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    • 1. 发明公开
    • 패킷 제어 시스템 및 통신 방법
    • 分组通信控制器
    • KR1020030019093A
    • 2003-03-06
    • KR1020020049811
    • 2002-08-22
    • 가부시키가이샤후지쿠라
    • 오니시히로야
    • H04L12/851
    • H04L47/10H04L47/245
    • PURPOSE: To provide a packet communication device which immediately transmits urgent information even in the middle of communication without reducing the data transfer efficiency. CONSTITUTION: The packet communication device is provided with packet making parts 8 and 9 which convert signals transmitted from signal processing parts 2 and 7 to packets of a prescribed form, a high priority packet thrusting means 10 which thrusts a packet from the packet making part (high priority) 9 at the time of input of this packet even in the middle of transmission of a packet from the packet making part (low priority) 8, a transmission circuit 3 which transmits the packet outputted from the high priority packet thrusting means 10 to a communication medium 4 for transmission, a reception circuit 6 which receives a data string from a communication medium 5 for reception, and a multiplexer 13 which is connected to the reception circuit 6 and classifies the reception data string into low priority packets and high priority packets to transmit them to signal processing parts 8 and 9.
    • 目的:提供即使在通信中间也可以立即发送紧急信息的分组通信设备,而不降低数据传输效率。 构成:分组通信装置设置有将信号处理部分2和7发送的信号转换成规定形式的分组的分组产生部分8和9,高优先级分组推送装置10从分组产生部分推送分组( 高优先级)9,即使在从分组产生部分(低优先级)8发送分组的中间,输入该分组8时,发送电路3将从高优先级分组推送装置10输出的分组发送到 用于传输的通信介质4,从用于接收的通信介质5接收数据串的接收电路6和连接到接收电路6的多路复用器13,并将接收数据串分为低优先级分组和高优先级分组 以将它们发送到信号处理部分8和9。
    • 7. 发明公开
    • MAC 브리지의 주소 관리 방법 및 MAC 브리지
    • MAC桥及其地址管理方法
    • KR1020030013277A
    • 2003-02-14
    • KR1020020045290
    • 2002-07-31
    • 가부시키가이샤후지쿠라
    • 오니시히로야
    • H04L12/28
    • H04L12/462
    • PURPOSE: A MAC(Media Access Control) bridge and an address management method therefor are provided to offer a fair relay service to users by managing the number of the terminals that can be connected to ports within the upper limit number of the terminals. CONSTITUTION: A MAC bridge(1) has a port management table(2) which stores connectable terminal information indicating an upper limit value of the number of terminals(A1,A2,B1,C1) connectable to each port(A,B,C). When an address retrieving device(7) of an address learning section(3) receives packet information(Hi) at the ports(A,B,C) from the terminals(A1,A2,B1,C1) of a network, the address retrieving device(7) retrieves the port management table(2). When the upper limit number is satisfied, a register number addition/subtraction(8) adds/subtracts the number(na) of registrations, and writes a transmission origin address of packet information received by an address table updating device(9) in an address table(5).
    • 目的:提供MAC(媒体访问控制)网桥及其地址管理方法,通过管理可连接到终端上限端口内的端口数量为用户提供公平的中继服务。 构成:MAC桥(1)具有端口管理表(2),其存储表示可连接到每个端口(A,B,C)的端子数(A1,A2,B1,C1)的上限值的可连接终端信息 )。 当地址学习部分(3)的地址检索装置(7)从网络的终端(A1,A2,B1,C1)在端口(A,B,C)接收到分组信息(Hi)时,地址 检索装置(7)检索端口管理表(2)。 当满足上限号码时,寄存器编号相加/减法(8)将注册数(na)相加/减去,并将由地址表更新装置(9)接收的分组信息的发送原始地址写入地址 表(5)。
    • 8. 发明公开
    • 통신 시스템 및 그 통신 방법
    • 通讯系统
    • KR1020030013276A
    • 2003-02-14
    • KR1020020045289
    • 2002-07-31
    • 가부시키가이샤후지쿠라
    • 오니시히로야
    • H04L12/52
    • H04L12/40032H04L12/2852H04L12/403H04L43/00H04L43/0858
    • PURPOSE: To provide a time division multiplex access communication system where configurations of master and slave stations can be simplified, delay time can be adjusted and utilizing efficiency of a communication medium is not deteriorated. CONSTITUTION: In the communication system where the master station (device A) and many slave stations (devices B-1, B-2) make 1: multiple communication by using a downlink communication medium 7 and an uplink communication medium 4, the master station (device A) is provided with a data transmission processing section 1, a data reception processing section 2, a reception circuit 3, the uplink communication medium 4, a multiplexer 5, a transmission circuit 6, the downlink communication medium 7, a delay time measurement section 8, a transmission permission signal transmission timing calculation section 9, a transmission permission signal generating section 10, and a system control section 11, makes communication with the slave stations (devices B-1, B-2) by using the downlink communication medium 7, the slave stations (devices B-1, B-2) measure delay times d1, d2 up to the master station (device A), the master station (device A) obtains a transmission interval of a signal to give the transmission permission to each slave station and transmits a signal to provide transmission permission to the slave stations (devices B-1, B-2) according to the transmission interval.
    • 目的:提供一种可以简化主站和从站配置的时分复用接入通信系统,可以调整延迟时间,不会降低通信介质的利用效率。 构成:在主站(设备A)和多个从站(设备B-1,B-2)进行1:通过下行链路通信介质7和上行链路通信介质4进行多次通信的通信系统中,主站 (装置A)具有数据发送处理部1,数据接收处理部2,接收电路3,上行链路通信介质4,多路复用器5,发送电路6,下行链路通信介质7,延迟时间 测量部8,发送许可信号发送定时计算部9,发送许可信号生成部10和系统控制部11,通过使用下行链路通信与从站(设备B-1,B-2)进行通信 介质7,从站(设备B-1,B-2)测量到主站(设备A)的延迟时间d1,d2,主站(设备A)获得信号的传输间隔,以给出tra 根据传输间隔向每个从站发出许可,并发送信号以向从站(设备B-1,B-2)提供传输许可。