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1. 发明授权

US5195086A Multiple call control method in a multimedia conferencing system 失效
标题翻译：多媒体会议系统中的多个呼叫控制方法
公开(公告)号：US5195086A
公开(公告)日：1993-03-16
申请号：US509010
申请日：1990-04-12
申请人： Thomas J. Baumgartner , Yeou H. Hwang , Edith H. Jones , Wu-Hon F. Leung , Lara F. Morgan , Shi-Chuan Tu
发明人： Thomas J. Baumgartner , Yeou H. Hwang , Edith H. Jones , Wu-Hon F. Leung , Lara F. Morgan , Shi-Chuan Tu
IPC分类号： H04L12/18 , H04M3/42 , H04M3/56
CPC分类号： H04M3/567 , H04L12/1813 , H04M3/42221 , H04M3/563 , Y10S379/908
摘要： A method for use in a multimedia conferencing arrangement to control multiple concurrent calls where each call comprises one or more channels. A first call among a first set of user stations and a second call among a second set of user stations are merged into a single call comprising a plurality of channels among at least three user stations from the first and second sets. The plurality of channels of the single, merged call corresponds to a combination of channels of the first and second calls and may include a signalling channel, a voice channel, and one data channel for each data channel of the first and second calls. The method is also applicable to calls including image or video channels.

2. 发明授权

US5103444A Conference connection method in a multicast packet switching network 失效
标题翻译：组播分组交换网络中的会议连接方式
公开(公告)号：US5103444A
公开(公告)日：1992-04-07
申请号：US508866
申请日：1990-04-12
申请人： Wu-Hon F. Leung , Shi-Chuan Tu
发明人： Wu-Hon F. Leung , Shi-Chuan Tu
IPC分类号： H04L12/18 , H04M3/56
CPC分类号： H04L12/1813 , H04M3/561 , H04M3/562 , H04L12/1881
摘要： A conference connection method for use in a multicast packet switching network. Once the packet switches and inter-switch links to comprise a multicast connection among three or more endpoints are determined, a check is performed to determine whether that multicast connection would to usable to effect communication in accordance with a specified transmission matrix and meeting a packet sequencing condition. The multicast connection is established only when the check indicates that the connection would meet both requirements.
摘要翻译：一种用于组播分组交换网络的会议连接方法。一旦确定了分组交换和交换机间链路以构成三个或更多个端点之间的多播连接，则执行检查以确定该多播连接是否可用于根据指定的传输矩阵进行通信并且满足分组排序条件。仅当检查表明连接满足两个要求时才建立组播连接。

3. 发明授权

US5163156A Method for distributing messages through a mapping table which includes for each originating device a sequential list of corresponding destination devices 失效
标题翻译：用于通过映射表分发消息的方法，其包括对于每个发起设备的相应目的地设备的顺序列表
公开(公告)号：US5163156A
公开(公告)日：1992-11-10
申请号：US496063
申请日：1990-03-16
申请人： Wu-Hon F. Leung , Gottfried W. R. Luderer , Michael J. Morgan , Philip R. Roberts , Shi-Chuan Tu
发明人： Wu-Hon F. Leung , Gottfried W. R. Luderer , Michael J. Morgan , Philip R. Roberts , Shi-Chuan Tu
IPC分类号： G06F15/167
CPC分类号： G06F15/167
摘要： Control of communication by a plurality of devices, such as computer programs and terminals, via a computer is controlled by an arrangement referred to as a connector. The connector receives a request for communication defining the devices to the communication and, in response to the request, establishes a mapping table defining the source devices and destination devices to the connection. A source device stores data in connector memory and the connector reads the mapping table to determine the destination devices for the stored data. The connector then creates a linked list coupling structure between the stored data and the determined destination devices. The destination devices issue read commands to which the connector responds by reading the stored data in accordance with the coupling structure and providing that data to the requesting device.
摘要翻译：通过计算机通过诸如计算机程序和终端的多个设备的通信的控制由被称为连接器的布置来控制。连接器接收对通信定义设备的通信请求，并且响应于该请求，建立将源设备和目的设备定义到该连接的映射表。源设备将数据存储在连接器存储器中，并且连接器读取映射表以确定存储的数据的目的地设备。然后，连接器在存储的数据和确定的目的地设备之间创建链接列表耦合结构。目的地设备通过根据耦合结构读取存储的数据来发出连接器响应的读取命令，并将该数据提供给请求设备。

4. 发明授权

US4905231A Multi-media virtual circuit 失效
标题翻译：多媒体虚拟电路
公开(公告)号：US4905231A
公开(公告)日：1990-02-27
申请号：US189851
申请日：1988-05-03
申请人： Wu-Hon F. Leung , Michael J. Morgan , Shi-Chuan Tu
发明人： Wu-Hon F. Leung , Michael J. Morgan , Shi-Chuan Tu
IPC分类号： H04L12/56
CPC分类号： H04L12/56
摘要： A packet switch arrangement in which a first plurality of user devices is connected to a packet network by a first interface unit and a second plurality of user devices is connected to the packet network by a second interface unit. A virtual circuit is established between the interface units and control information is exchanged over the virtual circuit. The control information defines virtual channels on the virtual circuit and ones of the first and second pluralities of user devices which are to be sources and destinations for data in the defined virtual channels. Data from user devices is packetized and transmitted in the virtual channels by the interface units in accordance with the exchanged control information. Further, packets received in virtual channels on the virtual circuit are distributed to user devices by the interface units in accordance with exchanged control information.
摘要翻译：一种分组交换装置，其中第一多个用户设备由第一接口单元和第二多个用户设备连接到分组网络，其通过第二接口单元连接到分组网络。在接口单元之间建立虚拟电路，并通过虚拟电路交换控制信息。控制信息定义虚拟电路上的虚拟通道，以及作为定义的虚拟通道中的数据的源和目的地的第一和第二多个用户设备中的虚拟通道。来自用户设备的数据根据所交换的控制信息由接口单元在虚拟信道中进行分组和发送。此外，根据所交换的控制信息，通过接口单元将在虚拟电路上的虚拟通道中接收的分组分发给用户设备。

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