专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2002101049A OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD 失效
公开(公告)号：JP2002101049A
公开(公告)日：2002-04-05
申请号：JP2000290329
申请日：2000-09-20
申请人： HITACHI LTD
发明人： NOGUCHI MASAZUMI , KAWASAKI KAZUHIRO , KATAYAMA MASAAKI , TAKAYAMA YUJI , TARUKI RYOSUKE
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H04B10/079 , H04B10/29 , H04B10/293 , H04B10/296 , H04B10/564 , H04B10/572 , H04J14/00 , H04J14/02 , H04B10/17 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/16
摘要： PROBLEM TO BE SOLVED: To suppress occurrence of bit errors in a light receiver, which is positioned at the final stage of a transmission path and detects a light signal per wave, and the breakage of a receiver, when the number of wavelengths stored in the input of a wavelength-multiplexed light signal fluctuates. SOLUTION: This optical transmitter has a light branching unit 104, which receives the input of a wavelength-multiplexed signal light having a plurality of light wavelengths and outputs a wave-branched signal light where the wave is branched separately for each light wavelength, a plurality of light branching units 105 which receive the input of the wave-branched signal lights and branch them severally into main signal lights and first monitor lights, and a light wave combiner 114 which receives the input of a plurality of main signal lights and couples the waves and outputs it, an optical amplifier 115 which receives the input of the wave-combined main signal light and amplifies and outputs it, a second light branching unit 116 which receives the input of the amplified main signal light and branches its one part and outputs a second monitor light, and an optical amplifier controller 400, which receives the input of a plurality of first monitor lights and the second monitor light and outputs a optical amplifier control signal to control the optical amplifier.

2. 发明专利

JPH11220448A METHOD AND SYSTEM FOR MULTIPLEX TRANSMISSION 失效
公开(公告)号：JPH11220448A
公开(公告)日：1999-08-10
申请号：JP28066598
申请日：1998-10-02
申请人： HITACHI LTD
发明人： OHIRA MASATERU , NOGUCHI MASAZUMI , MORI TAKASHI , KIMURA MITSUNOBU , KATO KOJI
IPC分类号： H04J3/00 , H04J3/14 , H04L12/437
摘要： PROBLEM TO BE SOLVED: To surely conduct changeover of a redundancy system of transmission lines. SOLUTION: On the occurrence of a line interruption fault on OC 12 transmission lines from a multiplexer A to a multiplexer F, the multiplexer F detects that a transmission line is interrupted for a reception signal from the OC-12 transmission lines, and transfers automatic protection switching(APS) bytes from the multiplexer A to a multiplexer G. In this case, the APS bytes are inserted to an unspecified area of an OC-192 transmission overhead determined in advance for passing-transfer of the APS bytes. The multiplexer G inserts the received passing-transfer APS bytes to a specified position of the APS bytes on the OC-12 transmission overhead and sends resulting data to the multiplexer D. Thus, a redundancy changeover between the multiplexer A and D is realized in this way.

3. 发明专利

JP2014110581A Passive optical network 审中-公开
标题翻译：被动光网络
公开(公告)号：JP2014110581A
公开(公告)日：2014-06-12
申请号：JP2012264977
申请日：2012-12-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUDA SHOGO , NOGUCHI MASAZUMI , MORITA YOSHINOBU
IPC分类号： H04L12/44
摘要： PROBLEM TO BE SOLVED: To implement efficient power reduction effect by individually setting ONU low power consumption mode duration and an ONU function stop range for certain time zone and for each user, depending on a difference in lifestyle or a network utilization state in each user.SOLUTION: An OLT or ONU comprises: a traffic aggregation table database for aggregating user network access traffic for each user; a per-user traffic statistic database for storing a traffic statistic for certain time zone and for each user; a database for storing an ONU low power consumption mode duration setting schedule generated on the basis of the per-user traffic statistic database; and a database for storing an ONU function stop range setting schedule.
摘要翻译：要解决的问题：根据每个用户的生活习惯差异或网络利用状况，通过单独设置ONU低功耗模式持续时间和特定时区的ONU功能停止范围以及每个用户来实现高效的功率降低效果。解决方案：OLT或ONU包括：业务聚合表数据库，用于为每个用户聚合用户网络接入流量; 每用户流量统计数据库，用于存储针对特定时区和每个用户的流量统计; 数据库，用于存储基于每个用户流量统计数据库生成的ONU低功耗模式持续时间设置调度; 以及用于存储ONU功能停止范围设置时间表的数据库。

4. 发明专利

JPH11163820A MULTIPLEXING TRANSMITTER, POINTER PROCESSOR, MULTIPLEXED TRANSMISSION NETWORK AND CONFIGURATION METHOD OF MULTIPLEXING TRANSMITTER 失效
公开(公告)号：JPH11163820A
公开(公告)日：1999-06-18
申请号：JP32754197
申请日：1997-11-28
申请人： HITACHI LTD
发明人： OHIRA MASATERU , NOGUCHI MASAZUMI , KIMURA MITSUNOBU , MORI TAKASHI , OBAYASHI MASATAKE
IPC分类号： H04J3/00 , H04J3/14
摘要： PROBLEM TO BE SOLVED: To prevent the change of supervisory maintenance operationability which is accompanied with the configuration change of a transmission network by providing a means which selects prescribed maintenance information from plural maintenance information which are included in a received multiplexing signal and passes it by inserting it into an overhead byte of a sending side multiplexing signal. SOLUTION: This device consists of low speed signal transmitting/receiving units 10-1 to 10-M which input and output M sets of low speed multiplexing signals and process an overhead and a main signal, one set of a high speed signal transmitting/ receiving unit 11 which inputs and outputs a high speed multiplexing signal and processes the overhead and the main signal, a main signal multiple separation converting part 100 which performs multiple separation conversion of the main signal of the low speed multiplexing signal and the main signal of the high speed multiplexing signal and a controlling part 400 which controls the whole. Thus, it is possible to use the overhead between the desired transmitters by making the overhead that is preliminarily defined in a transmission system to be used pass and process.

5. 发明专利

JP2003069497A Optical multiplex network system 审中-公开
标题翻译：光纤多网络系统
公开(公告)号：JP2003069497A
公开(公告)日：2003-03-07
申请号：JP2001258183
申请日：2001-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NOGUCHI MASAZUMI , KAWASAKI KAZUHIRO , KATAYAMA MASAAKI , TAKAYAMA YUJI , TARUKI RYOSUKE
IPC分类号： H04B10/03 , H04B10/032 , H04B10/07 , H04B10/27 , H04B10/291 , H04J3/00 , H04J14/00 , H04J14/02 , H04B10/02 , H04B10/20
摘要： PROBLEM TO BE SOLVED: To provide an optical multiplex network system that can realize redundancy configuration for transmission line on an optical network placed between optical transmitters terminating the optical fiber transmission line and facilitate change of the optical transmitters opposite to each other.
SOLUTION: The SONET/SDH optical transmitter being the optical transmitter having optical fiber transmission line interfaces for active and standby systems and performing electro/optic, photo/electric conversion for the signal and terminating the optical fiber transmission lines are configured to have the same transmission wavelength of the standby system transmitter as the transmission wavelength of the active system transmitter. The optical network comprises Add-Drop-Mux wavelength multiplexers not performing the electro/ optic, photo/electric conversion for the signal and wavelength multiplex switches SW and realizes the transmission lines between the SONET/SDH optical transmitters with the redundancy configuration.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种光纤复用网络系统，其可以实现放置在终端光纤传输线路的光发射机之间的光网络上的传输线路的冗余配置，并且促进彼此相反的光发射机的改变。解决方案：作为光发射机的SONET / SDH光发射机具有用于主动和待机系统的光纤传输线接口，并对信号执行电/光，光/电转换并终止光纤传输线，被配置为具有相同的传输待机系统发射机的波长作为有源系统发射机的传输波长。光网络包括不执行信号和波长多路复用开关SW的电/光，光/电转换的附加 - 多路复用波长多路复用器，并实现具有冗余配置的SONET / SDH光发射机之间的传输线。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式