Patents by Inventor Yuuki Nakashima
Yuuki Nakashima 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: 11408754Abstract: A rotation angle detection apparatus includes a driving gear, two driven gears, two sensors, and an arithmetic circuit. The two driven gears have different numbers of teeth and each are in mesh with the driving gear. The arithmetic circuit is configured to compute a rotation angle of the driving gear based on the rotation angles of the two driven gears, detected through the two sensors. The arithmetic circuit is configured to, when a relationship between the rotation angles of the two driven gears, detected through the two sensors, is different from the relationship when the rotation angle of the driving gear, computed by the arithmetic circuit, is normal, detect an abnormality in the rotation angle of the driving gear, computed by the arithmetic circuit.Type: GrantFiled: April 29, 2020Date of Patent: August 9, 2022Assignee: JTEKT CORPORATIONInventors: Shouta Zouza, Yuuki Nakashima, Yuji Fujita, Toshihiro Takahashi, Xavier Palandre
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Patent number: 11196364Abstract: A motor control device is configured to control a motor as a dynamic force source depending on a position of a rotation detection object that rotates while interlocking with the motor, the motor and the rotation detection object being included in a mechanical apparatus including a plurality of constituent elements that interlock with each other. The motor control device includes a computation circuit configured to compute an absolute rotation angle of the rotation detection object, using a relative rotation angle of a first constituent element of the mechanical apparatus that is detected through a relative angle sensor provided in the mechanical apparatus, and a rotation number conversion value resulting from converting an absolute rotation angle of a second constituent element of the mechanical apparatus that is detected through an absolute angle sensor provided in the mechanical apparatus, into a rotation number of the first constituent element.Type: GrantFiled: May 13, 2020Date of Patent: December 7, 2021Assignee: JTEKT CORPORATIONInventors: Shouta Zouza, Yuuki Nakashima, Yuji Fujita, Toshihiro Takahashi, Xavier Palandre
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Publication number: 20200361524Abstract: A motor control device is configured to control a motor as a dynamic force source depending on a position of a rotation detection object that rotates while interlocking with the motor, the motor and the rotation detection object being included in a mechanical apparatus including a plurality of constituent elements that interlock with each other. The motor control device includes a computation circuit configured to compute an absolute rotation angle of the rotation detection object, using a relative rotation angle of a first constituent element of the mechanical apparatus that is detected through a relative angle sensor provided in the mechanical apparatus, and a rotation number conversion value resulting from converting an absolute rotation angle of a second constituent element of the mechanical apparatus that is detected through an absolute angle sensor provided in the mechanical apparatus, into a rotation number of the first constituent element.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Applicant: JTEKT CORPORATIONInventors: Shouta ZOUZA, Yuuki NAKASHIMA, Yuji FUJITA, Toshihiro TAKAHASHI, Xavier PALANDRE
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Publication number: 20200363237Abstract: A rotation angle detection apparatus includes a driving gear, two driven gears, two sensors, and an arithmetic circuit. The two driven gears have different numbers of teeth and each are in mesh with the driving gear. The arithmetic circuit is configured to compute a rotation angle of the driving gear based on the rotation angles of the two driven gears, detected through the two sensors. The arithmetic circuit is configured to, when a relationship between the rotation angles of the two driven gears, detected through the two sensors, is different from the relationship when the rotation angle of the driving gear, computed by the arithmetic circuit, is normal, detect an abnormality in the rotation angle of the driving gear, computed by the arithmetic circuit.Type: ApplicationFiled: April 29, 2020Publication date: November 19, 2020Applicant: JTEKT CORPORATIONInventors: Shouta ZOUZA, Yuuki NAKASHIMA, Yuji FUJITA, Toshihiro TAKAHASHI, Xavier PALANDRE
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Patent number: 10363903Abstract: In a vehicle keyless system 1, an on-vehicle device 10 receives a command signal transmitted from a portable device 2 and controls a predetermined on-vehicle component. The portable device 2 transmits, as a main signal MS, a command signal including ID information unique to the portable device 2, and then transmits a sub signal LP subsequent to the main signal MS. The on-vehicle device 10 transitions to a sleep state when the command signal transmitted as the main signal MS is received and the ID information included in the received main signal MS does not match with ID information stored in an EEPROM 14 as ID information unique to the portable device 2 to which the on-vehicle device 10 is available.Type: GrantFiled: March 3, 2017Date of Patent: July 30, 2019Assignee: CALSONIC KANSEI CORPORATIONInventor: Yuuki Nakashima
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Patent number: 10207675Abstract: At acquisition of a first unit command signal RC(1) of which storage is completed and in a case that the ring buffer stores a part of a second unit command signal RC(2), the CPU acquires the first unit command signal and the part of the second unit command signal upon receiving a first interrupt signal BQ(1), and then separates the first unit command signal and the part of the second unit command signal from each other. When having received a second interrupt signal BQ(2), the CPU acquires the remaining of the second unit command signal, and combines the remaining of the second unit command signal and the part of the second unit command signal. Accordingly, the second unit command signal once separated is acquired as a signal having all data completed.Type: GrantFiled: March 3, 2017Date of Patent: February 19, 2019Assignee: CALSONIC KANSEI CORPORATIONInventor: Yuuki Nakashima
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Publication number: 20190031142Abstract: In a vehicle keyless system 1, an on-vehicle device 10 receives a command signal transmitted from a portable device 2 and controls a predetermined on-vehicle component. The portable device 2 transmits, as a main signal MS, a command signal including ID information unique to the portable device 2, and then transmits a sub signal LP subsequent to the main signal MS. The on-vehicle device 10 transitions to a sleep state when the command signal transmitted as the main signal MS is received and the ID information included in the received main signal MS does not match with ID information stored in an EEPROM 14 as ID information unique to the portable device 2 to which the on-vehicle device 10 is available.Type: ApplicationFiled: March 3, 2017Publication date: January 31, 2019Inventor: Yuuki NAKASHIMA
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Publication number: 20190016299Abstract: At acquisition of a first unit command signal RC(1) of which storage is completed and in a case that the ring buffer stores a part of a second unit command signal RC(2), the CPU acquires the first unit command signal and the part of the second unit command signal upon receiving a first interrupt signal BQ(1), and then separates the first unit command signal and the part of the second unit command signal from each other. When having received a second interrupt signal BQ(2), the CPU acquires the remaining of the second unit command signal, and combines the remaining of the second unit command signal and the part of the second unit command signal. Accordingly, the second unit command signal once separated is acquired as a signal having all data completed.Type: ApplicationFiled: March 3, 2017Publication date: January 17, 2019Inventor: Yuuki NAKASHIMA
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Patent number: 8908921Abstract: In an object detection method and an object detector 10 using the method, HOG feature (A) of a target image is computed, and existence of a target object P in the image is judged based on HOG feature (B) pre-computed for a sample image 20 having the object P pictured therein. A classifier 18 to judge the existence of the object P in the image is constructed based on a feature pattern representing the existence of the object P obtained by calculating a plurality of the HOG features (B) having different bin numbers for each of a plurality of local areas (cells) 19 in the image 20. The existence of the object P in the image is judged by the classifier 18 based on a plurality of the HOG features (A) having different bin numbers computed for each of the local areas 19 in the image.Type: GrantFiled: November 28, 2011Date of Patent: December 9, 2014Assignee: Kyushu Institute of TechnologyInventors: Seiji Ishikawa, Joo Kooi Tan, Yuuki Nakashima, Takashi Morie
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Publication number: 20130251206Abstract: In an object detection method and an object detector 10 using the method, HOG feature (A) of a target image is computed, and existence of a target object P in the image is judged based on HOG feature (B) pre-computed for a sample image 20 having the object P pictured therein. A classifier 18 to judge the existence of the object P in the image is constructed based on a feature pattern representing the existence of the object P obtained by calculating a plurality of the HOG features (B) having different bin numbers for each of a plurality of local areas (cells) 19 in the image 20. The existence of the object P in the image is judged by the classifier 18 based on a plurality of the HOG features (A) having different bin numbers computed for each of the local areas 19 in the image.Type: ApplicationFiled: November 28, 2011Publication date: September 26, 2013Applicant: KYUSHU INSTITUTE OF TECHNOLOGYInventors: Seiji Ishikawa, Joo Kooi Tan, Yuuki Nakashima, Takashi Morie