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    • 21. 发明授权
    • Fast local recommender queries via modified spatial data structure querying
    • 通过修改的空间数据结构查询快速本地推荐人查询
    • US07743081B2
    • 2010-06-22
    • US11857270
    • 2007-09-18
    • Michael Roberts
    • Michael Roberts
    • G06F17/30
    • G06F17/30241G06F17/30867G06Q30/02H04L67/18H04L67/20H04W4/02H04W4/18
    • One embodiment of the present invention provides a system that can recommend leisure activities to a user. During operation, the system receives one or more activity types. Next it receives a bound in terms of a nearness metric such as travel distance, travel time, or travel cost. Next, it receives location information associated with a computing device of the user. The system then uses the location information to identify a cell stored in a spatial database. The system then returns a set of leisure activities that match the activity types and that are within the bound relative to the cell. The spatial database includes leisure activity data that is segmented based on physical position such as latitude and longitude. Moreover, the cells of the spatial database are linked based on the nearness metric.
    • 本发明的一个实施例提供一种能够向用户推荐休闲活动的系统。 在操作期间,系统接收一个或多个活动类型。 接下来,它接收到诸如行程距离,旅行时间或旅行成本等接近度量的界限。 接下来,它接收与用户的计算设备相关联的位置信息。 然后,系统使用位置信息来识别存储在空间数据库中的单元。 然后,系统返回一组与活动类型相匹配的休闲活动,并且相对于单元格处于绑定之内。 空间数据库包括基于诸如纬度和经度的物理位置分段的休闲活动数据。 此外,空间数据库的单元基于近似度量被链接。
    • 22. 发明授权
    • System and method for router virtual networking
    • 路由器虚拟网络的系统和方法
    • US07739360B2
    • 2010-06-15
    • US12210957
    • 2008-09-15
    • Thomas Lee WatsonLance Arnold Visser
    • Thomas Lee WatsonLance Arnold Visser
    • G06F15/177
    • H04L45/00H04L45/586
    • A host router is logically partitioned into virtual router domains that manage independent processes and routing application copies but share a common operating system. Each v-net manages an independent set of sockets and host router interfaces, each associated with only one v-net at one time, but interchangeably repartitionable Traffic is removed from an interface during repartitioning. Duplicate arrays of global variables copied to each v-net are accessed by macro references. A v-net facility can separate route tables used internally from the externally visible route tables and can avoid conflicts between internal and external IP addresses that share the same identifier. For example a common FreeBSD operating system supports a dynamic routing protocol (DRP) application. Each v-net runs an independent copy of the DRP software and is logically independent. A failure in one DRP copy does not adversely affect other copies.
    • 主机路由器在逻辑上分为虚拟路由器域,管理独立进程和路由应用程序副本,但共享一个常见的操作系统。 每个v-net管理一组独立的套接字和主机路由器接口,每个接口一次只与一个v-net相关联,但可重新分配的业务在重新分区期间从接口中移除。 复制到每个v-net的全局变量的重复数组由宏引用访问。 v-net设施可以将内部使用的路由表与外部可见的路由表分开,并且可以避免共享相同标识符的内部和外部IP地址之间的冲突。 例如,一个常见的FreeBSD操作系统支持动态路由协议(DRP)应用程序。 每个v-net运行DRP软件的独立副本,在逻辑上是独立的。 一个DRP副本中的故障不会对其他副本产生不利影响。
    • 23. 发明授权
    • System and method for facilitating a consistent point-in time copy
    • 用于促进一致的时间点副本的系统和方法
    • US07739352B2
    • 2010-06-15
    • US10831096
    • 2004-04-23
    • Brian L. WongDavid RobinsonRichard J. McDougallSpencer Shepler
    • Brian L. WongDavid RobinsonRichard J. McDougallSpencer Shepler
    • G06F15/16G06F12/00
    • G06F17/30088
    • A system and method for facilitating a consistent point-in-time copy (PITC). A data provider offers access to data by one or more clients. A client issues a PITC request for a set of data to the data provider, or the provider initiates its own request. The data provider instructs one or more clients, particularly clients accessing the set of data, to flush any pending updates involving the files. The clients acknowledge the flush request, flush their data, and notify the data provider when their flushes are complete. Post-consistency updates are deferred (e.g., using a write-aside buffer). If a client fails to acknowledge the flush request or notify of flush completion, the data provider may abort the PITC or continue because the data may not be consistent or consistency may not be assured. If not aborted, the PITC may be marked to indicate that it is incomplete.
    • 用于促进一致的时间点复制(PITC)的系统和方法。 数据提供者提供一个或多个客户端对数据的访问。 客户端向数据提供者发出一组数据的PITC请求,或者提供者发起自己的请求。 数据提供者指示一个或多个客户端,特别是访问该组数据的客户端,以刷新涉及文件的任何未决更新。 客户端确认刷新请求,刷新其数据,并在其刷新完成时通知数据提供者。 后期一致性更新被推迟(例如,使用写入缓冲区)。 如果客户端无法确认刷新请求或通知刷新完成,则数据提供者可能会中止PITC或继续,因为数据可能不一致或一致性可能无法保证。 如果没有中止,PITC可能被标记为表示它是不完整的。
    • 24. 发明授权
    • Starvation-avoiding unbounded transactional memory
    • 饥饿 - 避免无限交易记忆
    • US07730265B1
    • 2010-06-01
    • US11715243
    • 2007-03-06
    • Robert E. CypherShailender Chaudhry
    • Robert E. CypherShailender Chaudhry
    • G06F12/00
    • G06F12/126
    • One embodiment of the present invention provides a system that facilitates efficient transactional execution. During operation, the system executes a starvation-avoiding transaction for a thread, wherein executing the starvation-avoiding transaction involves: (1) placing load-marks on cache lines which are loaded during the starvation-avoiding transaction; (2) placing store-marks on cache lines which are stored to during the starvation-avoiding transaction; and (3) writing a timestamp value into metadata for load-marked and store-marked cache lines. While the thread is executing the starvation-avoiding transaction, the system prevents other threads from executing another starvation-avoiding transaction. Whereby the load-marks and store-marks prevent interfering accesses from other threads to the cache lines during the starvation-avoiding transaction.
    • 本发明的一个实施例提供一种促进有效的事务执行的系统。 在操作期间,系统执行针对线程的避免饥饿事务,其中执行避免饥饿事务涉及:(1)在避免饥饿交易期间加载的高速缓存线上放置加载标记; (2)将存储标记放置在在饥饿 - 避免交易期间存储的高速缓存行上; 和(3)将时间戳值写入用于加载标记和存储标记的高速缓存行的元数据。 当线程正在执行避免饥饿事务时,系统会阻止其他线程执行另一个避免饥饿事务。 由于加载标记和存储标记防止在饥饿 - 避免事务处理期间来自其他线程的访问到缓存线。
    • 25. 发明授权
    • Method and apparatus for detecting a router that improperly responds to ARP requests
    • 用于检测路由器对ARP请求的响应不正确的方法和装置
    • US07729292B2
    • 2010-06-01
    • US12190956
    • 2008-08-13
    • Stuart D. CheshireJoshua V. Graessley
    • Stuart D. CheshireJoshua V. Graessley
    • H04L12/28H04L12/66
    • H04L29/12028H04L61/103
    • One embodiment of the present invention provides a system that detects a non-compliant router that incorrectly responds to all address-resolution-protocol (ARP) requests, including ARP requests and ARP probes for link-local IP addresses. This is accomplished by sending an ARP request asking for an Ethernet address associated with a link-local IP address, wherein the link-local IP address is a reserved link-local IP address, which should not be assigned to any device. If a response is received to the ARP request, the system determines that the response was sent by a non-compliant router that incorrectly responds to all ARP requests, including ARP requests for link-local IP addresses.
    • 本发明的一个实施例提供了一种系统,其检测不正确地响应所有地址解析协议(ARP)请求的不兼容路由器,包括用于链路本地IP地址的ARP请求和ARP探测。 这是通过发送请求与链路本地IP地址相关联的以太网地址的ARP请求来实现的,其中链路本地IP地址是不被分配给任何设备的保留链路本地IP地址。 如果接收到ARP请求的响应,则系统确定响应是由不符合SSL协议的路由器发送的,该路由器对所有ARP请求(包括链路本地IP地址的ARP请求)进行错误响应。
    • 27. 发明授权
    • Memory allocation in memory constrained devices
    • 内存受限设备中的内存分配
    • US07721064B1
    • 2010-05-18
    • US11772635
    • 2007-07-02
    • Ioi Kim LamOleg Pliss
    • Ioi Kim LamOleg Pliss
    • G06F12/00G06F13/00
    • G06F12/023G06F12/109G06F2212/401
    • Apparatus, methods and computer program products are disclosed to improve allocation of physical memory in a memory limited device when the amount of unallocated memory approaches a threshold. In this situation the disclosed technology will identify memory pages that have substantially the same content, identify the process-contexts that map to the identified memory pages, remap these process-contexts to one of the identical memory pages, recycle all of the other identical memory pages to increase the amount of unallocated memory, and conditions the process-contexts to appropriately trap accesses to the mapped page.
    • 公开了装置,方法和计算机程序产品,以在未分配存储器的量接近阈值时改善存储器限制装置中的物理存储器的分配。 在这种情况下,所公开的技术将识别具有基本相同内容的存储器页面,识别映射到所识别的存储器页面的过程上下文,将这些处理上下文重新映射到相同存储器页面中的一个,再循环所有其他相同存储器 页面以增加未分配内存的数量,并且规定进程上下文以适当地捕获对映射页面的访问。