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1. 发明授权

US5442621A ISDN switching system having testing facilities 失效
标题翻译：具有测试设施的ISDN交换系统
公开(公告)号：US5442621A
公开(公告)日：1995-08-15
申请号：US981557
申请日：1992-11-25
申请人： Noboru Ise , Kenji Tsutsumi , Ryoji Shimozono , Aya Takagi , Hiroyuki Kudoh , Hiroshi Adachi , Yoshihiro Shimizu , Kunio Yamamoto
发明人： Noboru Ise , Kenji Tsutsumi , Ryoji Shimozono , Aya Takagi , Hiroyuki Kudoh , Hiroshi Adachi , Yoshihiro Shimizu , Kunio Yamamoto
IPC分类号： H04Q11/04 , H04L1/14
CPC分类号： H04Q11/045 , H04Q2213/13092 , H04Q2213/1316 , H04Q2213/13166 , H04Q2213/13204 , H04Q2213/13216
摘要： An ISDN switching system having facilities for testing an ISDN signal composed of B-channels and D-channels at least. The testing facilities can achieve a B-channel test and D-channel test selectively with simple construction by employing a converting unit in the system. The converting unit enables creation of a connection path between a test equipment and an object to be tested through an ISDN exchange and thus the ISDN signals for the test can be treated as usual ISDN signals. Thereby, the test equipment and the object can freely be connected to each other.
摘要翻译：具有至少用于测试由B信道和D信道组成的ISDN信号的设施的ISDN交换系统。测试设备可以通过采用系统中的转换单元，通过简单的结构选择性地实现B通道测试和D通道测试。转换单元允许通过ISDN交换机在测试设备和要测试的对象之间建立连接路径，因此用于测试的ISDN信号可以被视为通常的ISDN信号。因此，测试设备和对象可以自由地彼此连接。

2. 发明授权

US4812839A System for controlling network activation sequence 失效
标题翻译：控制网络激活序列的系统
公开(公告)号：US4812839A
公开(公告)日：1989-03-14
申请号：US170120
申请日：1988-03-15
申请人： Sumie Okada , Takashi Nara , Takashi Hatano , Yutaka Kawato , Ryoji Shimozono , Kenji Tsutsumi , Yasunori Ogawa , Yasuo Tanaka
发明人： Sumie Okada , Takashi Nara , Takashi Hatano , Yutaka Kawato , Ryoji Shimozono , Kenji Tsutsumi , Yasunori Ogawa , Yasuo Tanaka
IPC分类号： H04L12/00 , H04L12/12 , H04Q11/04 , G08B5/36 , H04L7/10
CPC分类号： H04Q11/0428 , Y10S379/902
摘要： A digital subscriber line formed by terminal equipment, a network control device including a plurality of the terminal equipment, and an exchange terminal. In a waiting state of the digital subscriber line, the network control device is placed in a state which can only receive a signal. A sending portion of the network control device is driven when, at a call from the terminal equipment, the terminal control device receives a line activation signal from the exchange equipment and when, at an incoming state from the state from the exchange terminal, the terminal control device receives a line activation from the exchange equipment. The synchronization pattern signal is sent from the sending portion to the exchange terminal so that the synchronization of the exchange terminal is established.

3. 发明授权

US4766594A Digital network system having arrangement for testing digital subscriber line 失效
标题翻译：具有用于测试数字用户线路的数字网络系统
公开(公告)号：US4766594A
公开(公告)日：1988-08-23
申请号：US863040
申请日：1986-05-14
申请人： Yasunori Ogawa , Kenji Tsutsumi , Yasuo Tanaka , Ryoji Shimozono
发明人： Yasunori Ogawa , Kenji Tsutsumi , Yasuo Tanaka , Ryoji Shimozono
IPC分类号： H04M3/30 , H04L12/26 , H04M3/24 , H04Q11/04 , H04B3/46
CPC分类号： H04Q11/045 , H04M3/245 , H04M3/303 , H04M3/301
摘要： A digital network system having an arrangement for testing a digital subscriber line includes a switching device, an exchange terminal device as a subscriber circuit connected with the switching device, a subscriber line connected with the exchange terminal device, a network terminal device at a subscriber's side connected between the subscriber line and terminal equipment devices. The network terminal device includes a turn-around portion for forming a turn-around loop through which the turning-around of a signal to the subscriber line connected with the network termination device is carried out, and a discrimination portion for detecting that data transmission can be carried out and cancelling the formation of the turn-around loop. The turn-around loop is formed when a frame synchronization bit signal from the exchange terminal device is received by the network terminal device and cancelled when the discrimination portion detects that data transmission can be carried out. Communication for either a monitoring of transmission or a bit error testing can be carried out between the network terminal device and the switching device while the turn-around loop is formed, and data transmission between the exchange terminal device and the terminal equipment devices can be carried out after the turn-around loop is cancelled.
摘要翻译：具有用于测试数字用户线路的布置的数字网络系统包括交换设备，作为与交换设备连接的用户电路的交换终端设备，与交换终端设备连接的用户线路，在用户侧的网络终端设备连接在用户线路和终端设备设备之间。网络终端装置包括转向部，用于形成转向回路，通过该回转回路执行到与网络终端装置连接的用户线路的信号的转弯，以及用于检测数据传输的判别部分执行并取消回转循环的形成。当来自交换终端设备的帧同步位信号被网络终端设备接收时，形成转向环路，并且当鉴别部分检测到可以执行数据传输时被解除。在形成转向环路的同时，可以在网络终端装置与交换装置之间进行用于传输监视或位错误测试的通信，并且可以承载交换终端装置与终端设备装置之间的数据传输在转向循环被取消之后出来。

4. 发明授权

US4754273A System for controlling network activation sequence 失效
标题翻译：控制网络激活序列的系统
公开(公告)号：US4754273A
公开(公告)日：1988-06-28
申请号：US87960
申请日：1987-08-14
申请人： Sumie Okada , Takashi Nara , Takashi Hatano , Yutaka Kawato , Ryoji Shimozono , Kenji Tsutsumi , Yasunori Ogawa , Yasuo Tanaka
发明人： Sumie Okada , Takashi Nara , Takashi Hatano , Yutaka Kawato , Ryoji Shimozono , Kenji Tsutsumi , Yasunori Ogawa , Yasuo Tanaka
IPC分类号： H04L12/00 , H04L12/12 , H04Q11/04 , H04L7/08 , H03H7/30 , H04L7/10
CPC分类号： H04Q11/0428 , Y10S379/902
摘要： A digital subscriber line formed by terminal equipment, a network control device including a plurality of the terminal equipment, and an exchange terminal. In a waiting state of the digital subscriber line, the network control derive is placed in a state which can only receive a signal. A sending portion of the network control device is driven when, at a call from the terminal equipment, the terminal control device receives a line activation signal from the exchange equipment and when, at an incoming state from the state from the exchange terminal, the terminal control device receives a line activation from the exchange equipment. The synchronization pattern signal is sent from the sending portion to the exchange terminal so that the synchronization of the exchange terminal is established.
摘要翻译：由终端设备形成的数字用户线，包括多个终端设备的网络控制设备和交换终端。在数字用户线的等待状态下，网络控制导出被置于只能接收信号的状态。网络控制装置的发送部分在来自终端设备的呼叫终端控制装置从交换设备接收到线路激活信号时，以及在来自交换终端的状态的进入状态下，终端控制装置从交换设备接收线路激活。同步模式信号从发送部分发送到交换终端，从而建立交换终端的同步。

5. 发明授权

US4599583A Mixed dual frequency generating system 失效
标题翻译：混合双频发生系统
公开(公告)号：US4599583A
公开(公告)日：1986-07-08
申请号：US671775
申请日：1984-11-15
申请人： Ryoji Shimozono , Yasunori Ogawa , Yasuo Tanaka , Shigeo Sano
发明人： Ryoji Shimozono , Yasunori Ogawa , Yasuo Tanaka , Shigeo Sano
IPC分类号： H04L27/20 , H03B28/00 , H04L27/12
CPC分类号： H04L27/2014
摘要： A mixed dual frequency generating system for generating a digital FSK signal or a signal including two mixed frequencies includes a ROM which stores in consecutive addresses sampled data obtained by sampling a sine wave at a sampling frequency. The mixed dual frequency generating system also includes a data extracting circuit for extracting the sampled data from the ROM at the sampling frequency using an extracting step number. An output data fixing circuit changes alternate data extracted from the ROM to data "O", so that a signal having two mixed frequencies can be obtained.
摘要翻译：用于产生数字FSK信号或包括两个混合频率的信号的混合双频产生系统包括ROM，其以连续的地址存储以采样频率对正弦波进行采样获得的采样数据。混合双频发生系统还包括一个数据提取电路，用于使用提取步骤号从采样频率的ROM中提取采样数据。输出数据固定电路将从ROM提取的交替数据改变为数据“O”，从而可以获得具有两个混合频率的信号。

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