A Glossary - Christie roadie 25k User Manual

This appendix defines the specific terms used in this manual as they apply to this projector. Also included are other
general terms commonly used in the projection industry as well as in the digital cinema projection industry.
3:2 Pulldown
Active Line Time
Alternative Content
Ambient Light Rejection
Anamorphic
ANSI
Answer Print
Aspect Ratio
Authoring
'
A frame sequence used to map 24 fps film to 30 fps video (or 24/1.001 to 30/1.001
fps) in which every second film frame is represented by three video fields instead of
two, the third being a repeat of the second. This leads to a set of ten video fields for
each four film frames.
'
The time—inside one horizontal scan line—during which video data is present.
'
Non-cinema program material such as concerts, plays, sporting events, and
potentially corporate training or conferencing, presented in theatres in addition to
motion picture exhibition.
'
The ability of a screen to reflect ambient light (i.e., light within a room from a source
other than the projector) in a direction away from the "line of best viewing". Curved
screens usually have better ambient light reflection than do flat screens.
'
Having or requiring a linear distortion, generally in the horizontal direction.
Anamorphic lenses can restore a 'scope' (CinemaScope) or 'flat' format film frame
to the correct wide-screen appearance by increasing its horizontal proportion. The
Roadie 25K uses a 1.25x scope anamorphic lens option only.
'
The American National Standards Institute is the organization that denotes the
measurement standard for lamp brightness.
'
A print made from the cut original (camera) negative with proposed final color
timing and soundtracks, furnished by the printing lab to the producer for acceptance
of image and sound before screenings and manufacturing begin. A check print is
similar, but is made from the internegative. A blacktrack answer print has no
soundtracks.
'
The ratio of the width of an image to its height, such as the 4:3 aspect ratio common
in video output. Also expressed as decimal number, such as 1.77, 1.85 or 2.39. The
larger the ratio or decimal, the wider and "less square" the image.
'
The process, tools, and working environment by which content elements and
functions are compiled, formatted, coordinated, and tested for presentation on target
systems. Comment: Authoring in the context of digital cinema does not necessarily
result in inseparably married or muxed content components. Rather, reference is
made to a virtual answer print, the elements of which may subsequently be
subdivided or combined, encrypted in whole or part, and packaged in various ways
A p p e n d i x A
Glossary
Roadie 25K User's Manual
A-1