Patents by Inventor Takahisa Yamauchi
Takahisa Yamauchi 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: 20240098005Abstract: A master station (111) and a slave station (121) each communicate an individually set, fixed number of communication frames in a cyclic period. The communication frame contains, as communication information, a sequence number and a period number. The master base station (113) and the slave base station (123) determine, upon communication of each communication frame in a wireless manner, if there is a missing communication frame on a basis of the communication information of a this-time communication frame and the communication information of a last-time communication frame. When there is a missing communication frame, a history management server (300) records communication history information of the last-time communication frame and of the this-time communication frame, as preceding/succeeding history information.Type: ApplicationFiled: November 28, 2023Publication date: March 21, 2024Applicant: Mitsubishi Electric CorporationInventors: Yoshihiro OTSUKA, Teruko FUJII, Takenori SUMI, Takahisa YAMAUCHI
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Publication number: 20240083446Abstract: A database creation unit (154) accumulates, in a driving condition database (160), driving condition data wherein feature amounts representing features of driving operation, travelling environment information including travelling spots and road shapes, driver information including attributes of drivers and vehicle type information of vehicles, and whether the drivers have driving experiences of the vehicles are associated with driver identifiers. A driving characteristic estimation unit (155) estimates a driving characteristic of a driver presently driving a vehicle based on the driving condition database (160).Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: Mitsubishi Electric CorporationInventors: Tatsuya YOKOYAMA, Takahisa YAMAUCHI, Yoshitsugu KAWAMURA
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Publication number: 20240040491Abstract: A communication control system (500) includes a plurality of control devices (100) that communicate via a 5G network and a plurality of controlled devices (200) respectively controlled by the plurality of control devices (100). A control device (100) acquires, from emergency stop group information, emergency stop group numbers of emergency stop groups to which the control devices (100) belong. Then, the control device (100) calculates the total number of emergency stop groups, and creates slice information for connecting to the same number of UPFs as the total number of emergency stop groups. The control device (100) registers itself with the 5G network, acquires UPF destination information, which is destination information to UPFs (410), and stores, in a destination conversion table, information in which each emergency stop group number is associated with a destination UPF without duplication of a destination UPF (410) between the emergency stop groups.Type: ApplicationFiled: October 16, 2023Publication date: February 1, 2024Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yohei YASUTOMO, Koshiro ISHIHARA, Takahisa YAMAUCHI
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Publication number: 20230020415Abstract: A vehicle control system (500) controls a vehicle whereon a plurality of ECUs (30) and a vehicle integrated control device (10) to control the plurality of ECUs (30) are mounted. The vehicle integrated control device (10) includes a control target value operation unit to calculate a control target value to control the plurality of ECUs (30). Further, the vehicle integrated control device (10) includes a prediction control value operation unit to estimate a state of the vehicle in the future, and to calculate a prediction control value to control the plurality of ECUs (30). The vehicle integrated control device (10) includes an instruction signal generation unit to generate an instruction signal including an operation instruction and a prediction control instruction. Each of the plurality of ECUs (30) includes an actuator control unit to control an actuator (50) based on the prediction control instruction.Type: ApplicationFiled: September 28, 2022Publication date: January 19, 2023Applicant: Mitsubishi Electric CorporationInventors: Kentaro SAWA, Hajime HASEGAWA, Takahisa YAMAUCHI
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Patent number: 10314107Abstract: A communication device that wirelessly communicates with a plurality of wireless slave stations includes: a wireless network control unit that acquires network configuration information including the number of repeating stages between the communication device and the plurality of wireless slave stations and the number of wireless slave stations that is the total number of the plurality of wireless slave stations; a parameter management unit that stores a delay time for communication; and a communication cycle calculation unit that calculates a communication cycle based on the network configuration information and the delay time.Type: GrantFiled: April 21, 2015Date of Patent: June 4, 2019Assignee: Mitsubishi Electric CorporationInventor: Takahisa Yamauchi
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Publication number: 20180098362Abstract: A communication device that wirelessly communicates with a plurality of wireless slave stations includes: a wireless network control unit that acquires network configuration information including the number of repeating stages between the communication device and the plurality of wireless slave stations and the number of wireless slave stations that is the total number of the plurality of wireless slave stations; a parameter management unit that stores a delay time for communication; and a communication cycle calculation unit that calculates a communication cycle based on the network configuration information and the delay time.Type: ApplicationFiled: April 21, 2015Publication date: April 5, 2018Applicant: Mitsubishi Electric CorporationInventor: Takahisa YAMAUCHI
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Patent number: 9642085Abstract: A transmission-source radio communication apparatus includes a transmission-time-sum integrating unit integrating transmission time per unit time of a radio frame, a transmission-time estimating and integrating unit estimating and integrating the transmission time per unit time in the future of a radio device number frame, a transmission-limit-time-of-day estimating unit estimating, using two integration results, a sum-limit-exceeding estimated time of day and a less-than-sum-limit estimated time of day, and a transmission control unit notifying a destination radio communication apparatus of the two estimated times of day.Type: GrantFiled: July 31, 2012Date of Patent: May 2, 2017Assignee: Mitsubishi Electric CorporationInventor: Takahisa Yamauchi
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Patent number: 9232539Abstract: A terminal mode of at least a part of terminals in a centralized control area and terminals in a distributed control area is set to a time division control mode for performing communication in a time division manner. The terminals in the centralized control area, the terminal mode of which is other than the time division control mode, are set in a centralized control mode. The terminals, the terminal mode of which is other than the time division control mode, are set in a distributed control mode. The terminals set in the time division control mode perform transmission in a communication period in which communication is permitted. The terminals set in the centralized control mode and the terminals set in the distributed control mode perform communication without depending on the communication period.Type: GrantFiled: June 14, 2012Date of Patent: January 5, 2016Assignee: Mitsubishi Electric CorporationInventors: Yuya Takatsuka, Takahisa Yamauchi
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Publication number: 20150055530Abstract: A transmission-source radio communication apparatus includes a transmission-time-sum integrating unit integrating transmission time per unit time of a radio frame, a transmission-time estimating and integrating unit estimating and integrating the transmission time per unit time in the future of a radio device number frame, a transmission-limit-time-of-day estimating unit estimating, using two integration results, a sum-limit-exceeding estimated time of day and a less-than-sum-limit estimated time of day, and a transmission control unit notifying a destination radio communication apparatus of the two estimated times of day.Type: ApplicationFiled: July 31, 2012Publication date: February 26, 2015Applicant: Mitsubishi Electric CorporationInventor: Takahisa Yamauchi
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Publication number: 20140376527Abstract: A terminal mode of at least a part of terminals in a centralized control area and terminals in a distributed control area is set to a time division control mode for performing communication in a time division manner. The terminals in the centralized control area, the terminal mode of which is other than the time division control mode, are set in a centralized control mode. The terminals, the terminal mode of which is other than the time division control mode, are set in a distributed control mode. The terminals set in the time division control mode perform transmission in a communication period in which communication is permitted. The terminals set in the centralized control mode and the terminals set in the distributed control mode perform communication without depending on the communication period.Type: ApplicationFiled: June 14, 2012Publication date: December 25, 2014Applicant: Mitsubishi Electric CorporationInventors: Yuya Takatsuka, Takahisa Yamauchi
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Patent number: 8325701Abstract: A base station of a radio communication system emits a radio wave having the same frequency by time division toward a plurality of specific areas from a plurality of antenna elements by using a multiple-beam antenna to form a plurality of spot beams, and transmits broadcast information through a plurality of beacon channels. Upon reception of the broadcast information, a terminal that exists in any one of the plurality of specific areas selects an optimum beacon channel, and transmits a communication establishment request and a bandwidth request to the base station through a request channel corresponding to information for identifying the antenna element, which is included in the broadcast information received through the selected optimum beacon channel. Upon reception of the requests, the base station schedules, when a channel is to be allocated, a channel allocation time including downlink and uplink data bandwidths and the like.Type: GrantFiled: August 29, 2007Date of Patent: December 4, 2012Assignee: Mitsubishi Electric CorporationInventors: Takahisa Yamauchi, Yukimasa Nagai, Akinori Taira
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Patent number: 8238835Abstract: A first wireless terminal station transmits beam transmission direction identification information in all directions. A second wireless terminal station receives the transmission direction identification information, combines reception direction identification information and the transmission direction identification information, and transmits directivity direction combination information to a wireless base station. The first and the second wireless terminal stations form directional beams in directions indicated by the directivity direction combination information to thereby perform a direct communication.Type: GrantFiled: December 5, 2007Date of Patent: August 7, 2012Assignee: Mitsubishi Electric CorporationInventors: Yukimasa Nagai, Takahisa Yamauchi, Tetsuya Kosaka
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Patent number: 7697560Abstract: A base station assigns a most appropriate carrier from wide frequency bands in response to a re-request for channel establishment received from a mobile station, even if a same slot as a slot last assigned is assigned. Furthermore, a frequency management table is managed in which carriers that form a radio channel and are grouped by a specific number thereof so as to be distributed over wide frequency bands. Priorities used to search groups are individually provided for base stations that form a system. This allows neighboring base stations to distribute carriers over the wide frequency bands.Type: GrantFiled: January 30, 2004Date of Patent: April 13, 2010Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takahisa Yamauchi, Genya Kotani, Tetsuya Mishuku
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Publication number: 20100016023Abstract: A base station of a radio communication system emits a radio wave having the same frequency by time division toward a plurality of specific areas from a plurality of antenna elements by using a multiple-beam antenna to form a plurality of spot beams, and transmits broadcast information through a plurality of beacon channels. Upon reception of the broadcast information, a terminal that exists in any one of the plurality of specific areas selects an optimum beacon channel, and transmits a communication establishment request and a bandwidth request to the base station through a request channel corresponding to information for identifying the antenna element, which is included in the broadcast information received through the selected optimum beacon channel. Upon reception of the requests, the base station schedules, when a channel is to be allocated, a channel allocation time including downlink and uplink data bandwidths and the like.Type: ApplicationFiled: August 29, 2007Publication date: January 21, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takahisa Yamauchi, Yukimasa Nagai, Akinori Taira
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Publication number: 20100014463Abstract: A first wireless terminal station transmits beam transmission direction identification information in all directions. A second wireless terminal station receives the transmission direction identification information, combines reception direction identification information and the transmission direction identification information, and transmits directivity direction combination information to a wireless base station. The first and the second wireless terminal stations form directional beams in directions indicated by the directivity direction combination information to thereby perform a direct communication.Type: ApplicationFiled: December 5, 2007Publication date: January 21, 2010Applicant: Mitsubishi Electric CorporationInventors: Yukimasa Nagai, Takahisa Yamauchi, Tetsuya Kosaka
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Publication number: 20070060179Abstract: A base station assigns a most appropriate carrier from wide frequency bands in response to a re-request for channel establishment received from a mobile station, even if a same slot as a slot last assigned is assigned. Furthermore, a frequency management table is managed in which carriers that form a radio channel and are grouped by a specific number thereof so as to be distributed over wide frequency bands. Priorities used to search groups are individually provided for base stations that form a system. This allows neighboring base stations to distribute carriers over the wide frequency bands.Type: ApplicationFiled: January 30, 2004Publication date: March 15, 2007Inventors: Takahisa Yamauchi, Genya Kotani, Tetsuya Mishuku
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Patent number: 7024173Abstract: A control unit measures a phase error between a reference timing of a mobile station and a reception timing from a base station based on reception data from a reception unit and a count from a reference timing counter unit, determines a frequency deviation correction value calculation period corresponding to the measured phase error, and outputs it to a frequency deviation correction value calculation unit. The frequency deviation correction value calculation unit does not calculate a deviation at every reception time when intermittent reception is repeated, but calculates a deviation at intervals following the frequency deviation correction value calculation period given from the control unit.Type: GrantFiled: March 15, 2002Date of Patent: April 4, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takahisa Yamauchi, Akihiro Shibuya
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Patent number: 7013119Abstract: A radio communication apparatus includes a low-rate clock oscillator for generating a low-rate clock signal used for reception timing estimation; a frequency deviation measuring duration controller for determining a deviation measuring duration of measuring a frequency deviation of the low-rate clock signal in accordance with an intermittent time interval of the radio signal; a frequency deviation measuring section for measuring the frequency deviation of the low-rate clock signal over the deviation measuring duration; and a timing counter for correcting the frequency deviation of the low-rate clock signal, for measuring an intermittent span of the received signal in response to the low-rate clock signal after the correction, and for generating the estimated reception timing of the radio signal.Type: GrantFiled: June 3, 2002Date of Patent: March 14, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takahisa Yamauchi, Akihiro Shibuya
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Publication number: 20040162046Abstract: A radio communication apparatus includes a low-rate clock oscillator for generating a low-rate clock signal used for reception timing estimation; a frequency deviation measuring duration controller for determining a deviation measuring duration of measuring a frequency deviation of the low-rate clock signal in accordance with an intermittent time interval of the radio signal; a frequency deviation measuring section for measuring the frequency deviation of the low-rate clock signal over the deviation measuring duration; and a timing counter for correcting the frequency deviation of the low-rate clock signal, for measuring an intermittent span of the received signal in response to the low-rate clock signal after the correction, and for generating the estimated reception timing of the radio signal.Type: ApplicationFiled: November 17, 2003Publication date: August 19, 2004Inventors: Takahisa Yamauchi, Akihiro Shibuya
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Publication number: 20040152438Abstract: A control unit (51) measures a phase error (&lgr;) between a reference timing of a mobile station and a reception timing from a base station based on reception data (45t) from a reception unit (45) and a count (36t) from a reference timing counter unit (36), determines a frequency deviation correction value calculation period (35r) corresponding to the measured phase error (&lgr;), and outputs it to a frequency deviation correction value calculation unit (35). The frequency deviation correction value calculation unit (35) does not calculate a deviation at every reception time when intermittent reception is repeated, but calculates a deviation at intervals following the frequency deviation correction value calculation period (35r) given from the control unit (51).Type: ApplicationFiled: November 25, 2003Publication date: August 5, 2004Inventors: Takahisa Yamauchi, Akihiro Shibuya