GPI
For digital cinema servers, an interface that is used to trigger an internal input (or pulse) to
a digital cinema server.
GPIO
General purpose input/output. Generic, user-configurable pins that are used to control
automation devices.
GPO
For digital cinema servers, an interface that is used for macro automation output and is
controlled from the user interface on a digital cinema server.
H.264
Also known as Advanced Video Coding (AVC), ISO/IEC MPEG
‑
4 AVC, and ISO/IEC 14496–
10:2012. An MPEG standard for video compression most commonly used for high-definition
video, such as Blu
‑
ray Disc. The standard was developed jointly by the International
Telecommunication Union (ITU) and ISO/IEC MPEG.
HDCP
High-bandwidth Digital Content Protection. A method of digital encryption developed by
Intel that is designed to prevent copying of audio and video data traveling across HDMI,
DisplayPort, Digital Visual Interface (DVI), and other types of digital connections.
HDD
Hard disk drive.
HDMI
High-Definition Multimedia Interface. A high-speed, high-capacity format for transferring
digital information and the specific hardware interface for the format.
IMB
Integrated media block. A media block that is installed in a digital cinema projector.
intermission playlist
A playlist contained within a show playlist (SPL) that pauses playback during an
intermission between parts of a feature film.
IP
Internet Protocol.
IP address
Internet Protocol address. A numerical identifier assigned to a device that is a member of a
network that uses the IP for communication.
JPEG
Joint Photographic Experts Group. An International Organization for Standardization (ISO)/
International Electrotechnical Commission (IEC) working group that develops still image
coding standards. May also refer to a digital image format for lossy compression.
KDM
Key Delivery Message. An XML file that is used to provide decryption keys for a specific
composition playlist (CPL) containing encrypted content. A KDM also specifies the time
window during which the keys remain valid, as well as trusted equipment information to
ensure that the CPL playback is possible only on authorized equipment and for an approved
period of time.
Glossary
Dolby IMS3000 User
ʼ
s Manual
10 December 2018 IMS.OM.005280.DRM Issue 4
132