Term

audio-visual work

Posted on April 1, 2015 in

A sequence of related images, with or without accompanying sound, which is intended to be made visible as a moving image through the use of devices, regardless of the medium of initial or subsequent fixation.

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audio-visual event

Posted on April 1, 2015 in

An event where elementary streams are all of type video or audio.

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audio block

Posted on April 1, 2015 in

A set of 512 audio samples consisting of 256 samples of the preceding audio block, and 256 new time samples. A new audio block occurs every 256 audio samples. Each audio sample is represented in two audio blocks.

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attribute

Posted on April 1, 2015 in

A qualifier on an XML tag that provides additional information.

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ATSC transport

Posted on April 1, 2015 in

The ATSC MPEG-2 Transport Stream as defined in ATSC A/53, Part 3.

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ATSC Professional Integrated Receiver/Decoder

Posted on April 1, 2015 in

A device employed in a broadcast station, MVPD headend or similar professional location, which has the capability to produce NTSC or SDI video, with associated audio and data, from all ATSC standard formats.

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asynchronous trigger

Posted on April 1, 2015 in

A structure transmitted within an MPEG-2 transport stream containing a reference to a target and some opaque user data bytes which may also include a reference to an application that is intended to process it.

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asynchronous transfer mode

Posted on April 1, 2015 in

A digital signal protocol for efficient transport of both constant-rate and bursty information in broadband digital networks. The ATM digital stream consists of fixed-length packets called “cells,” each containing 53 8-bit bytes—a 5-byte header and a 48-byte information payload.

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asynchronous data

Posted on April 1, 2015 in

Stand-alone or audio/video-related data transmitted with no strong timing requirements in the sense that it is not associated with any transmitted clock references and availability of data in a data receiver is not governed by any such clock references.

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ARM data application

Posted on April 1, 2015 in

A data application as defined by ATSC A/94.

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