公开(公告)号：US07448022B1

公开(公告)日：2008-11-04

申请号：US10775383

申请日：2004-02-10

申请人： Prasad Ram ,  Arun Ramanujapuram ,  Robert Schuler

发明人： Prasad Ram ,  Arun Ramanujapuram ,  Robert Schuler

IPC分类号： G06F9/45

CPC分类号： G06F8/00 ,  G06F9/45504

摘要： A resource catalog system comprises a catalog organized as a set of metadata structures representing distributed system resources, language for resource invocation, and a query interpreter and optimizer. Query optimization includes dynamic functional composition by modeling resources according constraints and determining constraint-satisfaction to compose an execution plan. Query optimization may also include dynamic selection and scheduling of resources by combining a resource scheduling with adaptive feedback. The resources may comprise distributed software components, application programs, shell scripts, executables, and services. The resource catalog system accepts queries for operations on distributed resources through a declarative language or a procedural language. A query optimizer derives catalog operators from a query or elsewhere and accesses the system resources according to interpretation of the catalog operators. The optimizer also retrieves information concerning the location and/or physical interfaces of the system resources to fulfill the commands specified by the catalog operators.

摘要翻译： 资源目录系统包括组织为表示分布式系统资源的元数据结构集合，资源调用语言以及查询解释器和优化器的目录。 查询优化包括通过根据约束建模资源的动态功能组合，并确定约束满足来组成执行计划。 查询优化还可以包括资源调度与自适应反馈的动态选择和资源调度。 资源可以包括分布式软件组件，应用程序，shell脚本，可执行程序和服务。 资源目录系统通过声明语言或程序语言接受对分布式资源的操作的查询。 查询优化器从查询或其他地方派生目录运算符，并根据目录操作符的解释访问系统资源。 优化器还检索有关系统资源的位置和/或物理接口的信息，以满足目录操作员指定的命令。

公开(公告)号：US07068787B1

公开(公告)日：2006-06-27

申请号：US09534756

申请日：2000-03-24

申请人： Thanh T. Ta ,  Prasad Ram ,  Robert E. Schuler ,  Arun Ramanujapuram ,  Guillermo Lao ,  Xin Wang

发明人： Thanh T. Ta ,  Prasad Ram ,  Robert E. Schuler ,  Arun Ramanujapuram ,  Guillermo Lao ,  Xin Wang

IPC分类号： G06F7/167

CPC分类号： G06F21/10 ,  H04L9/3257 ,  H04L2209/56 ,  H04L2209/60

摘要： A digital work and a system context (or resource information or system resource) are polarized enabling trusted rendering or replay of the digital work without depolarization of the digital content. The digital work includes digital content and resource information. Resource information may include information used by a replay application to format or process the digital content. The digital work and system context are polarized using a polarization scheme which relies on a polarization seed to initialize and customize the polarization. Different types of polarization seeds may be used, including a random number, a user's system's state or characteristic and a dynamic state-based polarization seed based on a dynamic system state or characteristic.

摘要翻译： 数字作品和系统上下文（或资源信息或系统资源）被极化，使数字作品的可信呈现或重放无需数字内容的去极化。 数字作品包括数字内容和资源信息。 资源信息可以包括由重放应用程序用于格式化或处理数字内容的信息。 数字工作和系统环境使用偏振方案进行极化，偏振方案依靠极化种子来初始化和定制偏振。 可以使用不同类型的偏振种子，包括随机数，用户系统的状态或特征以及基于动态系统状态或特性的基于动态状态的偏振种子。

公开(公告)号：US06763464B2

公开(公告)日：2004-07-13

申请号：US10196953

申请日：2002-07-18

申请人： Xin Wang ,  Thanh T. Ta ,  Prasad Ram

发明人： Xin Wang ,  Thanh T. Ta ,  Prasad Ram

IPC分类号： G06F1216

CPC分类号： G06F21/6209 ,  G06F21/10 ,  G06F2221/0733 ,  G06F2221/0737 ,  G06F2221/0755 ,  G06F2221/2141 ,  G06F2221/2151

摘要： A system and method for the secure distribution of electronic documents reduces the likelihood of unauthorized reproduction and redistribution by either authorized or unauthorized recipients. A self-protecting document (SPD) contains an encrypted document as well as a secure set of permissions and the software necessary to process the document; full decryption of the document is performed as late as possible so as to minimize the possibility of intercepting the document before it has been fully rendered to screen or to paper.

摘要翻译： 用于安全分发电子文档的系统和方法减少了授权或未经授权的收件人未经授权的再现和再分配的可能性。 自我保护文档（SPD）包含加密文档以及一组安全的权限和处理文档所必需的软件; 文件的完全解密尽可能地执行，以便最小化在将文档完全呈现到屏幕或纸张之前拦截文档的可能性。

公开(公告)号：US06519700B1

公开(公告)日：2003-02-11

申请号：US09178529

申请日：1998-10-23

申请人： Prasad Ram ,  Thanh T. Ta ,  Xin Wang

发明人： Prasad Ram ,  Thanh T. Ta ,  Xin Wang

IPC分类号： C06F1216

CPC分类号： G06F21/6209 ,  G06F21/10 ,  G06F2221/0733 ,  G06F2221/0737 ,  G06F2221/0755 ,  G06F2221/2141 ,  G06F2221/2151

摘要： A system and method for the secure distribution of electronic documents reduces the likelihood of unauthorized reproduction and redistribution by either authorized or unauthorized recipients. A self-protecting document (SPD) contains an encrypted document as well as a secure set of permissions and the software necessary to process the document; full decryption of the document is performed as late as possible so as to minimize the possibility of intercepting the document before it has been fully rendered to screen or to paper.