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    Apparatus for testing ATM channels
    3.
    发明授权
    Apparatus for testing ATM channels 失效
    ATM通道测试装置

    公开(公告)号：US5313453A

    公开(公告)日：1994-05-17

    申请号：US854888

    申请日：1992-03-20

    申请人： Yoshihiro Uchida ,  Satoshi Kakuma ,  Naoyuki Izawa ,  Yasuhiro Aso ,  Shuji Yoshimura ,  Masami Murayama

    发明人： Yoshihiro Uchida ,  Satoshi Kakuma ,  Naoyuki Izawa ,  Yasuhiro Aso ,  Shuji Yoshimura ,  Masami Murayama

    IPC分类号： H04L1/00 ,  H04L12/26 ,  H04L12/56 ,  H04Q11/04 ,  H04J3/14

    CPC分类号： H04L12/5601 ,  H04L1/0083 ,  H04L12/2697 ,  H04L43/50 ,  H04L49/1553 ,  H04L49/255 ,  H04L49/309 ,  H04Q11/0478 ,  H04J2203/0019 ,  H04L2012/5628 ,  H04L2012/5672 ,  H04L2012/5681

    摘要： 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.

    摘要翻译： 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。

    Elastic store memory circuit
    4.
    发明授权
    Elastic store memory circuit 失效
    弹性存储器电路

    公开(公告)号：US5444658A

    公开(公告)日：1995-08-22

    申请号：US206221

    申请日：1994-03-07

    申请人： Naoyuki Izawa ,  Yasuhiro Aso ,  Yoshihiro Uchida ,  Satoshi Kakuma

    发明人： Naoyuki Izawa ,  Yasuhiro Aso ,  Yoshihiro Uchida ,  Satoshi Kakuma

    IPC分类号： H04J3/06 ,  H04L7/00 ,  G11C7/00

    CPC分类号： H04J3/0626

    摘要： 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.

    摘要翻译： 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。

    Apparatus and method for establishing identical data in dual ATM switches
    5.
    发明授权
    Apparatus and method for establishing identical data in dual ATM switches 失效
    用于在双ATM自动交换机中建立标识数据的装置和方法

    公开(公告)号：US5153578A

    公开(公告)日：1992-10-06

    申请号：US542043

    申请日：1990-06-22

    申请人： Naoyuki Izawa ,  Yoshihiro Uchida ,  Masami Murayama ,  Yasuhiro Aso

    发明人： Naoyuki Izawa ,  Yoshihiro Uchida ,  Masami Murayama ,  Yasuhiro Aso

    IPC分类号： H04Q11/04 ,  H04L12/70 ,  H04L12/931 ,  H04Q3/00

    CPC分类号： H04L49/552 ,  H04L49/103 ,  H04L49/1523 ,  H04L49/25

    摘要： An ATM switching system includes two ATM switches which are the same as each other. Each of the ATM switches includes a switch buffer, and a cell counter which indicates the number of cells in the switch buffer. Each of the ATM switches also includes a difference calculator, which calculates the difference between the number of cells in the two switch buffers when one of the ATM switches is changed from an out-of-service state to a slave mode. At this time, the other ATM switch operates in a master mode. Each of the ATM switches further includes a dummy cell generator, which generates a number of dummy cells which corresponds to the difference calculated by the difference calculator. The generated dummy cells are written into the switch buffer in the slave mode. When it is determined that when all of the dummy cells have been output from the switch buffer, the two ATM switches are syunchronized with each other.

    In-service activator for a broadband exchanger
    6.
    发明授权
    In-service activator for a broadband exchanger 失效
    宽带交换机的在线激活器

    公开(公告)号：US5295134A

    公开(公告)日：1994-03-15

    申请号：US853257

    申请日：1992-03-18

    申请人： Shuji Yoshimura ,  Satoshi Kakuma ,  Shiro Uriu ,  Naoyuki Izawa

    发明人： Shuji Yoshimura ,  Satoshi Kakuma ,  Shiro Uriu ,  Naoyuki Izawa

    IPC分类号： H04M3/22 ,  H04Q3/545 ,  H04Q11/04 ,  H04L12/26

    CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L49/255 ,  H04L49/3081 ,  H04L49/309 ,  H04Q11/0478 ,  H04L2012/5627 ,  H04L2012/5681

    摘要： An in-service activator for a broadband exchanger has a dual system structure, in which a first system and a second system form a dual pair. The first system and the second system in the dual pair each has at least one [1] channel converter and a switcher. A channel converter stores channel setting information for use in routing a cell inputted from a line, and outputs the cell inputted from the line by attaching the channel setting information to the cell. The switcher switches a cell outputted from a channel converter. The interfacer stores, in a channel converter of a to-be-activated standby system in the dual pair, the channel setting information read from the corresponding channel converter of an act system in the duplex pair.

    摘要翻译： 用于宽带交换机的在线激活器具有双系统结构，其中第一系统和第二系统形成双对。 双对中的第一系统和第二系统每个具有至少一个（1）信道转换器和切换器。 通道转换器存储用于路由从一行输入的单元的通道设置信息，并且通过将通道设置信息附加到该单元来输出从该行输入的单元。 切换器切换从信道转换器输出的单元。 该接口在双对中的待激活待机系统的信道转换器中存储从双工对中的动作系统的相应信道转换器读取的信道设置信息。

    Communication path quality monitoring method and quality monitoring apparatus
    7.
    发明授权
    Communication path quality monitoring method and quality monitoring apparatus 失效
    通信路径质量监测方法和质量监测仪器

    公开(公告)号：US06477141B1

    公开(公告)日：2002-11-05

    申请号：US09260313

    申请日：1999-03-02

    申请人： Naoyuki Izawa ,  Hiroya Kawasaki ,  Masaki Kira ,  Noriko Samejima

    发明人： Naoyuki Izawa ,  Hiroya Kawasaki ,  Masaki Kira ,  Noriko Samejima

    IPC分类号： H04L1226

    CPC分类号： H04L43/00 ,  H04L43/0829

    摘要： A start/stop setting section is provided on the upstream side of a dual-configuration ATM switch, and a start/stop detection section is provided on the downstream side for each of a working and a protection line. At the initiation of quality monitoring, the start/stop setting section sets a start bit in an incoming cell having a specified identifier, and thereupon starts counting the number of cells whose identifier matches the specified identifier. The start/stop detection section, upon detecting the cell having the start bit, starts counting the number of cells whose identifier matches the identifier of the detected cell. At the end of the quality monitoring, the start/stop setting section sets a stop bit in an incoming cell having the specified identifier, and thereupon stops the counting of cells.

    摘要翻译： 在双配置ATM交换机的上游侧设置有启动/停止设定部，在工作和保护线路的下游侧设置有启动/停止检测部。 在质量监视开始时，启动/停止设置部分设置具有指定标识符的传入单元中的起始位，然后开始计数其标识符与指定标识符匹配的单元数。 开始/停止检测部分在检测到具有开始位的单元时开始对其标识符与检测到的单元的标识符匹配的单元数进行计数。 在质量监视结束时，启动/停止设置部分在具有指定标识符的传入单元中设置停止位，并且因此停止对单元的计数。

    Telephone subscriber accomodation system in a broadband network
    8.
    发明授权
    Telephone subscriber accomodation system in a broadband network 失效
    宽带网络中的电话用户住宿系统

    公开(公告)号：US5521924A

    公开(公告)日：1996-05-28

    申请号：US384224

    申请日：1995-02-06

    申请人： Satoshi Kakuma ,  Shuji Yoshimura ,  Naoyuki Izawa

    发明人： Satoshi Kakuma ,  Shuji Yoshimura ,  Naoyuki Izawa

    IPC分类号： H04L29/06 ,  H04L12/66 ,  H04L12/951 ,  H04M3/00 ,  H04Q11/04 ,  H04J3/24

    CPC分类号： H04Q11/0478 ,  H04L2012/5614 ,  H04L2012/5672

    摘要： On receiving voice data from a subscriber accommodated in a broadband network, a terminal adaptor separately puts the voice data in cells in 8-bit units every 125 .mu.s separately, and transmits the cells by a remote switching unit in the broadband network to subscriber terminal equipment. The subscriber terminal equipment accommodates and processes each item of 8-bit data in 24 channels in the PCM format, puts in cells the PCM-formatted data in 24 channels, and sends the cells sequentially to a broadband network transmission line through the remote switching unit. On receiving the above described data in cells, an adaptor provided between the broadband network and an existing telephone network converts the data to the PCM transmission format, and sends them to the existing telephone network after adding a signaling bit to them.

    摘要翻译： 在从宽带网络中收到的用户接收语音数据的情况下，终端适配器分别将每个125μs的8位单元中的话音数据单独放置，并将宽带网络中的远程交换单元的小区发送给用户终端 设备。 用户终端设备以PCM格式适应和处理24个信道中的每个8位数据项，将PCM格式的数据单元格放入24个信道中，并通过远程交换单元将单元顺序发送到宽带网络传输线 。 在单元中接收上述数据之后，在宽带网络和现有电话网络之间提供的适配器将数据转换为PCM传输格式，并在向它们添加信令位之后将其发送到现有的电话网络。

    Transmission test system in a broadband ISDN
    9.
    发明授权
    Transmission test system in a broadband ISDN 失效
    宽带ISDN中的传输测试系统

    公开(公告)号：US5251204A

    公开(公告)日：1993-10-05

    申请号：US762338

    申请日：1991-09-19

    申请人： Naoyuki Izawa ,  Shuji Yoshimura ,  Satoshi Kakuma

    发明人： Naoyuki Izawa ,  Shuji Yoshimura ,  Satoshi Kakuma

    IPC分类号： H04J3/14 ,  H04J3/16 ,  H04L12/70 ,  H04Q11/04

    CPC分类号： H04Q11/0478 ,  H04J3/14 ,  H04J3/1617 ,  H04J2203/0089 ,  H04L2012/5628 ,  H04L2012/5672

    摘要： The present invention relates to a transmission line test method in the broadband ISDN for assembling an ATM formatted cell into a frame and sending it in the synchronous optical network (SONET) formatted transmission line as a protocol of an optical fiber communication network. First, test data are inserted into an ATM cell according to a command of the central controlling unit in an ATM switching unit. Then, the test cell is sent through an ATM switch in the ATM switching unit after the insertion of the test data; the test data are extracted from the test cell turned around by an ATM layer provided between the ATM switch and the SONET-formatted transmission line or by a subscriber terminal adapter, or from the test frame (including the test cell) turned around by a terminator in the SONET-formatted transmission line or by a network terminator at a subscriber terminal in the transmission line; and finally a transmission test is conducted by checking the data in the line up to each turnaround point.

    摘要翻译： 本发明涉及宽带ISDN中用于将ATM格式化小区组装成帧并在作为光纤通信网络的协议的同步光网络（SONET）格式化传输线路中发送它的传输线路测试方法。 首先，根据ATM交换单元中的中央控制单元的命令将测试数据插入到ATM信元中。 然后，测试单元在插入测试数据之后通过ATM交换单元中的ATM交换机发送; 从由ATM交换机和SONET格式的传输线之间提供的ATM层或由用户终端适配器或由终端器转过的测试框（包括测试单元）转移的测试单元提取测试数据 在SONET格式的传输线路中，或者由传输线路中的用户终端的网络终端器; 最后通过检查直到每个周转点的行中的数据进行传输测试。

    Simultaneously-occuring message control device in a communications system where a message is transmitted using a plurality of data units
    10.
    发明授权
    Simultaneously-occuring message control device in a communications system where a message is transmitted using a plurality of data units 失效
    在使用多个数据单元发送消息的通信系统中同时发生消息控制装置

    公开(公告)号：US5796734A

    公开(公告)日：1998-08-18

    申请号：US633151

    申请日：1996-04-16

    申请人： Naoyuki Izawa ,  Masami Murayama

    发明人： Naoyuki Izawa ,  Masami Murayama

    IPC分类号： H04Q3/00 ,  H04L12/46 ,  H04L12/801 ,  H04L12/811 ,  H04L12/911 ,  H04L12/951 ,  H04Q11/04 ,  H04L12/02

    CPC分类号： H04L12/4604 ,  H04Q11/0478 ,  H04L2012/5645 ,  H04L2012/5652

    摘要： A first storage unit stores a reception count, which is the number of simultaneously-occurring messages for each of subscribers corresponding to subscriber identification information. A second storage unit stores a predetermined number of the simultaneously-occurring messages, which is an upper limit of allowing the messages to occur in parallel, for each of the subscribers corresponding to the subscriber identification information. A third storage unit stores each message identification information corresponding to each of the simultaneously-occurring messages, together with the order of occurrence, for each of the subscribers corresponding to the subscriber identification information. A control unit controls transfers of the simultaneously-occurring messages, by controlling the first, second, and third storage means according to the transfer order identification information, the subscriber identification information, and the message identification information extracted from the received data unit.

    摘要翻译： 第一存储单元存储对应于用户识别信息的每个用户的同时发送消息的数量的接收计数。 对于与用户识别信息对应的每个用户，第二存储单元存储预定数量的同时发生的消息，其为允许消息并行发生的上限。 第三存储单元对应于与用户识别信息对应的每个用户，存储与每个同时发生的消息相对应的每个消息标识信息以及出现顺序。 控制单元通过根据从接收数据单元提取的传送顺序识别信息，用户识别信息和消息识别信息控制第一，第二和第三存储装置来控制同时发生的消息的传送。