Patents by Inventor Kengo Uda
Kengo Uda 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: 10905954Abstract: An information processing device is disclosed including a processor that controls progress of a game in which a plurality of players can participate simultaneously based on operation inputs at a plurality of game terminals. The plurality of game terminals includes a leader terminal and a member terminal. The information processing device further includes memory connected to the processor and that manages one of the plurality of game terminals as a host terminal. The processor causes the memory to set the leader terminal as the host terminal. The processor inspects communication quality of the host terminal during execution of the game. When the leader terminal is the host terminal and the communication quality satisfies a predetermined condition, the processor causes the memory to set the member terminal as the host terminal, without changing the leader player.Type: GrantFiled: March 28, 2018Date of Patent: February 2, 2021Assignee: SEGA CORPORATIONInventors: Takashi Murakami, Kengo Uda, Kenichi Yamamoto
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Publication number: 20180280797Abstract: An information processing device is disclosed including a processor that controls progress of a game in which a plurality of players can participate simultaneously based on operation inputs at a plurality of game terminals. The plurality of game terminals includes a leader terminal and a member terminal. The information processing device further includes memory connected to the processor and that manages one of the plurality of game terminals as a host terminal. The processor causes the memory to set the leader terminal as the host terminal. The processor inspects communication quality of the host terminal during execution of the game. When the leader terminal is the host terminal and the communication quality satisfies a predetermined condition, the processor causes the memory to set the member terminal as the host terminal, without changing the leader player.Type: ApplicationFiled: March 28, 2018Publication date: October 4, 2018Applicant: KABUSHIKI KAISHA SEGA Games doing business as SEGA Games Co., Ltd.Inventors: Takashi Murakami, Kengo Uda, Kenichi Yamamoto
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Patent number: 9683573Abstract: A control unit includes an excessive output suppression control unit which suppresses an excessive output by reducing a current command value from a host control apparatus. A control signal output unit obtains a motor control signal by adding a reduction amount of the current command value to the current command value. The excessive output suppression control unit includes: an oil pressure estimating unit which estimates oil pressure based on a current and a rotating speed of the electric motor; and a current command value correction amount calculating unit which compares outputs the reduction amount of the current command value if the estimated oil pressure is higher than target oil pressure. One of the target oil pressure and the estimated oil pressure compared by the current command value correction amount calculating unit is corrected based on oil temperature information.Type: GrantFiled: December 27, 2012Date of Patent: June 20, 2017Assignee: JTEKT CORPORATIONInventors: Hiroki Kagawa, Kengo Uda, Yasuyuki Aoki
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Patent number: 9322410Abstract: An electric pump device of an aspect of the invention includes a state determination unit and a gain adjusting unit. The state determination unit determines whether or not the electric pump device is in a stable state where a required oil pressure is supplied to a hydraulic operating device by maintaining a rotation state of a motor. The gain adjusting unit adjusts a gain for a current feedback control so as to reduce responsiveness of the current feedback control when the state determination unit determines that the electric pump device is in the stable state.Type: GrantFiled: January 25, 2012Date of Patent: April 26, 2016Assignee: JTEKT CORPORATIONInventor: Kengo Uda
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Patent number: 9309881Abstract: In an electric pump system, hydraulic fluid that is stored in an oil pan is supplied to a transmission mechanism through an oil passage by driving an oil pump with the use of a motor. An EOPECU estimates a hydraulic pressure of the hydraulic fluid on the basis of a driving current for the motor and a rotation speed of the motor, and executes drive control on the motor on the basis of the estimated hydraulic pressure value.Type: GrantFiled: December 27, 2012Date of Patent: April 12, 2016Assignee: JTEKT CORPORATIONInventors: Kengo Uda, Yasuyuki Aoki, Hiroki Kagawa
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Publication number: 20150010408Abstract: A control unit includes an excessive output suppression control unit which suppresses an excessive output by reducing a current command value from a host control apparatus. A control signal output unit obtains a motor control signal by adding a reduction amount of the current command value to the current command value. The excessive output suppression control unit includes: an oil pressure estimating unit which estimates oil pressure based on a current and a rotating speed of the electric motor; and a current command value correction amount calculating unit which compares outputs the reduction amount of the current command value if the estimated oil pressure is higher than target oil pressure. One of the target oil pressure and the estimated oil pressure compared by the current command value correction amount calculating unit is corrected based on oil temperature information.Type: ApplicationFiled: December 27, 2012Publication date: January 8, 2015Applicant: JTEKT CORPORATIONInventors: Hiroki Kagawa, Kengo Uda, Yasuyuki Aoki
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Publication number: 20130309101Abstract: An electric pump device of an aspect of the invention includes a state determination unit and a gain adjusting unit. The state determination unit determines whether or not the electric pump device is in a stable state where a required oil pressure is supplied to a hydraulic operating device by maintaining a rotation state of a motor. The gain adjusting unit adjusts a gain for a current feedback control so as to reduce responsiveness of the current feedback control when the state determination unit determines that the electric pump device is in the stable state.Type: ApplicationFiled: January 25, 2012Publication date: November 21, 2013Applicant: JTEKT CORPORATIONInventor: Kengo Uda
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Publication number: 20130280101Abstract: There is provided an electric pump device that can suppress the generation of vibration or noise. When reducing hydraulic pressure supplied from an oil pump with the increase of hydraulic pressure supplied from a main pump driven by an engine, an electric oil pump ECU performs a pressure reducing control gradually reducing the hydraulic pressure.Type: ApplicationFiled: January 4, 2012Publication date: October 24, 2013Applicant: JTEKT CORPORATIONInventors: Fukami Imai, Kengo Uda
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Patent number: 6501628Abstract: To provide a method of synchronous circuit opening of generator circuit breaker and its control apparatus that can protect a sound generator system of a generator main circuit from a phenomenon that current may not pass through current zero for many cycles. There is provided a construction where a generator exciting current control is incorporated into a control mechanism. In case that an occurrence possibility of a phenomenon that current may not pass through current zero for many cycles can be anticipated, time delay is intentionally caused by timer so as to prevent synchronism of the phenomenon, using an output signal of a generator lock-out relay which covers individual element of an electrical fault causing the phenomenon or in which circuit all those elements are integrated. In case that the phenomenon can be anticipated by calculation, a reactive power output of a generator is increased and consequently AC current amplitude of a sound generator is increased so as to eliminate the phenomenon.Type: GrantFiled: November 28, 2000Date of Patent: December 31, 2002Assignee: Hitachi, Ltd.Inventors: Shigeaki Namba, Kengo Uda, Masayuki Fukai
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Patent number: 5783932Abstract: The object of the invention is to provide an electric power plant and a control apparatus therefor which can obtain an emergency power supply reliably through use of the turbine starter. Another generator different from the main generator coupled to the rotor shaft of the turbine is provided to the input side of the starter via a motor, and a control apparatus is provided for electrically connecting the starter and the generators responsive to a bus voltage from the in-house power supply unit which supplies electricity to a plurality of auxiliary equipment operating in the electric power plant. Thereby, an emergency power supply can be obtained reliably by the simple configuration of the invention without installing emergency power generation facilities such as a diesel engine, gas turbine or the like. In addition, an LCI device which has been utilized only at the time of turbine start up can be utilized advantageously also at the time of emergency when the in-house power supply is lost.Type: GrantFiled: March 21, 1996Date of Patent: July 21, 1998Assignee: Hitachi, Ltd.Inventors: Shigeaki Namba, Kengo Uda