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    • 2. 发明授权
    • Procedure for switching-over systems
    • 切换系统的过程
    • US5488606A
    • 1996-01-30
    • US216149
    • 1994-03-21
    • Satoshi KakumaShuji YoshimuraKazuo HajikanoMasami MurayamaYuzo Okuyama
    • Satoshi KakumaShuji YoshimuraKazuo HajikanoMasami MurayamaYuzo Okuyama
    • H04Q3/00H04L12/70H04L29/14H04L12/56
    • H04L49/153H04L49/552H04L69/40H04L2012/5627H04L49/1523H04L49/30
    • An ATM (asynchronous transfer mode) exchange has a buffer for system #0 and a buffer for system #1 providing P-MEM's for storing data including an A bit and for a VCI/VPI currently in use is set to "1'. Upon detecting a switchover between the systems, every B bit is reset to "0". When the exchange while changing from a master to a slave receives a cell having a slave indication and while changing from a slave to a master it receives a cell having a master indication, respective systems rewrite B bits for VCI/VPI's of respective cells to "1". In the meantime, each of the P-MEM's calculates exclusive "OR" operations between the A bit and the B bit for every VCI/VPI, and further obtains a disjunction among all the exclusive "OR" operations thus obtained. Then, when both P-MEM's obtain "0" for their respective disjunctions, cells are read out from one of the buffers in the system changing from a slave to a master. This enables the ATM exchange having a switch duplexed by mutually asynchronous active and backup systems to switchover the systems without causing a cell to be duplicated or lost.
    • ATM(异步传输模式)交换机具有用于系统#0的缓冲器和用于系统#1的缓冲器,提供用于存储包括A位的数据的P-MEM,并且当前使用的VCI / VPI被设置为“1” 检测系统之间的切换,每个B位复位为“0”,当从主机切换到从机的交换机接收到具有从机指示的单元,并且在从从机更改为主机时,接收具有 主指示,相应的系统将各单元的VCI / VPI的B位重写为“1”,同时每个P-MEM针对每个VCI / VPI计算A位和B位之间的独占“或”运算, 并且在所得到的所有排他“OR”运算中进一步获得分离,然后,当两个P-MEM对于它们各自的分离获得“0”时,从系统中的缓冲器之一读出小区从从属设备 主机,这使得ATM交换机具有通过相互异步双工的交换机 主动和备份系统切换系统,而不会导致单元被重复或丢失。
    • 4. 发明授权
    • Delay-in-frames correcting system in a PCM transmission line
    • PCM传输线路中的帧间校正系统
    • US5654967A
    • 1997-08-05
    • US565035
    • 1995-11-30
    • Yuzo OkuyamaSatoshi Kakuma
    • Yuzo OkuyamaSatoshi Kakuma
    • H04J3/06H04L7/08H04Q11/04H04Q11/06H04L12/56
    • H04Q11/06
    • A delay-in-frames correction system in a switch unit in a PCM transmission line is used for data communication. A channel data storage unit is provided to temporarily store data corresponding to each channel on the output side or the input side of the switch unit in each direction in the PCM transmission line. A data delay control unit delays data among the data corresponding to channels and stored in the channel data storage unit. The data corresponding to a plurality of channels is output in order in the same frame and delayed by the number of frames indicated by the most delayed data corresponding to channels to provide frame correction instruction information for outputting a data string in the same frame.
    • 在PCM传输线中的开关单元中的延迟帧校正系统用于数据通信。 提供一个通道数据存储单元,用于在PCM传输线中的每个方向上临时存储与开关单元的输出侧或输入侧相对应的每个通道的数据。 数据延迟控制单元将对应于通道的数据中的数据延迟并存储在通道数据存储单元中。 对应于多个信道的数据在相同帧中按顺序输出,并延迟由对应于信道的最延迟数据指示的帧数,以提供用于在同一帧中输出数据串的帧校正指令信息。
    • 6. 发明授权
    • Message information terminating system
    • 消息信息终端系统
    • US5455824A
    • 1995-10-03
    • US132044
    • 1993-10-05
    • Yuzo OkuyamaSatoshi KakumaYasunori TonookaMegumi Shibata
    • Yuzo OkuyamaSatoshi KakumaYasunori TonookaMegumi Shibata
    • H04J3/06H04J3/12H04Q3/60H04Q11/04
    • H04Q3/602H04J3/0602H04J3/125H04Q11/0407
    • A message information terminating system in a switching center is connected to a plurality of remote stations by Derived Data Link interfaces and includes transmission lines connected to the same data terminal unit of the switching center, for transmitting message information containing various information such as subscriber information with communication data by framing bits between the switching center and each of said remote stations, and a message terminating equipment provided with a processing unit for analyzing the message information and disposed in a network at the switching center. The data terminal unit collects the message information from a plurality of the remote stations and transmits the message information to the message terminating equipment through the network. The message terminating equipment separates the message information from each of the remote stations, analyzes the message information, using the processing unit, and sends normal message information to a control processor in the switching center when the message terminating equipment detects a normal message.
    • 交换中心的消息信息终端系统通过派生数据链路接口连接到多个远程站,并且包括连接到交换中心的相同数据终端单元的传输线,用于发送包含诸如用户信息的各种信息的消息信息, 通信数据通过在交换中心和每个所述远程站之间进行比特比特,以及消息终端设备,其具有用于分析消息信息并且被布置在交换中心的网络中的处理单元。 数据终端单元从多个远程站收集消息信息,并通过网络将消息信息发送到消息终端设备。 消息终端设备从每个远程站分离消息信息,使用处理单元分析消息信息,并且当消息终端设备检测到正常消息时,将正常消息信息发送到交换中心中的控制处理器。
    • 7. 发明授权
    • Data link terminator
    • 数据链接终结器
    • US5418788A
    • 1995-05-23
    • US168398
    • 1993-12-17
    • Yuzo OkuyamaSatoshi Kakuma
    • Yuzo OkuyamaSatoshi Kakuma
    • G03C1/76H04J3/00H04J3/16H04L12/52H04M7/00H04Q11/04H04J3/02
    • H04J3/1641H04Q11/04
    • A multiplexer multiplexes data of data links received from respective digital lines over to an intraoffice link. A terminator extracts data of the data links received from the respective digital lines multiplexed over to a corresponding intraoffice link, and processes them in a batch. When respective data links are configured by using frame synchronization bits, e.g. at a predetermined frame timing for multiframes, the multiplexer multiplexes frame synchronization bits without shedding their synchronization pattern over to the intraoffice link, and the terminator extracts only the received data of the data links by the frame synchronization bits. In this case, on multiplexing only the frame synchronization bits from respective digital lines, the multiplexer multiplexes identification data indicating that the multiplexing timing is at the head end frames of multiframes. The terminator extracts the identification data and identifies the timing for the head end frames of the multiframes.
    • 多路复用器将从各个数字线路接收到的数据链路的数据复用到一个局内链路。 终端器提取从相应的数字线路接收到的数据链路的数据,复用到相应的局内链路,并且批量处理它们。 当各个数据链路通过使用帧同步比特来配置时,例如, 在多帧的预定帧定时,多路复用器多路复用帧同步比特,而不将其同步模式切换到帧内链路,并且终端器仅通过帧同步比特提取数据链路的接收数据。 在这种情况下,在仅复用来自各个数字线路的帧同步位的情况下,复用器复用指示复用定时位于多帧的前端帧的识别数据。 终结器提取识别数据并识别多帧头端帧的定时。