Patents by Inventor Hiroshi Ogiwara
Hiroshi Ogiwara 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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Publication number: 20210071405Abstract: Provided is a blower installed at a manhole opening, with which it is possible to facilitate an entry or an exit of a worker or an import or an export of an article. The present invention provides a ventilation system comprising a frame and a single or a plurality of airflow generation means arranged at the frame, a direction of an airflow is adjusted so that the airflow generated from the airflow generation means flows along with a virtual axis penetrating a virtual surface which the frame is regarded as to periphery, and the airflow flows while swallowing up the surrounding air of the virtual axis, and an air volume more than two times of total fluid volume of the airflow is generated.Type: ApplicationFiled: November 20, 2020Publication date: March 11, 2021Applicants: TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION, EBISMARINE CORPORATION, EBISTRADE, INC.Inventors: Yukitoshi IWASA, Hiroshi OGIWARA, Takaaki ODATE, Hikaru NAKAMURA, Ryoji TERAI
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Patent number: 10374717Abstract: A signal processing device includes an electric connector to which a transmitting and receiving device, which transmits and receives a signal, is connectable; a first processor configured to compensate for, according to a setting value, deterioration of the signal input and output between the signal processing device and the transmitting and receiving device via the electric connector; a memory configured to store first characteristic data indicating a transmission characteristic of the signal in the electric connector; and a second processor configured to acquire, from the transmitting and receiving device, second characteristic data for indicating a transmission characteristic of the signal in the transmitting and receiving device and set the setting value in the first processor based on the first characteristic data and the second characteristic data.Type: GrantFiled: June 22, 2018Date of Patent: August 6, 2019Assignee: FUJITSU LIMITEDInventors: Tomohiro Kaneoka, Hiroshi Ogiwara
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Publication number: 20180375582Abstract: A signal processing device includes an electric connector to which a transmitting and receiving device, which transmits and receives a signal, is connectable; a first processor configured to compensate for, according to a setting value, deterioration of the signal input and output between the signal processing device and the transmitting and receiving device via the electric connector; a memory configured to store first characteristic data indicating a transmission characteristic of the signal in the electric connector; and a second processor configured to acquire, from the transmitting and receiving device, second characteristic data for indicating a transmission characteristic of the signal in the transmitting and receiving device and set the setting value in the first processor based on the first characteristic data and the second characteristic data.Type: ApplicationFiled: June 22, 2018Publication date: December 27, 2018Applicant: FUJITSU LIMITEDInventors: Tomohiro Kaneoka, Hiroshi Ogiwara
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Patent number: 9989786Abstract: An optical transmission device includes an optical modulator and a processor. The optical modulator optically modulates an optical signal with a driving signal to output a modulated optical signal. The processor performs ABC on a bias of the optical modulator, using the modulated optical signal, so as to cause the bias to converge to an optimum point. The processor starts the ABC using a modulated optical signal optically modulated with a QPSK signal at start-up timing, acquires an optimum value that is a bias value when the bias converges to the optimum point, and stops the ABC. After the ABC is stopped, the processor sets the acquired optimum value as an initial value, and restarts the ABC using a modulated optical signal optically modulated with an N-QPSK signal.Type: GrantFiled: April 3, 2017Date of Patent: June 5, 2018Assignee: FUJITSU LIMITEDInventors: Tomohiro Kaneoka, Hiroshi Ogiwara, Yuichi Akiyama
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Publication number: 20180087261Abstract: Provided is a blower installed at a manhole opening, with which it is possible to facilitate an entry or an exit of a worker or an import or an export of an article. The present invention provides a ventilation system comprising a frame and a single or a plurality of airflow generation means arranged at the frame, a direction of an airflow is adjusted so that the airflow generated from the airflow generation means flows along with a virtual axis penetrating a virtual surface which the frame is regarded as to periphery, and the airflow flows while swallowing up the surrounding air of the virtual axis, and an air volume more than two times of total fluid volume of the airflow is generated.Type: ApplicationFiled: December 8, 2015Publication date: March 29, 2018Applicants: TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION, EBISMARINE CORPORATION, EBISTRADE, INC.Inventors: Yukitoshi IWASA, Hiroshi OGIWARA, Takaaki ODATE, Hikaru NAKAMURA, Ryoji TERAI
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Publication number: 20170293165Abstract: An optical transmission device includes an optical modulator and a processor. The optical modulator optically modulates an optical signal with a driving signal to output a modulated optical signal. The processor performs ABC on a bias of the optical modulator, using the modulated optical signal, so as to cause the bias to converge to an optimum point. The processor starts the ABC using a modulated optical signal optically modulated with a QPSK signal at start-up timing, acquires an optimum value that is a bias value when the bias converges to the optimum point, and stops the ABC. After the ABC is stopped, the processor sets the acquired optimum value as an initial value, and restarts the ABC using a modulated optical signal optically modulated with an N-QPSK signal.Type: ApplicationFiled: April 3, 2017Publication date: October 12, 2017Applicant: FUJITSU LIMITEDInventors: Tomohiro Kaneoka, Hiroshi Ogiwara, YUICHI AKIYAMA
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Publication number: 20170187465Abstract: An optical transmitter includes: a modulator; and a controller configured to control an extinction state, brought about by the modulator, through I control and Q control in which an offset is added to ? bias and ? control which is performed in a state in which the offset is added to I bias and Q bias.Type: ApplicationFiled: December 19, 2016Publication date: June 29, 2017Applicant: FUJITSU LIMITEDInventors: Tomohiro Kaneoka, Hiroshi Ogiwara
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Patent number: 9525494Abstract: An optical receiver includes: a frontend circuit configured to generate a baseband signal representing a received optical signal by using local oscillator light; a frequency offset estimator configured to estimate a frequency offset of the baseband signal; a frequency offset corrector configured to correct the frequency offset of the baseband signal according to an estimation result by the frequency offset estimator; a phase recovery configured to recover a modulated phase from the baseband signal for which the frequency offset is corrected; a data recovery configured to recover transmission data according to the modulated phase recovered by the phase recovery; and a controller configured to control an operation of the frequency offset estimator according to a phase error of the baseband signal for which the frequency offset is corrected.Type: GrantFiled: February 21, 2014Date of Patent: December 20, 2016Assignee: FUJITSU LIMITEDInventor: Hiroshi Ogiwara
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Patent number: 9191145Abstract: A communications apparatus includes a transmitter that transmits signal light that is wavelength division multiplexed with other signal light and that is to be transmitted to an opposing apparatus, and a processor that is operative to change a frequency of the signal light to be transmitted by the transmitter based on detection results at the opposing apparatus and concerning variation in the frequency of the transmitted signal light.Type: GrantFiled: October 25, 2011Date of Patent: November 17, 2015Assignees: FUJITSU LIMITED, NTT ELECTRONICS CORPORATIONInventors: Hiroshi Ogiwara, Tsutomu Aiba, Shigeru Ono, Kouichi Ogihara
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Publication number: 20140286650Abstract: An optical receiver includes: a frontend circuit configured to generate a baseband signal representing a received optical signal by using local oscillator light; a frequency offset estimator configured to estimate a frequency offset of the baseband signal; a frequency offset corrector configured to correct the frequency offset of the baseband signal according to an estimation result by the frequency offset estimator; a phase recovery configured to recover a modulated phase from the baseband signal for which the frequency offset is corrected; a data recovery configured to recover transmission data according to the modulated phase recovered by the phase recovery; and a controller configured to control an operation of the frequency offset estimator according to a phase error of the baseband signal for which the frequency offset is corrected.Type: ApplicationFiled: February 21, 2014Publication date: September 25, 2014Applicant: FUJITSU LIMITEDInventor: Hiroshi Ogiwara
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Patent number: 8442404Abstract: An optical dispersion compensator including a first optical device in which light inputted from a first port is outputted from a second port and light inputted from the second port is outputted from a third port, an optical filter type dispersion compensation device that receives light from the second port of the first optical device and compensates wavelength dispersion with respect to the received light, and a second optical device that includes a fourth port to which light is inputted from the optical filter type dispersion compensation device, and in which the light inputted from the fourth port is outputted from a fifth port and light inputted from a sixth port is outputted from the fourth port.Type: GrantFiled: March 24, 2010Date of Patent: May 14, 2013Assignee: Fujitsu LimitedInventor: Hiroshi Ogiwara
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Patent number: 8406973Abstract: The present invention provides a driving force control unit for a vehicle having an accelerator opening degree detecting unit for detecting accelerator opening degree, a driving condition detecting unit for detecting engine driving condition, a driving force setting unit for setting a driving force indication value according to a plurality of different driving force characteristics based on the accelerator opening degree and the engine driving condition, a selector for selecting a driving force characteristic from the plural of different driving force characteristics by manipulation. The driving force setting unit setting the driving force indication value according to the selected driving force characteristic.Type: GrantFiled: April 6, 2007Date of Patent: March 26, 2013Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Hiroshi Oishi, Toyohide Sunaguchi, Yoshio Iwakami, Munenori Homma, Atsushi Atake, Kouji Kaneda, Tatsuru Fukuda, Minoru Yuki, Masayuki Ushiki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura
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Publication number: 20120106969Abstract: A communications apparatus includes a transmitter that transmits signal light that is wavelength division multiplexed with other signal light and that is to be transmitted to an opposing apparatus, and a processor that is operative to change a frequency of the signal light to be transmitted by the transmitter based on detection results at the opposing apparatus and concerning variation in the frequency of the transmitted signal light.Type: ApplicationFiled: October 25, 2011Publication date: May 3, 2012Applicants: NTT Electronics Corporation, FUJITSU LIMITEDInventors: Hiroshi Ogiwara, Tsutomu Aiba, Shigeru Ono, Kouichi Ogihara
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Patent number: 8108084Abstract: The present invention provides a vehicle display device which allows a driver to instantaneously grasp driving force information. A meter_ECU displays a driving force display image which displays driving force information of a vehicle on an MID, displays an acceleration-torque line (driving force characteristic line) L corresponding to the currently selected mode M and, at the same time, changes a power level which is indicated in a power display region P set within the acceleration-torque line L interlockingly with an accelerator operation of a driver. Due to such a constitution, the vehicle display device allows the driver to instantaneously grasp the driving force information.Type: GrantFiled: April 6, 2007Date of Patent: January 31, 2012Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Hiroshi Oishi, Toyohide Sunaguchi, Yoshio Iwakami, Munenori Homma, Atsushi Atake, Kouji Kaneda, Tatsuru Fukuda, Minoru Yuki, Masayuki Ushiki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura
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Publication number: 20100247110Abstract: An optical dispersion compensator including a first optical device in which light inputted from a first port is outputted from a second port and light inputted from the second port is outputted from a third port, an optical filter type dispersion compensation device that receives light from the second port of the first optical device and compensates wavelength dispersion with respect to the received light, and a second optical device that includes a fourth port to which light is inputted from the optical filter type dispersion compensation device, and in which the light inputted from the fourth port is outputted from a fifth port and light inputted from a sixth port is outputted from the fourth port.Type: ApplicationFiled: March 24, 2010Publication date: September 30, 2010Applicant: Fujitsu LimitedInventor: Hiroshi OGIWARA
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Patent number: 7772970Abstract: The present invention provides a vehicle display device which can display fuel consumption information of a vehicle in a useful and optimum mode for a driver. A meter_EUC calculates an instantaneous fuel consumption of a vehicle based on a mileage and a fuel injection quantity within a set time, calculates an average fuel consumption of the vehicle based on respective cumulative values of the mileage and the fuel injection quantity repeatedly calculated for every set time, and displays the deviation of the instantaneous fuel consumption with respect to the average fuel consumption as fuel consumption information on a fuel consumption meter. The display on the fuel consumption meter is performed by swinging a pointer with respect to a neutral position.Type: GrantFiled: April 5, 2007Date of Patent: August 10, 2010Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Hiroshi Oishi, Toyohide Sunaguchi, Yoshio Iwakami, Munenori Homma, Kouji Kaneda, Atsushi Atake, Tatsuru Fukuda, Masayuki Ushiki, Minoru Yuki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura
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Patent number: 7747374Abstract: The driving force control unit for a vehicle comprises a plurality of control modes for controlling a driving force, each of control modes having each driving force characteristic, a vehicle driving condition detecting unit for detecting a vehicle driving condition, a selector for selecting one control mode from the control modes, a temporary selector for changing the current mode to other mode, and a driving force indication value setting unit for setting a driving force indication value according to the vehicle driving condition and the driving force characteristic corresponding to the selected mode by the selector or the temporary selector.Type: GrantFiled: April 6, 2007Date of Patent: June 29, 2010Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Hiroshi Oishi, Toyohide Sunaguchi, Yoshio Iwakami, Munenori Homma, Atsushi Atake, Kouji Kaneda, Tatsuru Fukuda, Minoru Yuki, Masayuki Ushiki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura
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Patent number: 7742865Abstract: The driving force control unit comprises a plurality of control modes for controlling a driving force, each of control modes having each driving force characteristic; a vehicle driving condition detecting unit for detecting a vehicle driving condition; a selector for selecting one control mode from the plurality of control modes; a driving force setting unit for setting a driving force indication value according to the driving force characteristic selected by the selector based on the vehicle driving condition; and a shift lever position detector for detecting a shift lever position of a transmission. The control mode includes a reverse control mode having a reverse driving force characteristic suitable for traveling the vehicle in reverse direction. The driving force setting unit changes the control mode to the reverse control mode when the shift lever is detected in a position of a reverse range, and sets the driving force indication value according to the reverse driving force characteristic.Type: GrantFiled: April 6, 2007Date of Patent: June 22, 2010Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Hiroshi Oishi, Toyohide Sunaguchi, Yoshio Iwakami, Munenori Homma, Atsushi Atake, Kouji Kaneda, Tatsuru Fukuda, Minoru Yuki, Masayuki Ushiki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura
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Patent number: 7546197Abstract: A driving force control device can set driving force characteristics which conform to tastes of drivers using one vehicle thus giving the easy-to-drive feeling to the drivers. An E/G13ECU possesses three modes 1 to 3 as control modes and selects one mode from these modes based on a manipulation input using a mode selection switch. Further, any one of the mode out of these modes 1 to 3 is preset in the E/G13ECU as a temporary changeover mode, and the E/G13ECU changes over a mode selected by the mode selection switch and the preset temporary changeover mode alternatively by the temporary changeover switch.Type: GrantFiled: April 6, 2007Date of Patent: June 9, 2009Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Atsushi Atake, Kouji Kaneda, Tatsuru Fukuda, Minoru Yuki, Masayuki Ushiki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura
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Patent number: 7424361Abstract: The driving force control unit for vehicle comprises a driving condition detecting unit for detecting the vehicle driving condition, a selector for selecting one of driving modes by manipulation, the driving modes including a first mode having a driving force characteristic suitable for normal driving and a second mode having a suppressed driving force, and driving force setting unit for setting a driving force indication value based on the selected mode and the vehicle driving conditions. The selector being formed by a multiple switch having a push switch which turns to ON state when a pressing force direction manipulation is applied, and other switch which turns to ON state when manipulation other than the pressing force direction is applied, the second mode is selected by the ON manipulation of the push switch.Type: GrantFiled: April 6, 2007Date of Patent: September 9, 2008Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Masuda, Kenichi Yamamoto, Kenji Hijikata, Satoshi Satomura, Hiroshi Oishi, Toyohide Sunaguchi, Yoshio Iwakami, Munenori Homma, Atsushi Atake, Kouji Kaneda, Tatsuru Fukuda, Minoru Yuki, Masayuki Ushiki, Tsuyoshi Kobayashi, Masahito Motoi, Naoki Shibata, Hiroshi Ogiwara, Katsumasa Igarashi, Junzo Shinozuka, Akihisa Nakamura