ATSC Compiled Terms

The following table catalogs the definitions of terms used in ATSC standards, recommended practices, and informational documents. For each entry, the source document is listed along with the definition given in the document. The definitions given herein represent the definition contained in the referenced document. Entry Source Definition ACAP application 101 An application that is written only to the interfaces andsemantic guarantees defined in ACAP. A suitably ACAP terminal 101 A terminal or other device that conforms to an ACAP Terminal Specification. ACAP terminal specification 101 An ACAP terminal specification is a specification that includes all normative and selected optional eleme access unit 53, 54 A coded representation of a presentation unit. In the case of audio, an access unit is the coded represen action 93 A trigger semantic that implies some behavior on the receiver without any associated data item. The process of enabling the target referenced by a trigger which may cause rendering. For a trigger refe activation time 93 The System Time Clock instant at which the target of a trigger is activated. active object content 100 A category of content types which includes both application/java and application/javatv-xlet content types aligned 95 A bit in a coded bit stream is byte-aligned if its position is a multiple of 8-bits from the first bit in the strea 3 / 128