Loop transmission system
    2.
    发明授权
    Loop transmission system 失效
    环路传输系统

    公开(公告)号:US4435704A

    公开(公告)日:1984-03-06

    申请号:US354918

    申请日:1982-03-08

    CPC分类号: H04L1/22 H04L12/437

    摘要: A loop transmission system including a plurality of stations connected in series in a looped transmission line to transfer data among the stations, wherein the stations include a supervising station and at least one terminal station and the transmission line is duplicated so that when a fault occurs in currently used one of the transmission lines, the other transmission line which has been used as a spare is used for transmission of data, while the supervising station sends out a specific signal to the spare transmission line and the terminal stations each determines one of the transmission lines through which the specific signal is detected, as the spare.

    摘要翻译: 一种环路传输系统,包括在循环传输线中串联连接以在站间传输数据的多个站,其中站包括监控站和至少一个终端站,并且传输线被复制,使得当发生故障时 目前使用的传输线之一,已经用作备用的另一传输线用于数据传输,而监控站向备用传输线发送特定信号,并且终端站各自确定传输 检测到特定信号的线路作为备用线路。

    Method and apparatus for switching loop type transmission lines
    3.
    发明授权
    Method and apparatus for switching loop type transmission lines 失效
    用于切换环型传输线的方法和装置

    公开(公告)号:US4506357A

    公开(公告)日:1985-03-19

    申请号:US359709

    申请日:1982-03-19

    IPC分类号: H04L1/22 H04L12/42 H04J3/14

    CPC分类号: H04L12/42

    摘要: A method of switching transmission lines for a transmission control system in which a plurality of stations are linked with loop type transmission lines having a stand-by transmission line characterized in that each of the stations is operable to switch the active transmission line to the stand-by transmission line in response to the detection of abnormality in the carrier wave and a station transmitting the carrier wave is operable to halt the transmission of the carrier wave on the active transmission line so that the overall transmission line is switched to the stand-by transmission line, thereby minimizing the system down time.

    摘要翻译: 一种切换用于传输控制系统的传输线的方法,其中多个站与具有待机传输线的环路传输线路链接,其特征在于,每个站可操作以将主动传输线路切换到待机传输线路, 通过传输线响应于载波中的异常的检测,并且发送载波的站可操作地停止在主动传输线上的载波的传输,使得整个传输线被切换到备用传输 线,从而最小化系统停机时间。

    Ring communication network system and a method for controlling same
    5.
    发明授权
    Ring communication network system and a method for controlling same 失效
    环通信网络系统及其控制方法

    公开(公告)号:US4763315A

    公开(公告)日:1988-08-09

    申请号:US826255

    申请日:1986-02-05

    IPC分类号: H04L12/437 H04J3/14

    CPC分类号: H04L12/437

    摘要: In a communication network having a plurality of stations interconnected through a double ring transmission line, a station which detects a failure in the ring transmission line sends out a failure notice data, and a station which has received the failure notice data stops the send-out of its own data and relays the received data. A station which cannot receive the failure notice data loops back and transmission line to form a closed ring transmission line which bypasses a failure location.

    摘要翻译: 在具有通过双环传输线互连的多个站的通信网络中,检测环形传输线路中的故障的站发送故障通知数据,并且已经接收到故障通知数据的站停止发送 的数据并中继接收到的数据。 无法接收故障通知数据的站回送并传输线路,形成绕过故障位置的闭环传输线路。

    Ring configuration of line concentrators
    6.
    发明授权
    Ring configuration of line concentrators 失效
    线路集线器的环形配置

    公开(公告)号:US4847611A

    公开(公告)日:1989-07-11

    申请号:US86821

    申请日:1987-08-19

    IPC分类号: H04L12/42

    CPC分类号: H04L12/42

    摘要: In a ring communications system including a plurality of line concentrators that are connected in the form of a ring, the line concentrators are connected together via a main ring, and the terminal stations connected to the line concentrators are connected to the main ring via ring subsidiaries. The main ring and the ring subsidiaries are connected together via ring connection switches that so work as to connect or disconnect the main ring and the ring subsidiaries. The ring connection switch is so constructed as to maintain the connected condition even when the power source of the line concentrator is in the turned-off state.

    摘要翻译: 在包括以环形连接的多个集线器的环形通信系统中,线路集线器通过主环连接在一起,连接到集线器的终端站通过环形子系统连接到主环 。 主环和环形子公司通过环形连接开关连接在一起,用于连接或断开主环和环形子公司。 环形连接开关被构造成即使当线路集电器的电源处于关断状态时也保持连接状态。

    Data communication network system and reconfiguration control method
    7.
    发明授权
    Data communication network system and reconfiguration control method 失效
    数据通信网络系统和重配置控制方法

    公开(公告)号:US4815069A

    公开(公告)日:1989-03-21

    申请号:US171698

    申请日:1988-03-22

    IPC分类号: H04L12/437 H04J3/14

    CPC分类号: H04L12/437

    摘要: In a communication system having first and second ring transmission lines for connecting a plurality of stations and for providing opposite signal transmission direction, a first station, which is located just downstream side of an failure point occurred in the first transmission line, sends out a beacon signal along said first transmission line while causing an intentional failure in the second transmission line on its downstream side and a second station, which is located just upstream side of the failure point on the first transmission line, forms a first loop-back path (WRAPA) by detecting the intentional failure on the second transmission line if the second station has received the beacon signal. The first station forms a second loop-back path (WRAPB) by receiving the beacon from the second transmission line which is sent back by the second station.

    摘要翻译: 在具有用于连接多个站并且用于提供相反的信号传输方向的第一和第二环形传输线的通信系统中,位于第一传输线路中发生的故障点正好的下游侧的第一站发送信标 信号沿着所述第一传输线路,同时在其下游侧的第二传输线路中引起故意故障,并且位于第一传输线路上故障点正上游侧的第二站点形成第一环回路径(WRAPA ),如果第二站已经接收到信标信号,则通过检测第二传输线上的故意故障。 第一站通过从第二站发回的第二传输线接收信标形成第二环回路径(WRAPB)。

    Local area network communication system
    8.
    发明授权
    Local area network communication system 失效
    局域网通信系统

    公开(公告)号:US4672607A

    公开(公告)日:1987-06-09

    申请号:US755015

    申请日:1985-07-15

    IPC分类号: H04L12/46 H04J3/00

    CPC分类号: H04L12/4637

    摘要: A local area network communication system in which a repeating installation sets a ring number of a ring from which a communication frame was taken out as a source address of the frame. The repeating installation also sets a ring number of a ring to which a communication frame is to be sent. When a station receives the frame, the station checks the source address of the frame to identify the ring number of the ring to which the source station belongs and checks the destination address to identify the ring number of the ring to which the station itself belongs.

    摘要翻译: 一种局域网通信系统,其中重复设置将从其取出通信帧的环的环号设置为帧的源地址。 重复安装还设置要发送通信帧的环的环号。 当站接收到帧时,站检查帧的源地址以识别源站所属的环的环号,并检查目的地址以识别站本身所属的环的环号。

    Method and system for quickly transferring data in a network having
computers connected therewith
    9.
    发明授权
    Method and system for quickly transferring data in a network having computers connected therewith 失效
    在具有与其连接的计算机的网络中快速传送数据的方法和系统

    公开(公告)号:US5912903A

    公开(公告)日:1999-06-15

    申请号:US728550

    申请日:1996-10-09

    摘要: A communication method applied to a communication system is provided for enhancing communication performance such as a throughput and a turn around time in the so-called intra-computer communication. In the communication procedure, when a source end system (SES) like a host computer transfers data to a destination end system (DES) such as a LAN or a WAN through a communication control system (CCS), the CCS served as a virtual destination receives the data and transmits an acknowledge (+Cresp) to the SES. In response to the acknowledge (+Crest), the SES performs the next transfer of the data. In response to the last acknowledge, the SES operates to output an indication about completion of the data transmission (End TX-C). The CCS continues to transfer the data temporarily received from the SES to the DES unless the CCS receives the acknowledge from the DES. The acknowledge +Cresp contains information about an amount of data transferred from the CCS to the DES. The SES operates to calculate an amount of data to be transferred on the basis of the amount of transferred data contained in the information, a window size and the amount of data so far transferred to the CCS.

    摘要翻译: 提供了一种应用于通信系统的通信方法,用于在所谓的计算机内通信中增强通信性能,例如吞吐量和转向时间。 在通信过程中,当诸如主机的源端系统(SES)通过通信控制系统(CCS)将数据传送到诸如LAN或WAN的目的地终端系统(DES)时,CCS用作虚拟目的地 接收数据并向SES发送确认(+ Cresp)。 响应确认(+ Crest),SES执行下一次数据传输。 响应于最后一个确认,SES用于输出关于数据传输完成的指示(结束TX-C)。 CCS继续将从SES临时接收的数据传送到DES,除非CCS收到DES的确认。 确认+ Cresp包含有关从CCS传输到DES的数据量的信息。 SES根据信息中包含的传输数据的数量,窗口大小和迄今为止传输给CCS的数据量,计算要传输的数据量。

    Method and apparatus for testing station address in network
    10.
    发明授权
    Method and apparatus for testing station address in network 失效
    网络中站台地址的测试方法和装置

    公开(公告)号:US4984233A

    公开(公告)日:1991-01-08

    申请号:US479359

    申请日:1990-02-13

    IPC分类号: H04L12/26 H04L12/42

    摘要: A method for performing a duplicated address test used for a network including a first ring transmission line, a second ring transmission line having a signal transmission direction opposite to that of the first ring transmission line, and a plurality of stations connected to at least one of these ring transmission lines. Each of these stations has a flag DAC representing whether or not the duplicated address test is performed, and some of the plural stations constitute a plurality of control nodes having a configuration function of the network. The flag DAC of each of the stations is reset at a time instant when a power source of this station is turned on, and also when any of the control nodes receives the sent out configuration control frame. Each of the stations having the reset flags DAC sents out the duplicated address test frame to either the first or second transmission line to which the station is connected when a token frame to control a transmission right is captured. When another station having the same address as that of a source station receives the test frame, a discriminator indicative of an address duplication is added to this test frame.