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    • 2. 发明授权
    • Apparatus and method for dynamic meta-tagging of compound documents
    • 复合文件的动态元标记的装置和方法
    • US6094657A
    • 2000-07-25
    • US942171
    • 1997-10-01
    • Brent Tzion HailpernPeter Kenneth MalkinRobert Jeffrey SchlossPhilip Shi-lung Yu
    • Brent Tzion HailpernPeter Kenneth MalkinRobert Jeffrey SchlossPhilip Shi-lung Yu
    • G06F17/30G06F17/00
    • G06F17/3089Y10S707/955Y10S707/99936Y10S707/99944
    • A method and apparatus to dynamically maintain META-tag information specifying categorization and/or degree of compound documents, which are collections or hierarchy of collections of objects (possibly web pages), for efficient retrieval of leaf or intermediate objects with specific characteristics without the need to search any content of the collection. The specific characteristic and the contents of the collection can change constantly both qualitatively and quantitatively (including the insertion, deletion and update of objects). While dynamically maintaining the META-tag information, there are no inclusion restrictions on these compound documents, i.e., any collection can contain itself either directly or recursively; and all objects within a META-tagged compound document are not required to participate. The PICS protocol may be used to specify this META-tag information with both categorization and degree; to reflect the obsolescence, currency or freshness of an objects; to validate a given object using a digital signature; and to enable charging for the META-tag service. Aggregation methods are provided to enable maximization, minimization, and averaging; to limit the propagation of META-tags; and to handle the time-out of META-tag and information validity.
    • 一种用于动态地维护META标签信息的方法和装置,所述META标签信息指定复合文档的分类和/或程度,所述复合文档是对象(可能的网页)的集合或层次结构,用于有效地检索具有特定特征的叶或中间对象而不需要 搜索集合的任何内容。 集合的具体特征和内容可以在定性和定量上(包括对象的插入,删除和更新)不断变化。 在动态维护META标签信息的同时,对这些复合文档没有包含限制,即任何集合都可以直接或递归地包含它们; 并且META标记的复合文档中的所有对象都不需要参与。 PICS协议可用于指定具有分类和度数的META标签信息; 反映物体的过时,货币或新鲜度; 使用数字签名验证给定对象; 并为META标签服务启用计费。 提供聚合方法以实现最大化,最小化和平均化; 限制META标签的传播; 并处理META标签的超时和信息有效性。
    • 3. 发明授权
    • Dynamic push filtering based on information exchanged among nodes in a
proxy hierarchy
    • 基于在代理层次结构中的节点之间交换的信息的动态推送过滤
    • US6065058A
    • 2000-05-16
    • US854226
    • 1997-05-09
    • Brent Tzion HailpernPeter Kenneth MalkinRobert Jeffrey SchlossPhilip Shi-Lung Yu
    • Brent Tzion HailpernPeter Kenneth MalkinRobert Jeffrey SchlossPhilip Shi-Lung Yu
    • G06F12/00G06F13/00H04L12/18H04L29/06
    • H04L63/0209H04L12/1859H04L29/06H04L12/1881H04L67/42
    • A push-based filtering of objects in a client-server hierarchy based on usage information. A method of annotating a push object with meta information on its content and/or urgency is also described. Objects can be staged at the server(s) to provide fast access when the filtered object is later requested. The PICS protocol may be used to communicate various types of information: e.g., by the content provider or a higher level proxy to annotate the object, including an urgency, a summary or title, a group classification, and/or an identity of the push; to convey usage or preference information on pushed objects up the hierarchy, including usage information and user preferences based on object group classifications; and to convey a staging status of each staged object down the hierarchy to improve caching efficiency. An object may include a content hierarchy such as a title, a summary and the full content. The filtering process can factor in not only which next (lower) level nodes will receive the push, but also the content level each node will receive. The push filtering decision can be based on aggregate usage information at the lower level proxy or client nodes. A staging decision can be based on the filtering decision, the successful completion of the push to the selected lower level proxies/clients, object usage information and/or a staging decision on other nodes in the hierarchy. An efficient means to purge a staged object is also described.
    • 基于使用信息的客户机 - 服务器层次结构中的对象的基于推送的过滤。 还描述了使用具有关于其内容和/或紧急性的元信息来注释推送对象的方法。 当稍后请求过滤的对象时,可以在服务器上上传对象以提供快速访问。 PICS协议可以用于传达各种类型的信息:例如,由内容提供商或更高级别的代理来标注对象,包括紧急性,摘要或标题,群组分类和/或推送的身份 ; 基于对象组分类来传送层次结构上的推送对象的使用或偏好信息,包括使用信息和用户偏好; 并将层次结构中的每个阶段对象的分期状态传达给提高缓存效率。 对象可以包括诸如标题,摘要和完整内容的内容层次结构。 过滤过程不仅可以考虑下一个(较低)级节点将接收推送,还可以考虑每个节点将接收的内容级别。 推送过滤决定可以基于较低层代理或客户端节点上的聚合使用信息。 分期决策可以基于过滤决策,成功完成对所选择的较低级别代理/客户端的推送,对象使用信息和/或对该层级中的其他节点的分级决定。 还描述了清除分段对象的有效方法。
    • 4. 发明授权
    • Collaborative caching of a requested object by a lower level node as a
function of the caching status of the object at a higher level node
    • 作为较高级别节点上对象的缓存状态的函数的由较低级别节点协作缓存所请求的对象
    • US5924116A
    • 1999-07-13
    • US831237
    • 1997-04-02
    • Charu Chandra AggarwalPeter Kenneth MalkinRobert Jeffrey SchlossPhilip Shi-lung Yu
    • Charu Chandra AggarwalPeter Kenneth MalkinRobert Jeffrey SchlossPhilip Shi-lung Yu
    • G06F17/30G06F12/08
    • G06F17/30902
    • A method and system of collaboratively caching information to allow improved caching decisions by a lower level or sibling node. In a caching hierarchy, the client and/or servers may factor in the caching status at the higher level in deciding whether to cache an object and which objects are to be replaced. The PICS protocol may be used to pass the caching information of some or all the upper hierarchy down the hierarchy. Furthermore, the caching status information can also be used to direct the object request to the closest higher level proxy which has potentially cached the object, instead of blindly requesting it from the next immediate higher level proxy. A selection policy used to select objects for replacement in the cache may be prioritized not only on the size and the frequency of access of the object, but also on the access time required to get the object if it is not cached. The selection policy may also include a selection weight factor wherein each object is assigned a selection weight based on its replacement cost, the object size and how frequently it is modified. Non-uniform size objects may be classified in ranges of selection weights having geometrically increasing intervals. Multiple LRU stacks may be independently maintained wherein each stack contains objects in a certain range of selection weights. In order to choose candidates for replacement, only the least recently used objects in each group need be considered.
    • 协同缓存信息以允许由较低级别或兄弟节点改进的缓存决定的方法和系统。 在高速缓存层次结构中,客户端和/或服务器可以考虑高级别的缓存状态,以决定是否缓存对象以及哪些对象被替换。 可以使用PICS协议将部分或全部上层的缓存信息传递给层次结构。 此外,缓存状态信息还可以用于将对象请求定向到潜在地缓存对象的最接近的较高级代理,而不是盲目地从下一个即时更高级别的代理请求它。 用于选择用于在高速缓存中替换的对象的选择策略可以不仅基于对象的访问的大小和频率,而且还取决于如果没有缓存而获取对象所需的访问时间。 选择策略还可以包括选择权重因子,其中基于其重置成本,对象大小以及修改的频率来为每个对象分配选择权重。 不均匀尺寸的物体可以分类为具有几何增加间隔的选择权重的范围。 可以独立地维护多个LRU堆栈,其中每个堆叠包含在一定范围的选择权重中的对象。 为了选择候选人进行替换,只需要考虑每组中最近最少使用的对象。
    • 5. 发明授权
    • Dynamic modification of multimedia content
    • 动态修改多媒体内容
    • US06317795B1
    • 2001-11-13
    • US08898220
    • 1997-07-22
    • Peter Kenneth MalkinRobert Jeffrey SchlossEdward Charles SnibleMarc Hubert Willebeek-LeMairPhilip Shi-Lung Yu
    • Peter Kenneth MalkinRobert Jeffrey SchlossEdward Charles SnibleMarc Hubert Willebeek-LeMairPhilip Shi-Lung Yu
    • G06F1516
    • H04N7/17318H04N7/162H04N21/25891H04N21/2668H04N21/4532H04N21/454H04N21/45455H04N21/478H04N21/6405
    • A method and system for manipulating or modifying identifiable objects in a standard broadcast or Internet-based multimedia stream according to a control specification and a content specification. Viewers and/or organizations can independently specify acceptable levels of content on multiple dimensions to satisfy the content specification while minimizing the filtering or blocking to the viewers. A “fuzz ball” control specification is provided for masking some portion of a video frame. Several fuzz ball specifications can be overlaid to address multidimensional content specifications or rating systems. The manipulation of the multimedia stream can take place at the client (set-top box or computer), intermediate node, the content server or a combination thereof. Proxy servers can modify content specifications for outgoing requests, enabling organizations to specify intranet-wide policies. Multicasting can be supported by using a single stream delivered to multiple clients, each modifying the video using a different specification. The specification to facilitate modification can be done at different granularity levels: the video, a group of frames, or individual frame level and can also be time-based. Various protocols can be used to provide the content and/or control specification, including the VBI of a standard broadcast, PICS, RTSP and MPEG protocols.
    • 根据控制规范和内容规范,在标准广播或基于互联网的多媒体流中操纵或修改可标识对象的方法和系统。 观众和/或组织可以在多个维度上独立地指定可接受的内容水平以满足内容规范,同时最小化对观看者的过滤或阻止。 提供“模糊球”控制规范来掩蔽视频帧的某些部分。 可以叠加几个毛球规格来解决多维内容规范或评级系统。 多媒体流的操纵可以在客户机(机顶盒或计算机),中间节点,内容服务器或其组合上进行。 代理服务器可以修改外发请求的内容规范,使组织能够指定Intranet范围的策略。 可以通过使用传递给多个客户端的单个流来支持多播,每个流都使用不同的规范修改视频。 促进修改的规范可以在不同的粒度级别进行:视频,一组帧或单个帧级别,并且也可以基于时间。 可以使用各种协议来提供包括标准广播,PICS,RTSP和MPEG协议的VBI的内容和/或控制规范。
    • 10. 发明授权
    • Method and apparatus for providing awareness-triggered push
    • 提供意识触发推动的方法和装置
    • US06311206B1
    • 2001-10-30
    • US09231081
    • 1999-01-13
    • Peter Kenneth MalkinPhilip Shi-lung Yu
    • Peter Kenneth MalkinPhilip Shi-lung Yu
    • G06F1300
    • H04L67/16H04L29/06H04L67/24H04L67/26H04L67/2804H04L67/2823H04L67/2833H04L69/329
    • A method and a computer program device for pushing data from at least one source entity to at least one client entity over a network, a client entity being characterized as having a particular operating state. The method and computer program device comprise the steps of: transferring data from the at least one source entity to a push proxy entity for subsequent transmission of the data to the client entity; requesting a notification regarding the particular state of the client entity; monitoring a state of the client entity until the client entity is in the particular operating state and sending a notification communicating the state to the push proxy entity; and transferring data to the client entity in response to receiving the notification. The state notification may specify push information, which may be used to determine a least expensive device to which to transfer given data. The state notification also reduces the network-polling load by initiating each poll.
    • 一种用于通过网络将数据从至少一个源实体推送到至少一个客户端实体的方法和计算机程序设备,客户端实体被表征为具有特定的操作状态。 该方法和计算机程序设备包括以下步骤:将数据从至少一个源实体传送到推送代理实体,用于随后将数据传输到客户端实体; 请求有关客户实体的特定状态的通知; 监视客户端实体的状态,直到客户端实体处于特定的操作状态,并向推送代理实体发送通知状态的通知; 以及响应于接收到所述通知而将数据传送到所述客户端实体。 状态通知可以指定推送信息,其可以用于确定用于传送给定数据的最不昂贵的设备。 状态通知还通过启动每个轮询来减少网络轮询负载。