Patents by Inventor Kyohei Naito

Kyohei Naito 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: 11962801
    Abstract: An image decoding device includes: a prediction signal generation unit that generates a prediction signal by intra prediction, wherein in a block to which intra sub-partitions are applied, the prediction signal generation unit refers to a pixel of a decoded block adjacent to the block when generating prediction signals of all sub-blocks in the block.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: April 16, 2024
    Assignee: KDDI CORPORATION
    Inventors: Kyohei Unno, Yoshitaka Kidani, Kei Kawamura, Sei Naito
  • Publication number: 20240114165
    Abstract: An image decoding device includes a prediction unit configured to generate a prediction signal included in a prediction block based on a motion vector. The prediction unit is configured to perform refinement processing of setting a search range based on a reference position specified by the motion vector, specifying a corrected reference position having the smallest predetermined cost from the search range, and correcting the motion vector based on the corrected reference position. When a block size of the prediction block is larger than a predetermined block size, the prediction unit is configured to divide the prediction block into sub-block groups and perform the refinement processing for each sub-block.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 4, 2024
    Applicant: KDDI CORPORATION
    Inventors: Kyohei UNNO, Kei KAWAMURA, Sei NAITO
  • Patent number: 11949860
    Abstract: An image decoding device, includes a filter unit using, as an input, a decoded signal prior to the filtering process and output a filtered decoded signal. The filter unit performs clipping processing on the decoded signal prior to the filtering process such that the absolute value of a differential value between a reference pixel value and a pixel value of the decoded signal prior to the filtering process is less than or equal to a predefined threshold value, and to generate the filtered decoded signal through the linear weighted addition of the value after the clipping processing is performed and the pixel value of the decoded signal prior to the filtering process; and a large-small relationship between the threshold value for a luma signal and the threshold value for a chroma signal are defined such that the large-small relationship is unchanged when an internal bit depth is changed.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: April 2, 2024
    Assignee: KDDI Corporation
    Inventors: Kyohei Unno, Kei Kawamura, Sei Naito
  • Patent number: 11607884
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: March 21, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 11569429
    Abstract: S1 is a sum of the areas of a plurality of individual electrodes formed on a first plane of a piezoelectric body of a liquid discharge head, S2 is an area of a first common electrode formed on a second plane, S3 is an area of a second common electrode formed on a third plane, D1 is a distance between a neutral plane and the first plane in a stacking direction, D2 is the distance between the neutral plane and the second plane in the stacking direction, and D3 is the distance between the neutral plane and the third plane in the stacking direction. Then, D1×S1+D2×S2>D3×S3 is satisfied. The liquid discharge head includes a plurality of conductor layers which are formed on the third plane, without contact with the second common electrode and without contact with each other.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: January 31, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Takashi Aiba, Keiji Kura
  • Patent number: 11538978
    Abstract: There is provided a liquid discharge head including a piezoelectric body having a plurality of individual electrodes and a first common electrode, and a plurality of conductor layers. The plurality of individual electrodes have first to fourth individual electrode arrays, and the first common electrode has first and second extending portions, a plurality of first projecting portions, and a plurality of second projecting portions. Each of the first projecting portions overlaps partially with one of the plurality of individual electrodes forming the second individual electrode array along the stacking direction, and each of the second projecting portions overlaps partially with one of the plurality of individual electrodes forming the third individual electrode array along the stacking direction.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: December 27, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Takashi Aiba, Keiji Kura
  • Publication number: 20220212471
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 7, 2022
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 11305533
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: April 19, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Publication number: 20210086514
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 10882317
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: January 5, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Publication number: 20200276816
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 3, 2020
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 10639891
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: May 5, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 10603913
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: March 31, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Patent number: 10369791
    Abstract: There is provided an ink-jet head including: first and second head chips each formed with two first nozzle arrays extending in a first direction, each of the first nozzle arrays including first nozzles corresponding to a first ink, second nozzles corresponding to a second ink, and third nozzles corresponding to a third ink; third and fourth head chips each formed with two third nozzle arrays extending in the first direction, each of the third nozzle arrays including fourth nozzles corresponding to the fourth ink. The first head chip to the fourth head chip are arranged in parallel in a second direction orthogonal to the first direction.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: August 6, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo Kato, Kyohei Naito
  • Patent number: 10369789
    Abstract: A liquid ejection device is disclosed. One liquid ejection device includes a plurality of first contacts connected to a plurality of first piezoelectric elements, respectively, and positioned at a more outer position than a first piezoelectric element row and a second piezoelectric element row from a center of the device in a second direction. The liquid ejection device includes a plurality of second contacts connected to a plurality of second piezoelectric elements, respectively, and positioned at a more outer position than a third piezoelectric element row and a fourth piezoelectric element row from the center of the liquid ejection device in the second direction.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: August 6, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Kyohei Naito
  • Patent number: 10343399
    Abstract: A liquid jetting apparatus includes: a channel substrate having a pressure chamber which is long in a first direction; an insulating film provided on the channel substrate to cover the pressure chamber; a piezoelectric film overlapping with the insulating film and having first and second portions, the first portion overlapping with a central portion of the pressure chamber in the first direction, the second portion extending from the first portion in the first direction beyond the pressure chamber, the first portion having a width in a second direction which is smaller than a width of the pressure chamber in the second direction; a first electrode arranged between the insulating film and the piezoelectric film; and a second electrode facing the first electrode with the piezoelectric film being sandwiched therebetween. The insulating film has a thin-walled portion formed at a portion overlapping with the second portion of the piezoelectric film.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 9, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Kyohei Naito
  • Publication number: 20190103545
    Abstract: There is provided a liquid discharge head including a piezoelectric body having a plurality of individual electrodes and a first common electrode, and a plurality of conductor layers. The plurality of individual electrodes have first to fourth individual electrode arrays, and the first common electrode has first and second extending portions, a plurality of first projecting portions, and a plurality of second projecting portions. Each of the first projecting portions overlaps partially with one of the plurality of individual electrodes forming the second individual electrode array along the stacking direction, and each of the second projecting portions overlaps partially with one of the plurality of individual electrodes forming the third individual electrode array along the stacking direction.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Inventors: Kyohei Naito, Takashi Aiba, Keiji Kura
  • Publication number: 20190103544
    Abstract: S1 is a sum of the areas of a plurality of individual electrodes formed on a first plane of a piezoelectric body of a liquid discharge head, S2 is an area of a first common electrode formed on a second plane, S3 is an area of a second common electrode formed on a third plane, D1 is a distance between a neutral plane and the first plane in a stacking direction, D2 is the distance between the neutral plane and the second plane in the stacking direction, and D3 is the distance between the neutral plane and the third plane in the stacking direction. Then, D1×S1+D2×S2>D3×S3 is satisfied. The liquid discharge head includes a plurality of conductor layers which are formed on the third plane, without contact with the second common electrode and without contact with each other.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Inventors: Kyohei Naito, Takashi Aiba, Keiji Kura
  • Publication number: 20190030892
    Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.
    Type: Application
    Filed: August 3, 2018
    Publication date: January 31, 2019
    Inventors: Kyohei Naito, Shohei Koide, Jiro Yamamoto
  • Publication number: 20180290447
    Abstract: There is provided an ink-jet head including: first and second head chips each formed with two first nozzle arrays extending in a first direction, each of the first nozzle arrays including first nozzles corresponding to a first ink, second nozzles corresponding to a second ink, and third nozzles corresponding to a third ink; third and fourth head chips each formed with two third nozzle arrays extending in the first direction, each of the third nozzle arrays including fourth nozzles corresponding to the fourth ink. The first head chip to the fourth head chip are arranged in parallel in a second direction orthogonal to the first direction.
    Type: Application
    Filed: March 6, 2018
    Publication date: October 11, 2018
    Inventors: Yasuo Kato, Kyohei Naito