OIPF 规范翻译（DAE）-----4

4 DAE overview  DAE 概述
This specification builds on the capability model defined in CEA-2014[CEA-2014-A] in order to expose to an IPTV service provider the capabilities of any particular OITF.

In addition to what is defined in CEA-2014, other terminal capabilities are defined in section 9.3 covering most of the features defined in this specification. This document does not define whether these capabilities are mandatory or not. Other documents or specifications need to address that. A small minimum set of capabilities are defined in section 9.2 "Default UI profiles".

Section 3.1 of this document defines how to interpret [RFC2119] terms like "SHALL" in sections of this document included in a capability. In sections of this document which are not covered by capabilities, terms like "SHALL" apply as used in each section.

 

 

此规范建立在CEA-2014[CEA-2014-A]中定义的能力模型之上，用来将任何特定OITF功能集开放给IPTV服务提供商。

除CEA-2014定义的之外，规范中大部分的功能在9.3节中定义，其中涵盖了其它所有的终端能力功能定义。此文档不定义这些功能（能力集）是否强制实现。其它文档或规范需要解决此问题。最小功能集合在9.2节（Default UI profiles默认用户接口配置）中定义。

 

文中3.1节定义了如何解释RFC2119中的一些条目，如SHALL适合在各章节中出现。（不太会翻译）

【注意：RFC2119是专门用来讲诸如MUST,SHOULD,MAY BE等词含义的文档，估计此处就是强调一下】

 

4.1 Architecture of DAE

DAE的体系

 

This section will introduce the basic concepts in the architecture of the DAE specification and their relationships. [CEA-2014-A] is the baseline technology for the DAE. In particular the following requirements hold:

- The OITF SHALL support the i-Box model as defined in [CEA-2014-A] with the changes described in Annex B of this document, in particular all requirements for an i-Box remote UI client as defined in section 5.1.2 and sections 5.2 through 5.10 of CEA-2014-A (i.e. all Remote UI client requirements inside the subsections that are marked as either “Mandatory for every RUIC” or “Mandatory for i-Box” except where modified by Annex B of this document).
This also includes (through reference) Annexes C, F, G, H, I of [CEA-2014-A]. The OITF SHALL also support the
following features which are not mandatory for the i-box model.

o 5.6.1 Multicast notifications

o 5.7.1 Streamed A/V Content

o 5.7.3 Full-screen video

- The OITF MAY support the 2-box and/or 3-box models defined in [CEA-2014-A]. Note that by default the interface

with the AG and IG deviates from CEA-2014’s 2-box model and 3-box model. An overview of these differences is
given in Section 4.1.1.

- A mandatory requirement in CEA-2014-A remains mandatory for the OITF, and recommended and optional

requirements in CEA-2014-A remain recommended and optional for the OITF, unless explicitly specified differently
inside this DAE specification. A detailed description of these differences can be found in Annex B.

 

本节中将DAE体系的基本概念以及它们之间的关系。[CEA-2014-A] 是DAE的基础标准，详细描述如下：

-OITF需要支持CEA-2014-A规范中定义的i-Box模式，在此文档附录B中将会对某些变化进行描述，i-Box远程UI客户端的详细需求在CEA-2014-A的5.1.2节，5.2—5.10节中描述（例如：all Remote UI client requirements inside the subsections that are marked as either “Mandatory for every RUIC” or “Mandatory for i-Box” except where modified by Annex B of this document这一句估计需要看看CEA标准再说）。这些也包含在CEA-2014-A文档的附件C,F,G,I,H中。OITF也需要支持如下的在i-Box模型中没有定义的特征：

       ·5.6.1 Multicast notifications 多播通知？

       ·5.7.1 音视频流媒体内容

       ·5.7.3 全屏幕视频

-OITF可选支持CEA标准中定义的2-box，3-box模型.需要注意的是默认情况下，AG,IG接口与CEA中2，3-box 模型中定义的有所不同，在4.1.1节中将描述这些差异。

-CEA中的强制要求仍然作为OITF中的强制要求存在，同样的，推荐和可选支持也仍继承到OITF中，除非在DAE中明确说明的不同以外，在附录B中对这些差异进行了详细描述。