Total number of active horizontal pixels in the image container.
Total number of active vertical pixels in the image container.
An alpha channel overlay module, to key subtitles or open captions into the Main Image, can be located in the projector or in the Media Block.
Alternative content cinema refers to the use of cinema theaters to display a varied range of live and recorded entertainment excluding traditional films, such as sport, opera, musicals, ballet, music, one-off TV specials, current affairs, comedy and religious services.
ANSI is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States.
API is a set of subroutine definitions, protocols, and tools for building application software.
The Audio Engineering Society develops, reviews and publishes engineering standards for the audio and related media industries, and produces the AES Conventions, which are held twice a year alternating between Europe and the US.
The Audio System delivers the sound of the theatrical presentation to the audience.
The Audio System requires several interfaces. The main interface deals with the digital audio and the other interfaces deal with status and control.
An Audio Track File contains the audio essence data and its associated metadata.
Current day control systems, usually called automation systems, orchestrate theater sub-systems such as curtains, masking and lights.
Nonstandard essence for a specific use case.
The Basic Encoding Rules were the original rules laid out by the ASN.1 standard for encoding abstract information into a concrete data stream. The rules, collectively referred to as a transfer syntax in ASN.1 parlance, specify the exact octet sequences which are used to encode a given data item.
Channel mapping defines where the individual audio channels are assigned and the labeling of channels in a Digital Cinema audio system.
In CBC mode, each block of plaintext is XORed with the previous ciphertext block before being encrypted. This way, each ciphertext block depends on all plaintext blocks processed up to that point. To make each message unique, an initialization vector must be used in the first block.
A stream of code.
Describes the coding style, number of decomposition levels, and layering used for compressing a particular component.
Describes the coding style, number of decomposition levels, and layering that is the default used for compressing all components of an image (if in the main header) or a tile (if in the tile-part header). The parameter values can be overriden for an individual component by a COC marker sement either the main or tile-part header.
The method for color conversion.
Component Position Resolution Layer
Image Compression for Digital Cinema uses data reduction techniques to decrease the size of the data for economical delivery and storage.
Constant bit rate encoding means that the rate at which a codec's output data should be consumed is constant.
The digital representation of a visual, audio or subtitled program.
A Critical Security Parameter is information that is either user or system defined and is used to operate a cryptography module in processing encryption functions including cryptographic keys and authentication data, such as passwords, the disclosure or modification of which can compromise the security of a cryptographic module or the security of the information protected by the module.
A symmetric-key algorithm for the encryption of electronic data.
The audience for captioning.
A Decoder is the combination of logic circuit which converts an N Bit binary input code into M output code such that each output line will be activated for only one of the possible combinations of the input.
At the projector, a Link Decryptor Block is required to decrypt the image essence.
Descriptive metadata is a type of metadata that describes a resource for purposes such as discovery and identification such as creator, title, and subject.
Digital Cinema Initiatives, LLC (DCI) is the entity created by seven motion picture studios: Disney, Fox, Metro-Goldwyn-Mayer, Paramount Pictures, Sony Pictures Entertainment, Universal Studios, and Warner Bros. Studios. The primary purpose of DCI is to establish uniform specifications for Digital Cinema.
DRM establishes the rules for using content.
DER is a restricted variant of BER for producing unequivocal transfer syntax for data structures described by ASN.1.DER encodings are valid BER encodings. DER is the same thing as BER with all but one sender's options removed.
A set of security devices (including one Security Manager) that collectively support playback for a single auditorium.
One-way information packet that passes into or out of, the exhibition facility. The ETM is a generic message container.
Federal Information Processing Standards (FIPS) are publicly announced standards developed by the United States federal government for use in computer systems by non-military government agencies and government contractors.
Digital Cinema system is built upon a data file-based design, i.e., all of the content is made up of data stored in files. These files are organized around the image frames. The file is the most basic component of the system.
The integer number of frames in a sequence.
Frame rate, (expressed in frames per second or FPS) is the frequency (rate) at which consecutive images called frames are to be projected or displayed in an animated display.
The rate that images are to be projected, expressed in frames per second.
A generic pin on an integrated circuit or computer board whose behavior—including whether it is an input or output pin—is controllable by the user at run time.
A type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, instead of text-based user interfaces, typed command labels or text navigation.
A specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key.
The DCDM shall use a hierarchical image structure that supports both 2K and 4K resolution files so that studios can choose to deliver either 2K or 4K masters and both 2K and 4K projectors can be deployed and supported.
A human visual system model (HVS model) is used by image processing, video processing and computer vision experts to deal with biological and psychological processes that are not yet fully understood.
Link encryption to the projection system to protect image essence.
The Image Media Block (IMB) is a type of Secure Processing Block (SPB) that shall contain a Security Manager (SM), Image, Audio and Subtitle Media Decryptors (MD), image decoder, Image and Audio Forensic Marking (FM) and optionally Link Encryptor (LE) functions.
Image Track File contains the image essence data and its associated metadata.
Ingest is the process of receiving content and security information at the theater level.
Intellectual property (IP) refers to creations of the intellect for which a monopoly is assigned to designated owners by law.
The international authority on light, illumination, colour, and colour spaces.
A non-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology".
An international standard-setting body composed of representatives from various national standards organizations.
A unique identifier for audiovisual works and related versions.
A department of ICANN, a nonprofit private American corporation that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System (DNS), media types, and other Internet Protocol-related symbols and Internet numbers.
It develops and promotes voluntary Internet standards, in particular the standards that comprise the Internet protocol suite (TCP/IP). It is an open standards organization, with no formal membership or membership requirements. All participants and managers are volunteers, though their work is usually funded by their employers or sponsors.
The data packet that passes between security devices assigned to a single auditorium. ITM(s) operate on two-way channels.
Material eXchange Format (MXF) is a container format for professional digital video and audio media defined by a set of SMPTE standards. MXF is used as the audio and video packaging format for Digital Cinema Package (DCP).
Mean time between failures (MTBF) is the predicted elapsed time between inherent failures of a system during operation. MTBF can be calculated as the arithmetic mean (average) time between failures of a system.
The Media Block is required to interface on three levels with the rest of the system. One level deals with the packaged Digital Cinema content. The next level is the raw essence output for the projector, the audio processor and any special devices for the automation system. The third level is the control and status of the Media Block playback system.
When the Media Block is implemented as a component within the projection system.
When the storage and the Media Block are closely coupled.
The Media Network is a high bandwidth, switched interface, made up of media interfaces, Disc Arrays and Media Blocks.
Multiplex Theater System Architecture consists of two main interface components. The first is the Media Network and the second is the Theater Management Network.
Packaging is a way to organize and wrap DCDM's files in such a way as to make it suitable for storage and transmission to its destination, where it can be stored and then easily unwrapped for a coherent playback.
The Projection System is required to change digital image data into the light that appears on the screen.
The Projection System not only provides the main image on the screen, it can provide subtitles, open captioning, and still pictures. This requires extra interfaces from the Media Block, if the Media Block is not installed in the projector.
Projection systems will likely have many input/output interfaces to support the various signals that are required to send and receive data between projector, Media Block (MB) and Screen Management System (SMS).
A Reference Projector is used in the mastering process for creating the Digital Cinema Distribution Master (DCDM), with the target performance parameters and tolerances.
A remote Media Block is a remote SPB that contains other types of MDs, such as those used for audio or subtitles, but does not contain an SM. Remote Media Blocks shall not be used in DCI compliant systems.
Describes a single interaction between the SEs. At least one RRP is required to implement a transaction.
The generic term used to describe the party having authority over content to negotiate terms of engagements (e.g., a studio or distributor).
A Screen Automation System can interface with life safety, motor controlled curtains, motor controlled masking, the dimmers for the lighting, existing 35mm film projectors and possibly to other devices such as the Cinema Audio Processor, and/or special effects devices.
The SPB is defined as a container that has a specified physical perimeter, within which one or more security entity (SE) and/or other plaintext processing functions are placed (e.g., decryptor, decoder, Forensic Marker).
Digital Cinema security is to enable the decryption and playback of feature films, based upon business rules agreed upon by Exhibition and Distribution, to provide persistent security protection against unauthorized access, copying, editing, or playback of feature films; to provide records of security-related events, to define an open security architecture; to provide a minimum set of standards around which the exhibition security infrastructure can be implemented by multiple equipment suppliers.
A logical processing device which executes a distinct security process or function. SEs are not distinguished from other theater equipment by being physically secure, but by the specific security function that they perform.
There are two classes of messages in the architecture: Extra-theater Messages (ETM) and Intra-theater Message (ITM).
Digital Cinema Security System provides content protection and piracy prevention, single inventory and interoperability, reliability, supports forensics and attack detection, resists threats.
TCP/IP is required to be the protocol to send commands and configuration. SNMP/UDP/IP (Simple Network Management Protocol over User Datagram Protocol over Internet Protocol) can be used for status of the equipment.
Splicing allows the assembly of a continuous data stream from multiple Track Files.
These messages are used between the Image Media Block and remote SPBs, with the IMB as the Requestor (RRP initiator). The security data and related information that is the subject of these messages shall be communicated only via standardized security messages.
Storage is the file server that holds the packaged content for eventual playback.
Usable storage per screen that is required for the central and/or local storage system.
Digital Cinema system uses a Store-and-forward Method for Distribution. This allows the files to be managed, processed and transported in non-real time.
The subpicture renderer, a module that converts the subpicture file into the DCDM* image file with an alpha channel overlay, can be located in the projector or the Media Block.
A Subtitle Track File contains, for example, the Subtitling essence data and its associated metadata. Each Subtitle Track File may contain any combination of text, font references, and image references.
The Theater Management Network is a low bandwidth, shared interface, made up of Theater System devices and an Ethernet distribution system.
Theater Systems for Digital Cinema incorporates all of the equipment required to make a theatrical presentation within an auditorium located within a Theater complex. This encompasses projectors, Media Blocks, Security Managers, storage, sound systems, DCP ingest, theater automation, Screen Management System (SMS) and Theater Management System (TMS).
The Timed Text renderer, a module that converts Timed Text data into the image file with an alpha channel overlay, can be located in the projector or the Media Block.
Describe the interactions between exhibition components (Security Entities) and the system state changes that occur as a result of the transaction.
The Internet protocol suite is the conceptual model and set of communications protocols used on the Internet and similar computer networks. It is commonly known as TCP/IP because the original protocols in the suite are the Transmission Control Protocol (TCP) and the Internet Protocol (IP).
Transport refers to the movement of the packaged Digital Cinema content. This can be accomplished in many ways, such as physical media, Virtual Private Network (VPN), or satellite.
А readily available and well known protocol standard for providing protection between application layer processes that must communicate between devices, in this case between auditorium devices (Secure Processing Blocks) performing security functions.
A universally unique identifier (UUID) is a 128-bit number used to identify information in computer systems. Microsoft uses the term globally unique identifier (GUID), either as a synonym for UUID or to refer to a particular UUID variant.
Removing from a package.
Tristimulus values defined by CIE in 1931 to represent colors. Prime indicates gamma corrected coordinates.
In computing, a Uniform Resource Name (URN) is the historical name for a Uniform Resource Identifier (URI) that uses the urn scheme. A URI is a string of characters used to identify a name of a web resource. Such identification enables interaction with representations of the web resource over a network, typically the World Wide Web, using specific protocols.
AES3 (also known as AES/EBU) is a standard for the exchange of digital audio signals between professional audio devices.
Active Horizontal Pixels
Набор цифровых файлов, используемых для хранения и передачи аудио, изображений и потоков данных цифрового кино.
Международный орган стандартизации, состоящий из представителей организаций по стандартизации различных стран.