ISO/IEC 21000-20
Information technology - Multimedia framework (MPEG-21) - Part 20: Contract Expression Language
| Organization: | ISO |
| Publication Date: | 1 July 2013 |
| Status: | inactive |
| Page Count: | 58 |
| ICS Code (Information coding): | 35.040 |
scope:
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.
The range of contracts under scope are:
- contracts about transactions of content as MPEG-21 Digital Items;
- contracts about the provision of MPEG-21-based services, i.e. delivery, identification, encryption and search.
The aspects represented by CEL contracts include:
- the textual clauses, in natural language as they are in the narrative contract, duly structured;
- the operative clauses, as computer language expressions.
Document History
