公开(公告)号：US06324581B1

公开(公告)日：2001-11-27

申请号：US09261542

申请日：1999-03-03

申请人： Yikang Xu ,  Uresh K. Vahalia ,  Xiaoye Jiang ,  Uday Gupta ,  Percy Tzelnic

发明人： Yikang Xu ,  Uresh K. Vahalia ,  Xiaoye Jiang ,  Uday Gupta ,  Percy Tzelnic

IPC分类号： G06F1516

CPC分类号： H04L67/2819 ,  G06F17/30171 ,  H04L29/06 ,  H04L67/42 ,  H04L69/329

摘要： A plurality of data mover computers control access to respective file systems in data storage. A network client serviced by any of the data movers can access each of the file systems. If a data mover receives a client request for access to a file in a file system to which access is controlled by another data mover, then the data mover that received the client request sends a metadata request to the data mover that controls access to the file system. The data mover that controls access to the file system responds by placing a lock on the file and returning metadata of the file. The data mover that received the client request uses the metadata to formulate a data access command that is used to access the file data in the file system over a bypass data path that bypasses the data mover computer that controls access to the file system.

摘要翻译： 多个数据移动器计算机控制对数据存储中的相应文件系统的访问。 由任何数据移动器服务的网络客户机可以访问每个文件系统。 如果数据移动者接收到访问由另一个数据移动器控制访问的文件系统中的文件的客户端请求，则接收到客户端请求的数据移动器向控制对该文件的访问的数据移动器发送元数据请求 系统。 控制对文件系统访问的数据移动器通过对文件进行锁定并返回文件的元数据来做出响应。 接收客户端请求的数据移动器使用元数据来制定数据访问命令，该命令用于通过旁路数据路径访问文件系统中的文件数据，旁路数据路径绕过控制对文件系统的访问的数据移动器计算机。

公开(公告)号：US07843818B2

公开(公告)日：2010-11-30

申请号：US11356935

申请日：2006-02-17

申请人： Lon-Chan Chu ,  Ido M. Ben-Shachar ,  Ivan J. Leichtling ,  Leonard Alan Collins ,  Claus T. Giloi ,  Yikang Xu

发明人： Lon-Chan Chu ,  Ido M. Ben-Shachar ,  Ivan J. Leichtling ,  Leonard Alan Collins ,  Claus T. Giloi ,  Yikang Xu

IPC分类号： H04L12/28 ,  H04N5/04

CPC分类号： H04L65/80 ,  H04L12/1827 ,  H04L29/06027 ,  H04L47/2416 ,  H04L47/32 ,  H04L65/4038 ,  H04N7/152 ,  H04N21/23406 ,  H04N21/44004

摘要： In order to minimize the delay of the video images viewed by a network conference attendee, an intelligent buffering process (IB process) selectively discards video frames from at least one point, and in an embodiment, many network points, such as at “in” and/or “out” buffers of clients, servers, routers, etc. Packets of video frame data arrive at a buffer, which can fill to a predetermined limit if the packets cannot be forwarded due to delays or slow connections. To forward the most current video images, old frames in the buffer are discarded rather than forwarded. In a particular embodiment, when the buffer is full, the next arriving delta frame packet is discarded. To avoid distortion, each subsequent delta frame is discarded until a new key frame eventually arrives. If the buffer is still full when the key frame arrives, the buffer is purged and the new key frame is added.

摘要翻译： 为了最小化由网络会议参加者观看的视频图像的延迟，智能缓冲处理（IB处理）从至少一个点选择性地丢弃视频帧，并且在一个实施例中，许多网络点，诸如“in” 和/或“输出”缓冲器，视频帧数据的数据包到达缓冲区，如果分组由于延迟或慢速连接而不能转发，则可以填充到预定的限制。 要转发最新的视频图像，缓冲区中的旧帧将被丢弃而不是转发。 在特定实施例中，当缓冲器已满时，丢弃下一个到达的增量帧分组。 为了避免失真，每个随后的增量帧被丢弃，直到新的关键帧最终到达。 如果关键帧到达缓冲区仍然满，则清除缓冲区并添加新的关键帧。

公开(公告)号：US20070192412A1

公开(公告)日：2007-08-16

申请号：US11739174

申请日：2007-04-24

申请人： Yikang Xu ,  Leonard Collins ,  Lon-Chan Chu

发明人： Yikang Xu ,  Leonard Collins ,  Lon-Chan Chu

IPC分类号： G06F15/16

CPC分类号： H04L12/1822 ,  H04L12/1868

摘要： Conferencing data is reliably delivered to computer systems participating in a hierarchically arranged multi-cast conferencing session. When a child computer system does not receive a multi-cast packet (e.g., an IP multi-cast packet), the child computer system sends a negative acknowledgment to a parent computer system. In response, the parent computer system re-transmits conferencing data that was contained in the multi-cast packet to the child computer system. Conferencing data can be re-transmitted to the child computer system via uni-cast (e.g., TCP). Accordingly, conferencing data that is not received or that is damaged via multi-cast can be repaired via uni-cast. Computer systems can join an existing multi-cast conference session without having to communicate with the root computer system. The root computer system adjusts a multi-cast send rate to compensate for changed network conditions.

摘要翻译： 会议数据可靠地传递给参与分层安排的多播会议会话的计算机系统。 当子计算机系统不接收多播分组（例如，IP多播分组）时，子计算机系统向父计算机系统发送否定确认。 作为响应，父计算机系统将包含在多播包中的会议数据重新发送到子计算机系统。 可以通过单播（例如TCP）将会议数据重新发送到子计算机系统。 因此，可以通过单播来修复未被接收或被多播损坏的会议数据。 计算机系统可以加入现有的多播会议会话，而无需与根计算机系统进行通信。 根计算机系统调整多播发送速率以补偿已更改的网络条件。

公开(公告)号：US20230137251A1

公开(公告)日：2023-05-04

申请号：US17972618

申请日：2022-10-25

申请人： Dacheng Ren ,  Yikang Xu

发明人： Dacheng Ren ,  Yikang Xu

IPC分类号： C12Q1/18 ,  G01N35/02

摘要： An electrochemical biosensor based on magnetically coupled LC sensors for the rapid detection of microbial growth and sensitivity to microbials. The engineered LC sensors can be placed in 96 well plates and communicate the reading remotely with a receiver coil for signal analysis. The sensors were validated by testing the growth of Escherichia. coli, Staphylococcus. aureus, and Pseudomonas aeruginosa in the presence and absence of different antibiotics. Drug-resistant strains were used as controls. Bacterial growth was detected within 30 mins of culture inoculation, allowing rapid determination of antibiotic susceptibility at the phenotypic level. The pattern shown in the LC sensor AST is consistent with results collected with traditional optical density (OD) 600 nm measurement, additional validation was also performed with lysogeny broth (LB) dosed with fetal bovine serum (FBS). With the compatibility with 96-well plates, this rapid AST may be used for low-cost, point-of-care applications.

公开(公告)号：US08224940B2

公开(公告)日：2012-07-17

申请号：US11756542

申请日：2007-05-31

申请人： Vick B. Mukherjee ,  Yikang Xu ,  John T. Spivey ,  John S. Holmes, III

发明人： Vick B. Mukherjee ,  Yikang Xu ,  John T. Spivey ,  John S. Holmes, III

IPC分类号： G06F15/173 ,  G06F21/00 ,  G06F15/16 ,  G06F3/00 ,  H04L12/56

CPC分类号： H04L41/08 ,  H04L51/04 ,  H04L67/24

摘要： A strategy is described for constructing bloom filter information and exception information. The bloom filter information is constructed to express a set of items in a lossy compressed form. The exception information reveals occasions in which the bloom filter information erroneously indicates that a candidate item is a member of the set. The strategy can apply the bloom filter information and the exception information to select a representative device among a group of devices on which a user may maintain simultaneous presence.

摘要翻译： 描述了一种用于构建布隆过滤器信息和异常信息的策略。 绽放滤波器信息被构造为以有损压缩形式表达一组项目。 异常信息揭示了绽放过滤器信息错误地指示候选项是集合的成员的场合。 该策略可以应用布隆过滤器信息和异常信息，以在用户可以保持同时存在的一组设备中选择代表性设备。

公开(公告)号：US07227864B2

公开(公告)日：2007-06-05

申请号：US10024090

申请日：2001-12-17

申请人： Leonard Alan Collins ,  Kristofer Noel Iverson ,  Lon-Chan Chu ,  Yikang Xu ,  Xin Liu

发明人： Leonard Alan Collins ,  Kristofer Noel Iverson ,  Lon-Chan Chu ,  Yikang Xu ,  Xin Liu

IPC分类号： H04L12/56

CPC分类号： H04L63/029 ,  H04L29/12009 ,  H04L29/12509 ,  H04L29/12537 ,  H04L29/12924 ,  H04L61/2567 ,  H04L61/2578 ,  H04L61/6063 ,  H04L67/104 ,  H04L67/14 ,  H04L69/329

摘要： Disclosed are methods that enable communications to be established regardless of the presence of communications blockers, e.g., firewalls and NATs, in the path between two computing devices. Two devices each establish communications with a rendezvous service. Through the service, the devices signal each other to set up direct, peer-to-peer communications between themselves. If the devices fail to establish direct communications, then they invoke a relay service that provides the illusion of direct communications. In another aspect, an originating device attempts to establish communications with a recipient, using an address and port number associated with the recipient. If that attempts fails, possibly because a firewall is blocking communications, then the originating device retries using a port normally held open by firewalls. If this attempt also fails, then the originating device invokes the services of a proxy to negotiate a port acceptable for use by the recipient and by any intervening firewalls.

摘要翻译： 公开了能够建立通信的方法，而不管在两个计算设备之间的路径中是否存在通信阻塞器，例如防火墙和NAT。 两个设备各自建立与会合服务的通信。 通过服务，设备相互信号，建立起彼此直接的对等通信。 如果设备无法建立直接通信，则调用中继服务，提供直接通信的错觉。 在另一方面，始发设备尝试使用与接收者相关联的地址和端口号与接收者建立通信。 如果尝试失败，可能是因为防火墙阻止通信，则始发设备将使用通常由防火墙打开的端口重试。 如果此尝试也失败，则始发设备调用代理服务以协商一个可接受的端口以供任何中间的防火墙使用。

公开(公告)号：US07673001B1

公开(公告)日：2010-03-02

申请号：US10720034

申请日：2003-11-21

申请人： Ryan W. Battle ,  Kenneth Fern ,  Peter Ollodart ,  Austina De Bonte ,  Yikang Xu ,  Christer Lundin

发明人： Ryan W. Battle ,  Kenneth Fern ,  Peter Ollodart ,  Austina De Bonte ,  Yikang Xu ,  Christer Lundin

IPC分类号： G06F15/16

CPC分类号： H04L51/04

摘要： Techniques are described that enable enterprise management of public instant message (IM) communications. When a user requests a connection with a public IM service, the connection request is redirected to a gateway server that is associated with a domain specified in the user's user ID. The gateway server acts as a pass through server between the user's IM client application and the public IM service. The gateway server may be configured to log IM communications in which the user participates. The gateway server may also be configured to control whether or not the user is able to participate in point-to-point communications through the user's IM client application. An enterprise routing server may also be implemented in a geo-distributed enterprise to route a redirected public IM connection request to an enterprise IM gateway server based on a geographic location associated with the user.

摘要翻译： 描述了使企业管理公共即时消息（IM）通信的技术。 当用户请求与公共IM服务的连接时，连接请求被重定向到与用户的用户ID中指定的域相关联的网关服务器。 网关服务器作为用户的IM客户端应用程序和公共IM服务之间的通过服务器。 网关服务器可以被配置为记录用户参与的IM通信。 网关服务器还可以被配置为控制用户是否能够通过用户的IM客户端应用参与点对点通信。 还可以在地理分布式企业中实现企业路由服务器，以基于与用户相关联的地理位置将重定向的公共IM连接请求路由到企业IM网关服务器。

公开(公告)号：US20090164648A1

公开(公告)日：2009-06-25

申请号：US12356096

申请日：2009-01-20

申请人： Yikang Xu ,  Leonard Alan Collins ,  Lon-Chan Chu

发明人： Yikang Xu ,  Leonard Alan Collins ,  Lon-Chan Chu

IPC分类号： G06F15/16

CPC分类号： H04L12/1822 ,  H04L12/1868

摘要： Conferencing data is reliably delivered to computer systems participating in a hierarchically arranged multi-cast conferencing session. When a child computer system does not receive a multi-cast packet (e.g., an IP multi-cast packet), the child computer system sends a negative acknowledgment to a parent computer system. In response, the parent computer system re-transmits conferencing data that was contained in the multi-cast packet to the child computer system. Conferencing data can be re-transmitted to the child computer system via uni-cast (e.g., TCP). Accordingly, conferencing data that is not received or that is damaged via multi-cast can be repaired via uni-cast. Computer systems can join an existing multi-cast conference session without having to communicate with the root computer system. The root computer system adjusts a multi-cast send rate to compensate for changed network conditions.

摘要翻译： 会议数据可靠地传递给参与分层安排的多播会议会话的计算机系统。 当子计算机系统不接收多播分组（例如，IP多播分组）时，子计算机系统向父计算机系统发送否定确认。 作为响应，父计算机系统将包含在多播包中的会议数据重新发送到子计算机系统。 可以通过单播（例如TCP）将会议数据重新发送到子计算机系统。 因此，可以通过单播来修复未被接收或被多播损坏的会议数据。 计算机系统可以加入现有的多播会议会话，而无需与根计算机系统进行通信。 根计算机系统调整多播发送速率以补偿已更改的网络条件。

公开(公告)号：US20080301218A1

公开(公告)日：2008-12-04

申请号：US11756542

申请日：2007-05-31

申请人： Vick B. Mukherjee ,  Yikang Xu ,  John T. Spivey ,  John S. Holmes, III

发明人： Vick B. Mukherjee ,  Yikang Xu ,  John T. Spivey ,  John S. Holmes, III

IPC分类号： H04L29/08

CPC分类号： H04L41/08 ,  H04L51/04 ,  H04L67/24

摘要： A strategy is described for constructing bloom filter information and exception information. The bloom filter information is constructed to express a set of items in a lossy compressed form. The exception information reveals occasions in which the bloom filter information erroneously indicates that a candidate item is a member of the set. The strategy can apply the bloom filter information and the exception information to select a representative device among a group of devices on which a user may maintain simultaneous presence.

摘要翻译： 描述了一种用于构建布隆过滤器信息和异常信息的策略。 绽放滤波器信息被构造为以有损压缩形式表达一组项目。 异常信息揭示了绽放过滤器信息错误地指示候选项是集合的成员的场合。 该策略可以应用布隆过滤器信息和异常信息，以在用户可以保持同时存在的一组设备中选择代表性设备。

公开(公告)号：US08495155B2

公开(公告)日：2013-07-23

申请号：US12714286

申请日：2010-02-26

申请人： Ryan W. Battle ,  Kenneth Fern ,  Peter Ollodart ,  Austina M. De Bonte ,  Yikang Xu ,  Christer Lundin

发明人： Ryan W. Battle ,  Kenneth Fern ,  Peter Ollodart ,  Austina M. De Bonte ,  Yikang Xu ,  Christer Lundin

IPC分类号： G06F15/16

CPC分类号： H04L51/04

摘要： Techniques are described that enable enterprise management of public instant message (IM) communications. When a user requests a connection with a public IM service, the connection request is redirected to a gateway server that is associated with a domain specified in the user's user ID. The gateway server acts as a pass through server between the user's IM client application and the public IM service. The gateway server may be configured to log IM communications in which the user participates. The gateway server may also be configured to control whether or not the user is able to participate in point-to-point communications through the user's IM client application. An enterprise routing server may also be implemented in a geo-distributed enterprise to route a redirected public IM connection request to an enterprise IM gateway server based on a geographic location associated with the user.

摘要翻译： 描述了使企业管理公共即时消息（IM）通信的技术。 当用户请求与公共IM服务的连接时，连接请求被重定向到与用户的用户ID中指定的域相关联的网关服务器。 网关服务器作为用户的IM客户端应用程序和公共IM服务之间的通过服务器。 网关服务器可以被配置为记录用户参与的IM通信。 网关服务器还可以被配置为控制用户是否能够通过用户的IM客户端应用参与点对点通信。 还可以在地理分布式企业中实现企业路由服务器，以基于与用户相关联的地理位置将重定向的公共IM连接请求路由到企业IM网关服务器。