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    Hybrid units for a communication network
    1.
    发明授权
    Hybrid units for a communication network 失效
    用于通信网络的混合单元

    公开(公告)号：US5491692A

    公开(公告)日：1996-02-13

    申请号：US173719

    申请日：1993-12-23

    Applicant: Christopher W. Gunner ,  John A. Harper ,  Ian M. C. Shand

    Inventor： Christopher W. Gunner ,  John A. Harper ,  Ian M. C. Shand

    IPC: H04L12/56 ,  H04L12/46

    CPC classification number: H04L45/04

    Abstract: A communication network consists of end units (EUs) and distribution units (DUs) coupled together by links which may include local area networks (LANs). The units maintain neighbor tables by sending out Hello messages which indicate the unit type and contain the network service access point (NSAP) IDs or addresses of the units. Data messages (packets) mainly originate and end at EUs. An EU maintains only partial routing information about neighbors, while the DUs collectively maintain complete information about all NSAPs. So if an EU wants to send a packet to an EU which is not a neighbour (and sometimes even if it is), it need merely send it to a neighboring DU; that DU, along with the other DUs, must find a route to the destination EU. This invention provides a hybrid unit (HU), which acts as a DU to EUs but as an EU to DUs. The HU provides DU-like message forwarding but only on a local basis within a subnetwork of EUs and HUs.

    Abstract translation: 通信网络由可能包括局域网（LAN）的链路耦合在一起的终端单元（EU）和分发单元（DU）组成。 这些单元通过发送指示单元类型的Hello消息来维护邻居表，并且包含单元的网络服务接入点（NSAP）ID或地址。 数据信息（数据包）主要来源于欧盟。 欧盟仅维护有关邻居的部分路由信息，而DU共同维护有关所有NSAP的完整信息。 因此，如果欧盟想向不是邻居的欧盟（有时甚至是）发送一个分组，那么它只需要发送给邻近的DU; 那DU以及其他DU都必须找到到目的地EU的路线。 本发明提供了一种混合单元（HU），其作为EU的DU，但作为EU的DU。 HU提供类似DU的消息转发，但仅在本地基于EU和HU的子网中。

    Message network monitoring
    2.
    发明授权
    Message network monitoring 失效
    消息网络监控

    公开(公告)号：US5432776A

    公开(公告)日：1995-07-11

    申请号：US129513

    申请日：1993-09-30

    Applicant: John A. Harper

    Inventor： John A. Harper

    IPC: H04L12/14 ,  H04L12/26 ,  H04M15/08 ,  H04M15/04 ,  H04M15/10

    CPC classification number: H04L43/00 ,  H04L12/14 ,  H04L12/2602 ,  G06F2221/2101 ,  H04L43/0876

    Abstract: A digital message routing network has at least some nodes at which messages are monitored for accounting purposes. Such a node contains means for generating and compressing accounting digests, each of which consists of a key K representing the nature and route of the message and a value V associated with the message. For each message, a digest is produced in register 30, and copied into a location in a first memory 22D at a location determined by hashing its key; further digests with the same key are compressed into the digest already in that location. A second memory 23D is operated as a cyclic buffer with head and tail counters HDCT 40 and TLCT 41. The address of the head of the buffer, ie the valid area of memory 23D, is included as an index I in each digest in the first memory 22D as that digest is created. Each time a digest is created or changed in the first memory 22D, it is copied into the second memory at the location in the second memory determined by its index. Digests are read out from the second memory in blocks; the corresponding digests in the first memory thereby become invalid, and have to be restarted by initializing their values and giving them new indexes.

    Abstract translation: 数字消息路由网络具有至少一些节点，消息被监视以用于会计目的。 这样的节点包含用于生成和压缩会计摘要的装置，每一个都包括表示消息的性质和路由的密钥K和与该消息相关联的值V. 对于每个消息，在寄存器30中产生摘要，并将其复制到通过散列其密钥确定的位置处于第一存储器22D中的位置; 具有相同密钥的进一步摘要将被压缩到已经在该位置的消息中。 第二存储器23D作为具有头和尾计数器HDCT 40和TLCT 41的循环缓冲器操作。缓冲器的头部地址（即，存储器23D的有效区域）的地址被包括在第一个的每个摘要中作为索引I 内存22D，因为该消息被创建。 每当在第一存储器22D中创建或改变摘要时，在由其索引确定的第二存储器中的位置将其复制到第二存储器中。 消息从块中的第二个存储器中读出; 第一存储器中的相应摘要因此变得无效，并且必须通过初始化它们的值并给它们新的索引来重新启动。

    Securing means for machine parts
    3.
    发明授权
    Securing means for machine parts 失效
    机械部件的固定方式

    公开(公告)号：US4094611A

    公开(公告)日：1978-06-13

    申请号：US781353

    申请日：1977-03-25

    Applicant: John A. Harper ,  Terence V. Williams

    Inventor： John A. Harper ,  Terence V. Williams

    IPC: E21C35/18 ,  F16B21/00

    CPC classification number: E21C35/18 ,  Y10T403/1624 ,  Y10T403/581 ,  Y10T403/7084

    Abstract: Means are disclosed for securing together a first, U-shaped member and a second member received within the first member. In the preferred embodiment, the second member is a holder for a mineral cutter pick and the U-shaped member is formed on a drum or cutter chain of a mining machine. The means comprise registering bores in the legs of the U-shaped member and in the second member, one of the members being formed with a recess extending transversely from the bore therein. A hollow cross pin is received within the bores and a locking pin is driven through a transverse bore in the cross pin to extend into said recess. The cross pin has a length equal to or less than said bores in registration, and part of its internal surface is provided with a screw thread.

    Abstract translation: 公开了用于将第一U形构件和接收在第一构件内的第二构件固定在一起的装置。 在优选实施例中，第二构件是用于矿物切割器的保持器，并且U形构件形成在采矿机的滚筒或切割链上。 该装置包括将孔注入U形构件的腿部，并且在第二构件中，其中一个构件形成有从其中的孔横向延伸的凹部。 一个中空十字销被接收在孔内，并且锁定销被驱动穿过十字销中的横向孔以延伸到所述凹槽中。 十字销具有等于或小于所述孔对准的长度，并且其内表面的一部分设有螺纹。

    Message switching network monitoring
    6.
    发明授权
    Message switching network monitoring 失效
    消息交换网络监控

    公开(公告)号：US5305305A

    公开(公告)日：1994-04-19

    申请号：US732366

    申请日：1991-07-18

    Applicant: John A. Harper ,  Francis Dolan

    Inventor： John A. Harper ,  Francis Dolan

    IPC: H04L12/26 ,  H04Q3/00

    CPC classification number: H04Q3/0016

    Abstract: A message switching network is disclosed which consists of end units between which messages flow. The end units are coupled together directly (via LANs) or via common switching nodes through level 0 links; the nodes are coupled together via level 1 links; and the nodes are grouped into areas which are coupled together via level 2 links. A message entering a node has its destination area code compared with the node's area code, and an area/port table or an end unit/port table is used to look up the output port which is coupled to the end unit, next node in the area, or next area to which that message is to be delivered. Logic circuitry determines the incoming and outgoing levels, and a transition between levels is logged together with certain details of the message. Messages are thus monitored--i.e., their passage is recorded--when they cross levels in the hierarchy. Thus, provided the network is "well-behaved", messages are accurately counted and categorized according to the distances which they travel through the network.

    Abstract translation: 公开了一种消息交换网络，其由消息流在其之间的终端单元组成。 终端单元通过等级0链路直接（经由LAN）或通过公共交换节点耦合在一起; 节点通过1级链路耦合在一起; 并且节点被分组为通过级别2链路耦合在一起的区域。 进入节点的消息具有与节点的区域代码相比的目的地区域代码，并且使用区域/端口表或端单元/端口表来查找耦合到终端单元的输出端口， 区域或该邮件要传送到的下一个区域。 逻辑电路确定输入和输出电平，并且层级之间的转换与消息的某些细节一起记录。 因此，当层级结构中的层级交叉时，就会对这些信息进行监控，即记录其通过。 因此，只要网络“行为良好”，消息将被准确计数，并根据它们通过网络传播的距离进行分类。

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