Patents by Inventor Yuki KAJIWARA
Yuki KAJIWARA 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: 11562175Abstract: An abnormality detection apparatus including a feature extraction circuit configured to extract a feature point and a feature value of a first image, and a feature point and a feature value of a second image, a flow calculation circuit configured to calculate, based on the feature value of the first image, a first abnormality detection circuit configured to detect an abnormality in the first image based on a first optical flow, and to detect an abnormality in the second image based on a third optical flow, and a second abnormality detection circuit configured to detect an abnormality in the first or second image based on a result of a comparison between the second optical flow and a fourth optical flow.Type: GrantFiled: May 26, 2020Date of Patent: January 24, 2023Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Yuki Kajiwara, Kosuke Miyagawa, Masaki Nishibu, Kentaro Sasahara
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Patent number: 10974719Abstract: A mobile object control system has an SfM unit detecting distance to an object imaged by a monocular camera by using the SfM algorithm, a first-stop-position output unit outputting a first stop position, a second-stop-position calculating unit calculating a second stop position closer than the first stop position, and a control unit controlling travel of a mobile object. The control unit controls the mobile object so as to stop at the second stop position. When a predetermined starting condition is satisfied, the control unit controls the mobile object so as to start. The SfM unit detects the distance to an object by using an image captured by the monocular camera after the mobile object starts. When a result of detection of the distance of the object by the SfM unit is obtained, the control unit uses the detection result for control of the travel.Type: GrantFiled: July 10, 2018Date of Patent: April 13, 2021Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Kazuaki Terashima, Yuki Kajiwara
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Publication number: 20200285905Abstract: An abnormality detection apparatus including a feature extraction circuit configured to extract a feature point and a feature value of a first image, and a feature point and a feature value of a second image, a flow calculation circuit configured to calculate, based on the feature value of the first image, a first abnormality detection circuit configured to detect an abnormality in the first image based on a first optical flow, and to detect an abnormality in the second image based on a third optical flow, and a second abnormality detection circuit configured to detect an abnormality in the first or second image based on a result of a comparison between the second optical flow and a fourth optical flow.Type: ApplicationFiled: May 26, 2020Publication date: September 10, 2020Inventors: Yuki KAJIWARA, Kosuke Miyagawa, Masaki Nishibu, Kentaro Sasahara
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Patent number: 10679102Abstract: An abnormality detection apparatus includes a feature extraction unit configured to extract an image feature according to a common algorithm, a flow calculation unit, a first abnormality detection unit, and a second abnormality detection unit. An extraction range for the image feature is composed of a predetermined first partial area in a first image, a predetermined second partial area in a second image, and areas near places in the first and second images predicted as destinations of the feature point. The first abnormality detection unit detects an abnormality in the first (second) image based on an optical flow for a feature point in the first (second) partial area. The second abnormality detection unit detects an abnormality by using a feature point in a first overlapped extraction area defined in a first overlapped area and a feature point in a second overlapped extraction area defined in a second overlapped area.Type: GrantFiled: May 9, 2018Date of Patent: June 9, 2020Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Yuki Kajiwara, Kosuke Miyagawa, Masaki Nishibu, Kentaro Sasahara
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Patent number: 10654427Abstract: A semiconductor device for controlling an apparatus includes a first memory that stores data indicating, in association with each other, a factor that occurs with respect to the apparatus and control contents of the apparatus to be performed with respect to the factor; a second memory, and a processor executing program instructions and configured to estimate the factor and a required time until encountering the factor based on a result of an observation of a periphery of the apparatus, and decide control contents of the apparatus based on the estimated factor and the data, to control the apparatus. The first memory stores data which a required time until encountering the factor is greater than a threshold, and the second memory stores data which a required time until encountering the factor is equal to or less than the threshold.Type: GrantFiled: November 29, 2017Date of Patent: May 19, 2020Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Yuki Kajiwara
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Patent number: 10295663Abstract: A semiconductor device includes a data obtaining unit that obtains a plurality of data items each indicating a result of observation from a plurality of radars for observing surroundings, converts the plurality of data items into data items in a polar coordinate format, and stores them in a storage unit, an axial position converting unit that performs conversion on the plurality of data items in the polar coordinate data format stored in the storage unit so that their axial positions will be the same, generates the plurality of data items on which axial position conversion has been performed, and stores them in the storage unit, a data superimposing unit that superimposes the plurality of data items on which the axial position conversion has been performed to generate superimposed data, and a coordinate converting unit that converts the superimposed data into data in a Cartesian coordinate format.Type: GrantFiled: May 12, 2016Date of Patent: May 21, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Yuki Kajiwara
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Patent number: 10229472Abstract: Image processing is made efficient. An image processing apparatus according to an embodiment includes a line memory, a plurality of pipelines, and a line memory control circuit that controls data reading from the line memory to processing units. The processing unit includes a first operator that performs a first arithmetic operation, a second operator which performs a second arithmetic operation based on first intermediate data based on an arithmetic operation result of the first operator and which calculates second intermediate data according to the first intermediate data of when peripheral pixels are sequentially changed, third operators which perform a third arithmetic operation based on the first intermediate data and which calculate third intermediate data according to the first intermediate data of when the peripheral pixels are sequentially changed, and delay elements that delay the third intermediate data.Type: GrantFiled: February 2, 2017Date of Patent: March 12, 2019Assignee: Renesas Electronics CorporationInventors: Kazuaki Terashima, Yuki Kajiwara
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Publication number: 20190039607Abstract: A mobile object control system has an SfM unit detecting distance to an object imaged by a monocular camera by using the SfM algorithm, a first-stop-position output unit outputting a first stop position, a second-stop-position calculating unit calculating a second stop position closer than the first stop position, and a control unit controlling travel of a mobile object. The control unit controls the mobile object so as to stop at the second stop position. When a predetermined starting condition is satisfied, the control unit controls the mobile object so as to start. The SfM unit detects the distance to an object by using an image captured by the monocular camera after the mobile object starts. When a result of detection of the distance of the object by the SfM unit is obtained, the control unit uses the detection result for control of the travel.Type: ApplicationFiled: July 10, 2018Publication date: February 7, 2019Inventors: Kazuaki TERASHIMA, Yuki KAJIWARA
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Publication number: 20180365524Abstract: An abnormality detection apparatus incudes a feature extraction unit configured to extract an image feature according to a common algorithm, a flow calculation unit, a first abnormality detection unit, and a second abnormality detection unit. An extraction range for the image feature is composed of a predetermined first partial area in a first image, a predetermined second partial area in a second image, and areas near places in the first and second images predicted as destinations of the feature point. The first abnormality detection unit detects an abnormality in the first (second) image based on an optical flow for a feature point in the first (second) partial area. The second abnormality detection unit detects an abnormality by using a feature point in a first overlapped extraction area defined in a first overlapped area and a feature point in a second overlapped extraction area defined in a second overlapped area.Type: ApplicationFiled: May 9, 2018Publication date: December 20, 2018Inventors: Yuki Kajiwara, Kosuke Miyagawa, Masaki Nishibu, Kentaro Sasahara
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Publication number: 20180079376Abstract: A semiconductor device for controlling an apparatus includes a first memory that stores data indicating, in association with each other, a factor that occurs with respect to the apparatus and control contents of the apparatus to be performed with respect to the factor; a second memory, and a processor executing program instructions and configured to estimate the factor and a required time until encountering the factor based on a result of an observation of a periphery of the apparatus, and decide control contents of the apparatus based on the estimated factor and the data, to control the apparatus. The first memory stores data which a required time until encountering the factor is greater than a threshold, and the second memory stores data which a required time until encountering the factor is equal to or less than the threshold.Type: ApplicationFiled: November 29, 2017Publication date: March 22, 2018Inventor: Yuki KAJIWARA
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Patent number: 9834159Abstract: An object of the present invention is to control a vehicle with less delay. A control system 100 according to the present invention includes: an estimating unit 103 that estimates a factor and a required time until encountering the factor based on a result of an observation of a periphery of a vehicle; and a deciding unit 104 that decides control contents of the vehicle based on data stored in a first storage unit 101 when the required time is longer than a threshold and that decides control contents of the vehicle based on data stored in a second storage unit 102 which can be accessed at a higher speed than the first storage unit 101 when the required time is equal to or shorter than the threshold.Type: GrantFiled: July 6, 2015Date of Patent: December 5, 2017Assignee: Renesas Electronics CorporationInventor: Yuki Kajiwara
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Patent number: 9790596Abstract: A gas nozzle according to an embodiment of the present invention includes a columnar main body including a ceramic sintered body having a through hole through which gas flows. An outlet of the through hole for the gas is formed on one end face of the main body. An inner wall of the through hole has a first region located in a vicinity of the outlet, and a second region located further inward of the main body than the first region. The first region and the second region each include a sintered surface of the ceramic sintered body. Average crystal grain size in the first region is larger than average crystal grain size in the second region.Type: GrantFiled: December 21, 2013Date of Patent: October 17, 2017Assignee: KYOCERA CORPORATIONInventor: Yuki Kajiwara
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Publication number: 20170278214Abstract: Image processing is made efficient. An image processing apparatus according to an embodiment includes a line memory, a plurality of pipelines, and a line memory control circuit that controls data reading from the line memory to processing units. The processing unit includes a first operator that performs a first arithmetic operation, a second operator which performs a second arithmetic operation based on first intermediate data based on an arithmetic operation result of the first operator and which calculates second intermediate data according to the first intermediate data of when peripheral pixels are sequentially changed, third operators which perform a third arithmetic operation based on the first intermediate data and which calculate third intermediate data according to the first intermediate data of when the peripheral pixels are sequentially changed, and delay elements that delay the third intermediate data.Type: ApplicationFiled: February 2, 2017Publication date: September 28, 2017Inventors: Kazuaki TERASHIMA, Yuki KAJIWARA
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Publication number: 20170010349Abstract: A semiconductor device includes a data obtaining unit that obtains a plurality of data items each indicating a result of observation from a plurality of radars for observing surroundings, converts the plurality of data items into data items in a polar coordinate format, and stores them in a storage unit, an axial position converting unit that performs conversion on the plurality of data items in the polar coordinate data format stored in the storage unit so that their axial positions will be the same, generates the plurality of data items on which axial position conversion has been performed, and stores them in the storage unit, a data superimposing unit that superimposes the plurality of data items on which the axial position conversion has been performed to generate superimposed data, and a coordinate converting unit that converts the superimposed data into data in a Cartesian coordinate format.Type: ApplicationFiled: May 12, 2016Publication date: January 12, 2017Applicant: Renesas Electronics CorporationInventor: Yuki KAJIWARA
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Publication number: 20160023663Abstract: An object of the present invention is to control a vehicle with less delay. A control system 100 according to the present invention includes: an estimating unit 103 that estimates a factor and a required time until encountering the factor based on a result of an observation of a periphery of a vehicle; and a deciding unit 104 that decides control contents of the vehicle based on data stored in a first storage unit 101 when the required time is longer than a threshold and that decides control contents of the vehicle based on data stored in a second storage unit 102 which can be accessed at a higher speed than the first storage unit 101 when the required time is equal to or shorter than the threshold.Type: ApplicationFiled: July 6, 2015Publication date: January 28, 2016Inventor: Yuki KAJIWARA