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2. 发明申请

US20140301716A1 CONTENT-BASED UNIQUE MATERIAL IDENTIFIERS 审中-公开
标题翻译：基于内容的独特材料标识符
公开(公告)号：US20140301716A1
公开(公告)日：2014-10-09
申请号：US13975654
申请日：2013-08-26
申请人： AVID TECHNOLOGY, INC.
发明人： Donald A. Carignan , Scott E. Kohnle
IPC分类号： G11B27/30
CPC分类号： G11B27/3027
摘要： A unique material identifier (UMID) for a media file that was not provided with a UMID at its point of origination is generated by using the content of the file, and is independent of the time of file import or accessing. For a given item of media material, the UMID remains unchanged and uniquely identifies the item when such a file is imported or accessed multiple times. The UMID may be generated by hashing together selected portions of the metadata and essence of the media file. The amount of metadata and essence sampled is chosen to provide a high degree of assurance that the UMID will be unique, but is kept small enough so as to avoid causing a perceptible lag when the UMID is generated. In various embodiments the UMID is based purely on one or more selected portions of the media file essence.
摘要翻译：通过使用文件内容生成未提供UMID的媒体文件的唯一素材标识符（UMID），并且与文件导入或访问时间无关。对于给定的媒体材料，UMID保持不变，并在导入或访问多个文件时唯一标识该项目。 UMID可以通过将元数据的所选部分和媒体文件的本质组合在一起来生成。所选择的元数据和实质的量被选择以提供高度的保证，UMID将是唯一的，但是保持足够小以避免在生成UMID时引起可察觉的滞后。在各种实施例中，UMID纯粹基于媒体文件本质的一个或多个所选部分。

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