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1. 发明授权

US4893302A Arrangement for switching concentrated telecommunications packet traffic 失效
标题翻译：集中电信分组业务的安排
公开(公告)号：US4893302A
公开(公告)日：1990-01-09
申请号：US175698
申请日：1988-03-31
申请人： Jayant G. Hemmady , Michael J. Knudsen , William P. Lidinsky , Robert K. Nichols , Gaylord W. Richards , Gary A. Roediger , Scott B. Steele , Ronald C. Weddige , Bruce R. Zelle
发明人： Jayant G. Hemmady , Michael J. Knudsen , William P. Lidinsky , Robert K. Nichols , Gaylord W. Richards , Gary A. Roediger , Scott B. Steele , Ronald C. Weddige , Bruce R. Zelle
IPC分类号： H04L12/00 , H04L12/56
CPC分类号： H04L12/00 , H04L12/56
摘要： A high capacity metropolitan area network (MAN) is described. Data traffic from users is connected to data concentrators at the edge of the network, and is transmitted over fiber optic data links to a hub where the data is switched. The hub includes a plurality of data switching modules, each having a control means, and each connected to a distributed control space division switch. Advantageously, the data switching modules, whose inputs are connected to the concentrators, perform all checking and routing functions, while the 1024.times.1024 maximum size space division switch, whose outputs are connected to the concentrators, provides a large fan-out distribution network for reaching many concentrators from each data switching module. Distributed control of the space division switch permits several million connection and disconnection actions to be performed each second, while the pipelined and parallel operation within the control means permits each of the 256 switching modules to process at least 50,000 transactions per second. The data switching modules chain groups of incoming packets destined for a common outlet of the space division switch so that only one connection in that switch is required for transmitting each group of chained packets from a data switching module to a concentrator. MAN provides security features including a port identification supplied by the data concentrators, and a check that each packet is from an authorized source user, transmitting on a port associated with that user, to an authorized destination user that is in the same group (virtual network) as the source user. The data switching modules each use a synchronous data ring for transporting data packets between data link handlers and a plurality of memory access controllers and their associated memory modules.
摘要翻译：描述了高容量城域网（MAN）。来自用户的数据流量连接到网络边缘的数据集中器，并通过光纤数据链路传输到数据交换的集线器。集线器包括多个数据交换模块，每个数据交换模块具有控制装置，并且每个数据交换模块分别连接到分布式控制分区开关。有利的是，其输入连接到集中器的数据交换模块执行所有的检查和布线功能，而1024×1024最大尺寸的空分开关（其输出端连接到集中器）提供了一个大的扇出分配网络来达到许多每个数据交换模块的集中器。空分开关的分布式控制允许每秒执行几百万次连接和断开动作，而控制装置内的流水线和并联操作允许256个开关模块中的每一个处理每秒至少50,000个事务。数据交换模块链接到分组交换机的公共出口的输入分组的组，使得需要该交换机中的一个连接来将每组链接分组从数据交换模块传送到集中器。 MAN提供安全功能，包括由数据集中器提供的端口标识，以及检查每个数据包来自授权的源用户，在与该用户相关联的端口上传输到同一组中的授权目标用户（虚拟网络）作为源用户。数据交换模块各自使用用于在数据链路处理器和多个存储器访问控制器及其相关联的存储器模块之间传送数据分组的同步数据环。

2. 发明授权

US4894824A Control network for a rapid connection circuit switch 失效
公开(公告)号：US4894824A
公开(公告)日：1990-01-16
申请号：US175543
申请日：1988-03-31
申请人： Jayant G. Hemmady , Michael J. Knudsen , Robert K. Nichols , Gaylord W. Richards , Gary A. Roediger
发明人： Jayant G. Hemmady , Michael J. Knudsen , Robert K. Nichols , Gaylord W. Richards , Gary A. Roediger
IPC分类号： H04L12/00 , H04L12/56
CPC分类号： H04L12/56 , H04L12/00
摘要： A high capacity metropolitan area network (MAN) is described. Data traffic from users is connected to data concentrators at the edge of the network, and is transmitted over fiber optic data links to a hub where the data is switched. The hub includes a plurality of data switching modules, each having a control means, and each connected to a distributed control space division switch. Advantageously, the data switching modules, whose inputs are connected to the concentrators, perform all checking and routing functions, while the 1024.times.1024 maximum size space division switch, whose outputs are connected to the concentrators, provides a large fan-out distribution network for reaching many concentrators from each data switching module. Distributed control of the space division switch permits several million connection and disconnection actions to be performed each second, while the pipelined and parallel operation within the control means permits each of the 256 switching modules to process at least 50,000 transactions per second. The data switching modules chain groups of incoming packets destined for a common outlet of the space division switch so that only one connection in that switch is required for transmitting each group of chained packets from a data switching module to a concentrator. MAN provides security features including a port identification supplied by the data concentrators, and a check that each packet is from an authorized source user, transmitting on a port associated with that user, to an authorized destination user that is in the same group (virtual network) as the source user. Distributed control of the space division switch is implemented by dividing that switch into disjoint sets of connection and switching elements and controlling each such set with a different controller. These controllers communicate via a separate control network with the data switching modules which request circuit connections.

3. 发明授权

US4964393A Protective shield for stove 失效
标题翻译：火炉保护罩
公开(公告)号：US4964393A
公开(公告)日：1990-10-23
申请号：US494311
申请日：1990-03-16
申请人： Michael J. Knudsen
发明人： Michael J. Knudsen
IPC分类号： F24C15/36
CPC分类号： F24C15/36
摘要： A shield attachable to a cooking stove to prevent small children from reaching surface burner units or hot cooking containers on the stove top surface. The shield includes an upstanding panel spaced forwardly from the stove and two horizontal plates extending from the lower edge of the panel into a door clearance space along the upper edge of an oven access opening. Screws can be extended through slots in these horizontal plates to rigidly mount the protective shield on the stove.
摘要翻译：可连接到烹饪炉的屏蔽罩，以防止小孩子到达炉灶表面上的表面燃烧器单元或热烹饪容器。护罩包括从炉子向前间隔开的直立面板和两个水平板，从板的下边缘延伸到沿着烤箱进入开口的上边缘的门间隙。螺钉可以通过这些水平板中的槽延伸，以将保护罩刚性地安装在炉子上。

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