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    • 4. 发明授权
    • Composite image display device and service for video conferencing
    • 复合图像显示设备和视频会议服务
    • US6075571A
    • 2000-06-13
    • US915506
    • 1997-07-29
    • Ashok K. KuthyarRamarao PemmarajuRam S. MamamurthyPeter H. Stuntebeck
    • Ashok K. KuthyarRamarao PemmarajuRam S. MamamurthyPeter H. Stuntebeck
    • H04N7/15H04N9/74
    • H04N7/15
    • 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.
    • 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。
    • 7. 发明授权
    • Mobile MAC protocol for LAN-coupled devices interconnected by an ATM wide area network
    • 通过ATM广域网互连的LAN耦合设备的移动MAC协议
    • US06606323B1
    • 2003-08-12
    • US09224469
    • 1998-12-31
    • Ram S. RamamurthyRadhika R. RoyPeter H. Stuntebeck
    • Ram S. RamamurthyRadhika R. RoyPeter H. Stuntebeck
    • H04L1228
    • H04L12/4608H04L12/5601H04L29/12009H04L29/12018H04L61/10H04L2012/5607H04L2012/5617
    • Enhanced performance of a WAN is achieved by allowing devices to move from LAN to LAN and have the move be transparent to end user applications. This is accomplished by allowing devices to move, with no action being taken in response to a move. Instead, notice is taken of the LANE Emulation Client (LEC) address at which a device can be reached when the device that moved chooses to communicate with some other device. In such a device initiates communication, a table is updated in a LAN Emulation Server (LES), which is an entity maintained by the WAN that interconnects a number of LECs. A similar table is maintained in each LEC, and the table of each LEC is updated whenever a connection is made between one of its devices and some other device. At times, of course, a LEC would have an incorrect address of a sought destination device. In such a case, the LEC sends a query to the LES, and the LES provides what the LES believes to be the correct LEC address. When the LES cannot resolve an address, a message is broadcast to the LES entities of other “emulated LANs,” or ELANs, which contains their own LES entities, and those LES entities have an opportunity to provide the correct address.
    • 通过允许设备从LAN移动到LAN并使终端用户应用程序的移动变得透明,可以实现WAN的增强性能。 这是通过允许设备移动来实现的,而不采取动作来响应移动。 取而代之的是,当移动设备选择与其他设备通信时,会注意到LANE仿真客户端(LEC)地址可以到达设备。 在这种设备中启动通信时,在LAN仿真服务器(LES)中更新一个表,该仿真服务器是连接多个LEC的由WAN维护的实体。 在每个LEC中保持类似的表,并且每当在其设备和其他设备之间进行连接时,更新每个LEC的表。 有时候,LEC会有一个不正确的寻址目标设备的地址。 在这种情况下,LEC向LES发送查询,LES提供LES认为是正确的LEC地址。 当LES无法解析地址时,会向其他“仿真LAN”的LES实体或包含其自己的LES实体的ELAN广播消息,并且这些LES实体有机会提供正确的地址。
    • 10. 发明授权
    • Proxy apparatus and method for streaming media information and for increasing the quality of stored media information
    • 用于流媒体信息和用于提高存储的媒体信息的质量的代理装置和方法
    • US07565415B1
    • 2009-07-21
    • US12021552
    • 2008-01-29
    • Robert Edward MarkowitzJoseph Thomas O'NeilKenneth H. RosenPeter H. Stuntebeck
    • Robert Edward MarkowitzJoseph Thomas O'NeilKenneth H. RosenPeter H. Stuntebeck
    • G06F15/16
    • H04L65/60H04N21/222H04N21/2265H04N21/23113H04N21/23439H04N21/25833H04N21/2662H04N21/6377H04N21/658H04N21/6581
    • A proxy apparatus and method for streaming media information via at least one network and for building-up a good quality version of the media information. When a user device communicates with the proxy apparatus using a particular bandwidth and requests that media information be provided from a media server, the proxy apparatus first determines if a version of the media information encoded for the user device's connection bandwidth has been stored in the proxy apparatus. If a version of the media information encoded for the user device's bandwidth is not available from the proxy apparatus, the proxy apparatus sends a request to a media server for the media information. Once the media server receives the request, the media server begins to stream a copy of the media information encoded for the user device's bandwidth to the user device via the network and proxy device. If a version of the media information for the bandwidth is not available from the media server, the version for the largest bandwidth that does not exceed the bandwidth of the user device connection, is streamed to the user device. If the version of the media information has missing packets, the proxy device sends retransmission requests to the media server to obtain the missing packets, thereby building-up a good quality version of the media information.
    • 一种用于经由至少一个网络流式传输媒体信息并用于建立媒体信息的高质量版本的代理装置和方法。 当用户设备使用特定带宽与代理设备进行通信并请求从媒体服务器提供媒体信息时,代理设备首先确定为用户设备的连接带宽编码的媒体信息的版本是否已被存储在代理中 仪器。 如果针对用户设备的带宽编码的媒体信息的版本不能从代理设备获得,则代理设备向媒体服务器发送针对媒体信息的请求。 一旦媒体服务器接收到请求,媒体服务器开始通过网络和代理设备将用户设备带宽编码的媒体信息的副本流传输给用户设备。 如果媒体服务器不能获得带宽媒体信息的版本,则将不超过用户设备连接带宽的最大带宽的版本流传输到用户设备。 如果媒体信息的版本丢失了报文,则代理设备向媒体服务器发送重发请求,获取丢失的报文,从而构建出高质量的媒体信息。