Christie roadie 25k User Manual page 160

GLOSSARY
Metadata
NTSC Video
Non-cinema
Non-Sync
Non-unicode
Optical Screen
PAL Video
Pixel (picture element)
Pixel Phase
Pixel Tracking
Play List
Playout
A-6
Roadie 25K User's Manual
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Lux The amount of visible light per square meter incident on a surface.
1 lux = 1 lumen/square meter = 0.093 foot-candles
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Descriptive data about the format of the content—i.e., "data about data". Upon
receiving metadata, digital cinema projectors will "know" the correct aspect ratio of
the image, and the sound processor will "know" the correct format of the audio, all
without effort on the part of the person setting up the show on a particular projector.
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A 525-line resolution video output format of some video tape and disc players. There
are two types of NTSC (National Television Standards Committee) video: NTSC
3.58 and NTSC 4.43. NTSC 3.58 is used primarily in North America and Japan.
NTSC 4.43 is less commonly used.
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Alternative program material such as concerts, plays, sporting events, and potentially
corporate training or conferencing, presented in theatres in addition to motion picture
exhibition.
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Audio played in a theatre, generally from a CD, when the cinematic presentation is
not running, such as during intermissions and prior to the start of film presentation.
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The non-unicode method of encoding produces a concise character set of 256 alpha-
numeric characters typically used in for ASCII messaging in most Western
languages. Virtually all projector functions can be executed remotely via non-unicode
(default) or unicode messaging—this is auto-detected. See also unicode.
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A type of rear-projection screen which re-directs light through the screen to increase
image brightness in front of the screen. Screen gain is usually greater than 1 but
audience viewing angles are reduced. Rarely used in cinema applications.
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PAL (Phase Alternating Line) video is a 50 Hz standard with 768 x 576 resolution. It
is found on some video tape and disc players used primarily in Europe, China and
some South American and African countries.
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PCF Projector Configuration File, or Presentation Control File. A small file created by the
content owner or installer that controls the presentation of the elements and data
subdivisions constituting a single version of a title. The human readable component
may identify the name of the title, its owner, its length, event points, and other
attributes. The PCF specifies color space, target color gamut, gamma (a.k.a.
"degamma"), aspect ratio and image position settings. It does not include screen
masking (cropping) information. A d-cinema presentation or feature uses a PCF.
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The smallest discernible element of data in a digital image.
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The phase of the pixel sampling clock relative to incoming data.
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The frequency of the pixel sampling clock, indicated by the number of pixels per
line.
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A small file or script typically created by the exhibitor or installer that specifies the
sequence of presentation of programs, including features and trailers.
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The equipment in a digital cinema theatre which delivers previously recorded signals
in real time to the playback system. The playout may also receive, store, and process
these signals prior to delivering them.