公开(公告)号：US6141320A

公开(公告)日：2000-10-31

申请号：US934505

申请日：1997-09-19

申请人： Fumihiro Ikawa

发明人： Fumihiro Ikawa

IPC分类号： H04L1/22 ,  H04J3/08 ,  H04Q11/04 ,  H04J1/16

CPC分类号： H04J3/085 ,  H04Q11/0478 ,  H04J2203/006

摘要： Nested APS is implemented in a simple configuration for synchronous transmission systems such as SONET and SDH. Bits 5 to 8 of the received K1 byte are compared with line numbers of lines terminated at the receiving node, and when they do not match, the received K1 byte is sent via a first selection circuit for further transmission. At the same time, the K2 byte incoming from the opposing direction is redirected via second selection circuit for transmission.

摘要翻译： 嵌套APS以同步传输系统（如SONET和SDH）的简单配置实现。 将接收的K1字节的位5到8与在接收节点终止的线路的行号进行比较，并且当它们不匹配时，经由第一选择电路发送接收的K1字节以进一步发送。 同时，从相反方向进入的K2字节通过第二选择电路被重定向以进行传输。

公开(公告)号：US5073774A

公开(公告)日：1991-12-17

申请号：US637991

申请日：1991-01-03

申请人： Fumihiro Ikawa

发明人： Fumihiro Ikawa

IPC分类号： G06F11/20 ,  H04B1/74

CPC分类号： H04B1/74

摘要： A one-to-one line switching system for switching between a hot line and a standby line in a one-to-one correspondence. To enable removal of a switching unit while in use, from a mother board for change over or repair, a pair of switching units (1 and 2 or 3 and 4) is provided at the transmitting part and at the receiving part, respectively, the earth element in one of the pair being connected to the other of the pair and the other of the pair being pulled up by a voltage, whereby, when one of the pair in use is removed, the other of the pair can pass the input signal.

摘要翻译： 一对一线路切换系统，用于在一对一的对应之间切换热线和备用线路。 为了在使用中能够移除开关单元，从母板进行切换或修理，在发送部和接收部分别设置一对开关单元（1和2或3和4），所述开关单元 一对中的一个地线元件连接到该对中的另一个，另一对被一个电压拉起，从而当一对中的一个被去除时，该对中的另一个可以通过输入信号 。

公开(公告)号：US06614753B2

公开(公告)日：2003-09-02

申请号：US09109289

申请日：1998-06-30

申请人： Fumihiro Ikawa

发明人： Fumihiro Ikawa

IPC分类号： H04L100

CPC分类号： H04B10/032 ,  H04J3/14 ,  H04J2203/006

摘要： An optical receiver unit is connected to each of a work optical line and a protection optical line, and after an optical signal is converted to an electrical signal, only the overhead of the signal is extracted. Furthermore, bytes accommodated in the overhead are demultiplexed. K bytes are transferred to both an APS processing unit and a mismatching judgement unit. The mismatching judging unit judges whether or not a WTR, DNR, RR, etc. are set in the K1 byte received from the opposite station, compares the mode of the opposite station with the mode of its own station, and detects a mismatching between the modes of the opposite and own stations. The result of the detection is transferred to the APS processing unit, and if there is a mismatching, the mismatching is solved.

摘要翻译： 光接收器单元连接到工作光线路和保护光线路中的每一个，并且在将光信号转换为电信号之后，仅提取信号的开销。 此外，开销中容纳的字节被解复用。 K字节被传送到APS处理单元和不匹配判断单元。 不匹配判断单元判断从相对站接收的K1字节中是否设置了WTR，DNR，RR等，将对方站的模式与其本站的模式进行比较，并且检测到 相对和自己的车站的模式。 检测结果被传送到APS处理单元，如果存在不匹配，则不匹配被解决。

公开(公告)号：US6147783A

公开(公告)日：2000-11-14

申请号：US475438

申请日：1995-06-07

申请人： Fumihiro Ikawa

发明人： Fumihiro Ikawa

IPC分类号： H04J3/08 ,  H04J3/14 ,  H04J14/00

CPC分类号： H04J3/085 ,  H04J3/14

摘要： An optical transmission system containing a protection system and a plurality of working systems. When a trouble occurs in the protection system to which one of the working system is switched, a line alarm indication signal (LINE AIS), which can be detected in a reception portion of a piece of terminal equipment, and can activate a switch control circuit, is transmitted to a piece of terminal equipment on the reception side. In response to the receipt of the line alarm indication signal (LINE AIS), the piece of terminal equipment on the reception side transmits a far end receive failure signal (FERF) through an protection system optical transmission line (PTCT2) to a piece of protection system terminal equipment on the transmission side, and transmits a path alarm indication signal (PATH AIS) which does not activate the switch control circuit, through an optical transmission line in the same terminal station to the pieces of working system terminal equipment in the same terminal station on the reception side.

摘要翻译： 一种包含保护系统和多个工作系统的光传输系统。 当在工作系统切换到的保护系统中发生故障时，可以在终端设备的接收部分中检测到的线路报警指示信号（LINE AIS），并且可以启动开关控制电路 被发送到接收侧的终端设备。 响应于线路报警指示信号（LINE AIS）的接收，接收端的终端设备通过保护系统光传输线（PTCT2）将远端接收故障信号（FERF）发送到一个保护 发送侧的系统终端设备，通过同一终端中的光传输线将不启动开关控制电路的路径报警指示信号（PATH AIS）发送到同一终端中的工作系统终端设备 车站在接待端。

公开(公告)号：US5757769A

公开(公告)日：1998-05-26

申请号：US406320

申请日：1995-03-17

申请人： Fumihiro Ikawa

发明人： Fumihiro Ikawa

IPC分类号： H04L1/22 ,  H04B1/74 ,  H04J3/00 ,  H04J3/14 ,  H04L29/14 ,  H04Q11/04 ,  H04J1/16

CPC分类号： H04B1/74 ,  H04J3/14 ,  H04J2203/006

摘要： A line switching control system provided in each of stations connected by a first type line and a second type line in a synchronous communication network system in which frame data including an overhead is transmitted through the first type line or the second type line between the stations. The line switching control system includes a protection switching unit for switching the first type line used as a work line to the second type line defined as a protection line in a predetermined switching mode when a failure occurs in the first type line, and a unit, when the failure first type line is recovered, for transmitting line recovery mode information representing whether a line recovery mode is a REV mode in which the recovered first type line is reverted as the work line or a NON-REV mode in which the second type line is continuously used as a new work line and the recovered first type line is defined as a new protection line, the line recovery mode information being included in the overhead of the frame data.

摘要翻译： 在同步通信网络系统中，通过第一类型线路和第二类型线路连接的每个站中提供的线路交换控制系统，其中包括开销的帧数据通过站点之间的第一类型线路或第二类型线路发送。 线路切换控制系统包括：保护切换单元，用于当在第一类型线路中发生故障时将用作工作线的第一类型线路切换到以预定切换模式定义为保护线路的第二类型线路;以及单元， 当恢复故障第一类型线路时，用于发送表示线路恢复模式是恢复的第一类型线路被还原为工作线路的REV模式的线路恢复模式信息还是其中第二类型线路的NON-REV模式 被连续地用作新的工作线路，并且将恢复的第一类型线路定义为新的保护线路，线路恢复模式信息被包括在帧数据的开销中。

公开(公告)号：US5091796A

公开(公告)日：1992-02-25

申请号：US637220

申请日：1991-01-03

申请人： Koichi Nishimura ,  Ikuo Taniguchi ,  Fumihiro Ikawa ,  Masumi Kurokawa

发明人： Koichi Nishimura ,  Ikuo Taniguchi ,  Fumihiro Ikawa ,  Masumi Kurokawa

IPC分类号： H04B1/74 ,  H04B10/03 ,  H04B10/032 ,  H04B10/035 ,  H04B10/079 ,  H04B10/29

CPC分类号： H04B1/74

摘要： A communication system includes a plurality of stations, a first working line coupling adjacent stations among the plurality of stations, a second working line passing predetermined stations among the plurality of stations without dropping therein, and a protection line provided in common for the first working line and the second working line, a supervisory signal always passing through the protection line. Each of the stations includes an internal circuit for receiving an input transmission signal from the first working line and sending an output transmission signal to the first working line. Each station also includes a switching portion for passing the protection line without dropping in each of the stations in a normal mode and for connecting the protection line to the internal circuit in an alarm mode so that the input transmission signal is received from an upstream side via the protection line instead of the first working line and the supervisory signal which is generated from the output transmission signal is output toward a downstream side via the protection line.

公开(公告)号：US5978354A

公开(公告)日：1999-11-02

申请号：US617288

申请日：1996-03-18

申请人： Hisashi Taketomi ,  Hatsumi Iino ,  Fumihiro Ikawa ,  Kanji Naito ,  Junichi Moriyama

发明人： Hisashi Taketomi ,  Hatsumi Iino ,  Fumihiro Ikawa ,  Kanji Naito ,  Junichi Moriyama

IPC分类号： H04B10/03 ,  H04B10/032 ,  H04B10/07 ,  H04B10/077 ,  H04B10/079 ,  H04B10/27 ,  H04B10/29 ,  H04J3/00 ,  H04J3/14 ,  H04L1/22 ,  H04Q11/04 ,  H04J1/16 ,  H04J3/08

CPC分类号： H04J3/14 ,  H04L1/22 ,  H04J2203/006

摘要： Disclosed is an optical transmission system for transmitting data via an optical transmission line in accordance with a frame format having overhead which includes a K1 byte used for a switching request and a K2 byte used to respond to the K1 byte. The optical transmission system includes N sets of working terminal stations, one set of protection terminal stations, N-number of optical transmission lines for interconnecting respective ones of the N sets of working terminal stations one optical protection transmission line for interconnecting the one set of protection terminal stations, repeater stations, which are provided in the optical transmission lines between the N sets of working terminal stations, for demultiplexing and outputting data extracted from the transmission lines or for multiplexing data and inserting the data in the transmission lines, protection transmission line connecting units, which are provided at positions in a protection transmission line corresponding to positions at which the repeater stations are disposed, for switching a failed transmission line to the protection transmission line in every section demarcated by the repeater stations. A working terminal station or repeater station that has detected occurrence of failure in a transmission line of a prescribed section sends K1 byte to and receives K2 byte from an opposing working terminal station or repeater station of the section via a protection terminal station or protection transmission line connecting unit and switches the failed transmission line section to the protection transmission line.

摘要翻译： 公开了一种用于根据具有包括用于切换请求的K1字节和用于响应K1字节的K2字节的开销的帧格式经由光传输线路发送数据的光传输系统。 光传输系统包括N组工作终端站，一组保护终端站，N个用于互连N个工作终端站中的各个的光传输线路，一个用于互连一组保护的光保护传输线 终端站，中继站，设置在N组工作终端站之间的光传输线路中，用于解复用和输出从传输线提取的数据或多路复用数据并将数据插入传输线路中，保护传输线路连接 设置在与设置中继站的位置相对应的保护传输线路中的位置，用于在由中继站划分的每个区段中将故障传输线路切换到保护传输线路。 检测到规定部分的传输线路发生故障的工作终端站或中继站通过保护终端站或保护传输线路向该区段的相对工作终端站或中继站发送K1字节并从其接收K2字节 连接单元，并将故障的传输线部分切换到保护传输线。