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Abstract -- Interchange of Structured Multimedia Documents Containing External Information
A1: Information Space Environments
Interchange of Structured Multimedia Documents Containing External Information
- Acebron, Jose Jesus
- Delgado, Jaime
The coexistence of many multimedia document handling applications, different proprietary storage and
interchange formats, and the great variety of content types included in documents, decreases the
capability of interchange of multimedia documents between different systems not using the same
proprietary document applications and formats.
Many multimedia documents contain information generated by other applications, such as CAD designs,
simulation results, etc. There is a need for a mechanism which allows this information to be included in
multimedia documents and facilitates further interchange. This paper proposes a solution to allow the
interchange of multimedia documents (MMD) containing external application information. The
mechanism proposed is a general interface which results from the study of the interaction between
multimedia document structure and document content in the document interchange and handling
This paper describes a mechanism that allows the open interchange of structured MMDs containing
external application information. This mechanism must consider the three following aspects:
2) PRE-INTERCHANGE PROCESSING OF THE MMD
- pre-interchange processing of the MMD;
- interchange of the MMD;
- post-interchange processing of the MMD.
The MMD must be processed to include the external information into the document. Some examples of
this kind of processing are:
A description of the advantages of "information inclusion" versus "information conversion" is provided in
- testing of the external information (for example, verification of a spreadsheet before its inclusion into
- resolution of (external or internal) references;
- inclusion of the external information into the MMD.
For the inclusion of external information into MMDs, a generalized interface is proposed, which
provides the functionality for the inter-operation between the document structure and the document
content. This interface is the generalization of the interaction between document structure and document
content. Complex multimedia documents consist of a document structure and a document content. The
document structure may be more or less complex depending of the type of document. The content of
the document may be simple, such as text, and complex, such as video. A more detailed description of
this interface is provided in the paper.
3) INTERCHANGE OF THE MMD
For the interchange of the MMD, the following points are to be considered:
The generalized interface can be extended to provide the functionality for the generation of:
- Interchange format: an interchangeable version of the document is to be generated.
- Alternative representation: the MMDs may also contain an alternative representation of the external
application information. This alternative representation should be a simple (more compatible) format that
allows other recipients, that do not have this application, to process the multimedia document. For
example, the alternative representation of a CAD design may be a raster picture. Using this alternative
representation, a minimum of information is guaranteed to any recipient.
- Security: some parts may be removed for security reasons before interchange. Other parts may be
The paper provides a description of these points.
- the interchangeable version of the application information;
- the alternative representation of the application information.
4) POST-INTERCHANGE PROCESSING OF THE MMD
The recipient of the document can process it, performing the following steps:
- conversion from the interchangeable format of the MMD to any other format;
- access to protected parts (de-enciphering);
- analysis of the external information types included: if the recipient of the document cannot process an
information type included in the document, the alternative representation may be used for further