信息技术.多媒体服务平台技术.第4部分:基本服务

[中文适用范围]： ISO/IEC 23006 的这一部分规定了一组基本服务和协议，使分布式应用程序能够交换与内容项及其部分相关的信息，包括对 MPEG 相关实体（内容、合同、设备、事件、许可证、服务和用户）的所有必要操作。这些操作定义如下：身份验证、授权、检查、创建、交付、描述、识别、安装、交互、协商、打包、发布、呈现、处理、请求、撤销、搜索、存储、交易、卸载和验证。基本服务可以按照明确定义的序列组合以构建聚合服务，它们统称为多媒体服务。本文将 ISO/IEC 23006（所有部分）简称为 MPEG-M。多媒体服务由 MSPT 生态系统中的多媒体设备提供和使用，例如高级 IPTV 终端。 [外文原描述]： ISO/IEC 23006-4:2013 specifies a set of Elementary Services and protocols enabling distributed applications to exchange information related to content items and parts thereof, including all the necessary Operations on MPEG-related Entities: Content, Contract, Device, Event, License, Service and User. These operations are defined to be the following: Authenticate, Authorize, Check With, Create, Deliver, Describe, Identify, Install, Interact With, Negotiate, Package, Post, Present, Process, Request, Revoke, Search, Store, Transact, Uninstall and Verify. Elementary Services can be combined in well defined sequences to build Aggregated Services, both of them being called in general Multimedia Services. ISO/IEC 23006 (all parts) will be referred to as MPEG-M for short in the text. The Multimedia Services are provided by and consumed by Multimedia Devices in a MSPT ecosystem, an example of which is the Advanced IPTV Terminal.