Patents by Inventor Yuji Takada
Yuji Takada 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: 20210132191Abstract: This radar device can recognize the type of a specific target (in particular, a two-wheeled vehicle) with high precision, using only the radar device. The radar device comprises: a transmission unit that transmits a transmission wave, based on a transmission signal, toward the target; a receiving unit that receives a reflected wave generated by the transmission wave being reflected by the target, and thereby generates a reception signal; and a target detection unit that acquires information on the target on the basis of the transmission signal and the reception signal. The target detection unit calculates the relative speeds of a plurality of detection points within the same target, and determines the type of the target on the basis of the spread of the relative speeds.Type: ApplicationFiled: September 20, 2018Publication date: May 6, 2021Applicant: MITSUMI ELECTRIC CO., LTD.Inventor: Yuji TAKADA
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Publication number: 20210116537Abstract: Provided is a proximity sensor (100) comprising a reception circuit (122) for receiving a reflection signal, from an object, of an FM-CW signal transmitted from a transmission unit (110), a DC component acquiring unit (average-value calculating unit 125) for acquiring a DC component included in the reflection signal received by the reception circuit (122), and a determination unit (threshold determining unit 128) for determining whether a near object is present or not on the basis of the DC component acquired by the DC component acquiring unit (average-value calculating unit 125). This allows implementation of a proximity sensor (100) capable of eliminating the effects of objects other than the near object that is a target to be detected and more accurately detecting, in various environments, whether the short-distance object is present or not.Type: ApplicationFiled: April 23, 2019Publication date: April 22, 2021Applicant: Mitsumi Electric Co., Ltd.Inventor: Yuji TAKADA
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Patent number: 10823846Abstract: In an object detection method, a moving speed v0 of a radar device and an angle ?1 defined between a moving direction of the radar device and a reception direction of a radar wave reflected on a target are acquired, a first function which expresses a relative speed v1 between the radar device and the target by the speed v0 and the angle ?1 in a non-multipath environment model and a second function which expresses the speed v1 in a multipath environment model are formed, an actual relative speed between the radar device and the target is calculated from a reception signal of the radar wave by using the multipath environment model, and it is determined that the reception signal is derived from a stationary object when a point defined by the ?1 and the actual relative speed is positioned between the first function and the second function.Type: GrantFiled: July 11, 2018Date of Patent: November 3, 2020Assignee: Mitsumi Electric Co., Ltd.Inventor: Yuji Takada
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Patent number: 10641884Abstract: A radar transceiver (100) includes: a transmission-signal forming section (110) that forms an upbeat signal and a downbeat signal from a carrier signal and a chirp signal, using an image rejection circuit; and a received-signal processing section (120) that separates a reflection signal received via a reception antenna (105) into a reflection signal based on the upbeat signal and a reflection signal based on the downbeat signal, using an image rejection circuit.Type: GrantFiled: January 25, 2018Date of Patent: May 5, 2020Assignee: MITSUMI ELECTRIC CO., LTD.Inventor: Yuji Takada
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Patent number: 10457327Abstract: A method of assisting a driver of a vehicle includes obtaining a feature of a road to be traveled by the vehicle with a sensor and/or a GPS system. A parameter is selected to assist a driver of the vehicle in driving a segment of the road based on the feature of the road. The parameter includes information on the location of a boundary along the road and a preferred trajectory to be driven along the road. A controller determines whether a current trajectory of the vehicle while travelling the road is deviating from the preferred trajectory of the vehicle along the road. A feedback operation is provided to assist the driver in guiding the vehicle nearer to the preferred trajectory based on the selected parameter.Type: GrantFiled: September 26, 2014Date of Patent: October 29, 2019Assignees: Nissan North America, Inc., NISSAN MOTOR CO., LTD.Inventors: Yoshiro Takamatsu, Yuji Takada, Yoshinori Kusayanagi, Norimasa Kishi
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Patent number: 10371815Abstract: This radar module is provided with: a transmission antenna; a reception antenna; a signal source for generating a transmission signal; a transmission unit for transmitting a transmission signal towards a target object through the transmission antenna; a reception unit for receiving, through the reception antenna, a reflected signal produced by reflection of the transmission signal from the target object; a signal processing unit for performing signal processing on the basis of a reception signal outputted by the reception unit; and an external interface for outputting information obtained by the signal processing unit. The signal processing unit calculates an average value and a variance value of the received power of the reception signal, and uses the calculated average value and variance value to identify the target object.Type: GrantFiled: March 31, 2015Date of Patent: August 6, 2019Assignee: MITSUMI ELECTRIC CO., LTD.Inventor: Yuji Takada
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Patent number: 10272946Abstract: A method of assisting a driver of a vehicle, the method includes obtaining a location of a road boundary relative to the vehicle using a sensor, selecting, via a controller, a parameter to assist a driver of the vehicle when approaching the location of the road boundary based on a condition, determining, via the controller, based on the location of the road boundary whether the vehicle will be a predetermined distance from the road boundary, and providing a feedback operation to assist the driver in avoiding the road boundary based on the selected parameter.Type: GrantFiled: September 26, 2014Date of Patent: April 30, 2019Assignees: Nissan North America, Inc., NISSAN MOTOR CO., LTD.Inventors: Yoshiro Takamatsu, Yuji Takada, Yoshinori Kusayanagi, Norimasa Kishi
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Publication number: 20190018133Abstract: In an object detection method, a moving speed v0 of a radar device and an angle ?1 defined between a moving direction of the radar device and a reception direction of a radar wave reflected on a target are acquired, a first function which expresses a relative speed v1 between the radar device and the target by the speed v0 and the angle ?1 in a non-multipath environment model and a second function which expresses the speed v1 in a multipath environment model are formed, an actual relative speed between the radar device and the target is calculated from a reception signal of the radar wave by using the multipath environment model, and it is determined that the reception signal is derived from a stationary object when a point defined by the ?1 and the actual relative speed is positioned between the first function and the second function.Type: ApplicationFiled: July 11, 2018Publication date: January 17, 2019Inventor: Yuji TAKADA
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Publication number: 20180360170Abstract: This manufacturing method of a molded surface fastener involves a primary molding step for forming a primary molded body and a secondary molding step for compressing a provisional element of the primary molded body while heating the same. A molding apparatus is provided with a mold member comprising multiple penetration holes and multiple concave portions, whereof each penetration hole communicates to at least one concave portion; in the primary molding step, the molding apparatus is used to form a primary molded body comprising a provisional element having a primary stem portion and a pawl portion is formed from the protruded portion by compressing the provisional element. By this means, it is possible to stably manufacture a molded surface fastener that has an engaging element comprising a pawl portion that projects from the outer peripheral edge of an engaging head portion.Type: ApplicationFiled: August 2, 2016Publication date: December 20, 2018Inventors: Yoshiyuki Fukuhara, Yuji Takada
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Publication number: 20180341012Abstract: A ghost removal method includes steps of detecting, estimating and excluding. In the detecting, a position and a relative speed of a target moving object, and a position of a surrounding stationary object are detected with radio waves. In the estimating, a position and a relative speed of a ghost by the target moving object are estimated based on the detected position and relative speed of the target moving object and the position of the surrounding stationary object. In the excluding, a detected point where the estimated position and the relative speed of the ghost are detected is excluded from a candidate detection point of a moving object which is detected with radio waves.Type: ApplicationFiled: May 24, 2018Publication date: November 29, 2018Inventor: Yuji TAKADA
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Patent number: 10118642Abstract: A method of assisting a driver of a vehicle in driving a road, the method includes determining a location of a road boundary along a segment of a road relative to the vehicle using a sensor, selecting, via a controller, a parameter for the segment of the road, the parameter including a plurality of values corresponding to a plurality of boundary locations along the segment of the road, determining, via the controller, whether the vehicle is approaching the road boundary based on a vehicle trajectory and the location of the plurality of boundary locations, and providing a feedback operation to assist the driver in avoiding the road boundary, the feedback operation based on the selected parameter.Type: GrantFiled: September 26, 2014Date of Patent: November 6, 2018Assignees: Nissan North America, Inc., Nissan Motor Co., Ltd.Inventors: Yoshiro Takamatsu, Yuji Takada, Yoshinori Kusayanagi, Norimasa Kishi
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Publication number: 20180210076Abstract: A radar transceiver (100) includes: a transmission-signal forming section (110) that forms an upbeat signal and a downbeat signal from a carrier signal and a chirp signal, using an image rejection circuit; and a received-signal processing section (120) that separates a reflection signal received via a reception antenna (105) into a reflection signal based on the upbeat signal and a reflection signal based on the downbeat signal, using an image rejection circuit.Type: ApplicationFiled: January 25, 2018Publication date: July 26, 2018Applicant: MITSUMI ELECTRIC CO., LTD.Inventor: Yuji TAKADA
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Publication number: 20180201315Abstract: A method of assisting a driver of a vehicle, the method includes obtaining a location of a road boundary relative to the vehicle using a sensor, selecting, via a controller, a parameter to assist a driver of the vehicle when approaching the location of the road boundary based on a condition, determining, via the controller, based on the location of the road boundary whether the vehicle will be a predetermined distance from the road boundary, and providing a feedback operation to assist the driver in avoiding the road boundary based on the selected parameter.Type: ApplicationFiled: September 26, 2014Publication date: July 19, 2018Applicant: NISSAN MOTOR CO., LTD.Inventors: Yoshiro TAKAMATSU, Yuji TAKADA, Yoshinori KUSAYANAGI, Norimasa KISHI
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Patent number: 9994254Abstract: A method of assisting a driver of a vehicle in driving a road, the method includes obtaining a feature of a road using a sensor, selecting, via a controller, a parameter based on the feature of the road, determining, via a controller, whether the vehicle is approaching a boundary of the road, and providing a feedback operation to assist the driver in avoiding the boundary of the road, the feedback operation based on the selected parameter.Type: GrantFiled: September 26, 2014Date of Patent: June 12, 2018Assignees: NISSAN NORTH AMERICA, INC., NISSAN MOTOR CO., LTD.Inventors: Yoshiro Takamatsu, Yuji Takada, Yoshinori Kusayanagi, Norimasa Kishi
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Publication number: 20170282973Abstract: A method of assisting a driver of a vehicle in driving a road, the method includes obtaining a feature of a road using a sensor, selecting, via a controller, a parameter based on the feature of the road, determining, via a controller, whether the vehicle is approaching a boundary of the road, and providing a feedback operation to assist the driver in avoiding the boundary of the road, the feedback operation based on the selected parameter.Type: ApplicationFiled: September 26, 2014Publication date: October 5, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Yoshiro TAKAMATSU, Yuji TAKADA, Yoshinori KUSAYANAGI, Norimasa KISHI
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Publication number: 20170267286Abstract: A method of assisting a driver of a vehicle includes obtaining a feature of a road to be traveled by the vehicle with a sensor and/or a GPS system. A parameter is selected to assist a driver of the vehicle in driving a segment of the road based on the feature of the road. The parameter includes information on the location of a boundary along the road and a preferred trajectory to be driven along the road. A controller determines whether a current trajectory of the vehicle while travelling the road is deviating from the preferred trajectory of the vehicle along the road. A feedback operation is provided to assist the driver in guiding the vehicle nearer to the preferred trajectory based on the selected parameter.Type: ApplicationFiled: September 26, 2014Publication date: September 21, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Yoshiro TAKAMATSU, Yuji TAKADA, Yoshinori KUSAYANAGI, Norimasa KISHI
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Publication number: 20170267287Abstract: A method of assisting a driver of a vehicle in driving a road, the method includes determining a location of a road boundary along a segment of a road relative to the vehicle using a sensor, selecting, via a controller, a parameter for the segment of the road, the parameter including a plurality of values corresponding to a plurality of boundary locations along the segment of the road, determining, via the controller, whether the vehicle is approaching the road boundary based on a vehicle trajectory and the location of the plurality of boundary locations, and providing a feedback operation to assist the driver in avoiding the road boundary, the feedback operation based on the selected parameter.Type: ApplicationFiled: September 26, 2014Publication date: September 21, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Yoshiro TAKAMATSU, Yuji TAKADA, Yoshinori KUSAYANAGI, Norimasa KISHI
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Publication number: 20170139043Abstract: This radar module is provided with: a transmission antenna; a reception antenna; a signal source for generating a transmission signal; a transmission unit for transmitting a transmission signal towards a target object through the transmission antenna; a reception unit for receiving, through the reception antenna, a reflected signal produced by reflection of the transmission signal from the target object; a signal processing unit for performing signal processing on the basis of a reception signal outputted by the reception unit; and an external interface for outputting information obtained by the signal processing unit. The signal processing unit calculates an average value and a variance value of the received power of the reception signal, and uses the calculated average value and variance value to identify the target object.Type: ApplicationFiled: March 31, 2015Publication date: May 18, 2017Applicant: MITSUMI ELECTRIC CO., LTD.Inventor: Yuji TAKADA
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Patent number: 9586593Abstract: A method of assisting a driver of a vehicle in driving a road, the method includes determining a location of a road boundary relative to the vehicle using a sensor, selecting, via a controller, a parameter to assist a driver of the vehicle at the location of the road boundary, updating the parameter based on a previous operation of the vehicle, determining, via the controller, whether the vehicle is approaching the road boundary based on a vehicle trajectory and the location of a road boundary, and providing a feedback operation to assist the driver in avoiding the road boundary, the feedback operation based on the selected parameter.Type: GrantFiled: September 25, 2014Date of Patent: March 7, 2017Assignees: NISSAN NORTH AMERICA, INC., NISSAN MOTOR CO., LTDInventors: Yoshiro Takamatsu, Yuji Takada, Yoshinori Kusayanagi, Norimasa Kishi
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Patent number: 9433262Abstract: A molding hook and loop fastener includes a plurality of surface fastener portions and a coupling member that is formed of a resilient body and connects the surface fastener portions. The coupling member includes a pair of vertical wall coupling portions which is continuously disposed along a longitudinal direction on both sides in between an engaging element area and which connects the surface fastener portions. With this configuration, when the molding hook and loop fastener is integrally molded to a cushion body, it is possible to prevent a resin material from penetrating into the engaging element area of the surface fastener portion and to stably secure a desired fastening strength at the engaging element area.Type: GrantFiled: July 5, 2011Date of Patent: September 6, 2016Assignee: YKK CorporationInventors: Kenji Okuda, Shinichi Imai, Mineto Terada, Yuji Takada