines and 60 interlacing
fields (30 frames) per second. Applied by NTSC.Abbreviation of Digital Video Disc or Digital Versatile Disc.
An audio/video/data storage system based on 12cm and
625/508 cm disc.
A scan system with 625 horizontal lines and 50 interlacing DVD-R
fields (25 frames). Applied by PAL and SECAM.A DVD version. Data can be recorded once by utilizing
ANALOGcoloring matter subliming technology.
HUE
A level theoretically changes infinitely in time and space. As
The color of ray or pixel. The color characteristics are
compared to DIGITAL.depending on the ray's main elements' wavelength.
ANGLEINTERLACE
A specific view of a scene recoded from a specific angle in A scan system. In scanning, the technique of using more
DVD-Video. When viewing the specific scenes, different than one vertical scan to reproduce a complete image. In
angles can be selected.television, 2:1 interlace is used, giving two vertical scans
(fields) per frame; one field scans odd lines, and one field
CD
scans the even lines of the frame.
Abbreviation for Compact Disc. A laser disc storage format ISO 9660
developed by Philips and Sony.
An international standard for the file system used in
CD-DACD-ROM.
Abbreviation for Compact Disc Digital Audio. The original Macrovision
music CD format storing audio information as digital PCM A recording protection technology. It alters the signals. The
data.playback looks normal in most TVs. However, when the
CD-Rrecorded materials are played back, pictures look very
distorted and invisible. Macrovision utilizes the characteristics
The extension of the CD format. Data can be recorded once of the AGC circuit and VCR color synchronous decoding
by utilizing coloring matter subliming technology.
circuit to interfere recording.
CD-ROMMPEG Moving Pictures Expert Group)
The extension of the CD-DA format. The computer data is An international committee who established a series of
stored in the digital format.compression stands of MPEG audio and video.
CHAPTERMULTIANGLE
Various angles for the scene (viewpoints of the video
Sections of a picture or a music piece on a DVD that are
smaller than titles. A title is composed of several chapters. camera) are recorded on some DVDs.
Each chapter is assigned a chapter number enabling you MULTILANGUAGE
to locate the chapter you want.Several languages for the audio track or subtitles in a
picture are recorded on some DVDs.
COMPRESSION
SATURATION
A process which eliminates redundancy of digital data to The color's intensity or brightness.
reduce the necessary storing or transmitting data size.
Lossless compression only eliminates the enough redundancy SIGNAL-TO-NOISE RATIO
to make date restore correctly. Lossy compression sacrifices Ratio of pure signals to irrelevant noise like tape noise
the additional data to achieve a larger compression.or video interference. It is measured by dB. The analog
recordings always have noise. The digital recordings have
CONTRAST
no noise provided that data are filtered at the front end
The range between the brightest and the darkest of an image.without compression.
DAC Digital-to-analog converter)SURROUND SOUND
A circuit converting the digital data (audio or video) to analog There are speakers in front of and behind audiences to
data.create a multi-line audio system composed of surround
simulation and directional audio source sound fields.
DIGITALTITLE
Expressed by numerals. For example, a computer utilized
The longest section of a picture or a music piece on a
a group of discrete numeric values. The analog data can be DVD; a movie, etc., for a picture piece on video software;
digitized by sampling.or an album, etc., for a music piece on audio software.
Dolby DigitalEach title is assigned a title number enabling you to locate
the title you want.
An audio encoding system developed by Dolby Laboratories
and recognized as the international standards. Dolby Digital TRACK
is the most common system of the DVD-Video encoding Sections of a picture or a music piece on a CD or VIDEO
audio and the normalized audio compression system of CD. Each track is assigned a track number enabling you
525/60 (NTSC) CD.to locate the track you want.
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ACEC
