Patents by Inventor Daisuke Goto
Daisuke Goto 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: 20250233775Abstract: A wireless communication method according to one embodiment is a method, wherein wireless communication is established between at least one mobile transceiver station provided with a plurality of antennas and a base station provided with a plurality of antennas, the method including: estimating channel information for each of one or more channels based on location information for each of the antennas that transmit and receive radio waves; predicting an external factor affecting each channel for which channel information is estimated; calculating a channel capacity for each channel for which channel information is estimated based on the predicted external factor; determining a channel combination that maximizes the total channel capacity of wireless communication established between the at least one transceiver station and the base station based on each calculated channel capacity; and controlling an orientation of each antenna for transmitting and receiving radio waves based on the determined combination.Type: ApplicationFiled: October 4, 2021Publication date: July 17, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke GOTO, Fumihiro YAMASHITA, Munehiro MATSUI, Kiyohiko ITOKAWA, Hisayoshi KANO, Masaki SHIMA
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Wireless communication system, relay device, communication device, and wireless communication method
Patent number: 12355508Abstract: A first offset compensator configured to compensate for frequency offsets occurring during communications between a plurality of communication devices and a relay device, wherein when the first offset compensator is provided on the relay device, the first offset compensator gives a statistical frequency offset obtained from a statistic of a plurality of frequency offsets occurring during communications between respective ones of the plurality of communication devices and the relay device to a receiver configured to receive wireless signals transmitted from respective ones of the plurality of communication devices, and when the first offset compensator is provided on each of the plurality of communication devices, the first offset compensator gives a frequency offset occurring during communications between the communication device provided with the first offset compensator and the relay device to a transmitter configured to transmit wireless signals to the relay device.Type: GrantFiled: June 5, 2020Date of Patent: July 8, 2025Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke Goto, Kiyohiko Itokawa, Yasuyoshi Kojima, Fumihiro Yamashita, Yosuke Fujino, Kento Yoshizawa -
Publication number: 20250178618Abstract: A left front electric brake mechanism provides a braking force to a left front wheel of a vehicle. A right front electric brake mechanism provides a braking force to a right front wheel of the vehicle. A left rear electric brake mechanism provides a braking force to a left rear wheel of the vehicle. A right rear electric brake mechanism provides a braking force to a right rear wheel of the vehicle. An ECU controls the electric brake mechanisms. When a first braking force provided to a first wheel (for example, the left front wheel) cannot be controlled due to a failure in a first frictional braking apparatus (for example, the left front electric brake mechanism), the ECU outputs a braking instruction for causing a second frictional braking apparatus to generate a second braking force according to magnitude of the first braking force.Type: ApplicationFiled: March 10, 2023Publication date: June 5, 2025Inventors: Koki TAKIMOTO, Daisuke GOTO
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Patent number: 12316418Abstract: A transceiver includes: a plurality of antennas that performs communication with one or more first communication apparatuses serving as reference at the time of forming a communication area and a second communication apparatus located near the one or more first communication apparatuses; a channel estimation unit configured to perform channel estimation for each of the one or more first communication apparatuses based on a known reference signal transmitted from the one or more first communication apparatuses; and an antenna control unit configured to control the plurality of antennas using an estimation value obtained by the channel estimation to form a beam having directivity in a direction in which the one or more first communication apparatuses are located.Type: GrantFiled: December 24, 2020Date of Patent: May 27, 2025Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke Goto, Kiyohiko Itokawa, Yasuyoshi Kojima, Kazumitsu Sakamoto
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Publication number: 20250150123Abstract: The transmitting station or the receiving station estimates channel information. All combinations of sub-array configurations in accordance with the number of transmitting antennas, the number of receiving antennas, and the number of transmission signals are derived. For the all combinations, precoding matrices which can be combined in-phase with the selected receiving antennas are derived. The channel capacity for the all combinations from the channel information and the precoding matrix is calculated. The optimal precoding matrix which maximizes channel capacity is selected. The transmission-side control information is determined from the optimal precoding matrix. The transmitting station switches the output destination of a single signal or a plurality of signals on the basis of the transmission-side control information and forms an arbitrary sub-array corresponding to each signal. The sub-array performs in-phase combining using phase control for the desired receiving antenna.Type: ApplicationFiled: February 17, 2022Publication date: May 8, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Koyo TATEGAMI, Daisuke GOTO, Fumihiro YAMASHITA, Kiyohiko ITOKAWA
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Publication number: 20250112693Abstract: A capacity estimation unit estimates a channel capacity related to wireless communication between a communication device and a relay device. A scheme determination unit determines a transmission scheme of the data from the communication device to the relay device to be a scheme in which transmission efficiency is lower and transmission quality is higher as the channel capacity is larger, or to be a scheme in which the transmission quality is lower and the transmission efficiency is higher as the channel capacity is smaller.Type: ApplicationFiled: January 18, 2022Publication date: April 3, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyoshi KOJIMA, Daisuke GOTO, Kiyohiko ITOKAWA, Kazumitsu SAKAMOTO, Tomoya KAGEYAMA
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Publication number: 20250106073Abstract: Each transmitting apparatus transmits the same radio signals a plurality of times. A communication apparatus includes a plurality of antennas, a signal storage unit, a reading unit, an equalization unit, and a demodulation unit. The plurality of antennas receives radio signals transmitted from a plurality of the transmitting apparatuses. The signal storage unit stores reception signals received by each of the plurality of antennas. The reading unit reads, from the signal storage unit, reception signals including radio signals transmitted from a demodulation processing target transmitting apparatus, the reception signals being received by each of the plurality of antennas at different times. The equalization unit equalizes the plurality of reception signals read by the reading unit. The demodulation unit demodulates the equalized reception signals.Type: ApplicationFiled: January 19, 2022Publication date: March 27, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke GOTO, Kiyohiko ITOKAWA, Yasuyoshi KOJIMA, Kazumitsu SAKAMOTO, Tomoya KAGEYAMA
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Publication number: 20250105916Abstract: An acquisition unit acquires environment information indicating an installation environment of a communication apparatus. A scheme specifying unit specifies a transmission scheme of data on the basis of relational data indicating a relationship between the environment information and the transmission scheme and the acquired environment information. A transmission unit transmits the data to a relay device on the basis of the specified transmission scheme.Type: ApplicationFiled: January 19, 2022Publication date: March 27, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyoshi KOJIMA, Daisuke GOTO, Kiyohiko ITOKAWA, Kazumitsu SAKAMOTO, Tomoya KAGEYAMA
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Publication number: 20250106734Abstract: A second communication device transmits notification information related to a communication status between a transmission device and a first communication device to the transmission device. The transmission device determines a transmission method of data to the first communication device on the basis of the notification information received from the second communication device, and transmits the data to the first communication device by the determined transmission method.Type: ApplicationFiled: January 18, 2022Publication date: March 27, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyoshi KOJIMA, Daisuke GOTO, Kiyohiko ITOKAWA, Kazumitsu SAKAMOTO, Tomoya KAGEYAMA
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Patent number: 12259162Abstract: A processing liquid temperature control apparatus includes a block body with an integral structure made of a silicon carbide sintered body, the block body having a flow path through which a semiconductor processing liquid flows, and a temperature adjustment portion provided at the block body to adjust a temperature of the semiconductor processing liquid flowing through the flow path. Accordingly, it is possible to reduce the number of parts and achieve compactness and cost reduction. In addition, it is possible to enhance heat conduction between the processing liquid and the temperature adjustment portion, and improve heat exchange efficiency.Type: GrantFiled: February 18, 2022Date of Patent: March 25, 2025Assignee: KELK LTD.Inventors: Daisuke Goto, Atsushi Kobayashi
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Patent number: 12261676Abstract: An acquisition unit acquires a plurality of signals received by a plurality of antennas included in a wireless communication device that moves in a predetermined orbit above a celestial body. A parameter determination unit determines a synthesis parameter of the plurality of signals according to the position of a transmission terminal provided on the celestial body, the orbit, and the reception time of the plurality of signals. A synthesis unit synthesizes a transmission signal of the transmission terminal according to the plurality of signals and the synthesis parameter.Type: GrantFiled: December 25, 2020Date of Patent: March 25, 2025Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyoshi Kojima, Kiyohiko Itokawa, Daisuke Goto, Kazumitsu Sakamoto
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Publication number: 20250097944Abstract: A wireless communication system includes a transmission apparatus and a communication apparatus that moves. Further, the wireless communication system includes a statistics calculation unit, an information generation unit, and a notification unit. The statistics calculation unit acquires a transmission condition used for a first radio signal transmitted from the transmission apparatus in an area and normally received by a reception unit of the communication apparatus, and generates statistical information of the acquired transmission condition. The information generation unit extracts a transmission condition having a high probability that a radio signal is normally received on the basis of the statistical information, and generates transmission control information indicating the extracted transmission condition. The notification unit notifies the transmission apparatus in the area of the transmission control information.Type: ApplicationFiled: January 19, 2022Publication date: March 20, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke GOTO, Fumihiro YAMASHITA, Kiyohiko ITOKAWA, Yasuyoshi KOJIMA, Tomoya KAGEYAMA, Kazumitsu SAKAMOTO, Takeshi ONIZAWA
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Publication number: 20250097816Abstract: A wireless communication system includes a first communication apparatus that moves, a second communication apparatus that moves, and a reception apparatus. A first control unit of the first communication apparatus, when an own apparatus can communicate with any of the reception apparatuses, transmits transmission data acquired by the own apparatus from a first communication unit to the reception apparatus, and, when the own apparatus cannot communicate with any of the reception apparatuses, transmits the transmission data from a second communication unit to the second communication apparatus capable of communicating with the own apparatus. A second control unit of the second communication apparatus transmits the transmission data received by a third communication unit from the first communication apparatus from a fourth communication unit to a reception apparatus capable of communicating with the own apparatus.Type: ApplicationFiled: January 19, 2022Publication date: March 20, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke GOTO, Fumihiro YAMASHITA, Kiyohiko ITOKAWA, Yasuyoshi KOJIMA, Takeshi ONIZAWA, Kazumitsu SAKAMOTO, Tomoya KAGEYAMA
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Publication number: 20250096887Abstract: There is provided a wireless communication device in a wireless communication system including one or more communication devices installed on the ground and a moving wireless communication device, the wireless communication device including: an activation signal generation unit that generates an activation signal for activating the one or more communication devices; a distribution unit that distributes the activation signal generated by the activation signal generation unit; one or more frequency change application units that apply a frequency change to the activation signal distributed by the distribution unit; and a transmission unit that transmits an activation signal to which a frequency change is applied to the one or more frequency change application units.Type: ApplicationFiled: January 20, 2022Publication date: March 20, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kazumitsu SAKAMOTO, Tomoya KAGEYAMA, Yosuke FUJINO, Daisuke GOTO, Yasuyoshi KOJIMA, Kiyohiko ITOKAWA
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Publication number: 20250096913Abstract: In a wireless communication system including a first communication device, one or more second communication devices disposed around the first communication device, and a relay device that moves, the second communication device includes a second reception unit that attempts to receive a radio wave in a predetermined band and measures reception strength, and a second transmission unit that transmits, to the first communication device, reception result information indicating a peripheral radio wave condition based on the reception strength measured by the second reception unit, and the first communication device includes a first reception unit that attempts to receive a radio wave in the predetermined band and measures reception strength, a determination unit that determines a band to be used for transmission of data to the relay device on a basis of a peripheral radio wave condition based on the reception strength measured by the first reception unit and the peripheral radio wave condition based on the receptioType: ApplicationFiled: January 14, 2022Publication date: March 20, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyoshi KOJIMA, Daisuke GOTO, Kiyohiko ITOKAWA, Kazumitsu SAKAMOTO, Tomoya KAGEYAMA
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Patent number: 12253422Abstract: A state estimation system includes a thermal load detection unit that detects a thermal load of a device as an object, and an estimation unit that estimates a state of the device on the basis of the thermal load of the device detected by the thermal load detection unit.Type: GrantFiled: June 4, 2020Date of Patent: March 18, 2025Assignee: KELK Ltd.Inventors: Daisuke Goto, Takahiro Murase
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Publication number: 20250088262Abstract: In a wireless communication system including a communication device and a plurality of relay devices that moves, the relay device includes: a signal reception unit that receives a signal transmitted from the communication device; a reception status information generation unit that generates reception status information indicating a reception status of the signal by the signal reception unit; a reception status information transmission unit that transmits the reception status information generated by the reception status information generation unit to another relay device; a reception status information reception unit that receives reception status information transmitted from another relay device; a calculation unit that calculates a communication parameter value suitable for retransmission of a signal from the communication device to the local device on a basis of the reception status information received by the reception status information reception unit; and a setting information transmission unit that traType: ApplicationFiled: January 17, 2022Publication date: March 13, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyoshi KOJIMA, Daisuke GOTO, Kiyohiko ITOKAWA, Kazumitu SAKAMOTO, Tomoya KAGEYAMA
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Patent number: 12219739Abstract: An element-mounted board includes a heat-dissipating plate in which aluminum or magnesium-containing metal layers are formed on both front and back surfaces of a flat plate-shaped metal-silicon carbide complex including aluminum or magnesium, and an electronic element including a ceramic plate, which is mounted on one surface side of the heat-dissipating plate, in which a flatness of the other surface of the heat-dissipating plate is 600 ?m or less.Type: GrantFiled: March 11, 2021Date of Patent: February 4, 2025Assignee: DENKA COMPANY LIMITEDInventors: Daisuke Goto, Hiroaki Ota
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Patent number: 12213286Abstract: A plate-shaped heat dissipation member includes a metal-silicon carbide composite containing aluminum or magnesium, in which at least one of two main surfaces of the heat dissipation member is curved to be convex in an outward direction of the heat dissipation member, and when a flatness of the one main surface defined by JIS B 0621 is represented by f1 and a flatness of the other main surface different from the one main surface defined by JIS B 0621 is represented by f2, f2 is less than f1 by 10 ?m or more.Type: GrantFiled: January 29, 2020Date of Patent: January 28, 2025Assignee: DENKA COMPANY LIMITEDInventors: Daisuke Goto, Hiroaki Ota
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Patent number: 12207210Abstract: A plurality of control signals transmitted in individual frequency bands by a moving transmission station via a plurality of transmission antennas and a plurality of data signals transmitted in a common frequency band by the transmission station via the plurality of transmission antennas in synchronization with the control signals are received by each of a plurality of antennas disposed at different positions. Based on symbol timings of the control signals received by the antenna, a sampling rate error between the plurality of control signals transmitted by the plurality of transmission antennas, respectively, is compensated for. Based on the control signals subjected to the sampling rate error compensation, frame timings of the plurality of data signals transmitted by the transmission station via the plurality of transmission antennas are synchronized.Type: GrantFiled: February 27, 2020Date of Patent: January 21, 2025Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke Goto, Fumihiro Yamashita, Kiyohiko Itokawa