Patents by Inventor Masahito Sakai
Masahito Sakai 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: 20240104752Abstract: In the present invention, master image data is used to improve precision for correcting target image data. A generation unit (11) performs an affine transformation on the target image data, thereby generating a transformation image group including a plurality of transformation image data; a calculation unit (12) calculates a correlation value between transformation image data included in the transformation image group, and preregistered master image data; a selection unit (13) selects the transformation image data having the greatest correlation value from among the transformation image data included in the transformation image group; and a correction unit (14) corrects the selected transformation image data on the basis of the positional displacement between an object shown in the master image data and the object shown in the selected transformation image data.Type: ApplicationFiled: November 24, 2021Publication date: March 28, 2024Applicant: NEC CorporationInventor: Masahito Sakai
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Publication number: 20240097512Abstract: A rotor includes: a rotor core having a plurality of magnet-receiving holes formed in a folded shape that is convex radially inward; and a plurality of permanent magnets embedded respectively in the magnet-receiving holes of the rotor core. The rotor core includes a plurality of core sheets that are laminated in an axial direction. Each of the core sheets has a plurality of through-holes for magnets. The magnet-receiving holes of the rotor core are constituted of those of the through-holes of the axially-laminated core sheets which overlap each other in the axial direction. Interior surfaces of the magnet-receiving holes have irregular portions each of which is formed by a difference in position between peripheral edges of the axially-overlapping through-holes, and non-irregular portions where none of the irregular portions are formed. The permanent magnets have engaging portions located respectively in recesses of the irregular portions.Type: ApplicationFiled: December 4, 2023Publication date: March 21, 2024Applicant: DENSO CORPORATIONInventor: Masahito SAKAI
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Patent number: 11927528Abstract: An optical measuring device which measures absorbance of a measuring object at a plurality of wavelengths, the optical measuring device comprising: a light source device; and an optical measuring part which irradiates the measuring object with light from the light source device and performs optical measurement of the measuring object based on light from the measuring object, wherein the light source device has a first light source, a second light source, and a light source control part which drives the first light source and the second light source, the light source control part performs heating and light emitting drive of the first light source, and drives the second light source, and the light source device irradiates the measuring object with combined light of light from the first light source and light diffused and reflected on a surface of the filament.Type: GrantFiled: May 11, 2020Date of Patent: March 12, 2024Assignee: Kahoku Lighting Solutions CorporationInventors: Masahito Kagaya, Motohiro Sakai
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Publication number: 20230368416Abstract: A frame of interest to be subjected to pose detection is acquired from a plurality of time series frames, a joint point of a subject reflected in the frame of interest is detected. It is determined that a joint point to be detected in the frame of interest cannot be detected when the detected joint point is not the joint point to be detected. A joint point associated to the joint point to be detected with respect to each of a plurality of frames other than the frame of interest is searched for among the plurality of time-series frames when the joint point to be detected cannot be detected. The joint point to be detected is interpolated according to a search result.Type: ApplicationFiled: April 28, 2023Publication date: November 16, 2023Applicant: NEC CorporationInventor: Masahito Sakai
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Patent number: 11815161Abstract: A speed reducer including: a first gear; an eccentric shaft joined to the first gear, the eccentric shaft has first and second supporting portions offset in a rotation radial direction with respect to a first gear rotation shaft; a fixed gear at an eccentric shaft radial direction outer side, and whose rotation is restricted; a transmitting gear supported at the first supporting portion and meshes with the fixed gear, and the transmitting gear revolves around the first gear rotation shaft and rotates around its own axis; an outputting portion rotating due to the transmitting gear revolving and rotating around its own axis; and a locking gear supported at the second supporting portion and meshes with the fixed gear, and the locking gear revolves around the first gear rotation shaft and rotates around its own axis, and rotation of the outputting portion is restricted.Type: GrantFiled: July 8, 2019Date of Patent: November 14, 2023Assignee: DENSO CORPORATIONInventors: Masahito Sakai, Kazuki Maruo, Tomoki Yamashita, Fumihiro Shimizu, Hiroyuki Okada
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Publication number: 20230299628Abstract: A rotor includes: a rotor core including a plurality of core sheets that are laminated together and having a plurality of magnet-receiving holes formed in a folded shape; and a plurality of permanent magnets embedded respectively in the magnet-receiving holes. Each of the core sheets has a plurality of first through-holes and a plurality of second through-holes. Each of the first through-holes has a connection portion formed at an intermediate position in the folded shape of a corresponding one of the magnet-receiving holes to connect inner peripheral edges of the first through-hole that face each other in a width direction of the first through-hole. Each of the second through-holes has no connection portion. The core sheets are identical in configuration to each other. The core sheets are laminated so that each of the magnet-receiving holes is constituted of a mixture of the first and second through-holes of the core sheets.Type: ApplicationFiled: May 24, 2023Publication date: September 21, 2023Applicant: DENSO CORPORATIONInventors: Takahiro NAKAYAMA, Ritsuro HIRAMATSU, Toshihiro UCHIDA, Masahito SAKAI
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Publication number: 20230081857Abstract: A speed reducer-equipped motor of the present disclosure includes a housing to which a motor is fixed and that has a speed reducer housing recess, and a helical gear and a locking gear that are accommodated in the speed reducer housing recess. A spring is provided between the helical gear and the locking gear, and reduces wobbling of the helical gear, the locking gear, and the like in the speed reducer housing recess.Type: ApplicationFiled: November 21, 2022Publication date: March 16, 2023Applicant: DENSO CORPORATIONInventors: Masahito SAKAI, Kazuki MARUO
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Patent number: 11560934Abstract: A speed reducer includes a helical gear, an eccentric shaft and a slider plate. The speed reducer also includes a transmission gear and an output gear body. The transmission gear is supported at a first support part, transmission gear spinning is restricted by engagement with the slider plate, and the transmission gear revolves by the helical gear rotating with the eccentric shaft. The output gear body rotates by the transmission gear revolving. The transmission gear includes a pair of restricting protrusions protruding toward the slider plate side. The restricting protrusions have engaging surfaces that touch the slider plate wherein the engaging surfaces oppose the slider plate in a radial direction of the transmission gear. Surfaces at opposite sides of the restricting protrusions from the slider plate are formed, as seen in the axis direction of the transmission gear, to be convex to the opposite sides thereof from the slider plate.Type: GrantFiled: September 1, 2020Date of Patent: January 24, 2023Assignee: DENSO CORPORATIONInventors: Kazuki Maruo, Masahito Sakai, Fumihiro Shimizu
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Patent number: 11460095Abstract: A gear reducer has a helical gear, an eccentric shaft that is joined to the helical gear and has a first supporting portion that is offset in a rotation radial direction with respect to a rotation shaft of the helical gear, and a slider plate that is disposed at a radial direction outer side of the eccentric shaft. Further, the gear reducer has a transmitting gear that is supported at a first supporting portion, and whose rotation around its own axis is restricted due to the transmitting gear being engaged with the slider plate, and that revolves due to the helical gear rotating together with the eccentric shaft, and has an output gear body that rotates due to the transmitting gear revolving. The transmitting gear has a pair of restricting projections that project-out toward the slider plate side, and the slider plate is disposed between the pair of restricting projections.Type: GrantFiled: December 27, 2019Date of Patent: October 4, 2022Assignee: DENSO CORPORATIONInventors: Hiroyuki Okada, Masahito Sakai, Kazuki Maruo, Fumihiro Shimizu, Tomoki Yamashita
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Patent number: 11297222Abstract: An image capture device includes: an image capture parameter determination unit configured to determine an exposure time when an image of a display device on which a display character is formed by a plurality of segment light emitters that flash on and off asynchronously at predetermined intervals is captured; a captured image acquisition unit configured to, in accordance with a number of captured images and image capture interval determined on the basis of the exposure time and a formation required period that is required for the display device to form the display character by sequentially turning on any one of the plurality of segment light emitters, acquire the determined number of captured images generated by capturing the image of the display device; and a composition unit configured to generate a composite image obtained by compositing the determined number of captured images.Type: GrantFiled: February 19, 2019Date of Patent: April 5, 2022Assignee: NEC CORPORATIONInventor: Masahito Sakai
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Publication number: 20220099161Abstract: A speed reducer includes a helical gear, an eccentric shaft and a slider plate. The speed reducer also includes a transmission gear and an output gear body. The transmission gear is supported at a first support part, transmission gear spinning is restricted by engagement with the slider plate, and the transmission gear revolves by the helical gear rotating with the eccentric shaft. The output gear body rotates by the transmission gear revolving. The transmission gear includes a pair of restricting protrusions protruding toward the slider plate side. The restricting protrusions have engaging surfaces that touch the slider plate wherein the engaging surfaces oppose the slider plate in a radial direction of the transmission gear. Surfaces at opposite sides of the restricting protrusions from the slider plate are formed, as seen in the axis direction of the transmission gear, to be convex to the opposite sides thereof from the slider plate.Type: ApplicationFiled: September 1, 2020Publication date: March 31, 2022Applicant: DENSO CORPORATIONInventors: Kazuki MARUO, Masahito SAKAI, Fumihiro SHIMIZU
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Publication number: 20220051374Abstract: An image processing device performs projection conversion that makes an image captured of an object to be recognized closer to a normal image captured from front of the object to be recognized based on a correlation between: a pre-specified plurality of feature ranges dispersed within a range of the object to be recognized; and a plurality of feature ranges designated based on the dispersion in the image.Type: ApplicationFiled: February 26, 2020Publication date: February 17, 2022Applicants: NEC CORPORATION, Central Research Institute of Electric Power IndustryInventors: Masahito SAKAI, Norihiko ITOH
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Publication number: 20220042580Abstract: A gear reducer has a helical gear, an eccentric shaft that is joined to the helical gear and has a first supporting portion that is offset in a rotation radial direction with respect to a rotation shaft of the helical gear, and a slider plate that is disposed at a radial direction outer side of the eccentric shaft. Further, the gear reducer has a transmitting gear that is supported at a first supporting portion, and whose rotation around its own axis is restricted due to the transmitting gear being engaged with the slider plate, and that revolves due to the helical gear rotating together with the eccentric shaft, and has an output gear body that rotates due to the transmitting gear revolving. The transmitting gear has a pair of restricting projections that project-out toward the slider plate side, and the slider plate is disposed between the pair of restricting projections.Type: ApplicationFiled: December 27, 2019Publication date: February 10, 2022Applicant: DENSO CORPORATIONInventors: Hiroyuki OKADA, Masahito SAKAI, Kazuki MARUO, Fumihiro SHIMIZU, Tomoki YAMASHITA
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Publication number: 20210324942Abstract: A speed reducer including: a first gear; an eccentric shaft joined to the first gear, the eccentric shaft has first and second supporting portions offset in a rotation radial direction with respect to a first gear rotation shaft; a fixed gear at an eccentric shaft radial direction outer side, and whose rotation is restricted; a transmitting gear supported at the first supporting portion and meshes with the fixed gear, and the transmitting gear revolves around the first gear rotation shaft and rotates around its own axis; an outputting portion rotating due to the transmitting gear revolving and rotating around its own axis; and a locking gear supported at the second supporting portion and meshes with the fixed gear, and the locking gear revolves around the first gear rotation shaft and rotates around its own axis, and rotation of the outputting portion is restricted.Type: ApplicationFiled: July 8, 2019Publication date: October 21, 2021Applicant: DENSO CORPORATIONInventors: Masahito SAKAI, Kazuki MARUO, Tomoki YAMASHITA, Fumihiro SHIMIZU, Hiroyuki OKADA
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Publication number: 20210303902Abstract: An image processing device includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: calculate a feature amount of each of feature amount calculation ranges of a plurality of subdivisions set in a processing target range of a captured image obtained by capturing an image of a recognition object; and specify a plurality of feature amount calculation ranges capable of constituting vertices of a polygon among the feature amount calculation ranges as feature ranges based on the feature amount.Type: ApplicationFiled: March 17, 2021Publication date: September 30, 2021Applicant: NEC CorporationInventor: Masahito SAKAI
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Publication number: 20210084215Abstract: An image capture device includes: an image capture parameter determination unit configured to determine an exposure time when an image of a display device on which a display character is formed by a plurality of segment light emitters that flash on an off asynchronously at predetermined intervals is captured; a captured image acquisition unit configured to, in accordance with a number of captured images and image capture interval determined on the basis of the exposure time and a formation required period that is required for the display device to form the display character by sequentially turning on any one of the plurality of segment light emitters, acquire the determined number of captured images generated by capturing the image of the display device; and a composition unit configured to generate a composite image obtained by compositing the determined number of captured images.Type: ApplicationFiled: February 19, 2019Publication date: March 18, 2021Applicant: NEC CORPORATIONInventor: Masahito SAKAI
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Publication number: 20210065212Abstract: A date generation apparatus 2000 acquires the date information 20 regarding the target product 10 and the rule condition indicating the condition regarding the generation rule 40. The generation rule 40 is a rule for generating a character string 30 to be attached to the target product 10 from the date information 20. The date generation apparatus 2000 acquires the generation rule 40 corresponding to the rule condition. Then, the date generation apparatus 2000 uses the generation rule 40 to generate the character string 30 from the date information 20.Type: ApplicationFiled: August 25, 2020Publication date: March 4, 2021Applicant: NEC CorporationInventors: Kensuke MATSUKI, Masahito SAKAI
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Patent number: 10868933Abstract: An image processing apparatus includes a request processing part and a determination part. The request processing part processes a verification request for image data from a terminal. The determination part determines whether or not the image data for which verification has been requested is restricted image data whose duplication and storage have been restricted. The request processing part instructs an apparatus that stores the image data for which the verification has been requested to delete the image data for which the verification has been requested when the image data for which the verification has been requested is the restricted image data.Type: GrantFiled: March 13, 2018Date of Patent: December 15, 2020Assignee: NEC CORPORATIONInventor: Masahito Sakai
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Publication number: 20200068084Abstract: An image processing apparatus includes a request processing part and a determination part. The request processing part processes a verification request for image data from a terminal. The determination part determines whether or not the image data for which verification has been requested is restricted image data whose duplication and storage have been restricted. The request processing part instructs an apparatus that stores the image data for which the verification has been requested to delete the image data for which the verification has been requested when the image data for which the verification has been requested is the restricted image data.Type: ApplicationFiled: March 13, 2018Publication date: February 27, 2020Applicant: NEC CORPORATIONInventor: Masahito SAKAI
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Patent number: 8824585Abstract: Provided is a communication apparatus which calculates a CQI indicating reception quality of a reception signal in a receiver and feeds back the CQI to a transmitter, the CQI containing information obtained by averaging SNRs of a plurality of subbands, which are generated by dividing a reception band into a predetermined number, in the reception band, the communication apparatus including a CQI/PMI/RI estimation unit directly uses an initial value in a predetermined approximation method as an approximation calculation result obtained by the predetermined approximation method to thereby simplify the calculation, when the predetermined approximation method is used for calculation in the averaging in place of root calculation and when values of the SNRs are high.Type: GrantFiled: November 27, 2009Date of Patent: September 2, 2014Assignees: NEC Corporation, NTT DoCoMo, Inc.Inventor: Masahito Sakai