Patents by Inventor Kenji Yasuhara
Kenji Yasuhara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8315517Abstract: An optical line monitoring apparatus, including: a group information recording portion which records group information about to which splitter respective terminators are connected; a normal information recording portion which records intensities of reflected lights from a plurality of terminators in a state in which a failure is not occurring in optical lines; a monitored information recording portion which records intensities of reflected lights from the plurality of terminators in failure monitoring time; an attenuation amount determination portion which determines a terminator the reflected light intensity of which is attenuated compared with the corresponding reflected light intensity in normal information; and a control portion which determines, if the intensities of the reflected lights of all the terminators connected to the same splitter are attenuated by the same value, that a failure has occurred between the test apparatus and the splitter to which all the terminators are connected.Type: GrantFiled: August 26, 2011Date of Patent: November 20, 2012Assignee: Fujikura, LtdInventors: Toshiaki Nakajima, Kenji Yasuhara
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Patent number: 8290363Abstract: An optical line monitoring apparatus, including: a group information recording portion which records group information about to which splitter respective terminators are connected; a normal information recording portion which records intensities of reflected lights from a plurality of terminators in a state in which a failure is not occurring in optical lines; a monitored information recording portion which records intensities of reflected lights from the plurality of terminators in failure monitoring time; an attenuation amount determination portion which determines a terminator the reflected light intensity of which is attenuated compared with the corresponding reflected light intensity in normal information; and a control portion which determines, if the intensities of the reflected lights of all the terminators connected to the same splitter are attenuated by the same value, that a failure has occurred between the test apparatus and the splitter to which all the terminators are connected.Type: GrantFiled: August 1, 2008Date of Patent: October 16, 2012Assignee: Fujikura Ltd.Inventors: Toshiaki Nakajima, Kenji Yasuhara
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Patent number: 8270828Abstract: An optical line monitoring apparatus, including: a group information recording portion which records group information about to which splitter respective terminators are connected; a normal information recording portion which records intensities of reflected lights from a plurality of terminators in a state in which a failure is not occurring in optical lines; a monitored information recording portion which records intensities of reflected lights from the plurality of terminators in failure monitoring time; an attenuation amount determination portion which determines a terminator the reflected light intensity of which is attenuated compared with the corresponding reflected light intensity in normal information; and a control portion which determines, if the intensities of the reflected lights of all the terminators connected to the same splitter are attenuated by the same value, that a failure has occurred between the test apparatus and the splitter to which all the terminators are connected.Type: GrantFiled: August 26, 2011Date of Patent: September 18, 2012Assignee: Fujikura Ltd.Inventors: Toshiaki Nakajima, Kenji Yasuhara
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Patent number: 8141778Abstract: An identification display device which is provided in a work unit in which a plurality of work locations are arranged in rows, and which displays for identifying a designated location selected from the work locations, the identification display device includes a database which stores address information of the respective work locations; light-display section which is provided respectively on each of the work locations, and which emits a visible light which contains the address information of the work location in which the light-display section is arranged; a photoreceptor which transmits a photoreception signal which contains at least the address information contained in the light from the light-display section, when the light is received; and a confirmation section which receives the photoreception signal from the photoreceptor, and determines whether or not the address information contained in the photoreception signal matches the address information of the designated location obtained from the database.Type: GrantFiled: September 1, 2009Date of Patent: March 27, 2012Assignee: Fujikura Ltd.Inventors: Yuji Yamada, Hiroya Ohnishi, Masaki Yamaguchi, Kenji Yasuhara, Norihiro Momotsu
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Publication number: 20110311218Abstract: An optical line monitoring apparatus, including: a group information recording portion which records group information about to which splitter respective terminators are connected; a normal information recording portion which records intensities of reflected lights from a plurality of terminators in a state in which a failure is not occurring in optical lines; a monitored information recording portion which records intensities of reflected lights from the plurality of terminators in failure monitoring time; an attenuation amount determination portion which determines a terminator the reflected light intensity of which is attenuated compared with the corresponding reflected light intensity in normal information; and a control portion which determines, if the intensities of the reflected lights of all the terminators connected to the same splitter are attenuated by the same value, that a failure has occurred between the test apparatus and the splitter to which all the terminators are connected.Type: ApplicationFiled: August 26, 2011Publication date: December 22, 2011Applicant: FUJIKURA LTD.Inventors: Toshiaki Nakajima, Kenji Yasuhara
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Publication number: 20110311220Abstract: An optical line monitoring apparatus, including: a group information recording portion which records group information about to which splitter respective terminators are connected; a normal information recording portion which records intensities of reflected lights from a plurality of terminators in a state in which a failure is not occurring in optical lines; a monitored information recording portion which records intensities of reflected lights from the plurality of terminators in failure monitoring time; an attenuation amount determination portion which determines a terminator the reflected light intensity of which is attenuated compared with the corresponding reflected light intensity in normal information; and a control portion which determines, if the intensities of the reflected lights of all the terminators connected to the same splitter are attenuated by the same value, that a failure has occurred between the test apparatus and the splitter to which all the terminators are connected.Type: ApplicationFiled: August 26, 2011Publication date: December 22, 2011Applicant: FUJIKURA LTD.Inventors: Toshiaki Nakajima, Kenji Yasuhara
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Patent number: 7738787Abstract: An optical transmission line monitoring device is provided including a device which calculates a management amount based on an optical intensity of returning light, a reference data storage device which stores reference management amounts beforehand, a detecting device which in response to the calculated management amount being of poorer quality than the reference management amount stored in the reference data storage device detects a distance, creates detection data based on the calculated management amount, and stores the created detection data in a detection data storage device, an alarm outputting device that creates alarm data based on the detection data created by the detecting device, and displays the created alarm data on a screen, an inputting device that inputs selection command data indicating that the alarm data displayed on the screen will not be output, and a removal data adding device that adds, to the detection data stored in the detection data storage device corresponding to the alarm data ofType: GrantFiled: July 18, 2007Date of Patent: June 15, 2010Assignee: Fujikura Ltd.Inventors: Toshiaki Nakajima, Kenji Yasuhara
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Publication number: 20100090003Abstract: An identification display device which is provided in a work unit in which a plurality of work locations are arranged in rows, and which displays for identifying a designated location selected from the work locations, the identification display device includes a database which stores address information of the respective work locations; light-display section which is provided respectively on each of the work locations, and which emits a visible light which contains the address information of the work location in which the light-display section is arranged; a photoreceptor which transmits a photoreception signal which contains at least the address information contained in the light from the light-display section, when the light is received; and a confirmation section which receives the photoreception signal from the photoreceptor, and determines whether or not the address information contained in the photoreception signal matches the address information of the designated location obtained from the database.Type: ApplicationFiled: September 1, 2009Publication date: April 15, 2010Applicant: Fujikura Ltd.Inventors: Yuji YAMADA, Hiroya OHNISHI, Masaki YAMAGUCHI, Kenji YASUHARA, Norihiro MOMOTSU
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Publication number: 20090190921Abstract: An optical line monitoring apparatus, including: a group information recording portion which records group information about to which splitter respective terminators are connected; a normal information recording portion which records intensities of reflected lights from a plurality of terminators in a state in which a failure is not occurring in optical lines; a monitored information recording portion which records intensities of reflected lights from the plurality of terminators in failure monitoring time; an attenuation amount determination portion which determines a terminator the reflected light intensity of which is attenuated compared with the corresponding reflected light intensity in normal information; and a control portion which determines, if the intensities of the reflected lights of all the terminators connected to the same splitter are attenuated by the same value, that a failure has occurred between the test apparatus and the splitter to which all the terminators are connected.Type: ApplicationFiled: August 1, 2008Publication date: July 30, 2009Applicant: FUJIKURA, LTD.Inventors: TOSHIAKI NAKAJIMA, Kenji Yasuhara
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Publication number: 20080085114Abstract: In an optical transmission line monitoring device, an input unit is manipulated by a user, and inputs selection command data indicating that alarm data displayed on a screen is selected an alarm data that will not be output. A exclusion data processing unit adds, to detection data stored in a detection data storage unit corresponding to the alarm data of the input selection command data, output removal data indicating that it is not a target for output. An alarm output unit displays the detection data that the output removal data was added to such that alarm data displayed on a screen that corresponds to the detection data can be distinguished from other alarm data.Type: ApplicationFiled: July 18, 2007Publication date: April 10, 2008Applicant: FUJIKURA LTD.Inventors: Toshiaki NAKAJIMA, Kenji YASUHARA