Barco SP2K-C, Руководство по установке

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147 R5914712 /00 SP2K-C
Digital Cinema Initiatives (DCI)
DCI is a joint venture of Disney, Fox, Paramount, Sony Pictures Entertainment, Universal and Warner Bros.
Studios. DCI's primary purpose is to establish and document voluntary specifications for an open architecture
for digital cinema that ensures a uniform and high level of technical performance, reliability and quality control.
Note that the DCI specification is not a standard. Standards for digital cinema are the domain of the Society of
Motion Picture and Television Engineers (SMPTE). "DCI compliant" is a term used to describe products that
conform to the DCI specification. Products that have been tested per the DCI Compliance Test Plan (CTP) are
posted at the DCI compliance web site. Notably, DCI compliance does not require compliance to the full set of
SMPTE DCP standards. A copy of the most recent DCI specification can be downloaded from the DCI website
(
http://dcimovies.com ).
Digital Cinema Package (DCP)
A Digital Cinema Package (DCP) is a collection of digital files used to store and convey Digital Cinema (DC)
audio, image, and data streams. The term has been defined by Digital Cinema Initiatives (DCI). General
practice adopts a file structure that is organized into a number of usually multi-gigabyte size Material
eXchange Format (MXF) files, which are separately used to store audio and video streams, and auxiliary
index files in XML format. The MXF files contain streams that are compressed, encoded, and encrypted, in
order to reduce the huge amount of required storage and to protect from unauthorized use. The image part is
JPEG 2000 compressed, whereas the audio part is linear PCM. The adopted (optional) encryption standard is
AES 128 bit in CBC mode. The newer SMPTE standards are used to conform the recommendations among
different tool vendors and producers. Interop, the legacy DCP standard, is still required to be supported by
DCP players.
HD
Hazard Distance (HD) is the distance measured from the projection lens at which the intensity or the energy
per surface unit becomes lower than the applicable exposure limit on the cornea or on the skin. The light beam
is considered (to be) unsafe for exposure if the distance from a person to the light source is less than the HD.
Key Delivery Message (KDM)
The security key for each movie is delivered in a unique KDM for each digital cinema server. The security key
is encrypted within the KDM, which means that the delivery of a KDM to the wrong server or wrong location
will not work, and thus such errors cannot compromise the security of the movie. The KDM is a small file, and
is typically emailed to the exhibitor. To create the correct set of KDMs for a site requires knowledge of the
digital certificate in the projection system´s media block.
*.pem
Privacy-enhanced Electronic Mail. File format used to distribute digital signed certificates. Base64 encoded
DER
certificate, enclosed between "———BEGIN CERTIFICATE———" and "———END
CERTIFICATE———"
Glossary