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公开(公告)号：EP1028550A4
公开(公告)日：2004-09-08
申请号：EP99940561
申请日：1999-08-30
申请人： MITSUBISHI ELECTRIC CORP , KDD CORP
发明人： UEMURA ARITOMO , ICHIBANGASE HIROSHI , MIZUOCHI TAKASHI , KITAYAMA TADAYOSHI , YAMAMOTO SHU , MIYAZAKI TETSUYA , KABASHIMA TAKATOMI , KOBAYASHI NAOKI
IPC分类号： H04B10/03 , H04B10/032 , H04B10/27 , H04B10/275 , H04B10/29 , H04Q11/00 , H04B10/00
CPC分类号： H04J14/0297 , H04J14/0283 , H04J14/0291 , H04J14/0294 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0024 , H04Q2011/0043 , H04Q2011/0081 , H04Q2011/0092
摘要： Preliminary system transmitted light beam selecting means (12) comprising a 1x2 optical spatial switch and operating system transmitted light beam branching means (11) are provided in a transmitting unit (24). Received light beam switching means (9) comprising a 2x2 optical spatial switch and comprising a 2x2 optical spatial switch and preliminary system received light beam gate means (10) comprising a 1x2 optical spatial switch are provided in a receiving unit (23). Without using any 4x4 optical spatial switch, an operating system can be switched to a preliminary system. A practical optical switch involving problems such as communication cutoff for maintenance work and low use efficiency of transmission line can be provided.
摘要翻译： 在发送单元（24）中提供包括1×2光空间开关和操作系统透射光束分支装置（11）的预备系统透射光束选择装置（12）。 在接收单元（23）中提供包括2x2光学空间开关并且包括2x2光学空间开关的接收光束切换装置（9）和包括1x2光学空间开关的初步系统接收光束门装置（10）。 如果不使用任何4x4光学空间开关，操作系统可以切换到初步系统。 可以提供一种实用的光开关，其涉及诸如用于维护工作的通信切断和传输线的低使用效率的问题。
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公开(公告)号：EP1035669A4
公开(公告)日：2004-10-20
申请号：EP99940529
申请日：1999-08-27
申请人： MITSUBISHI ELECTRIC CORP , KDD CORP
发明人： MIZUOCHI TAKASHI , OSAKI YOJIRO , UEMURA ARITOMO , ICHIBANGASE HIROSHI , MATSUSHITA KIWAMI , KITAYAMA TADAYOSHI , YAMAMOTO SHU , MIYAZAKI TETSUYA , KABASHIMA TAKATOMI , KOBAYASHI NAOKI
IPC分类号： H04B10/07 , H04B10/077 , H04B10/079 , H04B10/524 , H04B10/556 , H04J3/14 , H04J14/00 , H04J14/02 , H04L1/20 , H04Q11/04 , H04B10/08
CPC分类号： H04L1/20 , H04B10/0775 , H04B2210/071 , H04B2210/072 , H04B2210/078 , H04J3/14 , H04J14/02 , H04J14/0227 , H04J14/0245 , H04J14/0249 , H04J14/0283 , H04J2203/0057
摘要： An optical signal quality monitor for simply monitoring the quality of an optical signal with high efficiency and accuracy without inviting increase in manufacturing cost, circuit scale, and power consumption. The bit rate of a monitoring signal light beam is lower than that of a main signal light beam transmitted in an optical communication system. The reception electric bandwidth of a receiver for receiving the monitoring signal light beam is equal to or wider than that of a receiver for receiving the main signal light beam. The monitoring signal light beam includes an SOH (Section Over Head) frame. Any error in the BIP (Bit Interleaved Parity) bytes of the SOH is detected. Thus, the quality of an optical communication system, especially a light-wave network is monitored.
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公开(公告)号：EP1241836A4
公开(公告)日：2005-06-01
申请号：EP01961219
申请日：2001-08-30
发明人： TAKEMOTO MICHIYA , YOSHIDA TOSHIKAZU , MUKAI HIROAKI , ASASHIBA YOSHIHIRO , ICHIBANGASE HIROSHI , KOZAKI SEIJI , IWASAKI MITSUYOSHI
CPC分类号： H04Q11/0067 , H04Q11/0062 , H04Q2011/0039 , H04Q2011/0064 , H04Q2011/0081
摘要： To perform redundant change of a child station device (52), a parent station device (51) sends a downstream PST message to the child station device (52) and after a predetermined transmission timing time sends a PLOAM grant for granting the child station device (52) to send an upstream PST message to the child station device (52).
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4.发明公开LIGHT BURST TRANSMISSION/RECEPTION CONTROL SYSTEM, PARENT STATION DEVICE USED IN THE SAME, CHILD STATION DEVICE, AND LIGHT BURST TRANSMISSION/RECEPTION CONTROL METHOD 有权用于发送/接收射线字控制系统，在此使用主站的设备侧STATION APPARATUS AND METHOD FOR CONTROLLING发送/接收射线字
公开(公告)号：EP1206078A4
公开(公告)日：2009-07-22
申请号：EP01936916
申请日：2001-06-08
发明人： KOZAKI SEIJI , ICHIBANGASE HIROSHI
IPC分类号： H04J14/08 , H04B10/27 , H04B10/272 , H04B10/556 , H04J3/16 , H04L12/44 , H04Q11/00
CPC分类号： H04Q11/0067 , H04L12/5601 , H04L2012/561 , H04L2012/5632 , H04Q11/0062 , H04Q2011/0064 , H04Q2011/0086 , H04Q2011/0094
摘要： A parent station device (10) creates band assignment information including identification of child station devices (20-1 to 20-n) and data types transmitted by the child station devices, and sends it to the child station devices (20-1 to 20-n). Each of the child station devices (20-1 to 20-n) checks if the band assignment information is for the data type of the child station device. If the band assignment information is for the data types of the child station device, the child station device controls the transmission of data to the parent station device (10) for each data type represented by the band assignment information.
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公开(公告)号：EP1379042A4
公开(公告)日：2008-11-12
申请号：EP02705207
申请日：2002-03-14
发明人： UEMURA ARITOMO , KOZAKI SEIJI , KUBO KAZUO , ICHIBANGASE HIROSHI
IPC分类号： G02F1/01 , H04B10/00 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/60 , H04B10/61 , H04J3/00 , H04J3/04 , H04J3/06 , H04J14/00 , H04J14/02 , H04L5/14 , H04L25/49 , H04L25/497 , H04B10/04 , H04J14/08
CPC分类号： H04L25/4923 , H04J3/047 , H04J3/0685
摘要： An encoder (4) comprises flip-flop circuits (4a, 4b) which latch two-system signals having B/2 transmission speed at a B/2 frequency and output them, an adder (4f) which adds the respective output signals of the flip-flop circuits (4a, 4b) and outputs the sum, and a delayer (4e) which delays the output signal from the flip-flop circuit (4b) by 1/B hr behind the output signal from the flip-flop circuit (4a) on the input timing of the adder (4f).
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公开(公告)号：EP1152541A4
公开(公告)日：2007-01-03
申请号：EP00979951
申请日：2000-12-06
发明人： KUBO KAZUO , YOSHIDA HIDEO , ICHIBANGASE HIROSHI , TAGA HIDENORI , SHIBANO EIICHI , YASUDA TADAMI
CPC分类号： H03M13/2921 , H03M13/15 , H03M13/1515 , H03M13/2721 , H03M13/6561
摘要： An FEC frame forming method and an FEC multiplexing method, wherein the order of information is rearranged by a first interleave circuit (32), a first error correcting code is formed by an RS (239, 223) encoding circuit (33), the order is arranged back into the original order by a first deinterleave circuit (34), and a second error correcting code is formed by an RS (255, 239) encoding circuit (5). The second error correcting code is decoded by an RS (255, 239) decoding circuit (11) to correct errors in the information, the order of information is rearranged by a second interleave circuit (35), the first error correcting code is decoded by an RS (239, 223) decoding circuit (36) to correct the remaining errors in the information, and the order is arranged back into the original order by a second deinterleave circuit (37).
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7.发明公开OPTICAL TRANSMISSION SYSTEM, FEC MULTIPLEXER, FEC MULTIPLEXER/SEPARATOR, AND ERROR CORRECTION METHOD 审中-公开光传输系统，FEC多路复用，纠错FEC多路复用器/断路器和方法
公开(公告)号：EP1195935A4
公开(公告)日：2005-07-20
申请号：EP01930183
申请日：2001-05-16
发明人： KUBO KAZUO , YOSHIDA HIDEO , ICHIBANGASE HIROSHI
CPC分类号： H03M13/29 , H03M13/03 , H03M13/15 , H03M13/1515 , H03M13/2909 , H04L1/0041 , H04L1/005 , H04L1/0057 , H04L1/0066 , H04L1/0071
摘要： An FEC multiplexing circuit (2) is so constituted that a first memory circuit (15) is arranged at the front stage of a first RS coding circuit (16) and a second memory circuit (17) at the front stage of a second RS coding circuit (18) to execute error correction coding by a combination of different pieces of data in two directions, and then to generate an FEC frame by multiplexing the error correction codes. An FEC multiplexing/separating circuit (6) is so constituted that a third memory circuit (42) is arranged at the rear stage of a first RS decoding circuit (41) and a fourth memory circuit (44) at the rear stage of a second RS decoding circuit (43) to execute error correction by a combination of different pieces of data in two directions, and then to regenerate the original information data by multiplexing parallel data read out of the fourth memory circuit (44).
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