Patents by Inventor Masahiro Takizawa
Masahiro Takizawa 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: 20240125878Abstract: In separating water and fat with applying the Dixon method, peak intensities of fat with multiple peaks are individually calculated with a high degree of accuracy while reducing the number of variables to be estimated. Multiple images made up of signals acquired at different echo times (TEs) are used to solve a predetermined signal equation (signal model) expressing the relation between the pixel values (signal values) of the images and imaging parameters such as signal intensities of components and TE, thereby performing separation of signals for each component. For separating the signals, at least one of the variables (other than the signal intensity) included in the signal equation is subjected to a process (first estimation process) for refining a value roughly obtained, and then using thus refined value of the variable to estimate (second estimation process) other variables (including the signal intensity), the signals are separated.Type: ApplicationFiled: September 22, 2023Publication date: April 18, 2024Inventors: Takashi Nishihara, Toru Shirai, Yoshitaka Bito, Masahiro Takizawa
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Patent number: 11959324Abstract: A control system includes a contact sensor configured to detect contact between an operation body and a door handle, a force sensor configured to detect a force applied by the operation body to the door handle, and a controller configured to control opening or closing of a door when the contact is detected by the contact sensor and the force is detected by the force sensor.Type: GrantFiled: February 10, 2021Date of Patent: April 16, 2024Assignee: ALPS ALPINE CO., LTD.Inventors: Masahiro Takata, Takeshi Masaki, Kazuhito Oshita, Satoru Takizawa
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Publication number: 20240111009Abstract: Preventing blood flow artifacts from being increased in an imaging plane allows reduction of the blood flow artifacts in the cross section subsequently excited. In the imaging using a spin-echo (SE) pulse sequence, an excitation width of a 90° pulse is extended from an imaging plane to one side. This one side indicates a downstream side of the blood flow with respect to a vessel of interest. In imaging multiple slices, the order of measuring the multiple imaging slices is set along the direction in which the width is extended.Type: ApplicationFiled: September 15, 2023Publication date: April 4, 2024Inventors: Kazuho Kamba, Masahiro Takizawa, Taisei Ueda, Nobuyuki Yoshizawa, Atsushi Kuratani, Kosuke Ito
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Patent number: 11940520Abstract: For a complex image to be complexly added, appropriate phase correction is executed by a simple method to prevent occurrence of an artifact in a signal region and to reduce noise in a background region. Two or more types of smoothing processing with different smoothing degrees are executed on a phase image of the complex image to obtain two or more types of smoothed phase images having different smoothing degrees. A weight for each of these smoothed phase images is calculated based on a signal value (SNR) of an intensity image, and addition is performed by a weight for each signal value to obtain a smoothed phase image for correction. After a phase of the complex image is corrected using the smoothed phase image, a phase-corrected complex image is complexly added. As a result, phase correction equivalent to phase correction in which a smoothing degree is weakened in the signal region and a smoothing degree is strengthened in the background region is realized.Type: GrantFiled: August 22, 2022Date of Patent: March 26, 2024Assignee: FUJIFILM Healthcare CorporationInventors: Ryota Sato, Suguru Yokosawa, Toru Shirai, Kazuho Kamba, Yoshitaka Sato, Masahiro Takizawa
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Patent number: 11935591Abstract: According to one embodiment, a memory device includes a first wiring line, a second wiring line, a memory cell connected between the first and second wiring lines, including a resistance change memory element having first and second resistance states, and a two-terminal switching element connected in series to the resistance change memory element, and a voltage application circuit which applies a write voltage signal having a first polarity and setting a desired resistance state to the resistance change memory element, to the memory cell, and applies, after the write voltage signal is applied to the memory cell, a second polarity voltage signal having a magnitude that prevents the two-terminal switching element from being set to the on-state, to the memory cell.Type: GrantFiled: December 13, 2021Date of Patent: March 19, 2024Assignee: Kioxia CorporationInventors: Masahiro Takahashi, Hiroshi Ito, Ryousuke Takizawa
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Publication number: 20240083518Abstract: A floor mat arranged in a working machine includes a floor portion, a wall portion arranged on a circumferential portion of the floor portion, and an opening portion arranged on a part of a connecting portion of the wall portion, the connecting portion connecting to the floor portion. The floor mat includes a mat main body arranged on the floor portion, a covering portion configured to cover the opening portion, and an connecting portion configured to connect the covering portion flexibly to a circumferential portion of the mat main body.Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: KUBOTA CORPORATIONInventors: Masahiro AIHARA, Shota SAKAMOTO, Akihiro ICHIHARA, Kazuya OI, Yoshiki TAKIZAWA, Kenichi SAIKI
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Publication number: 20230288511Abstract: In an MRI image, signals from plural metabolites are accurately separated. A signal separation unit generates, as a dictionary, plural signal patterns in which values of variables of substances are changed based on prior information, and performs signal separation of the substances by matching the dictionary with a measured signal. At this time, an order of signal intensities of the substances is used as the prior information, and selection of a most matched dictionary for each of the substances is repeated while changing a dictionary used for matching according to the order.Type: ApplicationFiled: March 7, 2023Publication date: September 14, 2023Inventors: Toru Shirai, Ryota Sato, Takashi Nishihara, Masahiro Takizawa, Yoshitaka Bito
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Patent number: 11711473Abstract: An image forming apparatus that is capable of wireless communication with an operation device and that can be operated by the operation device via the wireless communication, the image forming apparatus comprising: an image forming unit configured to perform image formation on a sheet based on a print execution instruction sent from the operation device via the wireless communication; a reading unit configured to perform reading of an image formed on the sheet based on a scan execution instruction sent from the operation device via the wireless communication; and a controller that, during a period of time from the time one user logs in the image forming apparatus until the user logs out, (1) is configured to prohibit the print execution instruction using an operation device by other user who has logged in using the operation device, and (2) is configured to permit the scan execution instruction using the operation device.Type: GrantFiled: January 21, 2022Date of Patent: July 25, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Masahiro Takizawa, Yoshinobu Umeda
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Publication number: 20230062864Abstract: For a complex image to be complexly added, appropriate phase correction is executed by a simple method to prevent occurrence of an artifact in a signal region and to reduce noise in a background region. Two or more types of smoothing processing with different smoothing degrees are executed on a phase image of the complex image to obtain two or more types of smoothed phase images having different smoothing degrees. A weight for each of these smoothed phase images is calculated based on a signal value (SNR) of an intensity image, and addition is performed by a weight for each signal value to obtain a smoothed phase image for correction. After a phase of the complex image is corrected using the smoothed phase image, a phase-corrected complex image is complexly added. As a result, phase correction equivalent to phase correction in which a smoothing degree is weakened in the signal region and a smoothing degree is strengthened in the background region is realized.Type: ApplicationFiled: August 22, 2022Publication date: March 2, 2023Inventors: Ryota Sato, Suguru Yokosawa, Toru Shirai, Kazuho Kamba, Yoshitaka Sato, Masahiro Takizawa
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Patent number: 11579231Abstract: To provide a technique in which, in imaging using an EPI method, an occurrence of an artifact when phase correction is performed for each channel is avoided and the phase correction is accurately performed. A common phase correction value to be applied to data of all channels is calculated using pre-scan data of each channel. The common phase correction value is obtained by combining a difference phase obtained for each of the channels. The difference phase is obtained by complex integration, while an absolute value of each channel is maintained as it is. The combination is performed by complex average, and averaging processing according to a weight of the absolute value is performed. The occurrence of an artifact can be prevented by using the common phase correction value, and robust phase correction can be performed by including the weight of the absolute value.Type: GrantFiled: December 20, 2021Date of Patent: February 14, 2023Assignee: FUJIFILM Healthcare CorporationInventors: Ryota Satoh, Keisuke Nishio, Yasuhiro Kamada, Yoshitaka Sato, Masahiro Takizawa, Toru Shirai
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Patent number: 11458561Abstract: To provide a three-dimensional printing device that irradiates approximately the same ranges on the surface of a powder layer simultaneously with a plurality of electron beams having different beam shapes. An electron beam column 200 of the three-dimensional printing device 100 includes a plurality of electron sources 20 including electron sources having anisotropically-shaped beam generating units, and beam shape deforming elements 30 that deform the beam shapes of electron beams output from the electron sources 20 on a surface 63 of a powder layer 62. A deflector 50 included in the electron beam column 200 deflects an electron beam output from each of the plurality of electron sources 20 by a distance larger than the beam space between electron beams before passing through the deflector 50.Type: GrantFiled: January 12, 2017Date of Patent: October 4, 2022Assignee: ADVANTEST CORPORATIONInventors: Shinichi Hamaguchi, Shinji Sugatani, Masayuki Takahashi, Masahiro Takizawa
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Patent number: 11429326Abstract: An image forming system includes an image forming apparatus configured to form an image on a sheet, a plurality of accessory apparatuses arranged side by side along a conveyance direction of the sheet, and a base station configured to wirelessly communicate with the image forming apparatus and the plurality of accessory apparatuses. The image forming apparatus includes one or more controllers configured to function as (i) a unit configured to acquire, from the base station, information that the base station acquires by wirelessly communicating with the plurality of accessory apparatuses, and (ii) a unit configured to output screen information for registering information about an arrangement order of the plurality of accessory apparatuses, based on the information acquired from the base station.Type: GrantFiled: June 22, 2021Date of Patent: August 30, 2022Assignee: Canon Kabushiki KaishaInventors: Masahiro Takizawa, Ryohei Yamada
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Publication number: 20220272214Abstract: An image forming apparatus that is capable of wireless communication with an operation device and that can be operated by the operation device via the wireless communication, the image forming apparatus comprising: an image forming unit configured to perform image formation on a sheet based on a print execution instruction sent from the operation device via the wireless communication; a reading unit configured to perform reading of an image formed on the sheet based on a scan execution instruction sent from the operation device via the wireless communication; and a controller that, during a period of time from the time one user logs in the image forming apparatus until the user logs out, (1) is configured to prohibit the print execution instruction using an operation device by other user who has logged in using the operation device, and (2) is configured to permit the scan execution instruction using the operation device.Type: ApplicationFiled: January 21, 2022Publication date: August 25, 2022Inventors: Masahiro Takizawa, Yoshinobu Umeda
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Patent number: 11393073Abstract: In an image acquired by a plurality of receiver coils with the use of MRI, separated images are obtained by separating spatially overlapping signals according to PI method, and noise in the separated images is eliminated with a high degree of precision. A complex image spatially overlapping is measured from nuclear magnetic resonance signals received by a plurality of receiver coils, and spatially overlapping signals are separated and a plurality of separated images are calculated, by using sensitivity information of the plurality of receiver coils. Then, noise is eliminated based on a correlation of noise mixed between the separated images.Type: GrantFiled: July 27, 2018Date of Patent: July 19, 2022Assignee: FUJIFILM Healthcare CorporationInventors: Toru Shirai, Ryota Satoh, Yasuhiro Kamada, Masahiro Takizawa, Yoshihisa Sotome
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Publication number: 20220221543Abstract: To provide a technique in which, in imaging using an EPI method, an occurrence of an artifact when phase correction is performed for each channel is avoided and the phase correction is accurately performed. A common phase correction value to be applied to data of all channels is calculated using pre-scan data of each channel. The common phase correction value is obtained by combining a difference phase obtained for each of the channels. The difference phase is obtained by complex integration, while an absolute value of each channel is maintained as it is. The combination is performed by complex average, and averaging processing according to a weight of the absolute value is performed. The occurrence of an artifact can be prevented by using the common phase correction value, and robust phase correction can be performed by including the weight of the absolute value.Type: ApplicationFiled: December 20, 2021Publication date: July 14, 2022Inventors: Ryota SATOH, Keisuke NISHIO, Yasuhiro KAMADA, Yoshitaka SATO, Masahiro TAKIZAWA, Toru SHIRAI
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Patent number: 11378637Abstract: Imaging failure of a positioning image due to the difference in the position or the size of a subject placed in the examination space is prevented, and accordingly, the extension of the examination time is prevented. A pre-scan for appropriately setting the imaging position for positioning imaging is automatically performed prior to the positioning imaging and the main imaging of an MRI apparatus, and a region where an examination part of a subject is present (the extent of the examination part) is detected using the measurement data. By using the detected extent of the examination part, it is possible to subsequently determine the imaging position or calculate the scan parameters used for imaging.Type: GrantFiled: March 18, 2021Date of Patent: July 5, 2022Assignee: FUJIFILM HEALTHCARE CORPORATIONInventors: Ayaka Ikegawa, Masahiro Takizawa, Hisako Nagao, Tomohiro Gotou
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Publication number: 20220202376Abstract: The present invention provides a technique capable of accurately and automatically setting a region of interest for acquiring biological information based on a biological information signal obtained from a subject placed in an examination space in a non-contact manner. A signal analyzing unit of a medical imaging apparatus uses the biological information signal for each of a plurality of regions included in a predetermined range among signals measured by a biological information measuring apparatus to select the region of interest in which movement of the subject is to be acquired among the plurality of regions. The movement of the subject is calculated using the biological information signal measured by the biological information measuring apparatus from the selected region of interest.Type: ApplicationFiled: December 21, 2021Publication date: June 30, 2022Inventors: Yukio KANEKO, Hikaru HANADA, Toru SHIRAI, Masahiro TAKIZAWA
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Publication number: 20220061691Abstract: A magnetic resonance imaging apparatus captures a morphology image and a function image that are captured with respect to an equal imaging region of an object under examination. Processing for deforming the morphology image is performed using a deformation parameter and moving positions of structural objects included in the morphology image to respective positions of structural objects of a previously determined standard morphology. Then, the function image is deformed using a value of the deformation parameter used in deforming the morphology image to cause a position of a region included in the function image to coincide with a position of a corresponding region of the standard morphology or by using the standard morphology in an opposite direction using the value of the deformation parameter to cause a position of a region of the structural object thereof to coincide with a position of a corresponding region included in the function image.Type: ApplicationFiled: April 14, 2021Publication date: March 3, 2022Inventors: Yasuo KAWATA, Masahiro TAKIZAWA, Nobuyuki YOSHIZAWA
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Patent number: 11229971Abstract: Provided is a three-dimensional laminating and shaping apparatus 100 including a column unit 200 that is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer 32, an insulating portion that electrically insulates a three-dimensional structure 36 from a ground potential member, an ammeter 73 that is configured to measure the current value indicative of the current flowing into the ground after passing through the three-dimensional structure 36, a melting judging unit 410 that is configured to detect that the powder layer 32 is melted based on the current value measured by the ammeter 73 and generate a melting signal, and a deflection controller 420 that is configured to receive the melting signal to determine the condition for the irradiation with the electron beam.Type: GrantFiled: September 11, 2018Date of Patent: January 25, 2022Assignee: ADVANTEST CORPORATIONInventors: Shinji Sugatani, Shigeki Nishina, Jun Matsumoto, Masahiro Takizawa, Minoru Soma, Akio Yamada
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Patent number: RE48925Abstract: An information processing apparatus operating in a first power state, a second power state, a third power state, and fourth power state includes a power control unit configured to the third power state to the fourth power state when a first shift time is measured, and a control unit configured to, when the power control unit has shifted the power state of the information processing apparatus from the third power state to the first power state, clear the measured time and not to, when the power control unit has shifted the power state of the information processing apparatus from the third power state to the second power state, clear the measured time clear.Type: GrantFiled: March 22, 2018Date of Patent: February 8, 2022Assignee: Canon Kabushiki KaishaInventor: Masahiro Takizawa