ISO/IEC 21000-20-2013 信息技术.多媒体框架(MPEG-21).第20部分:合同表达式语言

标准号：ISO/IEC 21000-20-2013
中文标准名称：信息技术.多媒体框架(MPEG-21).第20部分:合同表达式语言
英文标准名称：Information technology.Multimedia framework (MPEG-21).Part 20: Contract Expression Language
标准类型：L74
发布日期：2013/7/1 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L74
国际标准分类号：35.040
引用标准：ISO 3166-1;ISO 15836;ISO/IEC 21000-3;ISO/IEC 21000-5;ISO/IEC 21000-21;IETF RFC 2141;IETF RFC 2396
适用范围：This part of ISO/IEC 21000 specifies a language for representing contracts in the Multimedia Framework formed for the transaction of MPEG-21 Digital Items or services related to the MPEG-21 Framework.The Contract Expression Language (CEL) aims at digitally representing the agreements made in an environment of ISO/IEC 21000 use. These contracts include those about both transactions of content packed as Digital Items as well as services provided around this content.