Patents by Inventor Masahiro Maeda
Masahiro Maeda 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: 10589779Abstract: An electric power steering apparatus includes: a current command value determining section that determines a current command value based on steering torque and vehicle speed; a vibration extracting filter that extracts a first vibration component having a predetermined amplitude and first predetermined frequency range depending on motor angular velocity; a vibration extracting section that extracts a second vibration component having a second predetermined frequency range depending on motor angular acceleration; a first compensation value calculating section that calculates a first vibration suppression compensation value based on the first vibration component extracted by the vibration extracting filter; and a second compensation value calculating section that calculates a second vibration suppression compensation value based on the second vibration component; and suppresses vibrations of the motor by feeding back the first vibration suppression compensation value and the second vibration suppression compensType: GrantFiled: December 21, 2015Date of Patent: March 17, 2020Assignee: NSK LTD.Inventors: Takayoshi Sugawara, Yousuke Imamura, Masahiro Maeda
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Patent number: 10581555Abstract: An information processing device is provided that includes a receiver to receive information from another information processing device that mutually communicates the information and a processor to process the information received by the receiver. The receiver detects occurrence of a burst error in the received information, sequentially writes the received information in a first memory, stops the writing of the information to the first memory based on detection of the burst error, shuts off transmission of the information received from the another information processing device based on a reproducing instruction, and transmits the information read from the first memory.Type: GrantFiled: January 11, 2018Date of Patent: March 3, 2020Assignee: FUJITSU LIMITEDInventors: Masahiro Maeda, Atsushi Miki
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Patent number: 10398147Abstract: An oven includes a conveying part configured to convey a food material, a first region and a second region to perform a first baking process and a second baking process, respectively, on the conveyed food material, and an intermediate region between the first region and the second region. The oven further includes a movable first partition provided between the first region and the intermediate region and a movable second partition provided between the intermediate region and the second region. The intermediate region is added as a region to perform the first baking process to the first region in response to the first partition being opened and the second partition being closed. The intermediate region is added as a region to perform the second baking process to the second region in response to the first partition being closed and the second partition being opened.Type: GrantFiled: July 26, 2016Date of Patent: September 3, 2019Assignees: Naigai Vicars Co., Ltd., Naigai Industries, Inc.Inventor: Masahiro Maeda
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Publication number: 20190210393Abstract: Provided are neat alignment plates which are provided outside a main body housing of a sheet processing apparatus, shift in an alignment direction orthogonal to a transport direction of a sheet loaded on a load tray to load sheets discharged from a discharge opening, and which align opposite sides of the sheet, and a sheet support surface provided in a different position adjacent to a processing tray in the alignment direction to support sheets inserted from a manual feed opening provided outside the main body housing, a binding apparatus for performing binding processing on sheets placed on the processing tray shifts to the processing tray and the sheet support surface, and is provided to be able to perform the binding processing on sheets placed on the processing tray or the sheet support surface, and the neat alignment plates are positioned in positions for not blocking the manual feed opening during the binding processing on manually fed sheets on the sheet support surface.Type: ApplicationFiled: December 26, 2018Publication date: July 11, 2019Applicant: CANON FINETECH NISCA INC.Inventors: Daiki KOMIYAMA, Akihiko TSUKUI, Masahiro MAEDA
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Patent number: 10274068Abstract: A spring assembly for absorbing and attenuating a torsional vibration includes an outer coil spring and an inner coil spring. The inner coil spring is disposed in an interior of the outer coil spring. The inner coil spring has a shorter free length than the outer coil spring. The inner coil spring is chamfered on end surfaces of both ends thereof. The inner coil spring has an outer diameter set to be smaller at least at an endmost winding on each of the ends thereof than at other windings thereof.Type: GrantFiled: February 17, 2017Date of Patent: April 30, 2019Assignee: EXEDY CORPORATIONInventors: Mitsuru Kuwahata, Masahiro Maeda
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Patent number: 10230625Abstract: An information processing apparatus including: an arithmetic processing unit; and a communication device configured to receive data from another information processing apparatus through a plurality of first lanes and to output the received data to the arithmetic processing unit, wherein the communication device includes a detection unit that detects a failure of the plurality of first lanes; and a control unit that performs a first degradation process of stopping use of any one of the plurality of first lanes, based on a degradation request, performs a restoration process of resuming use of a first lane for which use has been stopped, based on a restoration request, and performs a second degradation process of stopping use of a first lane for which use has been resumed, when the detection unit detects a failure of the first lane for which use has been resumed, in the restoration process.Type: GrantFiled: October 27, 2015Date of Patent: March 12, 2019Assignee: FUJITSU LIMITEDInventors: Masahiro Maeda, Koichiro Takayama, Tomohiro Inoue, Shinya Hiramoto, Shun Ando, Yuichiro Ajima
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Patent number: 10202748Abstract: A sanitary washing device includes a body washing function unit, a casing, and a water supply connection unit. The body washing function unit includes a washing nozzle. The casing includes a base plate and a main body cover. The casing houses the body washing function unit in an enclosed space defined by the base plate and the main body cover. The water supply connection unit is provided in the enclosed space and has a connection port. The connection port is detachably connected to a water supply pipe. The casing has an opening at a bottom of the casing. The casing is configured such that the water supply pipe can be attached to and detached from the connection port. The connection port is disposed at a position accessible through the opening. The connection port is disposed at a position accessible from above when the main body cover is detached.Type: GrantFiled: July 29, 2016Date of Patent: February 12, 2019Assignee: TOTO, Ltd.Inventors: Masahiro Maeda, Mitsunori Kai
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Patent number: 10099721Abstract: An electric power steering apparatus that reduces an uncomfortable feeling due to a noise at a steering holding and a low-speed steering time, and can smoothly steers so as to prevent a phase-lag at a high-speed steering time. The apparatus has a torque control section to calculate a current command value based on at least a steering torque, and assist-controls a steering system by driving a motor using a current control system based on the current command value. A motor angular velocity calculating section calculates a motor angular velocity from a motor rotational angle; a motor angular acceleration calculating section calculates a motor angular acceleration from the motor angular velocity; and a stability compensating section calculates a steering torque for compensation and a current command value for compensation based on the motor angular velocity and the motor angular acceleration. The steering torque compensates the steering torque, and the current command value compensates the current command value.Type: GrantFiled: November 5, 2015Date of Patent: October 16, 2018Assignee: NSK LTD.Inventors: Keita Yoshida, Yousuke Imamura, Masahiro Maeda
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Publication number: 20180205495Abstract: An information processing device includes: a receiver configured to receive information from another information processing device that mutually communicates the information; and a processor configured to process the information received by the receiver, the receiver: detects occurrence of a burst error in the received information; sequentially writes the received information in a first memory; stops the writing of the information to the first memory based on detection of the burst error; shuts off transmission of the information received from the another information processing device based on a reproducing instruction; and transmits the information read from the first memory.Type: ApplicationFiled: January 11, 2018Publication date: July 19, 2018Applicant: FUJITSU LIMITEDInventors: Masahiro Maeda, Atsushi Miki
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Publication number: 20180170422Abstract: An electric power steering apparatus that reduces an uncomfortable feeling due to a noise at a steering holding and a low-speed steering time, and can smoothly steers so as to prevent a phase-lag at a high-speed steering time. The apparatus has a torque control section to calculate a current command value based on at least a steering torque, and assist-controls a steering system by driving a motor using a current control system based on the current command value. A motor angular velocity calculating section calculates a motor angular velocity from a motor rotational angle; a motor angular acceleration calculating section calculates a motor angular acceleration from the motor angular velocity; and a stability compensating section calculates a steering torque for compensation and a current command value for compensation based on the motor angular velocity and the motor angular acceleration. The steering torque compensates the steering torque, and the current command value compensates the current command value.Type: ApplicationFiled: November 5, 2015Publication date: June 21, 2018Applicant: NSK LTD.Inventors: Keita YOSHIDA, Yousuke IMAMURA, Masahiro MAEDA
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Patent number: 10002078Abstract: An information processing apparatus includes: storage devices that store data; a data generation unit that generates padding-added data by adding padding to the data, based on adjustment information included in received data; and a storage processing unit that stores the padding-added data generated by the data generation unit in the storage devices. It is possible to shorten a latency even when non-aligned data is received.Type: GrantFiled: March 6, 2015Date of Patent: June 19, 2018Assignee: FUJITSU LIMITEDInventors: Shinya Hiramoto, Yuichiro Ajima, Tomohiro Inoue, Yuta Toyoda, Shun Ando, Masahiro Maeda
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Patent number: 9893992Abstract: A communication apparatus includes a connection port and a processor. The connection port is connected to a switch apparatus. The processor is configured to acquire data to be transmitted to an external apparatus. The processor is configured to generate a packet destined to the external apparatus. The packet contains the data. The processor is configured to store the packet in a buffer. The processor is configured to acquire the packet from the buffer. The processor is configured to transmit the packet to the switch apparatus via the connection port. The processor is configured to acquire a state of a network to which the connection port is connected. The processor is configured to control, on basis of the state of the network and a predetermined packet generation time, a number of packets to be generated.Type: GrantFiled: October 6, 2015Date of Patent: February 13, 2018Assignee: FUJITSU LIMITEDInventors: Shinya Hiramoto, Tomohiro Inoue, Shun Ando, Masahiro Maeda, Masao Yoshikawa
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Patent number: 9882519Abstract: A motor control apparatus that calculates duty command values of respective phases for controlling currents of a motor by means of a control calculation, forms PWM-signals in correspondence to the duty command values, drives the motor by means of an inverter based on the PWM-signals, and which is provided a rotation sensor to detect a motor angle of the motor.Type: GrantFiled: December 19, 2014Date of Patent: January 30, 2018Assignee: NSK LTD.Inventors: Tomohiro Miura, Masahiro Maeda, Yousuke Imamura
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Patent number: 9840272Abstract: An electric power steering apparatus that improves an on-center feeling while improving vehicle response by increasing a steering assist current in a torque range where a steering torque is equal to or less than a static friction torque of a reduction mechanism mainly so as to reduce a static friction uncomfortable feeling in the vicinity of on-center. The apparatus drive-controls a motor for providing a steering mechanism with a steering assist force using a current command value calculated based on at least a steering torque. The apparatus includes: a static friction compensating section that calculates a static friction compensation command value for compensating static friction of the steering mechanism based on the steering torque and a vehicle speed, wherein the current command value is corrected with the static friction compensation command value.Type: GrantFiled: August 3, 2015Date of Patent: December 12, 2017Assignee: NSK LTD.Inventors: Takayoshi Sugawara, Masahiro Maeda
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Publication number: 20170349208Abstract: An electric power steering apparatus includes: a current command value determining section that determines a current command value based on steering torque and vehicle speed; a vibration extracting filter that extracts a first vibration component having a predetermined amplitude and first predetermined frequency range depending on motor angular velocity; a vibration extracting section that extracts a second vibration component having a second predetermined frequency range depending on motor angular acceleration; a first compensation value calculating section that calculates a first vibration suppression compensation value based on the first vibration component extracted by the vibration extracting filter; and a second compensation value calculating section that calculates a second vibration suppression compensation value based on the second vibration component; and suppresses vibrations of the motor by feeding back the first vibration suppression compensation value and the second vibration suppression compensType: ApplicationFiled: December 21, 2015Publication date: December 7, 2017Applicant: NSK LTD.Inventors: Takayoshi SUGAWARA, Yousuke IMAMURA, Masahiro MAEDA
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Patent number: 9796411Abstract: [Problem] An object of the present invention is to provide a high-performance electric power steering apparatus that reduces uncomfortable feeling of a driver by improving judgment of turning or returning and performing fine control of a steering state to improve a function of convergence control.Type: GrantFiled: April 7, 2015Date of Patent: October 24, 2017Assignee: NSK LTD.Inventors: Masahiro Ieyasu, Masahiro Maeda
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Publication number: 20170276221Abstract: A spring assembly for absorbing and attenuating a torsional vibration includes an outer coil spring and an inner coil spring. The inner coil spring is disposed in an interior of the outer coil spring. The inner coil spring has a shorter free length than the outer coil spring. The inner coil spring is chamfered on end surfaces of both ends thereof. The inner coil spring has an outer diameter set to be smaller at least at an endmost winding on each of the ends thereof than at other windings thereof.Type: ApplicationFiled: February 17, 2017Publication date: September 28, 2017Inventors: Mitsuru KUWAHATA, Masahiro MAEDA
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Publication number: 20170279394Abstract: A motor control apparatus that calculates duty command values of respective phases for controlling currents of a motor by means of a control calculation, forms PWM-signals in correspondence to the duty command values, drives the motor by means of an inverter based on the PWM-signals, and which is provided a rotation sensor to detect a motor angle of the motor.Type: ApplicationFiled: December 19, 2014Publication date: September 28, 2017Applicant: NSK LTD.Inventors: Tomohiro MIURA, Masahiro MAEDA, Yousuke IMAMURA
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Patent number: 9755888Abstract: An information processing device includes a transfer unit and an interface unit, the interface unit distributes transmission to a plurality of first lanes, and generate reception information from a plurality of pieces of distribution reception data received through a plurality of second lanes, the transfer unit includes a reception processing unit to extract reception data included in the reception information, and first error information indicating an error in any of the first lanes and a degeneration management unit to generate first degeneration information indicating a use stop lane among the first lanes, based on the first error information, generate second degeneration information indicating a use stop lane among the plurality of second lanes, based on second error information that is output from the interface unit, and cause the transmission processing unit to generate transmission information including the second degeneration information.Type: GrantFiled: October 15, 2015Date of Patent: September 5, 2017Assignee: FUJITSU LIMITEDInventors: Tomohiro Inoue, Shun Ando, Shinya Hiramoto, Masahiro Maeda, Masao Yoshikawa
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Patent number: 9749222Abstract: A parallel computer includes a plurality of nodes. Each of the nodes includes a router directly or indirectly connected to each of the other nodes and a network interface connected to an external network of the parallel computer. The network interface includes a storage unit that holds detour route information indicating a detour route corresponding to a communication route from a node in which the network interface is included to another node. The network interface further includes a reception processing unit that, when the network interface receives data destined to one node of the parallel computer from the external network, sets detour route information corresponding to a communication route from the node in which the network interface is included to the destination node of the data for the data and transmits the data for which the detour route information is set to the destination node.Type: GrantFiled: March 20, 2015Date of Patent: August 29, 2017Assignee: FUJITSU LIMITEDInventors: Tomohiro Inoue, Yuichiro Ajima, Shinya Hiramoto, Masahiro Maeda, Shun Ando, Yuta Toyoda