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公开(公告)号:US20030026596A1
公开(公告)日:2003-02-06
申请号:US10177729
申请日:2002-06-20
发明人: Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
IPC分类号: H03M013/00 , H04N007/26
CPC分类号: H04N19/00266 , H04N19/157 , H04N19/172 , H04N19/61
摘要: A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.
摘要翻译: 特别是以MPEG格式存储并包括不同帧流的数据文件的方法包括基于存储在数据文件中的参数的数据文件的保护系统。 有利地,存储方法包括通过存储与其值被选择的相应不同帧相关联的参数来选择性地保护帧,以提供终端用户请求的播放质量等级。 此外,提供了一种用于对数据文件进行解码的方法,特别是MPEG类型的数据文件,并且包括不同帧的流程,其中数据文件存储在上面。