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1. 发明授权

US5553095A Method and apparatus for exchanging different classes of data during different time intervals 失效
标题翻译：用于在不同时间间隔内交换不同类别数据的方法和装置
公开(公告)号：US5553095A
公开(公告)日：1996-09-03
申请号：US54582
申请日：1993-04-28
申请人： Jonathan R. Engdahl , David J. Gee , Mark A. Lucak , Shawn L. Adams
发明人： Jonathan R. Engdahl , David J. Gee , Mark A. Lucak , Shawn L. Adams
IPC分类号： G05B19/042 , H04L12/417 , H04B1/38 , H04J3/02
CPC分类号： H04L12/40013 , G05B19/0421 , H04L12/40143 , H04L12/4035 , H04L12/40026 , H04L12/407
摘要： A digital communication network carries high and low priority data. The network stations that produce high priority data are assigned to a first group of stations and stations that produce low priority data are assigned to a second group with the two group not being mutually exclusive. Activity on the network is divided into periodic intervals of the same duration. Network control information, that defines how access to the medium, is determined is broadcast to all stations during a first segment of a periodic interval. The network control information defines the length of the periodic interval and of the periodic interval segments, and defines how many stations are in each group. Then during a second segment of the periodic interval, every station in the first group is afforded an opportunity, in a predefined order, to transmit high priority data over the medium. Stations in the second group are afforded an opportunity to transmit low priority data, when time remains after the first segment in a periodic interval before the network control information will be transmitted again. The specific station in the second group which is afforded an opportuinity to transmit first changes from periodic interval to periodic interval.
摘要翻译：数字通信网络承载高优先级数据和低优先级数据。产生高优先级数据的网络站被分配给第一组站，并且产生低优先级数据的站被分配给具有两个组不相互排斥的第二组。网络上的活动划分为相同持续时间的周期性间隔。在定期间隔的第一段期间，广播所有站的网络控制信息，其定义如何访问介质。网络控制信息定义周期性间隔和周期性间隔段的长度，并定义每组中的站数。然后在周期性间隔的第二段期间，第一组中的每个站以预定义的顺序提供通过介质传送高优先级数据的机会。在再次发送网络控制信息之前，第二组中的站点可以传送低优先级数据，时间保持在第一段之后的周期性间隔。第二组中的特定站提供了从周期性间隔向周期性间隔发送第一次更改的机会。

2. 发明授权

US5471461A Digital communication network with a moderator station election process 失效
标题翻译：数字通信网络与主持人选举过程
公开(公告)号：US5471461A
公开(公告)日：1995-11-28
申请号：US54581
申请日：1993-04-28
申请人： Jonathan R. Engdahl , Mark A. Lucak , David J. Gee , Paul Kucharski
发明人： Jonathan R. Engdahl , Mark A. Lucak , David J. Gee , Paul Kucharski
IPC分类号： G05B19/042 , H04L12/24 , H04L12/407
CPC分类号： H04L12/4035 , G05B19/0421 , H04L12/24 , H04L41/00 , H04L12/407
摘要： A moderator on a communication network periodically transmits a set of parameters for a protocol that is used to communicate over the network. Each node on the network compares the set of protocol parameters from the moderator to a set of parameters stored in that node. If the sets of parameters at a given node do not match, that given node ceases transmitting messages over the network until either the set of protocol parameters from the moderator match the stored set of parameters, or a matching set of parameters is stored in the node. Typically the active node that is assigned the lowest numerical network address functions as the moderator. However, an automatic process is utilized to prevent a node with a non-matching set of the protocol parameters from becoming the moderator for more than a brief period of time. An override procedure is provided to force all the nodes on the network to adopt a common set of protocol parameters in the event that the automatic process fails.
摘要翻译：通信网络上的主持人周期性地发送用于通过网络通信的协议的一组参数。网络上的每个节点将来自主持人的协议参数集合与存储在该节点中的一组参数进行比较。如果给定节点上的参数集合不匹配，则该给定节点停止通过网络发送消息，直到来自主持人的一组协议参数与存储的参数集匹配，或者将一组匹配的参数存储在节点中。通常，分配最低数字网络地址的主动节点用作主持人。然而，使用自动处理来防止具有协议参数的不匹配集合的节点在短时间内成为主持人。在自动进程失败的情况下，提供覆盖程序以强制网络上的所有节点采用一组公共协议参数。

3. 发明授权

US5400331A Communication network interface with screeners for incoming messages 失效
标题翻译：通信网络接口，带有入门消息的筛选器
公开(公告)号：US5400331A
公开(公告)日：1995-03-21
申请号：US54944
申请日：1993-04-28
申请人： Mark A. Lucak , Jonathan R. Engdahl , David J. Gee , Hassan A. Chami , Donald S. Pieronek
发明人： Mark A. Lucak , Jonathan R. Engdahl , David J. Gee , Hassan A. Chami , Donald S. Pieronek
IPC分类号： H04L12/18 , H04L29/06 , H04J3/02 , H04L12/56
CPC分类号： H04L29/06
摘要： Each message carried by a communication network has a packet that contains data, a tag, and a generation count wherein duplicate packets sent in different messages have identical generation counts. A station includes a modem that connects to the communication network in order to receive messages. A fixed screener circuit has a first memory that stores a set of tag values and a fixed screener determines when a packet tag matches a tag value in the first memory. The station also has an interface through which tag values are received from an external device, such as a host computer. A general purpose screener includes a second memory with a plurality of storage locations in which to store tag values from the interface and a generation count associated with each tag value. A first comparator in the general purpose screener determines when a tag contained in a packet matches a tag value in the second memory, and a second comparator determines when a generation count in the packet matches the generation count in the second memory that is associated with the matching tag value. A control circuit produces a signal when the first comparator indicates a tag match and the second comparator indicates that the generation counts do not match. The station ignores the packet in the absence of the signal.
摘要翻译：由通信网络携带的每个消息具有包含数据，标签和生成计数的分组，其中在不同消息中发送的重复分组具有相同的生成计数。站点包括连接到通信网络以便接收消息的调制解调器。固定筛选器电路具有存储一组标签值的第一存储器，并且固定筛选器确定分组标签何时与第一存储器中的标签值匹配。该站还具有从诸如主机的外部设备接收标签值的接口。通用筛选器包括具有多个存储位置的第二存储器，其中存储来自接口的标签值和与每个标签值相关联的生成计数。通用筛选器中的第一比较器确定包含在分组中的标签何时与第二存储器中的标签值匹配，并且第二比较器确定分组中的生成计数何时与第二存储器中的生成计数匹配，匹配标签值。当第一比较器指示标签匹配并且第二比较器指示生成计数不匹配时，控制电路产生信号。在没有信号的情况下，电台忽略数据包。

4. 发明授权

US5537549A Communication network with time coordinated station activity by time slot and periodic interval number 失效
标题翻译：具有通过时隙和周期间隔数的时间协调站活动的通信网络
公开(公告)号：US5537549A
公开(公告)日：1996-07-16
申请号：US54323
申请日：1993-04-28
申请人： David J. Gee , Mark A. Lucak , Jonathan R. Engdahl , Timothy Siorek
发明人： David J. Gee , Mark A. Lucak , Jonathan R. Engdahl , Timothy Siorek
IPC分类号： G05B19/042 , H04L12/417 , G06F13/372 , H04J3/16
CPC分类号： H04L12/40032 , G05B19/0421 , H04L12/4035 , H04L12/417 , H04L12/40026 , H04L12/407 , H04L2012/4026
摘要： Activity on a digital communication network is divided into periodic intervals and during a segment of each periodic interval a moderator station broadcasts a numerical count of the periodic intervals to all stations on the network. Each station has a memory in which a numerical value is stored, and a comparator that compares the numerical value to the numerical count received from the network. When the numerical count of the periodic intervals equals the numerical value, an apparatus within the station performs a defined operation, such as transmitting a message over the network or synchronizing a clock in the station to a master time standard. The equality of the periodic interval count and the numerical value also can be used to determine when to signal an external device. By using the count of the periodic intervals in this manner, the operation of several stations on the network can be coordinated.
摘要翻译：数字通信网络上的活动被划分为周期性间隔，并且在每个周期性间隔的段期间，主持人站向网络上的所有站广播周期性间隔的数字计数。每个站具有存储数值的存储器，以及将数值与从网络接收的数值进行比较的比较器。当周期性间隔的数值等于数值时，站内的装置执行定义的操作，例如通过网络发送消息或将站中的时钟同步到主时间标准。周期性间隔计数和数值的相等也可以用于确定何时向外部设备发信号。通过以这种方式使用周期性间隔的计数，可以协调网络上的几个站的操作。

5. 发明授权

US5493571A Apparatus and method for digital communications with improved delimiter detection 失效
标题翻译：用于具有改进的定界符检测的数字通信的装置和方法
公开(公告)号：US5493571A
公开(公告)日：1996-02-20
申请号：US54400
申请日：1993-04-28
申请人： Jonathan R. Engdahl , Michael A. Bush , Lawrence W. Esker , Mark A. Lucak , David J. Gee
发明人： Jonathan R. Engdahl , Michael A. Bush , Lawrence W. Esker , Mark A. Lucak , David J. Gee
IPC分类号： H04L7/04 , H04L7/10 , H04L12/417 , H04L25/49 , H04L29/06 , H04J3/06 , H04L7/00
CPC分类号： H04L12/4035 , H04L12/417 , H04L25/4904 , H04L29/06 , H04L7/041 , H04L12/407 , H04L7/10
摘要： A node circuit is operative to couple Manchester encoded data between a transmission medium and an associated electrical device. A first mechanism detects a message frame preamble having a pattern of alternating signal level of substantially identical duration, and a second mechanism that detects a start delimiter in the message frame. The start delimiter has a plurality of binary signal levels in a unique pattern that satisfies a defined set of criteria to optimize the probability that the pattern will be detected while minimizing the likelihood that random valid data will alias into the start delimiter pattern. A data decoder is provided to convert the Manchester encoded data into binary data which then is sent via a signal path to the associated electrical device. Another mechanism is included to detect a unique end delimiter that signals the termination of the message frame.
摘要翻译：节点电路可操作以在传输介质和相关联的电气设备之间耦合曼彻斯特编码数据。第一机制检测具有基本相同持续时间的交替信号电平的模式的消息帧前同步码，以及检测消息帧中的起始定界符的第二机制。起始分隔符具有独特模式中的多个二进制信号电平，其满足定义的准则集以优化将被检测到模式的概率，同时使随机有效数据将别名到起始定界符模式的可能性最小化。提供数据解码器以将曼彻斯特编码的数据转换成二进制数据，然后将其经由信号路径发送到相关联的电气设备。包括另一种机制来检测信号终止消息帧的唯一终结分隔符。

6. 发明授权

US5283869A Interrupt structure for network interface circuit 失效
标题翻译：网络接口电路的中断结构
公开(公告)号：US5283869A
公开(公告)日：1994-02-01
申请号：US384614
申请日：1989-07-25
申请人： Shawn L. Adams , Jonathan R. Engdahl
发明人： Shawn L. Adams , Jonathan R. Engdahl
IPC分类号： H04L29/04 , G06F13/24 , H04L29/06 , G06F9/00 , H04J3/24
CPC分类号： G06F13/24
摘要： A communications interface circuit couples a host processor to a pair of serial communications links. A shared memory is employed to pass message data and network management data between the host and the interface circuit, and each can interrupt the other through interrupt control lines. The shared memory stores a handshake segment that includes interrupt flags and acknowledge flags which enable a large number of different interrupt events to be efficiently serviced.
摘要翻译：通信接口电路将主处理器耦合到一对串行通信链路。共享存储器用于在主机和接口电路之间传递消息数据和网络管理数据，并且每个都可以通过中断控制线中断另一个。共享存储器存储包括中断标志和确认标志的握手段，其使得能够有效地维护大量不同的中断事件。

7. 发明授权

US5452420A Intelligent network interface circuit for establishing communication link between protocol machine and host processor employing counter proposal set parameter negotiation scheme 失效
标题翻译：智能网络接口电路，用于建立协议机与主处理器之间的通信链路，采用计数器提议设置参数协商方案
公开(公告)号：US5452420A
公开(公告)日：1995-09-19
申请号：US879732
申请日：1992-05-06
申请人： Jonathan R. Engdahl , Shawn L. Adams
发明人： Jonathan R. Engdahl , Shawn L. Adams
IPC分类号： H04L29/04 , G06F13/12 , G06F13/38 , H04L29/10 , G06F13/14 , G06F13/24
CPC分类号： G06F13/385 , G06F13/128
摘要： A communications interface circuit couples a host processor to a pair of serial communications links, During power-up the interface circuit negotiates a set of operating parameters with the host processor through a shared memory to establish the optimal conditions under which message data is to be exchanged between the serial communications links and the host processor.
摘要翻译：通信接口电路将主处理器耦合到一对串行通信链路。在上电期间，接口电路通过共享存储器与主处理器协商一组操作参数，以建立消息数据要被交换的最佳条件在串行通信链路和主机处理器之间。

8. 发明授权

US06788049B2 Detector for magnetizable material using amplitude and phase discrimination 有权
标题翻译：使用振幅和相位鉴别的可磁化材料检测器
公开(公告)号：US06788049B2
公开(公告)日：2004-09-07
申请号：US10328293
申请日：2002-12-23
申请人： Jonathan R. Engdahl , Ira B. Goldberg
发明人： Jonathan R. Engdahl , Ira B. Goldberg
IPC分类号： G01N2772
CPC分类号： G08B13/2408 , G08B13/2442 , G08B13/2471
摘要： A detector for magnetizable materials operates remotely to determine a amplitude and phase modification of an exciting magnetic field caused by the magnetizable materials. These amplitude and phase measurements are used to create a phase-amplitude trajectory in phase amplitude space, which may be finely divided to distinguish among a number of different types of components.
摘要翻译：用于可磁化材料的检测器远程操作以确定由可磁化材料引起的激励磁场的振幅和相位变化。这些幅度和相位测量用于在相位幅度空间中产生相位幅度轨迹，该相位幅度轨迹可以被细分，以区分多种不同类型的分量。

9. 发明授权

US06278368B1 Low cost material for multi-bit remote sensing 有权
标题翻译：低成本材料用于多位遥感
公开(公告)号：US06278368B1
公开(公告)日：2001-08-21
申请号：US09409331
申请日：1999-09-30
申请人： Ira B. Goldberg , Ted M. McKinney , Charles S. Hollingsworth , Jonathan R. Engdahl , Elik I. Fooks
发明人： Ira B. Goldberg , Ted M. McKinney , Charles S. Hollingsworth , Jonathan R. Engdahl , Elik I. Fooks
IPC分类号： G08B1314
CPC分类号： G08B13/2411 , G08B13/2442 , G08B13/2445 , G08B13/2471 , G08B13/2485
摘要： Multiple bits of information may be conveyed by passive target material incorporating filaments of magnetizable material having different magnetization functions and, in particular, different coercivities. Detection of the presence or absence of the individual filaments may be done remotely by measuring induced flux B as a function of an externally imposed magnetic field waveform and subjecting the measured induced flux signal to differentiation or Fourier transform techniques.
摘要翻译：可以通过包含具有不同磁化功能，特别是不同矫顽力的可磁化材料的长丝的被动目标材料传送多个位信息。可以通过测量作为外部施加的磁场波形的函数的感应通量B来远程检测单个细丝的存在或不存在，并将测量的感应通量信号进行微分或傅里叶变换技术。

10. 发明授权

US4667323A Industrialized token passing network 失效
标题翻译：工业化令牌传递网络
公开(公告)号：US4667323A
公开(公告)日：1987-05-19
申请号：US771834
申请日：1985-09-03
申请人： Jonathan R. Engdahl , Jeffery A. Hanneman , David C. Sweeton
发明人： Jonathan R. Engdahl , Jeffery A. Hanneman , David C. Sweeton
IPC分类号： H04L12/417 , H04J3/02
CPC分类号： H04L12/417
摘要： A communications network is comprised of two or more stations which share mastership of the network by passing a token between them. While a station holds the token it may send low or high priority messages. It may also inform other stations of its intent to exit the network and it may solicit for new stations wanting to enter the network. The token is passed from station-to-station in accordance with a predetermined time schedule which insures each station fair access to the network while insuring that messages are conveyed between stations within a predetermined worst case time delay.

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