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1. 发明授权

US5422877A Dual bus switching 失效
标题翻译：双总线切换
公开(公告)号：US5422877A
公开(公告)日：1995-06-06
申请号：US70129
申请日：1993-06-01
申请人： David C. Brajczewski , James P. Towey, Jr.
发明人： David C. Brajczewski , James P. Towey, Jr.
IPC分类号： B66B1/18 , B66B3/00 , G06F11/20 , H04B1/74 , H04L1/22 , H04L12/40 , H04L29/14 , H04Q11/00 , H04J15/00
CPC分类号： H04L12/40163 , G06F11/2007 , H04L12/40 , H04L69/40 , H04L12/4625
摘要： A multiplexer receives a message from a first bus and a message from a second bus, wherein a preamble is received at the head of each message, compares the preamble from each bus against an ideal preamble and, prior to receiving the next bit in either message, provides to a transceiver the message which is least noisy as indicated by the comparison; if the preamble in the message on the bus presently selected for reception by the transceiver does not compare favorably with the ideal preamble, the message from the other bus is selected.
摘要翻译：多路复用器从第一总线接收消息和来自第二总线的消息，其中在每个消息的头部处接收前导码，将来自每个总线的前导码与理想前同步码进行比较，并且在接收任一消息中的下一个比特之前向收发机提供如比较所指示的噪声最小的消息; 如果总线上当前选择用于由收发器接收的总线中的消息中的前导码与理想前同步码不相比较，则选择来自另一总线的消息。

2. 发明授权

US5360952A Local area network eleveator communications network 失效
标题翻译：局域网升级通信网
公开(公告)号：US5360952A
公开(公告)日：1994-11-01
申请号：US70128
申请日：1993-06-01
申请人： David C. Brajczewski , Bertram F. Kupersmith , James P. Towey, Jr.
发明人： David C. Brajczewski , Bertram F. Kupersmith , James P. Towey, Jr.
IPC分类号： B66B1/18 , B66B1/34 , B66B3/00 , H04L12/28 , H04L12/46 , H04L13/10
CPC分类号： B66B1/3415 , B66B1/34 , B66B1/3446 , B66B1/3453 , H04L12/28 , H04L12/46
摘要： A LAN elevator network includes (a) a pair of redundant car buses for exchanging signals with car control system elements, (b) a pair of redundant group buses for exchanging signals with the redundant car buses by means of a car-group bridge, and (c) with a pair of redundant building buses, which exchange messages with a building controller, by means of a group-building bridge. Communication among all nodes on the car bus, group bus, and building bus occurs by means of a single protocol. Each communications element on a bus communicates with the bus by means of a communications coprocessor including a transmitter and a receiver.
摘要翻译： LAN电梯网络包括（a）一对用于与汽车控制系统元件交换信号的冗余车辆总线，（b）一对冗余组总线，用于通过轿厢组桥与冗余汽车总线交换信号;以及（c）有一对冗余的建筑巴士，通过一个集体建设桥梁与建筑物控制人交换信息。汽车总线，组总线和建筑总线上的所有节点之间的通信通过单一协议进行。总线上的每个通信元件通过包括发射器和接收器的通信协处理器与总线通信。

3. 发明授权

US5914957A Automatic node configuration with identical nodes 失效
标题翻译：具有相同节点的自动节点配置
公开(公告)号：US5914957A
公开(公告)日：1999-06-22
申请号：US772036
申请日：1996-12-19
申请人： Alexander G. Dean , Bhargavender P. Upender , David C. Brajczewski
发明人： Alexander G. Dean , Bhargavender P. Upender , David C. Brajczewski
IPC分类号： B66B3/00 , G06F13/42 , H04J1/08 , H04L12/403 , H04L29/12 , H04L12/40
CPC分类号： H04L61/2038 , G06F13/4256 , H04L12/403 , H04L29/12254
摘要： A node configuration system with identical nodes includes a master 10 connected to a plurality of identical servant nodes 12-18 through a shared communication link (or bus) 20 and an unshared communication link (daisy-chain) (28,34,38,44,48). The master 16 assigns a unique identifier to each of the servant nodes 12-18, sequentially and individually, in a clockwise (CW) direction by sending configuration messages on the shared bus and configuration enable signals on the unshared link. The process begins with the master setting its configuration enable signal (CW-Cout port 24) to one and broadcasting a configuration message on the bus 20, which configures the servant node 12. As each servant node is configured, it sets its CW-Cout port to one which enables the next node in the chain to be configured. This process continues until all the servants 12-18 have been configured. In the event of a fault, the master 10 attempts to configure the remaining servant nodes in the counter-clockwise (CCW) direction.
摘要翻译：具有相同节点的节点配置系统包括通过共享通信链路（或总线）20和非共享通信链路（菊花链）连接到多个相同服务节点12-18的主机10（28,34,38,44 ，48）。主机16通过在共享总线上发送配置消息和非共享链路上的配置使能信号，以顺时针（CW）方向顺序地和单独地顺序地和单独地为每个服务节点12-18分配唯一的标识符。该过程从主设备将其配置使能信号（CW-Cout端口24）设置为1，并在总线20上广播配置消息，该配置消息配置服务节点12.当配置每个服务节点时，它将其CW-Cout 端口到一个可以配置链中的下一个节点的端口。这个过程继续，直到所有的服务器12-18都被配置。在发生故障的情况下，主站10尝试以逆时针（CCW）方向配置剩余的服务节点。

4. 发明授权

US5535212A Implicit token media access protocol without collision detection 失效
标题翻译：隐含令牌介质访问协议，无冲突检测
公开(公告)号：US5535212A
公开(公告)日：1996-07-09
申请号：US189944
申请日：1994-01-31
申请人： Philip J. Koopman , David C. Brajczewski
发明人： Philip J. Koopman , David C. Brajczewski
IPC分类号： H04J3/06 , H04L12/417 , H04L5/22
CPC分类号： H04L12/417 , H04J3/0638
摘要： If a transceiver has a message to send during an idle medium condition, it transmits a jam pattern onto the medium for a predetermined time (based on maximum network propagation delay). If a transceiver detects a jamming pattern, it inhibits its own transmissions and waits for the next slot progression. If multiple transceivers begin jamming within a propagation delay of each other (within the network vulnerable time), their jamming transmissions will not destructively interfere with each other. When jamming ceases, all transceivers begin a slot progression. Thus, the end of the jamming period when all transceivers have finished jamming serves as a network-wide synchronization for the start of an implicit token slot progression.
摘要翻译：如果收发器具有在空闲介质条件下发送的消息，则其将干扰模式发送到介质上预定时间（基于最大网络传播延迟）。如果收发器检测到干扰模式，它会禁止自己的传输，并等待下一个时隙的进行。如果多个收发器在彼此的传播延迟之内（在网络脆弱的时间内）开始干扰，则它们的干扰传输将不会相互干扰。当干扰停止时，所有收发器开始插槽进展。因此，当所有收发器已经完成干扰时，干扰周期的结束用作开始隐式令牌槽进程的全网同步。

5. 发明授权

US5854454A Message routing in control area network (CAN) protocol 失效
标题翻译：控制区域网络（CAN）协议中的消息路由
公开(公告)号：US5854454A
公开(公告)日：1998-12-29
申请号：US714647
申请日：1996-09-16
申请人： Bhargavender P. Upender , David C. Brajczewski , Alexander G. Dean , Stephen A. Hatzirallis
发明人： Bhargavender P. Upender , David C. Brajczewski , Alexander G. Dean , Stephen A. Hatzirallis
IPC分类号： H04L12/413 , B66B1/28 , G01R31/08 , H04Q5/22
CPC分类号： H04L12/40163 , H04L12/4135 , H04L2012/40215
摘要： A hierarchial elevator control system (FIG. 2) utilizes standard Control Area Network (CAN) hardware and message protocols. A broadcast message format includes priority bits and source address bits in subfields within the standard CAN message identifier field, to separate priority levels from message type information, while maintaining collision avoidance by means of the source addresses. In a unicast message format, message response by individual receiving nodes is accomplished with simple standard CAN hardware filtering by providing, within the standard CAN message identifier field, a multi-bit destination address field to identify a unique receiving node to which the message is directed. In the unicast format, remote transmission requests are identified by a control bit in the standard CAN data field, and responded to utilizing a message-type field that is also in the data field portion of the message.
摘要翻译：分级电梯控制系统（图2）利用标准控制区域网络（CAN）硬件和消息协议。广播消息格式包括在标准CAN消息标识符字段内的子字段中的优先级位和源地址位，以便在通过源地址保持冲突避免的同时，将优先级与消息类型信息分开。在单播消息格式中，通过简单的标准CAN硬件过滤，通过在标准CAN消息标识符字段内提供多位目的地地址字段来识别消息所指向的唯一接收节点来实现各个接收节点的消息响应。在单播格式中，远程传输请求由标准CAN数据字段中的控制位标识，并且利用也在消息的数据字段部分中的消息类型字段进行响应。

6. 发明授权

US5450404A Explicit and implicit token media access protocol with multi-level bus arbitration 失效
标题翻译：具有多级总线仲裁的显式和隐式令牌介质访问协议
公开(公告)号：US5450404A
公开(公告)日：1995-09-12
申请号：US992878
申请日：1992-12-21
申请人： Philip J. Koopman , David C. Brajczewski
发明人： Philip J. Koopman , David C. Brajczewski
IPC分类号： H04J3/06 , H04L12/417 , H04L5/22
CPC分类号： H04L12/417 , H04J3/0638
摘要： Primary implicit token slots (that is, token slots following a message or jam used to restart network activity) are assigned to multiple transceivers. When a transceiver assigned to a shared slot has data to transmit, it emits a jamming signal instead of a message in its token slot. This jamming signal serves as a synchronization for a second implicit token slot progression in which only transceivers sharing the primary level implicit token slot participate.
摘要翻译：主要隐式令牌插槽（即，用于重新启动网络活动的消息或卡纸后的令牌插槽）分配给多个收发器。当分配给共享时隙的收发器具有要发送的数据时，它发出干扰信号，而不是其令牌时隙中的消息。该干扰信号用作第二隐式令牌槽进程的同步，其中只有共享主级隐含令牌槽的收发器参与。

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