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1. 发明授权

US5825877A Support for portable trusted software 失效
标题翻译：支持便携式可信软件
公开(公告)号：US5825877A
公开(公告)日：1998-10-20
申请号：US661517
申请日：1996-06-11
申请人： Asit Dan , Rajiv Ramaswami , Dinkar Sitaram
发明人： Asit Dan , Rajiv Ramaswami , Dinkar Sitaram
IPC分类号： G06F12/14 , G06F1/00 , G06F9/445 , G06F21/00 , G06F21/22 , G06F21/24 , H04L9/32 , H04L29/06 , H04L9/00
CPC分类号： H04L63/0435 , G06F21/54 , H04L29/06 , H04L63/0823 , H04L63/12 , H04L9/321 , H04L9/3263 , G06F2211/009 , H04L63/101
摘要： A form of authentication is provided wherein a trusted third party signs a certificate to identify the author of a program and to secure its integrity. The program code is encapsulated or otherwise associated with the certificate and an access control list (ACL). The access control list describes the permissions and resources required by the code. An enforcement mechanism which allocates system permissions and resources in accordance with the ACL. In a preferred embodiment, a code production system communicates with a certification agency, which is a trusted third party. The certification agency issues a certificate for the code and a certificate for the access list of that code. Once the certificate is issued it is not possible for any party to modify the code or access list without invalidating the certificate. The code and its ACL, along with their certificates are stored on a server. A client downloading the code or access list can verify the integrity of the code/access list and the system can enforce the access list such that the permissions and resources are not exceeded.
摘要翻译：提供了一种认证形式，其中可信第三方签署证书以识别程序的作者并确保其完整性。程序代码封装或以其他方式与证书和访问控制列表（ACL）相关联。访问控制列表描述了代码所需的权限和资源。根据ACL分配系统权限和资源的执行机制。在优选实施例中，代码生产系统与认证机构进行通信，认证机构是可靠的第三方。认证机构颁发代码证书和该代码访问列表的证书。一旦发出证书，任何一方在不使证书无效的情况下，不可能修改代码或访问列表。代码及其ACL及其证书存储在服务器上。下载代码或访问列表的客户端可以验证代码/访问列表的完整性，并且系统可以强制执行访问列表，以便不超过权限和资源。

2. 发明授权

US06742019B1 Sieved caching for increasing data rate capacity of a heterogeneous striping group 有权
标题翻译：筛选缓存，以提高异构条带组的数据速率容量
公开(公告)号：US06742019B1
公开(公告)日：2004-05-25
申请号：US09360324
申请日：1999-07-23
申请人： Asit Dan , Dinkar Sitaram , Junehwa Song
发明人： Asit Dan , Dinkar Sitaram , Junehwa Song
IPC分类号： G06F15167
CPC分类号： H04N7/17336 , G06F12/0866 , G06F12/0888 , H04L29/06027 , H04L65/4084 , H04L67/1002 , H04L67/1008 , H04L67/2842 , H04L69/329 , H04L2029/06054 , H04N21/23103 , H04N21/23106 , H04N21/2318
摘要： Under the present invention, a small cache is used for the selective buffering of devices of a heterogeneous striping group (i.e., striping group made of devices with unequal capacities) to match the load on each device to its capacity. The inventive caching algorithm utilizes a device map, or disk map, and applies a cache distribution factor for each device of a group to determined how to selectively buffer blocks read from different devices of a striping group; thereby placing different loads on the different devices of a striping group in accordance with their capacities.
摘要翻译：在本发明中，使用小型缓存器来选择性地缓冲异构条带组（即，由具有不相等容量的设备组成的条带组）的装置，以将每个装置上的负载与其容量相匹配。本发明的高速缓存算法利用设备图或磁盘映射，并对组中的每个设备应用高速缓存分配因子，以确定如何选择性地缓冲从条带组的不同设备读取的块; 从而根据其能力将不同的负载放置在条带组的不同装置上。

3. 发明授权

US06223206B1 Method and system for load balancing by replicating a portion of a file being read by a first stream onto second device and reading portion with a second stream capable of accessing 失效
标题翻译：用于通过将由第一流读取的文件的一部分复制到第二设备和具有能够访问的第二流的读取部分的负载平衡的方法和系统
公开(公告)号：US06223206B1
公开(公告)日：2001-04-24
申请号：US09143001
申请日：1998-08-28
申请人： Asit Dan , Martin Gerhard Kienzle , Dinkar Sitaram , Philip Shi-lung Yu
发明人： Asit Dan , Martin Gerhard Kienzle , Dinkar Sitaram , Philip Shi-lung Yu
IPC分类号： G06F1314
CPC分类号： H04N21/2182 , G06F3/061 , G06F3/065 , G06F3/0689 , G06F11/3433 , G06F17/30017
摘要： A method and system for improving load balancing in a file server is disclosed. The method includes determining the existence of an overload condition on a storage device, the storage device having a plurality of retrieval streams accessing at least one file thereon; selecting a first retrieval stream reading a file; replicating a portion of said file being read by said first retrieval stream onto a second storage device; and reading the replicated portion of said file on said second storage device with a retrieval stream capable of accessing the replicated portion of said file. The method and system enables the dynamic replication of data objects to respond to fluctuating user demand. The method and system is particularly useful in file servers such as multimedia servers delivering continuously in real time large multimedia files such as movies.
摘要翻译：公开了一种用于改善文件服务器中的负载平衡的方法和系统。该方法包括确定在存储设备上是否存在过载状况，所述存储设备具有访问其上至少一个文件的多个检索流; 选择读取文件的第一检索流; 将由所述第一检索流读取的所述文件的一部分复制到第二存储设备上; 以及使用能够访问所述文件的复制部分的检索流来读取所述第二存储设备上的所述文件的复制部分。该方法和系统使数据对象的动态复制能够响应不断变化的用户需求。该方法和系统在诸如电影等实时大型多媒体文件连续传送的多媒体服务器等文件服务器中特别有用。

4. 发明授权

US5867651A System for providing custom functionality to client systems by redirecting of messages through a user configurable filter network having a plurality of partially interconnected filters 失效
标题翻译：用于通过经由具有多个部分互连的过滤器的用户可配置过滤器网络重定向消息来向客户端系统提供定制功能的系统
公开(公告)号：US5867651A
公开(公告)日：1999-02-02
申请号：US703557
申请日：1996-08-27
申请人： Asit Dan , William H. Tetzlaff , Dinkar Sitaram
发明人： Asit Dan , William H. Tetzlaff , Dinkar Sitaram
IPC分类号： G06F11/18 , G06F11/34
CPC分类号： G06F9/44526 , G06F17/30861 , G06F21/51 , H04L63/14 , H04L67/02
摘要： The functionality of Web clients (e.g. browser) is enhanced using a WebFilter Manager (WFM) that allows i) easy integration of individual WebFilters operating on ingoing or outgoing messages between the browser and web servers, ii) arbitrary and dynamic ordering of WebFilters operating on a message stream, iii) splitting, combining, modifying and processing of message streams by WebFilters. The same methodology can also be applied in any client server environment for extending the functionality of the client or server.
摘要翻译：使用WebFilter管理器（WFM）来增强Web客户端（例如浏览器）的功能，该WebFilter管理器允许i）轻松集成在浏览器和Web服务器之间进行输入或传出消息的单个WebFilters，ii）在WebFilter上运行的任意和动态排序消息流，iii）WebFilters分离，组合，修改和处理消息流。在任何客户端服务器环境中也可以使用相同的方法来扩展客户机或服务器的功能。

5. 发明授权

US6088767A Fileserver buffer manager based on file access operation statistics 失效
标题翻译： Fileserver缓冲管理器基于文件访问操作统计
公开(公告)号：US6088767A
公开(公告)日：2000-07-11
申请号：US55422
申请日：1993-04-30
申请人： Asit Dan , Dinkar Sitaram , Philip Shi-lung Yu
发明人： Asit Dan , Dinkar Sitaram , Philip Shi-lung Yu
IPC分类号： G06F12/00 , G06F12/12 , G06F17/30
CPC分类号： G06F12/128 , G06F12/122 , Y10S707/99931 , Y10S707/99953
摘要： Fileserver buffers are managed so as to improve the hit ratio for read accesses to the fileserver by clients by grouping related files into filesets, collecting fileserver access operation (i.e., read and write) statistics for each of the filesets, classifying the filesets into a plurality of fileset categories having similar collected access operation statistics and then implementing different fileserver buffer management policies for the blocks (or pages) from each of the different fileset categories. The buffer management policy applied to each of these categories is designed to create a generally higher preference for retaining blocks (or pages) of files in the fileserver buffers having a generally higher read to write ratio.
摘要翻译：管理文件服务器缓冲区，以便通过将相关文件分组到文件集中来提高客户机对文件服务器的读取访问的命中率，收集每个文件集的文件服务器访问操作（即读取和写入）统计信息，将文件集分类为多个的文件集类别具有类似的收集的访问操作统计信息，然后为来自每个不同文件集类别的块（或页面）实现不同的文件服务器缓冲器管理策略。应用于这些类别中的每一个的缓冲器管理策略旨在创建通常更高的优先级，以保留具有通常较高的读写比的文件服务器缓冲器中的文件的块（或页）。

6. 发明授权

US5809239A Load balancing in servers by allocating buffer to streams with successively larger buffer requirements until the buffer requirements of a stream can not be satisfied 失效
标题翻译：通过将缓冲区分配给具有连续更大缓冲区要求的流缓存，直到不能满足流的缓冲区要求，才能在服务器中进行负载平衡
公开(公告)号：US5809239A
公开(公告)日：1998-09-15
申请号：US677408
申请日：1996-07-09
申请人： Asit Dan , Dinkar Sitaram
发明人： Asit Dan , Dinkar Sitaram
IPC分类号： G06F12/08 , G06F3/06 , G06F12/00 , G06F13/00 , G06F17/30 , H04N7/173 , H04N7/14 , H04H1/00
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0656 , G06F3/0674 , H04N7/17336 , G06F2003/0691
摘要： A video server is provided with buffer manager which balances the loads on the various "movie storage" elements of a video server by preferentially buffering streams on highly loaded storage elements. The allocation of buffer takes place only when the storage element load increases due to the arrival of a new request or when buffer becomes available due to the pausing or stopping of an old request.
摘要翻译：视频服务器提供有缓冲器管理器，其通过优先缓冲高负载存储元件上的流来平衡视频服务器的各种“电影存储”元件上的负载。只有当存储元件负载由于新请求的到达而增加或者由于暂停或停止旧请求而导致缓冲器可用时，才发生缓冲区的分配。

7. 发明授权

US5768520A Method for determining load capacity by grouping physical components into logical components whose loads represent fixed proportional loads of physical components 失效
标题翻译：通过将物理组件分组成其负载表示物理组件的固定比例负载的逻辑组件来确定负载容量的方法
公开(公告)号：US5768520A
公开(公告)日：1998-06-16
申请号：US593597
申请日：1996-01-29
申请人： Asit Dan , Martin G. Kienzle , Dinkar Sitaram , William H. Tetzlaff
发明人： Asit Dan , Martin G. Kienzle , Dinkar Sitaram , William H. Tetzlaff
IPC分类号： G06F9/50 , G06F15/16
CPC分类号： G06F9/5083
摘要： A system and method are provided for determining load capacity of a system. Physical components of the system and their interconnection are identified. The physical components are converted into logical components such that at least one logical component is created by grouping a plurality of the physical components and such that a load on the logical component will result in an approximately fixed proportional load on the plurality of physical components. Links between the logical components and a proportion of the load placed on each link between a source and destination pair are determined. A model of the logical components and interconnection of the logical components in is then stored in an electronically accessible data structure formed in a memory. A system and method for determining a path for routing data between a source and a destination pair in a system are also provided. An interconnection model of logical system components and logical links is provided wherein the model reflects the saturation capacity of each of the logical system components and each of the logical links. The bandwidth required for providing the data is determined. Then, by reference to the model, a path between the source and destination pair is selected that would not saturate any of the logical system components and logical links when providing the data. System capacity is then reserved by altering the model to reflect the load on the system components that would be required by providing the data from the source to the destination by way of the selected path.
摘要翻译：提供了用于确定系统的负载能力的系统和方法。识别系统的物理组件及其互连。物理组件被转换成逻辑组件，使得通过对多个物理组件进行分组而创建至少一个逻辑组件，并且使得逻辑组件上的负载将导致对多个物理组件的大致固定的比例负载。确定逻辑组件之间的链接和放置在源和目的地对之间的每个链路上的负载的一部分。然后将逻辑组件的逻辑组件和互连的模型存储在形成在存储器中的电子可访问数据结构中。还提供了用于确定用于在系统中的源和目的地对之间路由数据的路径的系统和方法。提供了逻辑系统组件和逻辑链路的互连模型，其中模型反映了每个逻辑系统组件和每个逻辑链路的饱和容量。确定提供数据所需的带宽。然后，通过参考模型，选择源和目标对之间的路径，当提供数据时，不会使任何逻辑系统组件和逻辑链路饱和。然后通过更改模型来保留系统容量，以反映通过所选路径将数据从源提供到目的地所需的系统组件的负载。

8. 发明授权

US5544327A Load balancing in video-on-demand servers by allocating buffer to streams with successively larger buffer requirements until the buffer requirements of a stream can not be satisfied 失效
标题翻译：在视频点播服务器中进行负载平衡，通过向具有连续更大缓冲区要求的流分配缓冲区，直到不能满足流的缓冲区要求
公开(公告)号：US5544327A
公开(公告)日：1996-08-06
申请号：US280419
申请日：1994-07-26
申请人： Asit Dan , Dinkar Sitaram
发明人： Asit Dan , Dinkar Sitaram
IPC分类号： G06F12/08 , G06F3/06 , G06F12/00 , G06F13/00 , G06F17/30 , H04N7/173 , H04H1/02 , H04N7/52
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0656 , G06F3/0674 , H04N7/17336 , G06F2003/0691
摘要： A video server is provided with buffer manager which balances the loads on the various "movie storage" elements of a video server by preferentially buffering streams on highly loaded storage elements. The allocation of buffer takes place only when the storage element load increases due to the arrival of a new request or when buffer becomes available due to the pausing or stopping of an old request.
摘要翻译：视频服务器提供有缓冲器管理器，其通过优先缓冲高负载存储元件上的流来平衡视频服务器的各种“电影存储”元件上的负载。只有当存储元件负载由于新请求的到达而增加或者由于暂停或停止旧请求而导致缓冲器可用时，才发生缓冲区的分配。

9. 发明授权

US5787472A Disk caching system for selectively providing interval caching or segment caching of vided data 失效
标题翻译：磁盘缓存系统，用于选择性地提供间隔缓存或分段缓存数据
公开(公告)号：US5787472A
公开(公告)日：1998-07-28
申请号：US509312
申请日：1995-07-31
申请人： Asit Dan , Dinkar Sitaram
发明人： Asit Dan , Dinkar Sitaram
IPC分类号： H04N21/21 , H04N21/23 , G06F12/12 , H04N7/10
CPC分类号： H04N21/21 , H04N21/23
摘要： A system and method for caching sequential data streams in a cache storage device. For each information stream, a determination is made as to whether its data blocks should discarded from cache as they are read by a consuming process. Responsive to a determination that the data blocks of a stream should be discarded from the cache are read by the consuming process, the data blocks associated with that stream are cached in accordance with an interval caching algorithm. Alternatively, responsive to a determination that the data blocks of a stream should not be discarded from the cache storage device as they are read by the consuming process, the data blocks of that stream are cached in accordance with a segment caching algorithm.
摘要翻译：一种用于在缓存存储设备中缓存顺序数据流的系统和方法。对于每个信息流，确定其数据块在消费过程读取时是否应从缓存中丢弃。响应于消费过程读取要从缓存中丢弃流的数据块的确定，根据间隔缓存算法来缓存与该流相关联的数据块。或者，响应于当消费过程读取流量的数据块不应该从高速缓存存储设备中被丢弃的确定时，根据段高速缓存算法高速缓存该数据流的数据块。

10. 发明授权

US5768681A Channel conservation for anticipated load surge in video servers 失效
标题翻译：视频服务器预期负载浪涌的通道保护
公开(公告)号：US5768681A
公开(公告)日：1998-06-16
申请号：US517642
申请日：1995-08-22
申请人： Asit Dan , Perwez Shahabuddin , Dinkar Sitaram , William H. Tetzlaff
发明人： Asit Dan , Perwez Shahabuddin , Dinkar Sitaram , William H. Tetzlaff
IPC分类号： H04N5/76 , H04N5/765 , H04N5/93 , H04N7/16 , H04N7/173 , H04N21/2385 , H04N21/262 , H04N21/472 , H04H1/00 , H04N7/14
CPC分类号： H04N7/17336
摘要： A system and method for scheduling the number of channels in video-on-demand servers so as to deal with time varying load. The scheduling process is hierarchical. A higher level scheduler controls the rate of channel consumption based on anticipated load, and a lower level scheduler selects the waiting client requests to be served when a channel is allocated by the higher level scheduler.
摘要翻译：一种用于调度视频点播服务器中的频道数量以便处理时变负载的系统和方法。调度过程是分层的。较高级别的调度器基于预期的负载来控制信道消耗的速率，并且较低级别的调度器选择当上一级调度器分配信道时待服务的等待客户机请求。

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