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    • 3. 发明授权
    • System and method for intra-package delta compression of data
    • 用于数据包内增量压缩的系统和方法
    • US07600225B2
    • 2009-10-06
    • US10633375
    • 2003-07-21
    • Michael SligerThomas McGuireManojkumar ShendeAlexander Petrov
    • Michael SligerThomas McGuireManojkumar ShendeAlexander Petrov
    • G06F9/44G06F9/445G06F12/00G06F17/00
    • G06F8/658Y10S707/99953Y10S707/99955
    • A system and method for providing file data, such as a set of files for updating a computer system, in a self-contained package, in which the package size is significantly reduced via delta compression. A build mechanism examines files to be distributed, and generates a self-contained package containing files and deltas. To this end, a directed graph is built from the sizes of the various base file and delta file possibilities, and a minimum spanning tree computation selects the files that result in the smallest package. A base file may have multiple deltas applied to synthesize multiple files, and any base file may itself have been previously synthesized from another base file and a delta. A client extraction mechanism, optionally provided with the package, works with the contents of the package as directed by a manifest to synthesize target files from the base files and the contained deltas.
    • 一种用于在自包含的包中提供诸如用于更新计算机系统的一组文件的文件数据的系统和方法,其中通过增量压缩显着地减小了包的大小。 构建机制检查要分发的文件,并生成包含文件和三角形的自包含包。 为此,有向图是根据各种基本文件和增量文件的可能性的大小构建的,最小生成树计算选择导致最小包的文件。 基本文件可能具有多个三角形,用于合成多个文件,并且任何基本文件本身可能先前已经从另一个基本文件和增量进行合成。 可选地提供包的客户机提取机制根据清单的指示对包的内容进行处理,以从基本文件和包含的三角形合成目标文件。
    • 4. 发明申请
    • System and method for intra-package delta compression of data
    • 用于数据包内增量压缩的系统和方法
    • US20050022175A1
    • 2005-01-27
    • US10633375
    • 2003-07-21
    • Michael SligerThomas McGuireManojkumar ShendeAlexander Petrov
    • Michael SligerThomas McGuireManojkumar ShendeAlexander Petrov
    • G06F9/44G06F9/06G06F9/445G06F12/00
    • G06F8/658Y10S707/99953Y10S707/99955
    • A system and method for providing file data, such as a set of files for updating a computer system, in a self-contained package, in which the package size is significantly reduced via delta compression. A build mechanism examines files to be distributed, and generates a self-contained package containing files and deltas. To this end, a directed graph is built from the sizes of the various base file and delta file possibilities, and a minimum spanning tree computation selects the files that result in the smallest package. A base file may have multiple deltas applied to synthesize multiple files, and any base file may itself have been previously synthesized from another base file and a delta. A client extraction mechanism, optionally provided with the package, works with the contents of the package as directed by a manifest to synthesize target files from the base files and the contained deltas.
    • 一种用于在自包含的包中提供诸如用于更新计算机系统的一组文件的文件数据的系统和方法,其中通过增量压缩显着地减小了包的大小。 构建机制检查要分发的文件,并生成包含文件和三角形的自包含包。 为此,有向图是根据各种基本文件和增量文件的可能性的大小构建的,最小生成树计算选择导致最小包的文件。 基本文件可能具有多个三角形,用于合成多个文件,并且任何基本文件本身可能先前已经从另一个基本文件和增量进行合成。 可选地提供包的客户机提取机制根据清单的指示对包的内容进行处理,以从基本文件和包含的三角形合成目标文件。
    • 6. 发明申请
    • DELTA COMPRESSION USING MULTIPLE POINTERS
    • 使用多个点进行DELTA压缩
    • US20110067019A1
    • 2011-03-17
    • US12948603
    • 2010-11-17
    • Alexander PetrovThomas McGuireMichael Sliger
    • Alexander PetrovThomas McGuireMichael Sliger
    • G06F9/44
    • G06F8/65G06F8/658G06F17/30312
    • Encoding a new version of a data module includes constructing a delta data module having data for providing the new version of the data module. The delta data module may indicate an encoding for copying data at an offset from one of a number of pointers into different versions of the data module. Decoding a delta data module to provide a new version of a data module includes copying, to the new version of the data module, data relative to a target pointer when an encoding in the delta data module indicates a matching pattern relative to the target pointer, and copying, to the new version of the data module, data relative to at least one other pointer when an encoding in the delta data module indicates a matching pattern relative to the at least one other pointer.
    • 编码数据模块的新版本包括构建具有用于提供数据模块的新版本的数据的增量数据模块。 增量数据模块可以指示用于将多个指针之一的偏移量的数据复制到数据模块的不同版本中的编码。 增量数据模块解码以提供新版本的数据模块包括:当增量数据模块中的编码指示相对于目标指针的匹配模式时,向数据模块的新版本复制相对于目标指针的数据, 以及当所述增量数据模块中的编码指示相对于所述至少一个其他指针的匹配模式时,将数据相对于至少一个其他指针复制到所述新版本的数据模块。
    • 10. 发明申请
    • Delta compression using multiple pointers
    • 增量压缩使用多个指针
    • US20070300206A1
    • 2007-12-27
    • US11472714
    • 2006-06-22
    • Alexander PetrovThomas McGuireMichael Sliger
    • Alexander PetrovThomas McGuireMichael Sliger
    • G06F9/44
    • G06F8/65G06F8/658G06F17/30312
    • Encoding a new version of a data module includes constructing a delta data module having data for providing the new version of the data module. The delta data module may indicate an encoding for copying data at an offset from one of a number of pointers into different versions of the data module. Decoding a delta data module to provide a new version of a data module includes copying, to the new version of the data module, data relative to a target pointer when an encoding in the delta data module indicates a matching pattern relative to the target pointer, and copying, to the new version of the data module, data relative to at least one other pointer when an encoding in the delta data module indicates a matching pattern relative to the at least one other pointer.
    • 编码数据模块的新版本包括构建具有用于提供数据模块的新版本的数据的增量数据模块。 增量数据模块可以指示用于将多个指针之一的偏移量的数据复制到数据模块的不同版本中的编码。 增量数据模块解码以提供新版本的数据模块包括:当增量数据模块中的编码指示相对于目标指针的匹配模式时,向数据模块的新版本复制相对于目标指针的数据, 以及当所述增量数据模块中的编码指示相对于所述至少一个其他指针的匹配模式时,将数据相对于至少一个其他指针复制到所述新版本的数据模块。