公开(公告)号：US08842160B2

公开(公告)日：2014-09-23

申请号：US13405492

申请日：2012-02-27

Applicant: Ling Niu ,  Timothy M. Moore ,  Shiwei Wang

Inventor： Ling Niu ,  Timothy M. Moore ,  Shiwei Wang

IPC: H04N7/14 ,  H04N7/15

CPC classification number: H04N7/152 ,  H04N7/147 ,  H04N7/148 ,  H04N19/127 ,  H04N19/467

Abstract: Video receiving capabilities of participants and source capabilities are compared and conference capabilities for providing different resolutions, frame rates, bit rate, and number of streams are determined by maintaining a conference receiving capability list updated as number and capability of participants' changes. Preferred receiving capabilities of participants are also taken into account in determining conference characteristics based on comparison with allowed capabilities.

Abstract translation: 比较参与者的视频接收能力和源功能，通过维持会议接收能力列表作为参与者的更改的数量和能力而被更新来确定用于提供不同分辨率，帧速率，比特率和流数量的会议能力。 基于与允许的能力的比较，在确定会议特征时也考虑参与者的首选接收能力。

公开(公告)号：US20130185614A1

公开(公告)日：2013-07-18

申请号：US13350731

申请日：2012-01-13

Applicant: Li Shen ,  Tim Moore ,  Shiwei Wang ,  Tin Qian

Inventor： Li Shen ,  Tim Moore ,  Shiwei Wang ,  Tin Qian

IPC: G06F15/16 ,  G06F11/10 ,  H03M13/05

CPC classification number: H04L1/0057 ,  H03M13/098 ,  H03M13/1515 ,  H03M13/19 ,  H03M13/356 ,  H04L1/0046

Abstract: Systems, methods and computer program products for facilitating the recovery of lost real-time media packets within a computer network real-time application implementing Forward Error Control (FEC), such that server performance is not affected from a CPU and memory perspective, are disclosed. In an embodiment, a conference server that is part of a communication network compliant with the Real Time Transport Protocol (RTP) is able to avoid regenerating FEC packets by not performing any FEC coding operation on the packets unless it is flagged to indicate regeneration via an FEC (e.g., Reed-Solomon) coding is necessary. Absent the flag, the conference server updates the received FEC packet as per the RTP and transmits the packet to its ultimate destination. Such disclosed systems, methods and computer program products are independent of the nature of the media being protected and flexible enough to support a wide variety of FEC techniques.

Abstract translation: 公开了系统，方法和计算机程序产品，用于促进恢复计算机网络中实时转发错误控制（FEC）的实时应用程序中的丢失的实时媒体数据包，使服务器性能不受CPU和存储器的影响。 。 在一个实施例中，作为符合实时传输协议（RTP）的通信网络的一部分的会议服务器能够通过不对分组执行任何FEC编码操作来避免重新生成FEC分组，除非它被标记为指示经由 FEC（例如里德 - 所罗门）编码是必要的。 没有标志，会议服务器根据RTP更新接收的FEC包，并将包发送到其最终目的地。 这样公开的系统，方法和计算机程序产品独立于受保护的媒体的性质并足够灵活以支持各种FEC技术。

公开(公告)号：US08134587B2

公开(公告)日：2012-03-13

申请号：US12034743

申请日：2008-02-21

Applicant: Ling Niu ,  Timothy M. Moore ,  Shiwei Wang

Inventor： Ling Niu ,  Timothy M. Moore ,  Shiwei Wang

IPC: H04N7/14

CPC classification number: H04N7/152 ,  H04N7/147 ,  H04N7/148 ,  H04N19/127 ,  H04N19/467

Abstract: Video receiving capabilities of participants and source capabilities are compared and conference capabilities for providing different resolutions, frame rates, bit rate, and number of streams are determined by maintaining a conference receiving capability list updated as number and capability of participants' changes. Preferred receiving capabilities of participants are also taken into account in determining conference characteristics based on comparison with allowed capabilities.

Abstract translation: 比较参与者的视频接收能力和源功能，通过维持会议接收能力列表作为参与者的更改的数量和能力而被更新来确定用于提供不同分辨率，帧速率，比特率和流数量的会议能力。 基于与允许的能力的比较，在确定会议特征时也考虑参与者的首选接收能力。

公开(公告)号：US20110026448A1

公开(公告)日：2011-02-03

申请号：US12901064

申请日：2010-10-08

Applicant: Qiang Li ,  Yen-Jung Chang ,  Shiwei Wang

Inventor： Qiang Li ,  Yen-Jung Chang ,  Shiwei Wang

IPC: H04L12/56 ,  H04B7/00

CPC classification number: H04L61/2015 ,  H04L12/4625 ,  H04L29/12028 ,  H04L61/103

Abstract: A method for transmitting and receiving a message is provided. The method includes steps of providing a bridge device having a bridge hardware address and a first end, receiving a first message including a first hardware address, a first protocol address and a second protocol address from the first end, recording the first hardware address and the first protocol address on a table, replacing the first hardware address with the bridge hardware address, transmitting the first message to a second end having a second hardware address corresponding to the second protocol address; transmitting a second message including the first protocol address, the second protocol address, the bridge hardware address, and the second hardware address from the second end to the bridge device, replacing the bridge hardware address with the first hardware address according to the table; and transmitting the second message to the first end.

Abstract translation: 提供了一种用于发送和接收消息的方法。 该方法包括以下步骤：提供具有桥接硬件地址和第一端的桥接器件，从第一端接收包括第一硬件地址，第一协议地址和第二协议地址的第一消息，记录第一硬件地址和 将所述第一硬件地址替换为所述桥接器硬件地址，将所述第一消息发送到具有对应于所述第二协议地址的第二硬件地址的第二端; 从所述第二端向所述桥接设备发送包括所述第一协议地址，所述第二协议地址，所述桥接硬件地址和所述第二硬件地址的第二消息，根据所述表替换所述桥接器硬件地址与所述第一硬件地址; 以及将所述第二消息发送到所述第一端。

公开(公告)号：US20100238789A1

公开(公告)日：2010-09-23

申请号：US12406114

申请日：2009-03-18

Applicant: Jingyu Qiu ,  Shiwei Wang ,  Regis J. Crinon ,  Guo-Wei Shieh

Inventor： Jingyu Qiu ,  Shiwei Wang ,  Regis J. Crinon ,  Guo-Wei Shieh

IPC: H04J1/16 ,  H04N7/12

CPC classification number: H04L1/0009 ,  H04L1/1877 ,  H04N21/23106 ,  H04N21/23116 ,  H04N21/44209 ,  H04N21/6375

Abstract: Architecture for enabling a communications endpoint to quickly recover from a packet loss, reducing duration of a signal dropout. A communications component sends a downlink of dependency-structured signals, such as audio and/or video signals using compressed frames between key frames. A multipoint control component (MCC) is located between the communications component and multiple endpoints, and distributes the downlink to the multiple endpoints. A frame caching component caches a key frame of the downlink. If a key frame is lost at one of the endpoints, the endpoint sends a packet loss report to the frame caching component. The key frame is resent from the frame caching component to the endpoint in response to the key frame loss. In this way, the frame caching component can respond to specific frame loss situations on any of the endpoints, without interfering with the performance on the other endpoints.

Abstract translation: 用于使通信端点快速从分组丢失恢复的架构，减少信号丢失的持续时间。 通信组件使用压缩帧在关键帧之间发送依赖结构信号的下行链路，例如音频和/或视频信号。 多点控制组件（MCC）位于通信组件和多个端点之间，并将下行链路分配给多个端点。 帧高速缓存组件缓存下行链路的关键帧。 如果某个端点的关键帧丢失，则端点会向帧高速缓存组件发送丢包报告。 响应于关键帧丢失，关键帧从帧缓存组件重新发送到端点。 以这种方式，帧高速缓存组件可以响应任何端点上的特定帧丢失情况，而不会干扰其他端点的性能。

公开(公告)号：US20100165840A1

公开(公告)日：2010-07-01

申请号：US12346849

申请日：2008-12-31

Applicant: Humayun Mukhtar Khan ,  Renato Machado de Sousa ,  Hiu Hok Chan ,  Shiwei Wang ,  Jiannan Zheng

Inventor： Humayun Mukhtar Khan ,  Renato Machado de Sousa ,  Hiu Hok Chan ,  Shiwei Wang ,  Jiannan Zheng

IPC: G06F11/00

CPC classification number: H04L43/16 ,  H04L43/0829 ,  H04L43/0864

Abstract: Technologies are described herein for detecting and managing congestion on a shared network link. A determination is made whether the shared network link is congested based on loss rate and round-trip time (RTT) between a computer and a receiver operatively coupled by the shared network link. Upon determining that the shared network link is congested, a back-off operation is performed on the computer. The back-off operation may reduce an allocated bandwidth of the computer on the shared network link by transforming a higher allocated bandwidth into a lower allocated bandwidth.

Abstract translation: 这里描述了用于检测和管理共享网络链路上的拥塞的技术。 基于由共享网络链路可操作地耦合的计算机和接收机之间的丢失率和往返时间（RTT），确定共享网络链路是否拥塞。 在确定共享网络链路拥塞时，在计算机上执行退避操作。 退避操作可以通过将较高分配的带宽转换为较低的分配带宽来减少共享网络链路上的计算机的分配的带宽。

公开(公告)号：US07280074B1

公开(公告)日：2007-10-09

申请号：US11394962

申请日：2006-03-30

Applicant: Sheng-Yuan Chi ,  Chia-Bin Yang ,  Shiwei Wang

Inventor： Sheng-Yuan Chi ,  Chia-Bin Yang ,  Shiwei Wang

IPC: H01Q1/38

CPC classification number: H01Q1/243 ,  H01Q1/38 ,  H01Q5/371

Abstract: A multiple frequency band planar antenna formed on one-side surface of a circuit board comprises: a first antenna pattern, a second antenna pattern, a third antenna pattern and a fourth antenna pattern, each antenna pattern further comprising an elongated portion and a conductor portion; wherein the second elongated portion at a point between its two ends is short-circuited to a feeding transmission line formed on another-side surface of the circuit board through a via. Thus, the multiple frequency band planar antenna can operate at three frequency bands with their central frequencies at 2.4 GHz, 3.5 GHz and 5.8 GHz, respectively, suitable for both WIFi LAN and WiMAX MAN applications.

Abstract translation: 形成在电路板的一侧表面上的多频带平面天线包括：第一天线图案，第二天线图案，第三天线图案和第四天线图案，每个天线图案还包括细长部分和导体部分 ; 其中在其两端之间的点处的第二细长部分通过通孔与形成在电路板的另一侧表面上的馈送传输线短路。 因此，多频带平面天线可以分别工作在三个频段，其中心频率分别为2.4GHz，3.5GHz和5.8GHz，适用于WIFi LAN和WiMAX MAN应用。

公开(公告)号：US08819513B2

公开(公告)日：2014-08-26

申请号：US13350731

申请日：2012-01-13

Applicant: Li Shen ,  Tim Moore ,  Shiwei Wang ,  Tin Qian

Inventor： Li Shen ,  Tim Moore ,  Shiwei Wang ,  Tin Qian

IPC: H04L1/18

CPC classification number: H04L1/0057 ,  H03M13/098 ,  H03M13/1515 ,  H03M13/19 ,  H03M13/356 ,  H04L1/0046

Abstract: Systems, methods and computer program products for facilitating the recovery of lost real-time media packets within a computer network real-time application implementing Forward Error Control (FEC), such that server performance is not affected from a CPU and memory perspective, are disclosed. In an embodiment, a conference server that is part of a communication network compliant with the Real Time Transport Protocol (RTP) is able to avoid regenerating FEC packets by not performing any FEC coding operation on the packets unless it is flagged to indicate regeneration via an FEC (e.g., Reed-Solomon) coding is necessary. Absent the flag, the conference server updates the received FEC packet as per the RTP and transmits the packet to its ultimate destination. Such disclosed systems, methods and computer program products are independent of the nature of the media being protected and flexible enough to support a wide variety of FEC techniques.

Abstract translation: 公开了系统，方法和计算机程序产品，用于促进恢复计算机网络中实时转发错误控制（FEC）的实时应用程序中的丢失的实时媒体数据包，使服务器性能不受CPU和存储器的影响。 。 在一个实施例中，作为符合实时传输协议（RTP）的通信网络的一部分的会议服务器能够通过不对分组执行任何FEC编码操作来避免重新生成FEC分组，除非它被标记为指示经由 FEC（例如里德 - 所罗门）编码是必要的。 没有标志，会议服务器根据RTP更新接收的FEC包，并将包发送到其最终目的地。 这样公开的系统，方法和计算机程序产品独立于受保护的媒体的性质并足够灵活以支持各种FEC技术。

公开(公告)号：US20120086815A1

公开(公告)日：2012-04-12

申请号：US12898774

申请日：2010-10-06

Applicant: Stephen C. Cooper ,  Robert A. Farrow ,  Kurt D. Wrisley ,  Tolga Kilicli ,  Walid Ali ,  Shiwei Wang ,  Kevin J. Smith ,  Kandarp Dinesh Jani

Inventor： Stephen C. Cooper ,  Robert A. Farrow ,  Kurt D. Wrisley ,  Tolga Kilicli ,  Walid Ali ,  Shiwei Wang ,  Kevin J. Smith ,  Kandarp Dinesh Jani

IPC: H04N5/225 ,  G06F15/16

CPC classification number: H04L65/60 ,  H04L65/403 ,  H04L65/4092 ,  H04L65/602 ,  H04L65/607 ,  H04L67/2842 ,  H04M3/567 ,  H04N1/00204 ,  H04N5/23206 ,  H04N5/23216 ,  H04N5/23225 ,  H04N7/15 ,  H04N21/23424 ,  H04N21/2343 ,  H04N21/251 ,  H04N2201/0084

Abstract: A device may generate a media stream to be shared with other users by building a media graph, comprising a series of interconnected processing units that perform various processing tasks. However, the time involved in generating the media graph may delay the initialization of the media stream, and adjusting properties of the media stream (such as resolution or codec) may result in an interruption of the media stream while a new media graph is built. Instead, a media graph cache may be provided to cache a set of media graphs, which may be interchangeably selected for rapid initialization and adjusting of media stream properties. The media component (e.g., a video camera) may also be configured to promote rapid adjustments to some media stream properties, while maintaining other properties (e.g., field of view and white balance) for a smooth transition between media stream property sets.

Abstract translation: 设备可以通过构建媒体图形来生成要与其他用户共享的媒体流，该媒体图包括执行各种处理任务的一系列互连的处理单元。 然而，生成媒体图形所涉及的时间可能会延迟媒体流的初始化，并且调整媒体流的属性（例如分辨率或编解码器）可能导致媒体流的中断，同时构建新的媒体图。 相反，可以提供媒体图形缓存以高速缓存一组媒体图形，其可以互换地选择用于快速初始化和调整媒体流属性。 媒体组件（例如，摄像机）还可以被配置为促进对某些媒体流属性的快速调整，同时保持媒体流属性集之间的平滑过渡的其他属性（例如，视场和白平衡）。

公开(公告)号：US20050174943A1

公开(公告)日：2005-08-11

申请号：US11103021

申请日：2005-04-11

Applicant: Shiwei Wang

Inventor： Shiwei Wang

IPC: H04L12/28 ,  H04L12/46 ,  H04L12/56 ,  H04L12/26

CPC classification number: H04W28/08 ,  H04L12/4645 ,  H04L47/10 ,  H04L47/125 ,  H04L47/14 ,  H04L47/2408 ,  H04L47/2433 ,  H04W28/10 ,  H04W84/12

Abstract: A quality of service (QoS) based load-balancing scheme in network communication between a local area network (LAN) and a wireless local area network (WLAN) is provided. The load balancing decision is made by a load balancing module according to traffic conditions and bandwidth availability of each traffic priority class based on a corresponding class of service. The load balancing module also maps an identifier in the LAN to one or more identifiers (BSSIDs or SSIDs) in the WLAN for accommodating the communication between LAN and WLAN for maintaining the quality of service (QoS). The identifier in the LAN can be a VLAN tag at the LAN, or identity of the port, physical address of terminals including MAC address, Token Ring or etc. protocols, or Internet address (IP) according to LAN standards.

Abstract translation: 提供了局域网（LAN）和无线局域网（WLAN）之间的网络通信中的基于服务质量（QoS）的负载平衡方案。 负载均衡决定由负载均衡模块根据流量条件和每个业务优先级的带宽可用性基于相应的业务类别进行。 负载均衡模块还将LAN中的标识符映射到WLAN中的一个或多个标识符（BSSID或SSID），以便容纳LAN和WLAN之间的通信以维持服务质量（QoS）。 LAN中的标识符可以是LAN上的VLAN标签，端口的身份，终端的物理地址，包括MAC地址，令牌环等协议，或根据LAN标准的Internet地址（IP）。