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1.发明授权Technique for computing pathways in a multi-stage switch fabric through exploitation of symmetrical links 有权通过开发对称链路在多级交换机结构中计算路径的技术公开(公告)号：US07167481B2
公开(公告)日：2007-01-23
申请号：US10119765
申请日：2002-04-11
申请人： David C. Steele , Jeff J. Towers , Andrew King
发明人： David C. Steele , Jeff J. Towers , Andrew King
CPC分类号： H04L49/254 , H04L49/1515 , H04L49/256
摘要： A switch fabric for switching data traffic according to a plurality of links. The data traffic may convey audio information, video information, or any other type of information. The switch fabric includes input, output and at least one intermediate stages, each stage including a plurality of switching elements. The switching elements of the input and output stages respectively have external input and output ports. The switch fabric further includes a switch fabric controller. The switch fabric controller includes a link database including information about the plurality of links. The switch fabric controller is operative to search the link database to identify symmetrical links and to establish internal pathways between the input stage and the output stage through the at least one intermediate stage, wherein at least two symmetrical links identified by the searching are realized using a common switching element of the at least one intermediate stage.
摘要翻译： 一种用于根据多个链路切换数据流量的交换结构。 数据业务可以传送音频信息，视频信息或任何其他类型的信息。 交换结构包括输入，输出和至少一个中间级，每个级包括多个开关元件。 输入和输出级的开关元件分别具有外部输入和输出端口。 交换结构还包括交换结构控制器。 交换结构控制器包括包括关于多个链路的信息的链路数据库。 交换结构控制器可操作以搜索链路数据库以识别对称链路，并且通过至少一个中间级在输入级和输出级之间建立内部路径，其中通过搜索标识的至少两个对称链路是使用 所述至少一个中间级的公共开关元件。
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公开(公告)号：US06859453B1
公开(公告)日：2005-02-22
申请号：US09739003
申请日：2000-12-19
申请人： LeRoy L. Pick , David C. Steele , Evert E. Deboer
发明人： LeRoy L. Pick , David C. Steele , Evert E. Deboer
CPC分类号： H04J3/1611
摘要： Methods, apparatuses, media and signals for providing clear channel access on a network are disclosed. A first method involves receiving a communication signal from a remote network element. The communication signal includes a previous transport overhead (PTOH) portion indicative of transport overhead contents of the communication signal prior to arrival at the remote network element, and a previous path error (PPE) portion indicative of path errors present in the communication signal at the remote network element. The method then involves modifying a transport overhead portion of the communication signal in response to the PTOH and PPE portions. A second method involves inserting into a communication signal received at a network element, a previous transport overhead (PTOH) portion indicative of transport overhead contents of the communication signal prior to arrival at the network element, and a previous path error (PPE) portion indicative of path errors present in the communication signal at the network element. The second method then involves transmitting the communication signal to a remote device.
摘要翻译： 公开了用于在网络上提供清晰信道访问的方法，设备，媒体和信号。 第一种方法涉及从远程网络元件接收通信信号。 通信信号包括指示在到达远程网络元件之前的通信信号的传输开销内容的先前传输开销（PTOH）部分，以及指示存在于通信信号中的通信信号中的路径错误的先前路径错误（PPE）部分 远程网元。 该方法然后涉及响应于PTOH和PPE部分修改通信信号的传输开销部分。 第二种方法涉及插入到在网络元件处接收到的通信信号中，先前传输开销（PTOH）部分指示在到达网络元件之前的通信信号的传输开销内容，以及指示的先前的路径错误（PPE）部分 存在于网络元件的通信信号中的路径错误。 然后，第二种方法涉及将通信信号发送到远程设备。
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公开(公告)号：US4547767A
公开(公告)日：1985-10-15
申请号：US540331
申请日：1983-10-11
申请人： David C. Steele
发明人： David C. Steele
CPC分类号： H05K3/4046 , G08B23/00 , G08B25/008 , H05K1/029 , H05K1/117 , H05K3/222 , H05K1/0266 , H05K2201/09172 , H05K2201/10053 , H05K2201/10386
摘要： A printed circuit board including a dielectric material having first and second major surfaces, a predetermined number of electrical conductors attached to the major surfaces, a plurality of slots in the board, the slots beginning at the free edge of the board and continuing inwardly for a predetermined length, a portion of the electrical conductors lying parallel and adjacent to a portion of the longitudinal axis of the slots on both of the major surfaces, and a "U" shaped current carrying connector inserted into one of the slots the terminal free edges thereof in mechanical engagement with a preselected conductor of the first surface and a preselected conductor of the second surface forming an electrical path there between.
摘要翻译： 一种印刷电路板，包括具有第一主表面和第二主表面的电介质材料，连接到主表面的预定数量的电导体，所述板中的多个槽，所述槽从所述板的自由边缘开始并向内延伸以用于 电导体的一部分平行并邻近两个主表面上的狭槽的纵向轴线的一部分，以及插入其中一个狭槽中的“U”形载流连接器，其端部自由边缘 与所述第一表面的预选导体机械接合，并且所述第二表面的预选导体在其之间形成电路径。
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公开(公告)号：USD312221S
公开(公告)日：1990-11-20
申请号：US263611
申请日：1988-10-27
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公开(公告)号：US5621387A
公开(公告)日：1997-04-15
申请号：US512664
申请日：1995-08-08
CPC分类号： G08B29/10
摘要： A box for covering components or the like and for preventing unwanted access thereto. The box comprises a mounting panel having a pair of opposed sides, a top portion, a bottom portion and a back portion. The back portion is adapted to receive a fastener for mounting the mounting panel to a mounting surface. A cover fastener is received within the mounting panel. A slot is formed in the mounting panel and a corresponding tang is located within the cover which is adapted to receive an alarm device therein and removably envelop the mounting panel. A second opening is located in the cover for receiving the cover fastener when said mounting panel is enveloped within the cover. The slot and the tang selectively movably cooperate with each other to enable the cover to initially envelop the mounting panel and subsequently secure the cover to the mounting panel as the cover fastener draws the cover toward the mounting panel, preventing the cover from being removed from the mounting panel without removal of the cover fastener. A circuit board is mounted within one of the mounting panel and the cover and is biased toward an ARMED position. The circuit board and the cover fastener cooperate to detect unauthorized tampering or attempts to remove the cover from the wall. When such activity is detected, an alarm electrically connected to the circuit board is activated.
摘要翻译： 用于覆盖组件等并用于防止对其的不期望的访问的框。 盒子包括具有一对相对侧的安装板，顶部，底部和后部。 后部适于接收用于将安装面板安装到安装表面的紧固件。 盖紧固件被接收在安装面板内。 在安装面板上形成槽，并且相应的柄脚位于盖内，适于在其中容纳报警装置并且可移除地包围安装面板。 当所述安装面板被包封在盖中时，第二开口位于盖中用于接收盖紧固件。 狭槽和脚可选择性地可移动地彼此协作，以使得盖能够最初包围安装面板，随后当盖紧固件将盖朝向安装面板时将盖固定到安装面板上，防止盖从 安装面板而不拆除盖紧固件。 电路板安装在安装面板和盖子之一内，并朝向ARMED位置偏置。 电路板和盖紧固件配合以检测未经授权的篡改或试图从墙上移除盖。 当检测到这种活动时，电连接到电路板的警报被激活。
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公开(公告)号：US4949372A
公开(公告)日：1990-08-14
申请号：US269636
申请日：1988-11-09
申请人： David C. Steele
发明人： David C. Steele
摘要： A remote actuated command circuit establishes telephone communications between a communications device at a remote location and a local communications terminal device without interference from a telephone answering machine connected to the incoming telephone line. The remote actuated command circuit establishes these communications when it receives from the remote communications device a predetermined signal not normally available to a telephone user.
摘要翻译： 远程致动指令电路在远程位置的通信设备与本地通信终端设备之间建立电话通信，而不受连接到接入电话线路的电话应答机的干扰。 当远程致动指令电路从远程通信设备接收到电话用户通常不可用的预定信号时，建立这些通信。
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7.发明授权Apparatus and method for protecting the contacts of an electrical switch from current surges 失效用于保护电气开关的触点免受电流浪涌的装置和方法
公开(公告)号：US4847719A
公开(公告)日：1989-07-11
申请号：US153997
申请日：1988-02-09
申请人： Max W. Cook , Wade E. Moose , David C. Steele
发明人： Max W. Cook , Wade E. Moose , David C. Steele
CPC分类号： G08B13/08 , G08B29/18 , H02H7/222 , H01H3/001 , H01H36/0006
摘要： The contacts of an electrical switch, such as a magnetic contact reed switch or a magnetic contact reed relay used in a burglar alarm system, are protected from being fused together by transient current surges. This protection is accomplished by providing a normally nonconductive shunting path in parallel with the switch. The shunting path includes a voltage responsive device which is biased to conduction in response to a current surge to thereby complete the shunting path and allow the current surge to bypass the switch.
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