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    Composite image display device and service for video conferencing
    1.
    发明授权
    Composite image display device and service for video conferencing 失效
    复合图像显示设备和视频会议服务

    公开(公告)号：US6075571A

    公开(公告)日：2000-06-13

    申请号：US915506

    申请日：1997-07-29

    申请人： Ashok K. Kuthyar ,  Ramarao Pemmaraju ,  Ram S. Mamamurthy ,  Peter H. Stuntebeck

    发明人： Ashok K. Kuthyar ,  Ramarao Pemmaraju ,  Ram S. Mamamurthy ,  Peter H. Stuntebeck

    IPC分类号： H04N7/15 ,  H04N9/74

    CPC分类号： H04N7/15

    摘要： A network-based device creates composite video streams containing video images of users for display on video conferencing screens. Video image streams are cascaded through a series of quad boxes to create combined video streams and ultimately the composite video stream. The composite video stream produces a display grid comprised of a plurality of image boxes. The device uses quad box input port mapping to direct a specific video image stream to a specific image box by controlling the cascade path of each video image stream through the quad boxes in creating the composite video stream. A user interface permits a user to selectively determine the layout of user images on the video conferencing screen. Screen layout extends to size of each user image being incrementally controlled and location of each user image being selectively determined depending upon the size and the number of the various user images. By controlling size and location of each user image, the screen display area available for other uses, such as the display of applications programs, is increased.

    摘要翻译： 基于网络的设备创建包含用户的视频图像的复合视频流，以在视频会议屏幕上显示。 视频图像流通过一系列四方框级联，以创建组合视频流，最终形成复合视频流。 复合视频流产生由多个图像盒组成的显示网格。 该设备使用四方框输入端口映射来将特定视频图像流引导到特定图像盒，通过在创建复合视频流中通过四通道框架控制每个视频图像流的级联路径。 用户界面允许用户选择性地确定视频会议屏幕上用户图像的布局。 屏幕布局延伸到逐渐控制的每个用户图像的大小，并且根据各种用户图像的大小和数量来选择性地确定每个用户图像的位置。 通过控制每个用户图像的大小和位置，增加了可用于其他用途的屏幕显示区域，例如应用程序的显示。

    Method for managing multicast addresses for transmitting and receiving multimedia conferencing information on an internet protocol (IP) network implemented over an ATM network
    5.
    发明授权
    Method for managing multicast addresses for transmitting and receiving multimedia conferencing information on an internet protocol (IP) network implemented over an ATM network 失效
    一种用于管理用于在ATM网络上实现的因特网协议（IP）网络上发送和接收多媒体会议信息的组播地址的方法

    公开(公告)号：US6138144A

    公开(公告)日：2000-10-24

    申请号：US881763

    申请日：1997-06-24

    申请人： Antonio DeSimone ,  Joseph Golan ,  Ashok K. Kuthyar ,  Bryant Richard Parent ,  Ram S. Ramamurthy ,  David Hilton Shur

    发明人： Antonio DeSimone ,  Joseph Golan ,  Ashok K. Kuthyar ,  Bryant Richard Parent ,  Ram S. Ramamurthy ,  David Hilton Shur

    IPC分类号： H04L12/18 ,  H04L29/06 ,  H04L29/12 ,  G06F15/16

    CPC分类号： H04L29/12216 ,  H04L12/18 ,  H04L29/06 ,  H04L29/12018 ,  H04L29/12292 ,  H04L29/12301 ,  H04L29/12924 ,  H04L61/10 ,  H04L61/2007 ,  H04L61/2069 ,  H04L61/2076 ,  H04L61/6063 ,  H04L69/168 ,  H04L29/12047 ,  H04L61/15 ,  H04L69/16

    摘要： In a multicast capable IP network implemented over an ATM network, each client terminal on a multimedia conference, for each media type it transmits, is assigned a multicast IP address and a port number (together known as a socket) on which to transmit packets, wherein each assigned multicast IP address is unique and different than the multicast IP address assigned to any other client for any media type. Each client terminal then selects, for each media type, which clients on the conference it wants to receive packets from. Only packets that are in fact requested by a client are routed over the multicast IP network to the requesting client. A single special purpose Multicast Address Resolution System (MARS) server is associated with the conference when the conference is established. Each client terminal uses that MARS server, whether on the same or different IP sub-networks, but on a common ATM network, for purposes of mapping the multicast IP addresses used in the conference into a set of unicast ATM endpoint addresses used by the ATM-connected client terminals. Similarly, when a specific conference uses a Multicast Server, a single special purpose Multicast Server is used for all clients on the conference, whether on the same or different IP sub-networks, for purposes of establishing point-to-multipoint ATM connections to the conference endpoints.

    摘要翻译： 在通过ATM网络实现的多播能力的IP网络中，对于其发送的每种媒体类型，在多媒体会议上的每个客户端被分配有在其上传送分组的多播IP地址和端口号（一起被称为套接字） 其中每个分配的多播IP地址是唯一的，并且与针对任何媒体类型分配给任何其他客户端的多播IP地址不同。 然后，每个客户端终端针对每种媒体类型选择要在其上接收分组的会议上哪些客户端。 事实上客户端请求的报文只能通过组播IP网络路由到请求客户端。 当会议建立时，单个专用组播地址解析系统（MARS）服务器与会议相关联。 每个客户终端使用该MARS服务器，无论是在相同或不同的IP子网上，但是在公共ATM网络上，用于将会议中使用的组播IP地址映射到由ATM使用的一组单播ATM端点地址 连接的客户终端。 类似地，当特定会议使用多播服务器时，无论是在相同的还是不同的IP子网上，单个专用多播服务器被用于会议上的所有客户端，以便建立到多个组播服务器的点对多点ATM连接 会议端点。

    Packet mode multimedia conferencing services over an ISDN wide area network
    8.
    发明授权
    Packet mode multimedia conferencing services over an ISDN wide area network 失效
    通过ISDN广域网的分组模式多媒体会议业务

    公开(公告)号：US5909431A

    公开(公告)日：1999-06-01

    申请号：US672841

    申请日：1996-06-28

    申请人： Ashok K. Kuthyar ,  Ram S. Ramamurthy ,  Radhika R. Roy

    发明人： Ashok K. Kuthyar ,  Ram S. Ramamurthy ,  Radhika R. Roy

    IPC分类号： H04L29/06 ,  H04N7/15 ,  H04L12/16 ,  H04Q11/00

    CPC分类号： H04L65/1009 ,  H04L29/06 ,  H04L65/4038 ,  H04N7/152 ,  H04L29/06027

    摘要： Real-time multimedia services are transmitted over a hybrid network including a nonguaranteed quality of service packet switched local area network and a circuit switched ISDN wide area network having a centralized multimedia bridge located within the wide area network. The local area networks and multimedia bridge are interconnected via ISDN routers. An algorithm executed by the multimedia bridge receives signals from the packet switched network and detects the absence of properties needed for real-time audio visual services. The data signals are processed to compensate for the absence of the properties and then are transmitted over the wide area network to enable real-time audio visual services.

    摘要翻译： 实时多媒体业务通过混合网络传输，包括非保证业务分组交换局域网质量和具有位于广域网内的集中式多媒体网桥的电路交换ISDN广域网。 局域网和多媒体网桥通过ISDN路由器互连。 由多媒体桥执行的算法从分组交换网络接收信号，并检测到实时视听服务所需的属性不存在。 处理数据信号以补偿不存在的属性，然后通过广域网传输以实现实时视听服务。

    Method for managing multicast addresses for transmitting and receiving multimedia conferencing information on an internet protocol (IP) network
    9.
    发明授权
    Method for managing multicast addresses for transmitting and receiving multimedia conferencing information on an internet protocol (IP) network 失效
    用于管理用于在因特网协议（IP）网络上发送和接收多媒体会议信息的多播地址的方法

    公开(公告)号：US6011782A

    公开(公告)日：2000-01-04

    申请号：US848456

    申请日：1997-05-08

    申请人： Antonio DeSimone ,  Joseph Golan ,  Ashok K. Kuthyar ,  Bryant Richard Parent ,  Ram S. Ramamurthy ,  David Hilton Shur

    发明人： Antonio DeSimone ,  Joseph Golan ,  Ashok K. Kuthyar ,  Bryant Richard Parent ,  Ram S. Ramamurthy ,  David Hilton Shur

    IPC分类号： H04L12/18 ,  H04L29/06 ,  H04L12/16

    CPC分类号： H04L12/1822 ,  H04L69/162 ,  H04L12/1818 ,  H04L69/16

    摘要： In a multicast capable IP network, each client terminal on a multimedia conference, for each media type it transmits, is assigned a multicast IP address and a port number (together known as a socket) on which to transmit packets, wherein each assigned multicast IP address is unique and different than the multicast IP address assigned to any other client for any media type. Each client terminal then selects, for each media type, which clients on the conference it wants to receive packets from. Only packets that are in fact requested by a client are routed over the multicast IP network to the requesting client. When a conference originator establishes the conference, a number of multicast IP addresses are allocated for later assignment to the clients during the conference. As each client joins the conference, it is assigned a multicast IP address from the allocated group for each media type it will transmit. Those assigned addresses are then marked as unavailable for assignment to any other client that subsequently joins the conference. When the original client later exits the conference, its assigned multicast IP address(es) is (are) marked as available for assignment to a later joining client. At the conclusion of the conference, all multicast IP addresses allocated to the conference are marked as available for use in another conference.

    摘要翻译： 在具有多路广播能力的IP网络中，对于其发送的每种媒体类型，在多媒体会议上的每个客户端被分配有在其上传送分组的多播IP地址和端口号（一起称为套接字），其中每个分配的多播IP 地址是唯一的，不同于为任何媒体类型分配给任何其他客户端的组播IP地址。 然后，每个客户端终端针对每种媒体类型选择要在其上接收分组的会议上哪些客户端。 事实上客户端请求的报文只能通过组播IP网络路由到请求客户端。 当会议发起人建立会议时，会议期间分配多个组播IP地址供以后分配给客户端。 随着每个客户端加入会议，从被分配的组中为其将要传输的每个媒体类型分配一个多播IP地址。 那些分配的地址然后被标记为不可用于分配给随后加入会议的任何其他客户端。 当原始客户端稍后退出会议时，其分配的多播IP地址被标记为可用于分配给稍后加入的客户端。 在会议结束时，分配给会议的所有组播IP地址都被标记为可用于另一个会议。