ATA e-Business Program Change Requests

1) Introduction of a new model for the “non-graphic” companion file (“medcmp.dtd” proposal provided in attachment).

The proposed solution defines a generic DTD, thus avoiding the necessity to define branches for all possible metadata types that could be applicable to the different media files format.

This generic solution is consistent with the 2D graphics companion file content model (“v4sheet.dtd”), allows coverage of all current known metadata requirements and is extensible to cater

to future requirements without DTD/model updates.

The “non-graphic” companion file model proposal, is organized in 3 main branches, providing 3 types of metadata:

• “mediaMetadataList” element = Metadata associated to the media file itself

• Management information (authors, property rights, etc.)

• Technical information (format, language, size, source data info, etc.)

• Description,

• Keywords (e.g. for retrieval purpose)

• …

Markup sample

<mediaMetadataList>

  <mediaMeta type="MEDIATYPE" value="WRL"></mediaMeta>

  <mediaMeta type="UNIT" value="m"></mediaMeta>

</mediaMetadataList>

• “mediaObjectsList” element = media’s “objects” that are accessible in the media file content and associated metadata or parameters

• e.g. items, views, parts for 3D media ,

• …

Markup sample

<mediaObjectsList objnbr="1">

  <mediaObject id="id_o00001" objident="id_d1e99" objtype=”part”>

    <objectMeta type="ITEMNBR" value="010"></objectMeta>

    <objectParam type="BEHAVIOR" value="0">

  </mediaObject>

</mediaObjectsList>

• “mediaObjectsGroups” element = grouping of individual “objects” declared in the second branch and associated metadata

• Allows to define business or technical packaging of media’s objects

2) New notation for entity management of media companion file

Markup sample

 <!NOTATION mcp       PUBLIC

    "-//ATA-TEXT//NOTATION Media Companion File//EN"            >

3) New folder and file extension for data exchange, dedicated to media companion files

New “MCP” directory containing all the media companion files (*.MCP) and the Media Companion File DTD (MEDCMP.DTD).

Note: Anchoring and Referencing mechanism: A new element (e.g. “media”) is required to support the anchoring of media files and their associated companion file in the content model

of the ATA SGML technical data manuals DTDs (e.g. amm, ipc, srm, etc.). This change is not supported by the current change request and will be subject to a separate change request.0

Refer to CR-2022-27 (rev01) for an implementation use case sample, requesting for 3D interactive illustration support in IPC manual.

Markup sample

<!ELEMENT media - -  (title? | deleted)                     >

<!ATTLIST media

       mednbr     ENTITY                   #REQUIRED

       mcpnbr     ENTITY                   #IMPLIED

       medtype    (MP3|MPEG|PDF|VRML)          #IMPLIED

          %revatt;                                                  >