Bose Lifestyle 35 Manuel d'utilisation - Page 8
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Introduction
Chapter – In DVD-Video, a division of a title. Technically called a part of title (PTT).
Component video – A video system containing three separate color component signals,
either red/green/blue (RGB) or chroma/color difference (YPbPr), in analog or digital form. The
MPEG-2 encoding system used by DVD is based on color-difference component digital
video. Most televisions do not have component video inputs.
Composite Video – A single video signal that contains luminance, color, and synchronization
information. NTSC and PAL are examples of composite video systems.
Dolby Digital 3/2.1 – A more technical representation of Dolby Digital 5.1 sound. The "3" rep-
resents the 3 front channels, and the "2.1" represents the 2 surround channels including a
LFE (low-frequency effects) channel.
DVD – An acronym that is most commonly known to mean Digital Video Disc or Digital Versa-
tile Disc. The audio/video/data storage system is based on 12-cm optical discs.
DVD Video – A standard for storing and reproducing audio and video on DVD-ROM discs,
based on MPEG video, Dolby Digital and MPEG audio, and other proprietary data formats.
IR – An acronym for infrared. Pertains to the type of remote that sends/receives commands
on an infrared light beam.
Letterbox – The projected aspect ratio of feature films is often wider than 525 or 625 line
video formats. It is becoming common practice to transfer films to video with black borders at
the top and bottom of the picture. The film picture becomes a "letterbox" within the video.
MP3 – MPEG-1 Layer III audio. This is a compressed audio format that allows you to record
many hours of music on a single CD.
NTSC – An acronym for National Television System Committee. The organization that devel-
oped both the American Black & White and Color television system.
PAL – An acronym for Phase Alternate Line. This is one of several composite video systems.
The PAL format is used extensively in Western Europe.
PCM – An uncompressed, digitally coded representation of an analog signal. This is the form
of the digital audio signal used for both CD and laserdisc. It is a serial data stream that is
coded for transmission or recording. PCM is also used for many other types of serial data
communications.
S-video – A video interface standard that carries separate luminance and chrominance sig-
nals, usually on a four-pin mini-DIN connector. Also called Y/C. The quality of S-video is sig-
nificantly better than composite video since it does not require a comb filter to separate the
signals. Most high-end televisions have S-video inputs.
YPbPr – A component analog video signal containing one luminance and two chrominance
components. Often referred to loosely as YUV or Y, B-Y, R-Y.
6
October 30, 2001
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