Patents by Inventor Yoji Okada
Yoji Okada 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: 10839674Abstract: A management system includes a plurality of sensors installed in a predetermined area, and a management device. The management device includes: an acquisition unit configured to acquire sensor information wirelessly transmitted from the plurality of sensors; an accumulation unit configured to accumulate the acquired sensor information; a determination unit configured to perform abnormality determination regarding the predetermined area by use of the sensor information; a notification unit configured to notify a content based on a result of the determination by the determination unit; and a display control unit capable of performing a control of temporally displaying a content regarding the predetermined area, on the basis of the sensor information acquired by the acquisition unit.Type: GrantFiled: July 3, 2017Date of Patent: November 17, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Sei Teki, Yoji Okada, Shigeru Tanaka
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Publication number: 20200035087Abstract: A management system includes a plurality of sensors installed in a predetermined area, and a management device. The management device includes: an acquisition unit configured to acquire sensor information wirelessly transmitted from the plurality of sensors; an accumulation unit configured to accumulate the acquired sensor information; a determination unit configured to perform abnormality determination regarding the predetermined area by use of the sensor information; a notification unit configured to notify a content based on a result of the determination by the determination unit; and a display control unit capable of performing a control Hof temporally displaying a content regarding the predetermined area, on the basis of the sensor information acquired by the acquisition unit.Type: ApplicationFiled: July 3, 2017Publication date: January 30, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Sei TEKI, Yoji OKADA, Shigeru TANAKA
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Patent number: 10425482Abstract: Provided is an information management device including: a communication information obtaining unit configured to obtain communication information about a communication state in an internal network inside a building; and an update determination unit configured to determine a start of updating process by an information updating unit, based on the communication information obtained by the communication information obtaining unit, wherein the information updating unit obtains information from an external network outside the building and performs the updating process for storing the obtained information as local information into a storage device which is accessible, not via the external network, by a terminal device connected to the internal network.Type: GrantFiled: November 14, 2014Date of Patent: September 24, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kenichi Murakami, Yoji Okada, Yoshizo Tanaka, Takashi Yamamoto, Hirotsugu Yamamoto, Kiyoshi Kobayashi, Kazuto Yano, Masayuki Ariyoshi, Tomohiro Miyasaka, Mariko Sekiguchi, Yafei Hou
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Publication number: 20160156716Abstract: Provided is an information management device including: a communication information obtaining unit configured to obtain communication information about a communication state in an internal network inside a building; and an update determination unit configured to determine a start of updating process by an information updating unit, based on the communication information obtained by the communication information obtaining unit, wherein the information updating unit obtains information from an external network outside the building and performs the updating process for storing the obtained information as local information into a storage device which is accessible, not via the external network, by a terminal device connected to the internal network.Type: ApplicationFiled: November 14, 2014Publication date: June 2, 2016Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kenichi MURAKAMI, Yoji OKADA, Yoshizo TANAKA, Takashi YAMAMOTO, Hirotsugu YAMAMOTO, Kiyoshi KOBAYASHI, Kazuto YANO, Masayuki ARIYOSHI, Tomohiro MIYASAKA, Mariko SEKIGUCHI, Yafei HOU
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Patent number: 9048973Abstract: A base station device performs switching of its transmission power distribution in accordance with a transmission power distribution switching timing of another base station device. The base station device includes a control unit 22 that controls transmission power distribution in the frequency domain, and a detection unit 23 that detects a switching timing at which another base station device switches transmission power distribution. The control unit 22 changes its transmission power distribution at a power distribution switching timing in the another base station device or a timing near the switching timing. Accordingly, inter-cell interference is prevented.Type: GrantFiled: January 27, 2011Date of Patent: June 2, 2015Assignee: SUMITOMO ELETRIC INDUSTRIES, LTD.Inventors: Takashi Yamamoto, Yoji Okada, Yoshizo Tanaka
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Patent number: 8929191Abstract: While a clock generated by a built-in clock generator is used as a reference signal for determining a carrier frequency of a transmit signal, carrier frequency synchronization is achieved between base stations. A base station device is configured to perform wireless communication with a terminal device. In the base station device, accuracy of a carrier frequency of an OFDM signal is affected by accuracy of a clock frequency generated by a built-in clock generator 18. The base station device receives an OFDM signal transmitted from another base station device while transmission to the terminal device is stopped, estimates a carrier frequency offset of the OFDM signal, and corrects a carrier frequency of an OFDM signal to be transmitted to the terminal device.Type: GrantFiled: June 12, 2009Date of Patent: January 6, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Yamamoto, Yoji Okada
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Publication number: 20130225192Abstract: New technical means for setting a position of a blank radio resource is provided. A base station device includes: a setting unit 24 that sets a blank radio resource in a usable radio resource; and an acquisition unit 26 that acquires information indicating a position of a blank radio resource in another base station device. The setting unit 24 adjusts the position of the blank radio resource, based on the information indicating the position of the blank radio resource in the another base station device.Type: ApplicationFiled: November 11, 2011Publication date: August 29, 2013Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takashi Yamamoto, Yoji Okada, Yoshizo Tanaka, Kenichi Murakami
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Publication number: 20130017859Abstract: A base station device performs switching of its transmission power distribution in accordance with a transmission power distribution switching timing of another base station device. The base station device includes a control unit 22 that controls transmission power distribution in the frequency domain, and a detection unit 23 that detects a switching timing at which another base station device switches transmission power distribution. The control unit 22 changes its transmission power distribution at a power distribution switching timing in the another base station device or a timing near the switching timing. Accordingly, inter-cell interference is prevented.Type: ApplicationFiled: January 27, 2011Publication date: January 17, 2013Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takashi Yamamoto, Yoji Okada, Yoshizo Tanaka
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Publication number: 20120282889Abstract: A base station device is provided with a control information obtaining unit (23) that obtains allocation information indicating an allocation status, for each resource block, of a radio resource allocated to another terminal device that communicates with another base station device, and an output control unit (20) that controls a transmission power of a downlink signal of the base station device and/or a transmission power of an uplink signal of a terminal device connected to the base station device, for each resource block, based on the allocation information. Therefore, the base station device is capable of suppressing interference more effectively depending on various situations.Type: ApplicationFiled: January 6, 2011Publication date: November 8, 2012Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTDInventors: Yoshizo Tanaka, Takashi Yamamoto, Yoji Okada, Eiji Mochida
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Patent number: 8204465Abstract: To reduce the affections of noises having greater instantaneous powers than received signals. A receiver of block transmission scheme, in which signal blocks from a transmitting end are received and equalization is performed for each of the received signal blocks, comprises a local noise detecting unit detecting a local noise locally existing in a received signal block and having a greater amplitude than the signals; a local noise eliminating unit generating a local-noise-eliminated received signal block in which the signals in the range where the local noise is existent within the received signal block have been eliminated together with the local noise; and an equalizer that performs an equalization based on the local-noise-eliminated received signal block.Type: GrantFiled: April 27, 2007Date of Patent: June 19, 2012Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hideaki Sakai, Kazunori Hayashi, Yoji Okada, Tadashi Araki
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Publication number: 20110170527Abstract: While a clock generated by a built-in clock generator is used as a reference signal for determining a carrier frequency of a transmit signal, carrier frequency synchronization is achieved between base stations. A base station device is configured to perform wireless communication with a terminal device. In the base station device, accuracy of a carrier frequency of an OFDM signal is affected by accuracy of a clock frequency generated by a built-in clock generator 18. The base station device receives an OFDM signal transmitted from another base station device while transmission to the terminal device is stopped, estimates a carrier frequency offset of the OFDM signal, and corrects a carrier frequency of an OFDM signal to be transmitted to the terminal device.Type: ApplicationFiled: June 12, 2009Publication date: July 14, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIESInventors: Takashi Yamamoto, Yoji Okada
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Patent number: 7953168Abstract: To reduce the influence of inter-block interference even when the order number of the channel (physically corresponding to the impulse response length of the channel) is larger than the CP length. A receiver 20 for a transmission system using a block including a plurality of symbols, comprises a transfer function estimating part 21 which estimates a transfer function of a channel, and an inter-block interference component generating part 24 which generates a replica of an inter-block interference component from a previous block to a current block in accordance with the transfer function h estimated in the transfer function estimating part 21 and a received signal s(n?1) of the previous block, wherein the inter-block interference component of a received signal is reduced by using the replica of the inter-block interference component.Type: GrantFiled: September 15, 2006Date of Patent: May 31, 2011Assignees: Sumitomo Electric Industries, Ltd., Kyoto UniversityInventors: Hideaki Sakai, Kazunori Hayashi, Yoji Okada
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Publication number: 20090268825Abstract: To reduce the influence of inter-block interference even when the order number of the channel (physically corresponding to the impulse response length of the channel) is larger than the CP length. A receiver 20 for a transmission system using a block including a plurality of symbols, comprises a transfer function estimating part 21 which estimates a transfer function of a channel, and an inter-block interference component generating part 24 which generates a replica of an inter-block interference component from a previous block to a current block in accordance with the transfer function h estimated in the transfer function estimating part 21 and a received signal s(n?1) of the previous block, wherein the inter-block interference component of a received signal is reduced by using the replica of the inter-block interference component.Type: ApplicationFiled: September 15, 2006Publication date: October 29, 2009Inventors: Hideaki Sakai, Kazunori Hayashi, Yoji Okada
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Publication number: 20090104876Abstract: To reduce the affections of noises having greater instantaneous powers than received signals. A receiver of block transmission scheme, in which signal blocks from a transmitting end are received and equalization is performed for each of the received signal blocks, comprises a local noise detecting unit detecting a local noise locally existing in a received signal block and having a greater amplitude than the signals; a local noise eliminating unit generating a local-noise-eliminated received signal block in which the signals in the range where the local noise is existent within the received signal block have been eliminated together with the local noise; and an equalizer that performs an equalization based on the local-noise-eliminated received signal block.Type: ApplicationFiled: April 27, 2007Publication date: April 23, 2009Inventors: Hideaki Sakai, Kazunori Hayashi, Yoji Okada, Tadashi Araki
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Patent number: 4490663Abstract: A device for driving a stepping motor for use in a vehicle is disclosed. The device comprises a plurality of phase coils, a switching means connected to the phase coils, a pulse distributor circuit connected to the switching means for generating control signals thereby controlling the ON or OFF state of the switching means, a connection means for connecting the phase coils to a power supply source, and a current sustaining means connected between the connection means and the phase coils in common therewith.Type: GrantFiled: June 28, 1982Date of Patent: December 25, 1984Assignee: Mikuni Kogyo Kabushiki KaishaInventors: Shuichi Kamiyama, Yoji Okada