Patents by Inventor Tomonori FUKUSHIMA
Tomonori FUKUSHIMA 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: 11994624Abstract: A photodetector includes a plurality of cells each configured to detect light and including: a light receiving element configured to output an electrical signal upon receipt of the light, a resistor connected to the light receiving element, and first and second switches connected to the resister. Either the first switch or the second switch is turned on according to a selection signal. The photodetector further includes a first output terminal connected to the first switch of each of the cells and through which a first output signal is output based on the electrical signal that has been output from the first switch, and a second output terminal connected to the second switch of each of the cells and through which a second output signal is output based on the electrical signal that has been output from the second switch.Type: GrantFiled: March 13, 2023Date of Patent: May 28, 2024Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Kubota, Nobu Matsumoto, Tomonori Fukushima
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Patent number: 11988745Abstract: According to an embodiment, a distance measuring device measures a distance to the measured object base on light scattered on the measured object is detected. The distance measuring device includes an optical detector and a measurer. The optical detector detects the scattered light. The measurer has a sampler to sample a signal corresponding to an output signal of the optical detector every time when the light is emitted at a plurality of sampling time points and a storage to accumulate sampling values and store an accumulation value at each sampling time point. The measurer measures the distance based on a plurality of accumulation values at the sampling time points.Type: GrantFiled: February 27, 2020Date of Patent: May 21, 2024Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Kubota, Tomonori Fukushima, Nobu Matsumoto
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Publication number: 20230228854Abstract: A photodetector includes a plurality of cells each configured to detect light and including: a light receiving element configured to output an electrical signal upon receipt of the light, a resistor connected to the light receiving element, and first and second switches connected to the resister. Either the first switch or the second switch is turned on according to a selection signal. The photodetector further includes a first output terminal connected to the first switch of each of the cells and through which a first output signal is output based on the electrical signal that has been output from the first switch, and a second output terminal connected to the second switch of each of the cells and through which a second output signal is output based on the electrical signal that has been output from the second switch.Type: ApplicationFiled: March 13, 2023Publication date: July 20, 2023Inventors: Hiroshi KUBOTA, Nobu MATSUMOTO, Tomonori FUKUSHIMA
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Patent number: 11698434Abstract: A machine control device includes an imaging control unit that controls an imaging device to capture two images at two different imaging positions; an imaging position information acquiring unit that acquires positional information of two imaging positions; a measurement distance restoring unit that restores a measurement distance of an object based on two images, distance information between two imaging positions, and a parameter of the imaging device, by using a stereo camera method; a measurement precision calculating unit that calculates a measurement precision of the measurement distance of the object based on two images, the distance information between two imaging positions, and the parameter of the imaging device; an area specifying unit that specifies a partial area of the object as a specified area; and a measurement precision determining unit that determines whether the measurement precision of the object satisfies a predetermined precision in the specified area.Type: GrantFiled: January 3, 2020Date of Patent: July 11, 2023Assignee: FANUC CORPORATIONInventor: Tomonori Fukushima
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Patent number: 11691237Abstract: A machine control device includes: an imaging control unit that controls the imaging device to capture two images at two different imaging positions; an imaging position information acquiring unit that acquires positional information of the two imaging positions; a measurement distance restoring unit that restores a measurement distance of the object based on two images, distance information between two imaging positions, and a parameter of the imaging device by using a stereo camera method; and a predetermined precision position calculating unit that calculates distance information between the two imaging positions at which the measurement precision of the object satisfies a predetermined precision based on the two images, the measurement distance of the object, and the parameter of the imaging device, in which the machine control device controls the position and orientation of the imaging device based on the distance information between the two imaging positions, and changes two imaging positions.Type: GrantFiled: January 8, 2020Date of Patent: July 4, 2023Assignee: FANUC CORPORATIONInventor: Tomonori Fukushima
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Patent number: 11635497Abstract: A method for determining photodetector elements used for measurement, from photodetector elements of a photodetector device, includes directing measurement light to an object, such that the measurement light reflected by the object is incident on the photodetector device, selecting a group of candidate photodetector elements that are consecutively arranged to each other from the plurality of photodetector elements, and obtaining an output signal from each of the candidate photodetector elements of the group when the reflected measurement light is incident on the photodetector device.Type: GrantFiled: March 2, 2017Date of Patent: April 25, 2023Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hiroshi Kubota, Nobu Matsumoto, Tomonori Fukushima
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Patent number: 11204420Abstract: According to one embodiment, a distance measurement apparatus includes a light emitter that intermittently emits a light beam, and a meter that measures a distance to an object from a length of time from an emission of the light beam from the light emitter to a return of reflected light by the object. The light emitter emits the light beam in a certain cycle with delay corresponding to randomly set offset time. The meter generates an integrated detection signal by shifting a plurality of detection signals of the light beam emitted in the certain cycle by the respective offset times and time-divisionally integrating the detection signals, and determines based on the integrated detection signal whether or not the light indicated by the detection signals is reflected light by the object, emitted from the light emitter.Type: GrantFiled: March 5, 2018Date of Patent: December 21, 2021Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Hiroshi Kubota, Nobu Matsumoto, Saki Sato, Tomonori Fukushima
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Patent number: 10739456Abstract: According to an embodiment, a distance measuring device includes emission circuitry, an optical mechanism system, and measurement circuitry. The emission circuitry emits pulse light having a predetermined pulse width. The optical mechanism system emits the pulse light emitted by the emission circuitry to an object to be measured and receives scattered light of the pulse light scattered by the object to be measured. The measurement circuitry measures, via the optical mechanism system, a distance to the object to be measured using a detection signal having magnitude corresponding to light intensity received within a time range corresponding to the pulse width.Type: GrantFiled: June 16, 2017Date of Patent: August 11, 2020Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Kubota, Nobu Matsumoto, Tomonori Fukushima
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Publication number: 20200249309Abstract: A machine control device includes an imaging control unit that controls an imaging device to capture two images at two different imaging positions; an imaging position information acquiring unit that acquires positional information of two imaging positions; a measurement distance restoring unit that restores a measurement distance of an object based on two images, distance information between two imaging positions, and a parameter of the imaging device, by using a stereo camera method; a measurement precision calculating unit that calculates a measurement precision of the measurement distance of the object based on two images, the distance information between two imaging positions, and the parameter of the imaging device; an area specifying unit that specifies a partial area of the object as a specified area; and a measurement precision determining unit that determines whether the measurement precision of the object satisfies a predetermined precision in the specified area.Type: ApplicationFiled: January 3, 2020Publication date: August 6, 2020Inventor: Tomonori FUKUSHIMA
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Publication number: 20200246931Abstract: A machine control device includes: an imaging control unit that controls the imaging device to capture two images at two different imaging positions; an imaging position information acquiring unit that acquires positional information of the two imaging positions; a measurement distance restoring unit that restores a measurement distance of the object based on two images, distance information between two imaging positions, and a parameter of the imaging device by using a stereo camera method; and a predetermined precision position calculating unit that calculates distance information between the two imaging positions at which the measurement precision of the object satisfies a predetermined precision based on the two images, the measurement distance of the object, and the parameter of the imaging device, in which the machine control device controls the position and orientation of the imaging device based on the distance information between the two imaging positions, and changes two imaging positions.Type: ApplicationFiled: January 8, 2020Publication date: August 6, 2020Inventor: Tomonori FUKUSHIMA
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Publication number: 20200191961Abstract: According to an embodiment, a distance measuring device measures a distance to the measured object base on light scattered on the measured object is detected. The distance measuring device includes an optical detector and a measurer. The optical detector detects the scattered light. The measurer has a sampler to sample a signal corresponding to an output signal of the optical detector every time when the light is emitted at a plurality of sampling time points and a storage to accumulate sampling values and store an accumulation value at each sampling time point. The measurer measures the distance based on a plurality of accumulation values at the sampling time points.Type: ApplicationFiled: February 27, 2020Publication date: June 18, 2020Inventors: Hiroshi Kubota, Tomonori Fukushima, Nobu Matsumoto
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Patent number: 10613225Abstract: According to an embodiment, a distance measuring device measures a distance to the measured object base on light scattered on the measured object is detected. The distance measuring device includes an optical detector and a measurer. The optical detector detects the scattered light. The measurer has a sampler to sample a signal corresponding to an output signal of the optical detector every time when the light is emitted at a plurality of sampling time points and a storage to accumulate sampling values and store an accumulation value at each sampling time point. The measurer measures the distance based on a plurality of accumulation values at the sampling time points.Type: GrantFiled: September 13, 2016Date of Patent: April 7, 2020Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Kubota, Tomonori Fukushima, Nobu Matsumoto
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Patent number: 10473785Abstract: A distance measuring device according to an embodiment includes a weight value generator, a cumulative signal generator, and a distance measurer. The weight value generator generates, on the basis of similarity between a first digital signal obtained by digitizing reflected light of laser light irradiated in a first irradiation direction and a second digital signal obtained by digitizing reflected light of laser light irradiated in a second irradiation direction different from the first irradiation direction, a weight value of the second digital signal. The cumulative signal generator accumulates, on the first digital signal, a signal obtained by weighting the second digital signal with the weight value and generates a third digital signal. The distance measurer measures a distance to a target object on the basis of a time difference between irradiation timing of the laser light and timing of a peak position in the third digital signal.Type: GrantFiled: March 14, 2018Date of Patent: November 12, 2019Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Hiroshi Kubota, Tomonori Fukushima, Nobu Matsumoto, Saki Sato
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Publication number: 20190086541Abstract: According to one embodiment, a distance measurement apparatus includes a light emitter that intermittently emits a light beam, and a meter that measures a distance to an object from a length of time from an emission of the light beam from the light emitter to a return of reflected light by the object. The light emitter emits the light beam in a certain cycle with delay corresponding to randomly set offset time. The meter generates an integrated detection signal by shifting a plurality of detection signals of the light beam emitted in the certain cycle by the respective offset times and time-divisionally integrating the detection signals, and determines based on the integrated detection signal whether or not the light indicated by the detection signals is reflected light by the object, emitted from the light emitter.Type: ApplicationFiled: March 5, 2018Publication date: March 21, 2019Applicants: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Hiroshi KUBOTA, Nobu MATSUMOTO, Saki SATO, Tomonori FUKUSHIMA
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Publication number: 20190086542Abstract: A distance measuring device according to an embodiment includes a weight value generator, a cumulative signal generator, and a distance measurer. The weight value generator generates, on the basis of similarity between a first digital signal obtained by digitizing reflected light of laser light irradiated in a first irradiation direction and a second digital signal obtained by digitizing reflected light of laser light irradiated in a second irradiation direction different from the first irradiation direction, a weight value of the second digital signal. The cumulative signal generator accumulates, on the first digital signal, a signal obtained by weighting the second digital signal with the weight value and generates a third digital signal. The distance measurer measures a distance to a target object on the basis of a time difference between irradiation timing of the laser light and timing of a peak position in the third digital signal.Type: ApplicationFiled: March 14, 2018Publication date: March 21, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Hiroshi KUBOTA, Tomonori Fukushima, Nobu Matsumoto, Saki Sato
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Publication number: 20180081040Abstract: A method for determining photodetector elements used for measurement, from photodetector elements of a photodetector device, includes directing measurement light to an object, such that the measurement light reflected by the object is incident on the photodetector device, selecting a group of candidate photodetector elements that are consecutively arranged to each other from the plurality of photodetector elements, and obtaining an output signal from each of the candidate photodetector elements of the group when the reflected measurement light is incident on the photodetector device.Type: ApplicationFiled: March 2, 2017Publication date: March 22, 2018Inventors: Hiroshi KUBOTA, Nobu MATSUMOTO, Tomonori FUKUSHIMA
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Publication number: 20170363740Abstract: According to an embodiment, a distance measuring device includes emission circuitry, an optical mechanism system, and measurement circuitry. The emission circuitry emits pulse light having a predetermined pulse width. The optical mechanism system emits the pulse light emitted by the emission circuitry to an object to be measured and receives scattered light of the pulse light scattered by the object to be measured. The measurement circuitry measures, via the optical mechanism system, a distance to the object to be measured using a detection signal having magnitude corresponding to light intensity received within a time range corresponding to the pulse width.Type: ApplicationFiled: June 16, 2017Publication date: December 21, 2017Inventors: Hiroshi Kubota, Nobu Matsumoto, Tomonori Fukushima
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Publication number: 20170082746Abstract: According to an embodiment, a distance measuring device measures a distance to the measured object base on light scattered on the measured object is detected. The distance measuring device includes an optical detector and a measurer. The optical detector detects the scattered light. The measurer has a sampler to sample a signal corresponding to an output signal of the optical detector every time when the light is emitted at a plurality of sampling time points and a storage to accumulate sampling values and store an accumulation value at each sampling time point. The measurer measures the distance based on a plurality of accumulation values at the sampling time points.Type: ApplicationFiled: September 13, 2016Publication date: March 23, 2017Inventors: Hiroshi Kubota, Tomonori Fukushima, Nobu Matsumoto
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Publication number: 20160210735Abstract: A system for recognizing obstacle avoidance around a moving object includes an image capturing unit configured to capture images in a moving direction of the object, a processing unit configured to generate three-dimensional data based on the captured images, determine positions of the obstacles in a three-dimensional space according to the three-dimensional data, and generate an image including marks indicating a region proximate to the obstacles, and a display unit configured to display the generated image.Type: ApplicationFiled: September 1, 2015Publication date: July 21, 2016Inventor: Tomonori FUKUSHIMA