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    • 2. 发明授权
    • System and method for enabling parallel access to serially compressed files
    • 允许并行访问串行压缩文件的系统和方法
    • US07756817B2
    • 2010-07-13
    • US11773663
    • 2007-07-05
    • Ambikeshwar Raj MerchiaDonovan SchneiderVenkatesan RamachandranSunil Nagaraj
    • Ambikeshwar Raj MerchiaDonovan SchneiderVenkatesan RamachandranSunil Nagaraj
    • G06F17/00
    • H03M7/30Y10S707/99943
    • The present invention is directed towards systems and methods for generating a compressed data file providing access to one or more selected portions of data contained within the data file. The file is partitioned into one or more chunks, a given chunk comprising a separate unit of data representing a subset of data from the file. The one or more chunks are compressed through use of a compression algorithm, and the one or more chunks are combined to form a compressed file. Metadata is also generated that indicates a chunk offset of a given chunk, thereby allowing direct parallel access to one or more given chunks. Similarly, legacy applications may ignore the chunk structure in the compressed file and access the file according to techniques know in the art, thereby preserving backwards compatibility with such legacy applications.
    • 本发明涉及用于生成压缩数据文件的系统和方法,该压缩数据文件提供对包含在该数据文件内的数据的一个或多个所选部分的访问。 该文件被分成一个或多个块,给定的块包括表示来自该文件的数据子集的单独数据单元。 通过使用压缩算法压缩一个或多个块,并且组合一个或多个块以形成压缩文件。 还生成指示给定块的块偏移的元数据,从而允许直接并行访问一个或多个给定的块。 类似地,遗留应用可以忽略压缩文件中的块结构,并且根据本领域已知的技术来访问该文件,由此保留与这种传统应用的向后兼容性。