Patents by Inventor Nobuhiko Fujii

Nobuhiko Fujii 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).

  • Patent number: 12076192
    Abstract: A coherence indicator of received signals is calculated for pixels with a small amount of calculation, and a high-quality ultrasound image is obtained. A plurality of types of images in which a sound speed for beamforming is changed into a plurality of types are generated. By arranging, in order of the sound speed for beamforming, signal intensities of the pixels at corresponding positions between the plurality of types of images, a change in signal intensities in a direction of the sound speed for beamforming is obtained. A coherence indicator representing coherence of the received signals used for beamforming of the pixels is calculated based on the obtained change in the signal intensities.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: September 3, 2024
    Assignee: FUJIFILM Healthcare Corporation
    Inventors: Misaki Hiroshima, Nobuhiko Fujii
  • Publication number: 20230404526
    Abstract: A first beam scanning plane and a second beam scanning plane are formed alternately. For formation of the first beam scanning plane, transmission/reception control is performed so that the beam deflection angle increases continuously toward the negative side from a first end to a second end in the electronic scanning direction. For formation of the second beam scanning plane, transmission/reception control is performed so that the beam deflection angle increases continuously toward the positive side from the second end to the first end in the electronic scanning direction.
    Type: Application
    Filed: June 5, 2023
    Publication date: December 21, 2023
    Inventors: Hiroki Tanaka, Nobuhiko Fujii, Haruka Mukawa, Takayuki Iwashita
  • Publication number: 20230399498
    Abstract: A rubber composition of a first embodiment contains 100 parts by mass of a chloroprene polymer, more than 0 parts by mass and 25 parts by mass or less of a diene-based polymer having an epoxy group, and 0.3 to 1.8 parts by mass of an organic peroxide, in which the chloroprene polymer includes a copolymer of chloroprene. A rubber composition of a second embodiment contains 100 parts by mass of a chloroprene polymer, more than 0 parts by mass and 25 parts by mass or less of a diene-based polymer having an epoxy group, and 0.3 to 1.8 parts by mass of an organic peroxide, in which the chloroprene polymer includes a homopolymer of chloroprene.
    Type: Application
    Filed: August 4, 2021
    Publication date: December 14, 2023
    Applicant: Denka Company Limited
    Inventors: Atsunori KONDO, Nobuhiko FUJII
  • Publication number: 20230383102
    Abstract: A rubber composition containing 100 parts by mass of a chloroprene polymer, more than 0 parts by mass and 25 parts by mass or less of a diene-based polymer having an epoxy group, and 0.2 to 2.5 parts by mass of at least one selected from the group consisting of a thiourea compound and a thiazolidinethione compound. A vulcanizate and a vulcanized molded article of the rubber composition.
    Type: Application
    Filed: August 5, 2021
    Publication date: November 30, 2023
    Applicant: Denka Company Limited
    Inventors: Atsunori KONDO, Nobuhiko FUJII
  • Patent number: 11759179
    Abstract: A control unit cyclically sets a first transmission/reception condition for a close range and a second transmission/reception condition for a long range. A synthesizing unit generates an added frame sequence and an edge-enhanced frame sequence from a reception frame sequence, and generates a synthesized frame sequence from the added frame sequence and the edge-enhanced frame sequence. The first transmission/reception condition includes a first transmission frequency and a first transmission depth of focus. The second transmission/reception condition includes a second transmission frequency that is lower than the first transmission frequency and a second transmission depth of focus that is greater than the first transmission depth of focus.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: September 19, 2023
    Assignee: FUJIFILM Healthcare Corporation
    Inventor: Nobuhiko Fujii
  • Patent number: 11613165
    Abstract: A vehicle air conditioner having a compressor to compress a refrigerant, an air flow passage to supply air to the vehicle; a radiator; an outdoor heat exchanger; a battery temperature adjustment device for letting a heat medium circulate through a battery mounted in the vehicle, thereby adjusting a temperature of the battery; and a control device. The battery temperature adjustment device has a refrigerant-heat medium heat exchanger for performing exchange of heat between the refrigerant and the heat medium. The control device is configured to execute: a radiator and outdoor heat exchanger heating/battery cooling mode, and an obstruct inflow heating/battery cooling mode.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: March 28, 2023
    Assignee: SANDEN CORPORATION
    Inventors: Tetsuya Ishizeki, Yoshiyuki Okamoto, Akira Horikoshi, Takashi Toyama, Nobuhiko Fujii
  • Publication number: 20220338843
    Abstract: A coherence indicator of received signals is calculated for pixels with a small amount of calculation, and a high-quality ultrasound image is obtained. A plurality of types of images in which a sound speed for beamforming is changed into a plurality of types are generated. By arranging, in order of the sound speed for beamforming, signal intensities of the pixels at corresponding positions between the plurality of types of images, a change in signal intensities in a direction of the sound speed for beamforming is obtained. A coherence indicator representing coherence of the received signals used for beamforming of the pixels is calculated based on the obtained change in the signal intensities.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 27, 2022
    Inventors: Misaki Hiroshima, Nobuhiko Fujii
  • Publication number: 20220225965
    Abstract: A control unit cyclically sets a first transmission/reception condition for a close range and a second transmission/reception condition for a long range. A synthesizing unit generates an added frame sequence and an edge-enhanced frame sequence from a reception frame sequence, and generates a synthesized frame sequence from the added frame sequence and the edge-enhanced frame sequence. The first transmission/reception condition includes a first transmission frequency and a first transmission depth of focus. The second transmission/reception condition includes a second transmission frequency that is lower than the first transmission frequency and a second transmission depth of focus that is greater than the first transmission depth of focus.
    Type: Application
    Filed: January 11, 2022
    Publication date: July 21, 2022
    Inventor: Nobuhiko FUJII
  • Publication number: 20220134842
    Abstract: A vehicle air conditioner having a compressor to compress a refrigerant, an air flow passage to supply air to the vehicle; a radiator; an outdoor heat exchanger; a battery temperature adjustment device for letting a heat medium circulate through a battery mounted in the vehicle, thereby adjusting a temperature of the battery; and a control device. The battery temperature adjustment device has a refrigerant-heat medium heat exchanger for performing exchange of heat between the refrigerant and the heat medium. The control device is configured to execute: a radiator and outdoor heat exchanger heating/battery cooling mode, and an obstruct inflow heating/battery cooling mode.
    Type: Application
    Filed: January 7, 2022
    Publication date: May 5, 2022
    Applicant: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya ISHIZEKI, Takashi Toyama, Yoshiyuki Okamoto, Akira Horikoshi, Nobuhiko Fujii
  • Patent number: 11257188
    Abstract: Provided is a technique capable of simultaneously satisfying two requests of removing a speckle and clarifying a tissue structure. A noise in an ultrasonic image is removed, and a morphology processing is performed on a noise-removed image. The morphology processing includes a first calculation of performing dilation and erosion and a second calculation of performing opening and closing, and determines a value of a structural element used in the second calculation of the morphology by using a result of the first calculation performed on the noise-removed image.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: February 22, 2022
    Assignee: FUJIFILM HEALTHCARE CORPORATION
    Inventors: Aya Kishimoto, Nobuhiko Fujii
  • Patent number: 11254188
    Abstract: An air conditioner includes a battery temperature adjustment device which adjusts the temperature of a battery and has a refrigerant-heat medium heat exchanger to exchange heat between a refrigerant and a heat medium. A controller executes a first heating/battery cooling mode to let the refrigerant discharged from a compressor radiate heat in a radiator, decompress the refrigerant, and then let the refrigerant absorb heat in an outdoor heat exchanger and the refrigerant-heat medium heat exchanger, and a second heating/battery cooling mode to let the refrigerant discharged from the compressor radiate heat in the radiator and the outdoor heat exchanger, decompress the refrigerant, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: February 22, 2022
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Yoshiyuki Okamoto, Akira Horikoshi, Takashi Toyama, Nobuhiko Fujii
  • Patent number: 11151697
    Abstract: A basic image generation unit generates a base frame by synthesizing a reception frame sequence obtained by transmission/reception of ultrasonic waves, and an edge-enhanced image generation unit generates a compensation frame where an edge component of an object is emphasized based on the reception frame sequence. A synthesis unit generates an output frame by synthesizing the base frame and the compensation frame.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: October 19, 2021
    Assignee: Hitachi, Ltd.
    Inventor: Nobuhiko Fujii
  • Publication number: 20210312594
    Abstract: An ultrasonic imaging apparatus is capable of removing noise for each tissue from a received signal of a living tissue in which a plurality of tissues are intricately intertwined, and suppressing artifacts even at a tissue boundary. An evaluator receives one or more time-series ultrasonic signals obtained by receiving an ultrasonic wave from a subject by an ultrasonic probe after transmitting an ultrasonic wave, and generates a filter control signal for setting a characteristic value of a filter for removing noise contained in the ultrasonic signal, for a time-series direction of the ultrasonic signal. A filter processor removes the noise by processing the ultrasonic signal of the corresponding signal characteristic value by the filter having the characteristic value set based on the filter control signal. A smoothing processor that smooths distribution of the filter control signal is disposed between the evaluator and the filter processor.
    Type: Application
    Filed: March 30, 2021
    Publication date: October 7, 2021
    Inventors: Kazuhiro YAMANAKA, Teiichiro IKEDA, Nobuhiko FUJII, Misaki HIROSHIMA
  • Patent number: 11107196
    Abstract: A basic image generation unit generates a base frame by synthesizing a reception frame sequence obtained by transmission/reception of ultrasonic waves, and an edge-enhanced image generation unit generates a compensation frame where an edge component of an object is emphasized based on the reception frame sequence. A synthesis unit generates an output frame by synthesizing the base frame and the compensation frame.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: August 31, 2021
    Assignee: Hitachi, Ltd.
    Inventor: Nobuhiko Fujii
  • Patent number: 10816651
    Abstract: The purpose of the present invention is to improve the accuracy of Doppler measurements. An ultrasonic diagnosis device comprises: a transmission unit 12 for transmitting, through a probe 14, an ultrasonic wave for each of a plurality of transmit beams formed at different positions or in different directions; a reception unit 20 for receiving, through the probe 14, an ultrasonic wave for each receive beam included in a receive beam set formed to correspond to each transmit beam; a Doppler processing unit 24 for determining a Doppler measurement for each of the receive beams; and a combining/selecting unit 26 for combining a first Doppler measurement determined for a first receive beam belonging to a receive beam set formed to correspond to a first transmit beam and a second Doppler measurement determined for a second receive beam belonging to a receive beam set formed to correspond to a second transmit beam when the first receive beam and the second receive beam are in a predetermined positional relationship.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 27, 2020
    Assignee: Hitachi, Ltd.
    Inventor: Nobuhiko Fujii
  • Publication number: 20200226721
    Abstract: Provided is a technique capable of simultaneously satisfying two requests of removing a speckle and clarifying a tissue structure. A noise in an ultrasonic image is removed, and a morphology processing is performed on a noise-removed image. The morphology processing includes a first calculation of performing dilation and erosion and a second calculation of performing opening and closing, and determines a value of a structural element used in the second calculation of the morphology by using a result of the first calculation performed on the noise-removed image.
    Type: Application
    Filed: November 26, 2019
    Publication date: July 16, 2020
    Inventors: Aya KISHIMOTO, Nobuhiko FUJII
  • Publication number: 20200200900
    Abstract: An object of the invention is to provide an ultrasonic imaging device that has a function of setting an optimal velocity range and baseline as initial settings for a target blood flow at the start of spectral Doppler. A control unit that controls transmission and reception of an ultrasonic imaging device performs a first blood flow measurement for acquiring a two-dimensional distribution of blood flow information, and a second blood flow measurement for acquiring a spectrum of a blood flow velocity. A calculation unit that performs Doppler calculation includes: a blood flow velocity estimation unit that estimates a blood flow velocity causing no aliasing, and a measurement condition calculation unit that calculates a measurement condition of the second blood flow measurement by using the blood flow velocity causing no aliasing. The control unit starts the second blood flow measurement under the measurement condition calculated by the measurement condition calculation unit.
    Type: Application
    Filed: November 12, 2019
    Publication date: June 25, 2020
    Inventors: Rei ASAMI, Nobuhiko FUJII, Hiroki TANAKA
  • Publication number: 20200047583
    Abstract: An air conditioner for a vehicle is provided which is capable of appropriately cooling a battery while effectively utilizing the heat of the battery for heating of a vehicle interior. A battery temperature adjustment device 61 which adjusts the temperature of a battery 55 has a refrigerant-heat medium heat exchanger 64 to exchange heat between a refrigerant and a heat medium. A controller executes a first heating/battery cooling mode to let the refrigerant discharged from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant, and then let the refrigerant absorb heat in an outdoor heat exchanger 7 and the refrigerant-heat medium heat exchanger, and a second heating/battery cooling mode to let the refrigerant discharged from the compressor radiate heat in the radiator and the outdoor heat exchanger, decompress the refrigerant, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger.
    Type: Application
    Filed: March 9, 2018
    Publication date: February 13, 2020
    Inventors: Tetsuya ISHIZEKI, Yoshiyuki OKAMOTO, Akira HORIKOSHI, Takashi TOYAMA, Nobuhiko FUJII
  • Publication number: 20200027199
    Abstract: A basic image generation unit generates a base frame by synthesizing a reception frame sequence obtained by transmission/reception of ultrasonic waves, and an edge-enhanced image generation unit generates a compensation frame where an edge component of an object is emphasized based on the reception frame sequence. A synthesis unit generates an output frame by synthesizing the base frame and the compensation frame.
    Type: Application
    Filed: November 10, 2017
    Publication date: January 23, 2020
    Inventor: Nobuhiko FUJII
  • Publication number: 20180203104
    Abstract: The purpose of the present invention is to improve the accuracy of Doppler measurements. An ultrasonic diagnosis device comprises: a transmission unit 12 for transmitting, through a probe 14, an ultrasonic wave for each of a plurality of transmit beams formed at different positions or in different directions; a reception unit 20 for receiving, through the probe 14, an ultrasonic wave for each receive beam included in a receive beam set formed to correspond to each transmit beam; a Doppler processing unit 24 for determining a Doppler measurement for each of the receive beams; and a combining/selecting unit 26 for combining a first Doppler measurement determined for a first receive beam belonging to a receive beam set formed to correspond to a first transmit beam and a second Doppler measurement determined for a second receive beam belonging to a receive beam set formed to correspond to a second transmit beam when the first receive beam and the second receive beam are in a predetermined positional relationship.
    Type: Application
    Filed: October 13, 2015
    Publication date: July 19, 2018
    Applicant: Hitachi, Ltd.
    Inventor: Nobuhiko FUJII