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1. 发明授权

US6043991A Card panel having a bracket with integrally formed track for an EMI reduction spring 失效
标题翻译：卡片板具有用于EMI减少弹簧的整体形成的轨道的支架
公开(公告)号：US6043991A
公开(公告)日：2000-03-28
申请号：US99790
申请日：1998-06-18
申请人： Gregory L. Sorrentino
发明人： Gregory L. Sorrentino
IPC分类号： H05K9/00
CPC分类号： H05K9/0016
摘要： A card panel includes a conductive bracket and a circuit board coupled to the bracket. The bracket includes a front side, and first and second lateral sides. The board is coupled to an inner surface of the first side of the bracket, while an outer surface of the first side operates as a conductive contact. The outer surface of the second side of the bracket includes an integrally molded T-shaped track, and a hole at each end of the track. An elongate conductive spring having a generally triangular cross-section with two inwardly directed lower flanges and a raised portion is positioned on the track such that each of the lower flanges is held by track and further such that the ends of the spring are positioned between the holes in the track. Rivets are provided in the holes and maintaining the spring on the track. The integrally molded track permits easy installation of the spring to the bracket. The integration of the components provides an assembly having relatively few components and a relatively low cost. Moreover, the molded track is relatively straight, stiff, and more resistant to damage than prior art spring assemblies. As such, the spring has a more uniform compression and is held flat and straight against the bracket. Electromagnetic interference is thereby reduced. Furthermore, should the spring become damaged, the rivets securing the spring may be easily removed to facilitate replacement of the spring.
摘要翻译：卡片面板包括导电支架和联接到支架的电路板。支架包括前侧，以及第一和第二侧面。板被耦合到支架的第一侧的内表面，而第一侧的外表面作为导电接触。支架的第二侧的外表面包括整体模制的T形轨道和轨道每端的孔。具有大致三角形横截面并具有两个向内指向的下凸缘和凸起部分的细长导电弹簧定位在轨道上，使得每个下凸缘由轨道保持，并且进一步使得弹簧的端部位于轨道上的孔。铆钉设置在孔中并将弹簧保持在轨道上。整体模制的轨道允许将弹簧容易地安装到支架上。组件的集成提供了具有相对较少组件并且成本相对较低的组件。此外，模制轨道相比直线，刚性，并且比现有技术的弹簧组件更能抵抗损坏。因此，弹簧具有更均匀的压缩，并且保持平坦且相对于支架直线。从而减小电磁干扰。此外，如果弹簧被损坏，固定弹簧的铆钉可以容易地移除以便于更换弹簧。

2. 发明授权

US06028840A Method and apparatus for connection admission control of variable bit rate traffic in ATM switch 失效
标题翻译： ATM交换机中可变比特率流量连接准入控制的方法和装置
公开(公告)号：US06028840A
公开(公告)日：2000-02-22
申请号：US942021
申请日：1997-10-01
申请人： Thomas Worster
发明人： Thomas Worster
IPC分类号： H04L12/56 , H04M3/00 , G01R31/08 , G06F11/00
CPC分类号： H04L12/5695 , H04L47/15 , H04L47/822 , H04L47/823 , H04M3/00
摘要： A connection admission control system for the link of an ATM switch generally includes a system for accepting a proposed call if the tangent effective bandwidth, a conservative approximation for the bandwidth, of the proposed call when added to the sum of the tangent effective bandwidths of all other calls being handled by that link are less than the capacity of the link is less than the capacity of the link. The proposed call may also be accepted if the zero-loss effective bandwidth for the proposed call when added to the sum of the zero-loss effective bandwidths of all other calls being handled by that link is less than the capacity of the link. The tangent effective bandwidths and zero-loss effective bandwidths are calculated off of the switch by a processor and stored in a table at the switch. When a call request is received it is placed into a connection class, and the tangent effective bandwidth and zero-loss effective bandwidth relating to that connection class is found in the table.
摘要翻译：用于ATM交换机的链路的连接准入控制系统通常包括用于接收所提出的呼叫的系统，如果将所提出的呼叫的切线有效带宽（对带宽的保守近似）加到所有呼叫的切线有效带宽之和由该链路处理的其他呼叫小于链路的容量小于链路的容量。如果在被添加到由该链路处理的所有其他呼叫的零损失有效带宽的总和之中时，所提出的呼叫的零丢失有效带宽小于链路的容量，则所提出的呼叫也可以被接受。切线有效带宽和零损耗有效带宽由处理器从交换机计算出来并存储在交换机的表中。当接收到呼叫请求时，它被放置在连接类中，并且在表中找到与该连接类相关的切线有效带宽和零损耗有效带宽。

3. 发明授权

US5943321A Circuit set-up and caching for multimedia multipoint servers 失效
标题翻译：多媒体多点服务器的电路设置和缓存
公开(公告)号：US5943321A
公开(公告)日：1999-08-24
申请号：US915496
申请日：1997-08-20
申请人： Marc St-Hilaire , Yonik Breton , Pierre Brisson , Sylvain Labelle
发明人： Marc St-Hilaire , Yonik Breton , Pierre Brisson , Sylvain Labelle
IPC分类号： H04N7/15 , H04L12/16 , H04M1/66 , H04N7/14 , H04Q11/00
CPC分类号： H04N7/152
摘要： An MMS circuit set-up system includes a real time link manager (RTLM) which is coupled to the audio video controller (AVC) of the MMS. The AVC receives data from the MMS reservation system about the starting and ending times for conferences and sends commands to the RTLM to set up connections for the conference. The RTLM is provided with a database of configuration and location information about remote sites and has access to the resource database of one or more ATM switches and/or other networking equipment. The RTLM sends configuration messages to ATM switches and/or other networking equipment in order to set up a conference. According to a presently preferred embodiment, the ATM switches are controlled by the RTLM using SNMP (simple network management protocol) via an ETHERNET.TM. connection to the slot controllers of the ATM switches and networking equipment which does not support SNMP are controlled by the RTLM using TCP/IP (transaction control protocol/internet protocol) via an ETHERNET.TM. connection to the servers. The ATM circuits are preferably created by adding entries to an SPVC table in the ATM switch. According to one aspect of the invention, when ATM circuits are no longer needed, the SPVC table entries are not deleted, but the status for the circuit is marked "idle". This allows the circuit to be reused with minimal set-up time when it is again needed.
摘要翻译： MMS电路设置系统包括耦合到MMS的音频视频控制器（AVC）的实时链路管理器（RTLM）。 AVC从MMS预留系统接收关于会议的开始和结束时间的数据，并向RTLM发送命令以建立会议的连接。 RTLM被提供有关于远程站点的配置和位置信息的数据库，并且可以访问一个或多个ATM交换机和/或其他网络设备的资源数据库。 RTLM向ATM交换机和/或其他网络设备发送配置消息，以建立会议。根据目前优选的实施例，ATM交换机通过使用SNMP（简单网络管理协议）的RTLM通过ETHERNET TM连接到ATM交换机的时隙控制器和不支持SNMP的网络设备来控制，RTLM使用 TCP / IP（事务控制协议/互联网协议）通过ETHERNET TM连接到服务器。优选地，ATM电路通过将条目添加到ATM交换机中的SPVC表来创建。根据本发明的一个方面，当不再需要ATM电路时，不删除SPVC表项，而是将该电路的状态标记为“空闲”。这样就可以在再次需要时以最小的设置时间重新使用电路。

4. 发明授权

US5825816A Spectral and power shaping mapper for high data rate signalling 失效
标题翻译：用于高数据速率信号的光谱和功率整形映射器
公开(公告)号：US5825816A
公开(公告)日：1998-10-20
申请号：US851597
申请日：1997-05-05
申请人： Paul Dana Cole , Yuri Goldstein , Yuri Okunev
发明人： Paul Dana Cole , Yuri Goldstein , Yuri Okunev
IPC分类号： H04B14/02 , H04L25/49 , H04L27/34 , H04B1/38
CPC分类号： H04L27/3411 , H04B14/023 , H04L25/4927
摘要： A spectral and power shaping mapper for high data rate signaling modem is provided. Based on data rates and other criteria, groups of incoming bits are grouped together, with a first subgroup of bits being used to generate two sign vectors, a second subgroup of bits being used in conjunction with an appended bit to generate two magnitude manipulation vectors, and a third subgroup of bits being used in a modulus converter to generate a plurality of quotients (r.sub.k). The quotients and magnitude manipulation vectors are used to select two or more sequences of constellation points from a multidimensional constellation. The sequences of selected points are combined with the sign vectors to generate four sequences of octets for a shaping selector. The shaping selector, preferably in the form of a convolutional encoder state machine uses criteria such as lowest cost paths and/or lowest average power in order to select which sequence of octets to output.
摘要翻译：提供了一种用于高数据速率信号调制解调器的频谱和功率整形映射器。基于数据速率和其他标准，输入比特组被分组在一起，其中第一子比特组用于生成两个符号向量，第二子比特组与附加比特结合使用以产生两个幅度操纵向量，并且在模数转换器中使用第三子比特组来产生多个商（rk）。商和幅度操纵向量用于从多维星座中选择两个或更多个星座点序列。所选点的序列与符号向量组合以产生用于整形选择器的四个八位字节序列。成形选择器优选地以卷积编码器状态机的形式使用诸如最低成本路径和/或最低平均功率之类的标准，以便选择要输出哪个八位位组序列。

5. 发明授权

US5781529A Systems and methods for routing ATM switched virtual circuit calls 失效
标题翻译：用于路由ATM交换虚拟电路呼叫的系统和方法
公开(公告)号：US5781529A
公开(公告)日：1998-07-14
申请号：US624812
申请日：1996-03-27
申请人： Chung C. Liang , Javier R. Rojas , Kuldip S. Bains
发明人： Chung C. Liang , Javier R. Rojas , Kuldip S. Bains
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04L49/3081 , H04L49/253 , H04L49/255 , H04Q11/0478 , H04L2012/563 , H04L49/30
摘要： The invention routes SVC ATM call setups by utilizing one of a plurality of designated transit lists (DTLs) stored at an originating node. The DTLs describe all routes in the network from the originating node to endpoint destinations. When a call setup message is received at the originating node, it inserts a desired DTL as an information element (IE) of the setup message. Each DTL is formatted as a concatenation of elements with each element including the node ID and output ports of each successive node in the route. Preferably, each element of the DTL includes flags such as a "process" flag which indicates whether an element of the DTL has been processed by a node, a "link up" flag which indicates that an alternative route is available between two nodes should the preferred route be down, a "bandwidth" flag which allows the alternate link to be used if the preferred link is busy, and a "last node" flag which is used in the last element of the concatenated DTL. If the "last node" flag is not set, the destination node internally generates a route ID as the last element based on the destination address specified in an IE for the call. As the DTL IE is passed from node to node along the connection path, the receiving node inserts the input port at which it received the call setup message as well as a VPI/VCI into its element of the DTL. At its destination, the DTL is attached to a CONNECT request message which is returned to the source node.
摘要翻译：本发明通过利用存储在始发节点的多个指定转接列表（DTL）中的一个来路由SVC ATM呼叫建立。 DTL描述了从始发节点到端点目的地的网络中的所有路由。当在始发节点接收到呼叫建立消息时，它插入期望的DTL作为建立消息的信息元素（IE）。每个DTL被格式化为每个元素的级联，每个元素包括路由中每个连续节点的节点ID和输出端口。优选地，DTL的每个元素包括诸如表示DTL的元素是否已被节点处理的“进程”标志的标志，指示替代路由在两个节点之间可用的“链路向上”标志，如果优先路由被关闭，如果优选链路忙时允许使用替代链路的“带宽”标志，以及在级联DTL的最后一个元素中使用的“最后一个节点”标志。如果未设置“最后节点”标志，则目的地节点根据用于该呼叫的IE中指定的目的地地址内部生成路由ID作为最后一个元素。当DTL IE沿着连接路径从节点传递到节点时，接收节点将其接收呼叫建立消息的输入端口以及VPI / VCI插入到其DTL的元素中。在其目的地，DTL附加到返回到源节点的CONNECT请求消息。

6. 发明授权

US5615211A Time division multiplexed backplane with packet mode capability 失效
标题翻译：具有分组模式能力的时分复用背板
公开(公告)号：US5615211A
公开(公告)日：1997-03-25
申请号：US532888
申请日：1995-09-22
申请人： Peter M. Santore , John M. O'Neil, Jr.
发明人： Peter M. Santore , John M. O'Neil, Jr.
IPC分类号： H04L12/56 , H04L12/64
CPC分类号： H04L49/102 , H04L12/6402 , H04L49/254 , H04L49/351
摘要： An integrated TDM-based/packet-based telecommunications backplane system includes a multi-bit backplane bus, a plurality of TDM data modules and packet based data modules coupled to the backplane bus, and a frame controller coupled to the bus which generates a frame by pre-assigning a first plurality of timeslots of a frame for the fixed rate TDM traffic, and allotting the remainder of the frame timeslots as a pool for packet-based traffic. The TDM data modules, which can include bit, and byte or nibble mode modules, place data on the backplane bus in their allotted time slots. The packet-based data modules contend for the pooled timeslots by raising a request on a "request" thread of the backplane bus when the packet module has a packet to send, and dropping the request and raising a busy flag on the "busy" thread while sending a data packet. In order to insure that only one packet-based data module will attempt to raise the request flag at a given time, the pooled timeslots are divided among the packet data sources for purposes of raising the request flag only. Thus, only one packet-based data module can raise its request flag during a given timeslot of the pool; although when sending data, the packet-based data module can send during all timeslots of the pool.
摘要翻译：集成的基于TDM的/基于分组的电信背板系统包括耦合到背板总线的多位背板总线，多个TDM数据模块和基于分组的数据模块，以及耦合到总线的帧控制器，其通过为固定速率TDM业务预分配帧的第一多个时隙，以及将所述帧时隙的剩余部分分配为用于基于分组的业务的池。可以包括位和字节或半字节模式的TDM数据模块在其分配的时隙中将数据放置在背板总线上。基于分组的数据模块通过在分组模块具有要发送的分组的情况下通过背板总线的“请求”线程提出请求来竞争合并的时隙，并且在“忙”线程上丢弃请求并提出忙标志同时发送数据包。为了确保在给定时间只有一个基于分组的数据模块将尝试提出请求标志，为了提高请求标志的目的，合并的时隙在分组数据源之间被划分。因此，只有一个基于分组的数据模块可以在池的给定时隙中提出其请求标志; 虽然发送数据时，基于数据包的数据模块可以在池的所有时隙中发送。

7. 发明授权

US5524107A Multiport multidrop digital system 失效
标题翻译：多端口多点数字系统
公开(公告)号：US5524107A
公开(公告)日：1996-06-04
申请号：US196173
申请日：1994-05-02
申请人： Robert J. Duggan , Tat N. Ho
发明人： Robert J. Duggan , Tat N. Ho
IPC分类号： H04J3/06 , H04L12/52 , H04J3/14
CPC分类号： H04L12/52 , H04J3/0682
摘要： A polled digital multiport, multidrop system is described. The inbound frame for sending information from remote terminals to the host terminals is arranged such that a plurality of bytes are provided by a first terminal, followed by a guard band, followed by a plurality of bytes provided by a second terminal, followed by another guard band, etc. The guard band permits signalling between the DSU and the OCU which in turn permits the OCU to signal the MJU that no data will be coming from the OCU. In this manner, control mode idle is accomplished and data mode idle is avoided. In addition, because of the guard band, if the delay from a remote site changes, no data will be lost. Means for monitoring the system to follow changes in delay are also provided, and the system can cause a remote location to accommodate a change in delay.
摘要翻译： PCT No.PCT / US92 / 07030 Sec。 371日期：1994年5月2日 102（e）日期1994年5月2日PCT提交1992年8月21日PCT公布。第WO93 / 04541号公报日期：1993年3月4日。描述了一种轮询数字多端口多点系统。用于从远程终端发送信息到主机终端的入站帧被布置成使得多个字节由第一终端提供，后面是保护频带，后面是由第二终端提供的多个字节，随后是另一个保护频带等。保护频段允许DSU和OCU之间的信令，这又允许OCU向MJU发信号通知没有数据将来自OCU。以这种方式，实现了控制模式空闲并且避免了数据模式空闲。另外，由于保护频段，如果来自远程站点的延迟发生变化，则不会丢失任何数据。还提供了用于监视系统以跟随延迟变化的手段，并且系统可以使远程位置适应延迟的改变。

8. 发明授权

US5394440A High speed modem systems incorporating distribution preserving Tomlinson encoding and decoding for secondary channels 失效
标题翻译：高速调制解调器系统采用分布式保护汤姆林森编码和解码辅助通道
公开(公告)号：US5394440A
公开(公告)日：1995-02-28
申请号：US837490
申请日：1992-02-18
申请人： Yuri Goldstein , Paul D. Cole
发明人： Yuri Goldstein , Paul D. Cole
IPC分类号： H03M7/14 , H03M13/25 , H04B3/04 , H04L25/03 , H04L25/49 , H04L27/34 , H04L5/12
CPC分类号： H03M13/25 , H03M13/256 , H04L25/03343 , H04L25/49 , H04L25/4975 , H04L27/34 , H04L27/3461 , H04L2025/03802
摘要： Apparatus and methods in both modem transmitters and receivers are provided for accommodating secondary channel data without disturbing the trellis encoding, mapping, and Viterbi decoding of primary channel data, and without disturbing distribution preserving Tomlinson precoding and decoding of the primary channel data. In order to accommodate the secondary channel data, the secondary channel data are used to make quadrant decisions in a mapper, and concurrently therewith, dummy data or tertiary channel data corresponding in time with the secondary channel data are provided to the trellis encoder so that the continuous working of the trellis encoder can be maintained. In order to guarantee proper working of the trellis encoder, and to guarantee reliability of the secondary channel data, the secondary channel constellation points within a quadrant are clustered together and far from the quadrant boundaries, the selected points in each quadrant are the rotations of selected points in the other quadrants, and the points include a single point from each two-dimensional partition element of the 2 D grid in each quadrant. With primary, secondary, and tertiary data encoded in this manner, the encoded data are precoded according to Tomlinson precoding or according to any of several disclosed distribution preserving Tomlinson techniques. Decoding is dictated by the manner in which the primary and secondary data were encoded and precoded.
摘要翻译：提供调制解调器发送器和接收器中的装置和方法用于容纳次级信道数据，而不会干扰主信道数据的网格编码，映射和维特比解码，并且不干扰分配，保留对主信道数据的汤姆林森预编码和解码。为了适应辅助信道数据，辅助信道数据用于在映射器中进行象限判定，并且与此同时，将与辅助信道数据对应的伪数据或第三信道数据提供给网格编码器，使得可以保持网格编码器的连续工作。为了保证网格编码器的正常工作，并保证二次通道数据的可靠性，象限内的二次通道星座点聚集在一起，远离象限边界，每个象限中的选定点都是选定的旋转点在其他象限中，点包括每个象限中的二维网格的每个二维分割元素的单个点。以这种方式编码的主要，次要和第三数据，编码数据根据汤姆林森预编码或根据保护汤姆林森技术的几种公开分布中的任何一种进行预编码。解码由主要和次要数据被编码和预编码的方式决定。

9. 发明授权

US5331672A Automatic detector and selector of RS-232 or V.35 interface 失效
标题翻译： RS-232或V.35接口的自动检测器和选择器
公开(公告)号：US5331672A
公开(公告)日：1994-07-19
申请号：US727822
申请日：1991-07-09
申请人： Patrick A. Evans , Eugene Vellucci, Jr.
发明人： Patrick A. Evans , Eugene Vellucci, Jr.
IPC分类号： H04L27/00 , H04L23/00
CPC分类号： H04L27/0008
摘要： An automatic detection and selection circuit resident in a DCE is provided. The circuit is coupled to the DCE interface connector and detects receipt by the DCE of V.35 and RS-232 transmit data signals, distinguishes between those signals, and selects circuitry for passing the data therethrough. The circuit comprises a switch coupled to a first TX data terminal (pin 2 or P) of the DCE interface connector, first and second line receiving circuits, a microprocessor, and a relay. The first line receiving circuit is coupled to a first pole of the switch and to the second TX data terminal (pin S) of the DCE interface connector and provides indications as to whether or not an input signal is present at at least one of pins P and S. The second line receiving circuit is coupled to the second pole of the switch and provides indications as to whether or not a valid RS-232 transmit data signal is detected. The microprocessor is coupled to the outputs of the line receiving circuits, and based on the indications output thereby, appropriately controls the relay, and hence the switch. The microprocessor first checks in a V.35 mode as to whether a data signal is being received. It then checks in a RS-232 mode as to whether the data signal is a valid RS-232 signal. If not, it switches the circuit back to the V.35 mode.
摘要翻译：提供驻留在DCE中的自动检测和选择电路。该电路耦合到DCE接口连接器，并检测到DCE接收到V.35和RS-232发送数据信号，区分这些信号，并选择用于传递数据的电路。电路包括耦合到DCE接口连接器的第一TX数据端（引脚2或P），第一和第二线路接收电路，微处理器和继电器的开关。第一行接收电路耦合到开关的第一极和DCE接口连接器的第二TX数据端（引脚S），并提供关于输入信号是否存在于引脚P中的至少一个的指示和第二线路接收电路耦合到开关的第二极，并提供关于是否检测到有效的RS-232发送数据信号的指示。微处理器耦合到线路接收电路的输出，并且由此基于指示输出，适当地控制继电器，并因此适当地控制开关。微处理器首先检查V.35模式是否正在接收数据信号。然后它检查RS-232模式是否数据信号是有效的RS-232信号。如果不是，则将电路切换回V.35模式。

10. 发明授权

US5260971A Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals 失效
标题翻译：在数字数据信号传输中使用分配保存到milinson预编码的装置和方法
公开(公告)号：US5260971A
公开(公告)日：1993-11-09
申请号：US651563
申请日：1991-02-06
申请人： Paul D. Cole
发明人： Paul D. Cole
IPC分类号： H03M13/25 , H04L25/03 , H04L25/49
CPC分类号： H04L25/4975 , H03M13/25 , H04L25/03343 , H04L25/49 , H04L2025/03802
摘要： A transmitter is provided with a distribution preserving Tomlinson coder which predistorts shaped data signals such that the power of each data signal exiting the coder is substantially similar to the power of the data signal entering the coder and such that upon transmission of the predistorted data signal over a channel, the effect of ISI of the channel is substantially removed. The transmitter is primarily intended for coded modulation systems utilizing a "coset" code, and the predistortion is preferably accomplished according to a linear function ##EQU1## where r.sub.k is a data signal entering the coder, a.sub.l and b.sub.l are the coefficients of polynomials relating to the channel impulse response, x.sub.k is the predistorted data signal exiting the coder, and s.sub.k is a multiple of a given value (N) which is chosen to cause x.sub.k and r.sub.k to occupy identical defined regions in space, where the total length of each defined region is the given value N. One and two dimensional regions are disclosed which are chosen in several ways. Receivers which cooperate with the provided transmitters are also provided. The receivers receive a sequence of signals, and process the sequence to provide a sequence of signals whose k'th term is an estimate of r.sub.k -s.sub.k. From the estimate of r.sub.k -s.sub.k, the receiver generates an estimate of x.sub.k by multiplying the received estimate by the channel ISI. From the estimate of x.sub.k and the estimate of r.sub.k -s.sub.k, the receiver determines the particular value of s.sub.k, and hence the value of an estimate of r.sub.k.
摘要翻译：发射机设置有分布保留Tomlinson编码器，其预失真成形数据信号，使得离开编码器的每个数据信号的功率基本上类似于进入编码器的数据信号的功率，并且使得在传输预失真数据信号之后一个通道，通道的ISI的效果被大大地消除。发射机主要用于利用“陪集”码的编码调制系统，并且预失真优选地根据线性函数“IMAGE”来完成，其中rk是进入编码器的数据信号，a1和b1是与信道脉冲响应xk是离开编码器的预失真数据信号，而sk是给定值（N）的倍数，其被选择为使得xk和rk占据空间中相同的定义区域，其中每个定义的总长度区域是给定值N.公开一个和二维区域，其以多种方式选择。还提供与所提供的发射机配合的接收机。接收器接收信号序列，并处理该序列以提供第k个项是rk-sk的估计的信号序列。从rk-sk的估计，接收机通过将接收到的估计乘以信道ISI来生成x k的估计。从xk的估计和rk-sk的估计，接收器确定sk的特定值，因此确定rk的估计值。

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