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    • 3. 发明授权
    • Control system for switching duplicated switch units in ATM exchange
    • 用于在ATM交换机中切换复制交换机单元的控制系统
    • US5301184A
    • 1994-04-05
    • US972025
    • 1992-11-06
    • Shiro UriuSatoshi KakumaYoshihiro Uchida
    • Shiro UriuSatoshi KakumaYoshihiro Uchida
    • H04L12/707H04L12/713H04L12/723H04L12/943H04Q11/04H04L12/56
    • H04L49/153H04L49/3009H04L49/3081H04L49/552H04Q11/0478H04L2012/5627H04L49/1523H04L49/30
    • In a control system for switching between a first system and a second system of a duplicated selecting structure in an ATM exchange, one of the first and second systems operates as an active system, and the other operates as a standby system. A generator unit writes specific bits into ATM cells received via an input transmission line. The specific bits respectively written into ATM cells to be transferred via the active system indicate a first state, and those respectively written into the ATM cells to be transferred via the standby system indicate a second state. A first table stores the specific bits respectively assigned to VPI/VCI pairs related to the ATM cells transferred via the first system. A second table stores the specific bits respectively assigned to VPI/VCI pairs related to the ATM cells transferred via the second system. A selecting unit compares the specific bits written into the ATM cells with the specific bits stored in the first and second tables by using the VPI/VCI pairs of the ATM cells, and outputs only ATM cells respectively having specific bits respectively indicating the first state to an output transmission line.
    • 在用于在ATM交换机中在第一系统和第二系统之间切换复制选择结构的控制系统中,第一和第二系统之一作为活动系统运行,另一个作为备用系统运行。 发生器单元将特定位写入经由输入传输线接收的ATM信元。 分别写入要通过有源系统传送的ATM信元的特定位指示第一状态,分别写入要经由备用系统传送的ATM信元的那些指示第二状态。 第一表存储分配给与通过第一系统传送的ATM信元相关的VPI / VCI对的特定位。 第二表存储分配给与通过第二系统传送的ATM信元相关的VPI / VCI对的特定位。 选择单元通过使用ATM信元的VPI / VCI对将写入ATM信元的特定比特与存储在第一和第二表中的特定比特进行比较,并且仅将分别具有表示第一状态的特定比特的ATM信元仅输出到 输出传输线。
    • 4. 发明授权
    • Information processing system for obtaining status data of a simplex
system by a standby system of a duplex system
    • 用于通过双工系统的备用系统获得单工系统的状态数据的信息处理系统
    • US5448720A
    • 1995-09-05
    • US940248
    • 1992-09-04
    • Shiro UriuShuji YoshimuraYoshihiro Uchida
    • Shiro UriuShuji YoshimuraYoshihiro Uchida
    • G06F11/16G06F11/20H04B1/74H04J3/14H04M3/22H04Q3/545H04J1/16
    • G06F11/2038G06F11/16G06F11/2028H04B1/74H04J3/14H04Q3/54558
    • An information processing system includes a simplex system and a duplex system in which at least two data transmitting systems are provided each capable of being an act system or a standby system. Each data transmitting system has a data acquiring unit. The simplex system includes a controller for controlling a selector to switch between the systems. When in a standby condition, the data acquiring unit of the respective data transmitting system in the duplex system issues an access request signal to a switching signal generating unit provided in the controller of the simplex system to request that the output of the selector be switched from the act system to the standby system in the duplex system. Upon receipt of the access request signal from the data acquiring unit in the standby system, the switching signal generating unit switches the selector to the standby system. As a result, status data acquired by the data acquiring unit in the simplex section is output to the data acquiring section in the standby system. The duplex system uses the status data to make a diagnosis of the standby system for its normality.
    • 信息处理系统包括单工系统和双工系统,其中提供至少两个能够作为动作系统或备用系统的数据传输系统。 每个数据发送系统具有数据获取单元。 单工系统包括用于控制选择器在系统之间切换的控制器。 当处于待机状态时,双工系统中的相应数据发送系统的数据获取单元向单工系统的控制器中提供的切换信号产生单元发出访问请求信号,以请求将选择器的输出从 该系统到双工系统中的备用系统。 在备用系统中从数据获取单元接收到访问请求信号时,切换信号生成单元将选择器切换到备用系统。 结果,将数据获取单元在单工部分中获取的状态数据输出到待机系统中的数据获取部分。 双工系统使用状态数据来对备用系统进行正常诊断。
    • 5. 发明授权
    • Path test system for ATM switch
    • ATM交换机路径测试系统
    • US5875177A
    • 1999-02-23
    • US957387
    • 1997-10-23
    • Shiro UriuYoshihiro UchidaShuji Yoshimura
    • Shiro UriuYoshihiro UchidaShuji Yoshimura
    • H04J3/14H04L12/26H04L12/28H04L12/70H04Q11/04
    • H04J3/14H04Q11/0478H04L2012/5628
    • A sending trunk on the input side of an ATM switch is equipped with a test cell generating section, and a receiving trunk on the output side of the ATM switch is equipped with a test cell detecting section. The test cell generating section includes a unit for setting a test cell identifier in the header of a test cell and a unit for generating pieces of data with regularity in the information field of the test cell. The test cell detecting section includes a unit for detecting the test cell identifier from the header of a cell received and a unit for detecting regularity from data in the information field of the cell received. When a test cell is transmitted, the test cell detecting section evaluates the result of a test on the basis of the result of detection of the test cell identifier from the header of the test cell and the result of detection of the regularity from data in the information field of the test cell.
    • 在ATM交换机的输入侧的发送中继装置具有测试小区生成部分,ATM交换机的输出侧的接收中继装备有测试小区检测部分。 测试小区生成部分包括用于在测试小区的头部中设置测试小区标识符的单元和用于在测试小区的信息字段中规则地生成数据片段的单元。 测试小区检测部分包括从接收的小区的头部检测测试小区标识符的单元和用于从所接收的小区的信息字段中的数据检测规则性的单元。 当测试单元被发送时,测试单元检测部分根据测试单元标识符的检测结果和来自测试单元的标题的规则性的检测结果来评估测试结果 测试单元的信息字段。
    • 6. 发明授权
    • Apparatus for testing ATM channels
    • ATM通道测试装置
    • US5313453A
    • 1994-05-17
    • US854888
    • 1992-03-20
    • Yoshihiro UchidaSatoshi KakumaNaoyuki IzawaYasuhiro AsoShuji YoshimuraMasami Murayama
    • Yoshihiro UchidaSatoshi KakumaNaoyuki IzawaYasuhiro AsoShuji YoshimuraMasami Murayama
    • H04L1/00H04L12/26H04L12/56H04Q11/04H04J3/14
    • H04L12/5601H04L1/0083H04L12/2697H04L43/50H04L49/1553H04L49/255H04L49/309H04Q11/0478H04J2203/0019H04L2012/5628H04L2012/5672H04L2012/5681
    • A first form of an ATM channel testing apparatus tests an ATM channel by having a test cell detector in each switch to detect whether or not the switch appropriately switches a test cell generated by a test cell generating trunk. A second form of an ATM channel testing apparatus easily tests an ATM channel by having test cell generators provided for the respective input highways sequentially generating test cells including test cell identifying information and input highway identifying information, and having test cell checkers provided respectively for the output highways simply tally the test cells by the respective input highways. A third form of an ATM channel testing apparatus tests an ATM channel with less pieces of hardware by having turnaround parts in respective ordinary trunks sequentially turn around a test cell generated by a test cell generating trunk to be finally returned to the test cell generating trunk. A fourth form of an ATM channel testing apparatus tests an ATM channel by having a test cell checker provided for each of output highways to examine whether or not the test data carried in respective octets of the payloads in extracted test cells are of consecutive values.
    • ATM信道测试装置的第一形式通过在每个交换机中具有测试小区检测器来检测ATM信道,以检测交换机是否适当地切换由测试小区产生的中继线产生的测试小区。 ATM信道测试装置的第二种形式通过为相应的输入高速公路提供测试单元发生器来容易地测试ATM信道,该测试单元发生器依次产生包括测试单元识别信息和输入公路识别信息的测试单元,并且具有分别为输出提供的测试单元检查器 高速公路通过相应的输入高速公路简单地测试单元格。 ATM信道测试装置的第三种形式通过在相应的普通中继线中具有周转部分来顺序地转换由测试小区生成中继线产生的测试小区,以最终返回到测试小区生成中继线,来测试具有较少硬件的ATM信道。 ATM信道测试装置的第四种形式通过为每个输出高速公路提供测试单元检查来检测ATM信道,以检查提取的测试小区中有效载荷的相应八位字节中承载的测试数据是否是连续值。
    • 8. 发明授权
    • Elastic store memory circuit
    • 弹性存储器电路
    • US5444658A
    • 1995-08-22
    • US206221
    • 1994-03-07
    • Naoyuki IzawaYasuhiro AsoYoshihiro UchidaSatoshi Kakuma
    • Naoyuki IzawaYasuhiro AsoYoshihiro UchidaSatoshi Kakuma
    • H04J3/06H04L7/00G11C7/00
    • H04J3/0626
    • An elastic store memory circuit includes first and second elastic store memories. Each of the first and second elastic store memories generates a phase comparison signal when a phase difference between a write timing and a read timing is within a predetermined phase range. The elastic store memory circuit also includes a selector which selects either the input data read out from the first elastic store memory or the input data read out from the second elastic store memory, and a slip signal generator for generating a slip signal on the basis of a write reset timing at which the first and second elastic store memories are reset, a read reset timing at which the first and second elastic store memories are reset, and the phase comparison signal. The slip signal indicates which one of the write reset timing and the read reset timing precedes the other one.
    • 弹性存储存储器电路包括第一和第二弹性存储器存储器。 当写入定时和读取定时之间的相位差在预定相位范围内时,第一和第二弹性存储存储器中的每一个产生相位比较信号。 弹性存储器电路还包括选择器,其选择从第一弹性存储存储器读出的输入数据或从第二弹性存储器读出的输入数据,以及滑移信号发生器,用于基于 复位第一和第二弹性存储器的写入复位定时,复位第一和第二弹性存储器的读取复位定时以及相位比较信号。 打印信号指示写入复位定时和读取复位定时中哪一个先于另一个。
    • 9. 发明授权
    • Switching system for ATM dual switch system
    • ATM双交换系统的交换系统
    • US5274633A
    • 1993-12-28
    • US730808
    • 1991-07-29
    • Yumiko KatoSatoshi KakumaYasuhiro AsoYoshihiro UchidaHiroshi Miyake
    • Yumiko KatoSatoshi KakumaYasuhiro AsoYoshihiro UchidaHiroshi Miyake
    • H04L12/933H04L12/935H04L12/939H04J3/02
    • H04L49/552H04L49/15H04L49/30
    • The present invention relates to a system switching system in an exchange system in which an ATM switch for exchanging asynchronous transfer mode (ATM) cells is duplexed. In order to switch between ATM switches accurately with drop-out and overlap of cells eliminated, at the input side of the ATM switches, a bit indicating active is inserted into the header of a cell from a transmission line for application to the switch in the active system and a bit indicating standby is inserted into the header of a cell for application to the switch in the standby system and, at the output side of the ATM switches, bits in the headers of cells output from respective switches are referred to and only active indicating cells are selected to be output to a transmission line. Buffers for storing active indicating cells are provided at the outputs of the ATM switches, respectively. At the time of switching between systems, cell input to the old active system is stopped, active indicating cells are stored in the buffer in the active system, and active indicating cells stored in the buffer in the new active system are output after all the active indicating cells in the old active system have been output.
    • PCT No.PCT / JP90 / 01556 Sec。 371日期1991年7月29日 102(e)日期1991年7月29日PCT 1990年11月29日PCT PCT。 出版物WO91 / 08632 日期:1991年6月13日。本发明涉及交换系统中的系统交换系统,其中用于交换异步传输模式(ATM)小区的ATM交换机是双工的。 为了在ATM交换机之间切换准确地脱离和消除的小区的重叠,在ATM交换机的输入侧,将一个指示有效的比特从插入的传输线插入到一个小区的报头中, 活动系统和指示待机的位被插入到小区的头部中以应用于备用系统中的交换机,并且在ATM交换机的输出侧,从相应交换机输出的小区的报头中的比特被引用 活动指示单元被选择输出到传输线。 用于存储活动指示单元的缓冲器分别设置在ATM交换机的输出端。 在系统之间切换时,停止对原有活动系统的单元输入,活动指示单元存储在活动系统中的缓冲器中,并且在所有活动系统中输出存储在新的活动系统中的缓冲器中的活动指示单元 指示旧的活动系统中的单元格已经输出。