Patents by Inventor Masaki Kitahara

Masaki Kitahara 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: 10669445
    Abstract: The present invention provides a copolymer obtainable by polymerizing a monomer mixture which contains at least compounds of the following formulae (A), (B) and (C), wherein Ta, Tb, Tc, Ua1, Ua2, Ub1, Ub2 and Ub3, Qa, Qb and Qc, Ra, Rb and Rc, An? and m are as defined in Specification and Claims, and so on. The copolymer of the present invention can be utilized as an ion complex material excellent in a function of inhibiting adhesion of a biological substance.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 2, 2020
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshiomi Hiroi, Natsuki Abe, Taito Nishino, Masaki Kitahara
  • Publication number: 20200158547
    Abstract: A physical quantity measurement device measures a physical quantity of a fluid. A detection unit has a physical quantity detector that detects a physical quantity of the fluid in a measurement flow channel. A housing accommodates at least a part of the detection unit and forms the measurement flow channel. The housing includes a housing attachment that is attached to a predetermined attaching target, and a position holder holding a position of the detection unit by contacting the detection unit. The housing includes an inward part positioned inward of the attaching target and an outward part positioned outward of the attaching target. The position holder is provided inward of the housing attachment in an alignment direction along which the inward part and the outward part are aligned.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Junzo YAMAGUCHI, Noboru KITAHARA, Hiroshi TAGAWA, Masaki INOUE, Hiroyuki AKUZAWA
  • Publication number: 20200158550
    Abstract: An air flow meter includes an inward part that is positioned inward of an intake pipe and an outward part that is positioned not inward but outward of the intake pipe. The air flow meter further includes a first detector provided in the inward part, and a second detector provided at a position closer to the outward part than the first detector.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Junzo YAMAGUCHI, Noboru KITAHARA, Hiroshi TAGAWA, Masaki INOUE, Hajime MASHITA, Takashi ENOMOTO
  • Patent number: 10327003
    Abstract: The computational complexity when a block configuration in an encoding target region is determined is reduced while the degradation of coding efficiency is suppressed. A video encoding apparatus includes a block selecting unit which selects each of blocks obtained by recursively dividing an encoding target block as a target block in a predetermined sequence, a block size acquiring unit which acquires the smallest block size in an adjacent block for the selected target block, an evaluation value calculating unit which calculates an evaluation value of the target block if a block size of the target block matches any one of the acquired block size, the block size one level higher than the acquired block size, and the block size one level lower than the acquired block size, and a block configuration determining unit which determines a combination of the blocks constituting the region within the encoding target block based on the evaluation value.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: June 18, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shinobu Kudo, Masaki Kitahara, Atsushi Shimizu, Hiroshi Fujii, Mayuko Watanabe
  • Patent number: 10085018
    Abstract: An image encoding apparatus capable of reducing the computational complexity in intra-prediction of an encoding optimization process is provided. The image encoding apparatus includes a reference pixel generation unit that generates reference pixels from predicted pixels of neighboring pixels and pixels of an original image for intra-prediction directions, a pseudo intra-predicted pixel generation unit that generates pseudo intra-predicted pixels from the reference pixels and the intra-prediction directions, a coding cost calculation unit that calculates coding costs for the intra-prediction directions from errors between the pseudo intra-predicted pixels and the pixels of the original image and generated bit amounts when the pseudo intra-predicted pixels are generated, and an intra-prediction direction setting unit that sets an intra-prediction direction corresponding to the lowest coding cost among the coding costs as an optimal intra-prediction direction.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: September 25, 2018
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Mayuko Watanabe, Masaki Kitahara, Atsushi Shimizu
  • Patent number: 10051270
    Abstract: In an intra-picture, a predetermined region is set as a normal encoding region, and a region other than the predetermined region is set as a simplified encoding region. In a subsequent picture, the normal encoding region is set as a larger region including a normal encoding region of a previous picture, and a region other than the normal encoding region is set as a simplified encoding region. In each picture, normal encoding is performed on a block of the normal encoding region, and simplified encoding in which a generated code amount and a computation amount are smaller than in the normal encoding is performed on a block of the simplified encoding region.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: August 14, 2018
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Masaki Kitahara, Atsushi Shimizu, Ken Nakamura, Seisuke Kyochi, Naoki Ono
  • Patent number: 9970077
    Abstract: In an autoclave in a high pressure acid leaching process in which starting material slurry and sulfuric acid are stirred by stirring machines in each compartment in the autoclave partitioned by partition walls to proceed leaching, and slurry is transferred from a compartment on an upstream side to a compartment on a downstream side to sequentially proceed leaching, wherein starting material slurry supply tubes having the starting material slurry discharge ports and sulfuric acid supply tubes having sulfuric acid discharge ports are alternately disposed on a perimeter of stirring blades of the stirring machine provided in the compartment at an upstream end, and the starting material slurry and sulfuric acid are added to the compartment at the upstream end from the starting material slurry discharge ports and the sulfuric acid discharge ports positioned higher than an uppermost part of the stirring blades and lower than a contained liquid surface.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: May 15, 2018
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Satoshi Matsubara, Osamu Nakai, Yoji Kyoda, Takashi Sakamoto, Koichiro Maki, Masaki Kitahara, Haruo Ishikawa
  • Patent number: 9906803
    Abstract: A quantization control apparatus provided in a video encoding apparatus which utilizes intra slices. The quantization control apparatus includes a similarity computation device that computes similarity between an intra slice region of an encoding target picture and an intra slice region of each of previously-encoded pictures, where the similarity is an index determined such that the closer the images of the two different intra slices, the higher the similarity; a picture selection device that selects a picture having the highest similarity from among the previously-encoded pictures, based on the similarity computed by the similarity computation device; and a quantization step determination device that determines a quantization step used for encoding the encoding target picture, based on encoding information for the picture selected by the picture selection device.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: February 27, 2018
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Masaki Kitahara, Atsushi Shimizu, Naoki Ono, Seisuke Kyochi
  • Publication number: 20180008646
    Abstract: The present invention provides a method for culturing vascular smooth muscle cells, which includes culturing vascular smooth muscle cells in suspension in a medium composition comprising a structure capable of culturing cells or tissues by suspending them. In addition, the present invention provides a method for suppressing proliferation of vascular smooth muscle cells, which includes culturing vascular smooth muscle cells in suspension in the medium composition. Furthermore, the present invention provides a method for preserving vascular smooth muscle cells, which includes suspending vascular smooth muscle cells in the medium composition. The structure contains, for example, deacylated gellan gum.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 11, 2018
    Applicants: NISSAN CHEMICAL INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
    Inventors: Itsuko ISHII, Tatsuro KANAKI, Masaki KITAHARA
  • Publication number: 20170349777
    Abstract: The present invention provides a copolymer obtainable by polymerizing a monomer mixture which contains at least compounds of the following formulae (A), (B) and (C), wherein Ta, Tb, Tc, Ua1, Ua2, Ub1, Ub2 and Ub3, Qa, Qb and Qc, Ra, Rb and Rc, An? and m are as defined in Specification and Claims, and so on. The copolymer of the present invention can be utilized as an ion complex material excellent in a function of inhibiting adhesion of a biological substance.
    Type: Application
    Filed: December 10, 2015
    Publication date: December 7, 2017
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshiomi HIROI, Natsuki ABE, Taito NISHINO, Masaki KITAHARA
  • Patent number: 9838709
    Abstract: In a moving picture encoding apparatus, a primary candidate reference motion vector-setting unit sets N primary candidate reference motion vectors. A degree of reliability calculation unit calculates the reliability of each primary candidate reference motion vector, which represents effectiveness in predicting a motion vector of a block to be decoded, using coded or decoded image information. A reference motion vector determination unit selects M (M<N) secondary candidate reference motion vectors in accordance with degree of reliability from among the N primary candidate reference motion vectors. A motion vector prediction unit creates a predictive motion vector of a block to be coded using M secondary candidate reference motion vectors with high reliability.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: December 5, 2017
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Masaki Kitahara, Atsushi Shimizu, Mayuko Watanabe
  • Patent number: 9712827
    Abstract: An object is to suppress an instantaneous increase in the computational complexity of an encoder and an information amount of an encoding result without increasing a delay even when input timing of input video is not constant and fluctuates. A frame rate control method for adjusting a frame rate of input video to a frame rate at which an encoder is able to perform encoding includes: a step of determining whether the number of pictures input in the past within a predetermined time from a time when a determination target picture of dropping is input exceeds a predetermined threshold value; and a step of discarding the determination target picture if the number of pictures exceeds the threshold value and designating the determination target picture as an encoding target if the number of pictures does not exceed the threshold value.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: July 18, 2017
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Naoki Ono, Atsushi Shimizu, Ken Nakamura, Masaki Kitahara, Seisuke Kyochi
  • Patent number: 9497481
    Abstract: In motion vector prediction encoding, the efficiency of motion vector prediction is improved and the efficiency of moving picture encoding is improved. A motion search is performed for a block to be encoded in a picture to be encoded using an encoded reference picture to calculate a motion vector. A plurality of blocks which include at least one of encoded blocks in the picture to be encoded and encoded blocks in an encoded picture and in predetermined positions relative to the position of the block to be encoded in the picture to be encoded are set as primary candidate blocks, and N primary candidate reference motion vectors are determined from motion vectors used in encoding the primary candidate blocks. The degrees of reliability of the primary candidate reference motion vectors which quantitatively represent effectiveness in motion vector prediction of the block to be encoded is calculated using encoded picture information for each of the primary candidate reference motion vectors.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: November 15, 2016
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Masaki Kitahara, Atsushi Shimizu, Mayuko Watanabe
  • Publication number: 20160330473
    Abstract: In picture encoding that generates prediction pictures from picture information of frames previously encoded and encodes picture information for each area, the encoding efficiency is improved. A plurality of motion vector candidates are stored in advance in a motion vector storage memory (107). A motion vector selection section (109) selects a motion vector to be used from the plurality of motion vectors stored in advance in the motion vector storage memory (107). A prediction picture generation section (104) generates a prediction picture from a reference picture using the selected motion vector. A differential encoding section (103) encodes a differential between the picture information of the present area and the prediction picture. A motion vector designation encoding section (110) encodes information that designates the motion vector selected by the motion vector selection section (109).
    Type: Application
    Filed: July 18, 2016
    Publication date: November 10, 2016
    Inventors: Hideaki Kimata, Masaki Kitahara
  • Patent number: 9491455
    Abstract: The encoding computational complexity and the decoding computational complexity are reduced while suppressing deterioration of coding efficiency in comparison with conventional intra divided-picture coding. A divided picture generation unit divides an input encoding target picture into blocks having the same size, and collects pixels having the same relative position in the blocks to generate divided pictures having the same size. An intra divided-picture encoding unit performs intra divided-picture encoding on some divided pictures. A reference picture selection unit selects, as a reference picture, an encoded divided picture in which a pixel position on an original picture is close in order to encode the other encoding target divided pictures. An inter divided-picture predictive encoding unit generates a predicted picture using the selected reference picture and encodes an encoding target divided picture through inter divided-picture prediction in units of divided pictures.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: November 8, 2016
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Mayuko Watanabe, Masaki Kitahara, Atsushi Shimizu
  • Patent number: 9445089
    Abstract: A video encoding device, which uses intra encoding and inter encoding with motion compensation with respect to an input video signal, includes a determination unit which determines whether the input video signal to be encoded corresponds to a stationary region, a region having minute motion, or a region having normal motion, a first encoding unit which performs inter encoding of a motion vector (0, 0) with respect to a region determined as a stationary region by the determination unit, a second encoding unit which performs motion search and inter encoding in a limited search range with respect to a region determined as a region having minute motion by the determination unit, and a third encoding unit which performs motion search and inter encoding in a normal search range with respect to a region determined as a region having normal motion by the determination unit.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: September 13, 2016
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Naoki Ono, Atsushi Shimizu, Masaki Kitahara, Seisuke Kyochi
  • Patent number: 9402087
    Abstract: In picture encoding that generates prediction pictures from picture information of frames previously encoded and encodes picture information for each area, the encoding efficiency is improved. A plurality of motion vector candidates are stored in advance in a motion vector storage memory (107). A motion vector selection section (109) selects a motion vector to be used from the plurality of motion vectors stored in advance in the motion vector storage memory (107). A prediction picture generation section (104) generates a prediction picture from a reference picture using the selected motion vector. A differential encoding section (103) encodes a differential between the picture information of the present area and the prediction picture. A motion vector designation encoding section (110) encodes information that designates the motion vector selected by the motion vector selection section (109).
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: July 26, 2016
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hideaki Kimata, Masaki Kitahara
  • Publication number: 20160182904
    Abstract: An image encoding apparatus capable of reducing the computational complexity in intra-prediction of an encoding optimization process is provided. The image encoding apparatus includes a reference pixel generation unit that generates reference pixels from predicted pixels of neighboring pixels and pixels of an original image for intra-prediction directions, a pseudo intra-predicted pixel generation unit that generates pseudo intra-predicted pixels from the reference pixels and the intra-prediction directions, a coding cost calculation unit that calculates coding costs for the intra-prediction directions from errors between the pseudo intra-predicted pixels and the pixels of the original image and generated bit amounts when the pseudo intra-predicted pixels are generated, and an intra-prediction direction setting unit that sets an intra-prediction direction corresponding to the lowest coding cost among the coding costs as an optimal intra-prediction direction.
    Type: Application
    Filed: July 22, 2014
    Publication date: June 23, 2016
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Mayuko WATANABE, Masaki KITAHARA, Atsushi SHIMIZU
  • Patent number: 9332275
    Abstract: Compared to conventional intra divided-picture encoding, deterioration in the coding efficiency is suppressed and the encoding computational complexity and the decoding computational complexity are reduced. A divided picture generating unit divides an input encoding target picture into blocks of the same size and generates divided pictures having the same size by collecting pixels having the same relative position within each block. An intra divided-picture encoding processing unit performs intra divided-picture encoding on part of the divided pictures. An inter divided-picture encoding processing unit performs inter divided-picture encoding using another encoded divided picture as a reference picture. When there are a plurality of candidates for the reference picture, a correlation direction calculating unit obtains a combination in which a correlation of a pixel on an original picture is high among combinations of encoded divided pictures and their reference pictures.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: May 3, 2016
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Mayuko Watanabe, Masaki Kitahara, Atsushi Shimizu
  • Publication number: 20160057433
    Abstract: The computational complexity when a block configuration in an encoding target region is determined is reduced while the degradation of coding efficiency is suppressed. A video encoding apparatus includes a block selecting unit which selects each of blocks obtained by recursively dividing an encoding target block as a target block in a predetermined sequence, a block size acquiring unit which acquires the smallest block size in an adjacent block for the selected target block, an evaluation value calculating unit which calculates an evaluation value of the target block if a block size of the target block matches any one of the acquired block size, the block size one level higher than the acquired block size, and the block size one level lower than the acquired block size, and a block configuration determining unit which determines a combination of the blocks constituting the region within the encoding target block based on the evaluation value.
    Type: Application
    Filed: March 18, 2014
    Publication date: February 25, 2016
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shinobu KUDO, Masaki KITAHARA, Atsushi SHIMIZU, Hiroshi FUJII, Mayuko WATANABE