Patents by Inventor Hiroki Nakahara

Hiroki Nakahara 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: 11915128
    Abstract: A tri-state neural network circuit includes, in an intermediate layer: an input value Xi to which convolution is applied; a nonzero convolution operation circuit configured to receive a weight Wi and to perform a convolution operation thereof; a sum circuit configured to take a sum of operation values each subjected to the convolution operation and a bias W0; and an activating function circuit configured to convert a signal Y generated by taking the sum, using an activating function f(u). The nonzero convolution operation circuit is configured to skip a weight Wi having a zero weight and to perform a convolution operation based on a nonzero weight and an input value Xi corresponding thereto.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: February 27, 2024
    Assignee: TOKYO ARTISAN INTELLIGENCE CO., LTD.
    Inventor: Hiroki Nakahara
  • Patent number: 11741348
    Abstract: Provided are a neural network circuit device, a neural network, a neural network processing method, and a neural network execution program, each of which does not require a bias. A binarized neural network circuit includes: an input part configured to allow input of an input node which allows input of input values x1-xn (xi) (binary), and input of weights w1-wn (wi) (binary); an XNOR gate circuit configured to receive the input values x1-xn and the weights w1-wn and to take XNOR logic; a sum circuit configured to sum XNOR logical values; a batch normalization circuit configured to correct a variance due to binarization, by extending a range of normalization and shifting a center thereof; and an activating function circuit configured to convert a signal B obtained by batch-normalizing a signal Y generated by taking the sum, by means of an activating function f sgn(B).
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 29, 2023
    Assignee: Tokyo Institute of Technology
    Inventor: Hiroki Nakahara
  • Publication number: 20210224640
    Abstract: A tri-state neural network circuit includes, in an intermediate layer: an input value Xi to which convolution is applied; a nonzero convolution operation circuit configured to receive a weight Wi and to perform a convolution operation thereof; a sum circuit configured to take a sum of operation values each subjected to the convolution operation and a bias W0; and an activating function circuit configured to convert a signal Y generated by taking the sum, using an activating function f(u). The nonzero convolution operation circuit is configured to skip a weight Wi having a zero weight and to perform a convolution operation based on a nonzero weight and an input value Xi corresponding thereto.
    Type: Application
    Filed: May 8, 2019
    Publication date: July 22, 2021
    Inventor: Hiroki NAKAHARA
  • Patent number: 10968354
    Abstract: According to the invention, an electrophoretic dispersion liquid includes at least one type of an electrophoretic particle, and a dispersion medium, in which the content of transition metal of group 8 elements derived from a catalyst which is used to generate at least one of a block copolymer (a particle surface treatment agent) used to form the electrophoretic particle and the dispersion medium is in a range of greater than 0 ppm to equal to or less than 2 ppm in the electrophoretic dispersion liquid.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: April 6, 2021
    Assignee: E Ink Corporation
    Inventors: Harunobu Komatsu, Masahiko Nakazawa, Kiyoshi Nakamura, Hiroki Nakahara
  • Patent number: 10969647
    Abstract: An electrophoretic particle includes a particle and a coating layer, in which the coating layer includes at least one of dispersibility and chargeability, and includes a polymer that connects to the particle, where the polymer includes a first functional group and is connected to the particle via a connected body, the connected body has a molecular weight of 500 or less and includes a second functional group and a third functional group, and the particle, the connected body and the polymer are connected via the chemical bond formed by reacting the first and second functional groups and the chemical bond formed by reacting the hydroxyl group and the third functional group.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: April 6, 2021
    Assignee: E Ink Corporation
    Inventors: Kozo Shitagami, Kei Kamakura, Masahiko Nakazawa, Hiroki Nakahara, Harunobu Komatsu
  • Publication number: 20200218964
    Abstract: Provided are a neural network circuit device, a neural network, a neural network processing method, and a neural network execution program, each of which does not require a bias. A binarized neural network circuit includes: an input part configured to allow input of an input node which allows input of input values x1-xn (xi) (binary), and input of weights w1-wn (wi) (binary); an XNOR gate circuit configured to receive the input values x1-xn and the weights w1-wn and to take XNOR logic; a sum circuit configured to sum XNOR logical values; a batch normalization circuit configured to correct a variance due to binarization, by extending a range of normalization and shifting a center thereof; and an activating function circuit configured to convert a signal B obtained by batch-normalizing a signal Y generated by taking the sum, by means of an activating function f sgn(B).
    Type: Application
    Filed: September 18, 2018
    Publication date: July 9, 2020
    Inventor: Hiroki NAKAHARA
  • Patent number: 10587778
    Abstract: A scanner profile previously retains process color components (such as CMYK) used for profile generation. Grid points are selected from a scanner profile corresponding to the process color components (CMYK) for any output device value of an input image. An output device value for color patch is acquired while the output device value for color patch results from adding a color (R) except the process color components (CMYK) for any output device value to the CMYK process color components retained at the selected grid points. A color patch (chart image) is generated based on the output device value for color patch.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: March 10, 2020
    Assignee: Konica Minolta. Inc.
    Inventor: Hiroki Nakahara
  • Publication number: 20200005131
    Abstract: A binarized neural network circuit includes: an input part configured to allow input of input values (binary) and weights; an XNOR gate circuit configured to receive the input values and the weights and take XNOR logic; a multibit bias input part configured to allow input of a multibit bias; a sum circuit part configured to sum each of XNOR logical values and the multibit bias; and an activation circuit part configured to output only a sign bit of a multibit signal generated by using the sum.
    Type: Application
    Filed: November 28, 2017
    Publication date: January 2, 2020
    Inventors: Hiroki NAKAHARA, Haruyoshi YONEKAWA
  • Patent number: 10506133
    Abstract: Provided are a printer, a non-transitory recording medium and a scanner profile correction method. A hardware processor chooses at least one color for each of sheets where images of a job are separately to be printed, successively from colors of a chart for a scanner profile creation. The hardware processor defines an arrangement of at least one patch of the at least one color in a blank space of each of the sheets, and instructs a print engine to print the at least one patch together with an image of the job on each of the sheets. In response to obtaining measured color values of the at least one patch printed on each sheet from an in-line scanner and an in-line spectrocolorimeter, the hardware processor updates a part of data of a scanner profile, corresponding to the at least one color, by using the obtained measured color values.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: December 10, 2019
    Assignee: Konica Minolta, Inc.
    Inventor: Hiroki Nakahara
  • Publication number: 20190256662
    Abstract: A method of manufacturing an electrophoretic particle is a method of manufacturing an electrophoretic particle including a particle and a particle surface treatment agent which is bonded to the particle, the method including preparing a mixture containing a plurality of the particles, the particle surface treatment agent, an unreacted product of a raw material used at the time of generating the particle surface treatment agent, and a reaction by-product generated at the time of generating the particle surface treatment agent, the mixture having a content of the particle surface treatment agent which is set to be equal to or greater than 70% by weight in the mixture except for the plurality of particles; and bonding the particle surface treatment agent to a surface of the particle in the mixture.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Inventors: Harunobu KOMATSU, Hiroki NAKAHARA, Masahiko NAKAZAWA, Takashi HIRAIWA, Kozo SHITAGAMI
  • Patent number: 10323128
    Abstract: A method of manufacturing an electrophoretic particle is a method of manufacturing an electrophoretic particle including a particle and a particle surface treatment agent which is bonded to the particle, the method including preparing a mixture containing a plurality of the particles, the particle surface treatment agent, an unreacted product of a raw material used at the time of generating the particle surface treatment agent, and a reaction by-product generated at the time of generating the particle surface treatment agent, the mixture having a content of the particle surface treatment agent which is set to be equal to or greater than 70% by weight in the mixture except for the plurality of particles; and bonding the particle surface treatment agent to a surface of the particle in the mixture.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: June 18, 2019
    Assignee: E Ink Corporation
    Inventors: Harunobu Komatsu, Hiroki Nakahara, Masahiko Nakazawa, Takashi Hiraiwa, Kozo Shitagami
  • Publication number: 20190089868
    Abstract: Provided are a printer, a non-transitory recording medium and a scanner profile correction method. A hardware processor chooses at least one color for each of sheets where images of a job are separately to be printed, successively from colors of a chart for a scanner profile creation. The hardware processor defines an arrangement of at least one patch of the at least one color in a blank space of each of the sheets, and instructs a print engine to print the at least one patch together with an image of the job on each of the sheets. In response to obtaining measured color values of the at least one patch printed on each sheet from an in-line scanner and an in-line spectrocolorimeter, the hardware processor updates a part of data of a scanner profile, corresponding to the at least one color, by using the obtained measured color values.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 21, 2019
    Applicant: KONICA MINOLTA, INC.
    Inventor: Hiroki NAKAHARA
  • Publication number: 20190062573
    Abstract: According to the invention, an electrophoretic dispersion liquid includes at least one type of an electrophoretic particle, and a dispersion medium, in which the content of transition metal of group 8 elements derived from a catalyst which is used to generate at least one of a block copolymer (a particle surface treatment agent) used to form the electrophoretic particle and the dispersion medium is in a range of greater than 0 ppm to equal to or less than 2 ppm in the electrophoretic dispersion liquid.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Harunobu KOMATSU, Masahiko NAKAZAWA, Kiyoshi NAKAMURA, Hiroki NAKAHARA
  • Patent number: 10150877
    Abstract: According to the invention, an electrophoretic dispersion liquid includes at least one type of an electrophoretic particle, and a dispersion medium, in which the content of transition metal of group 8 elements derived from a catalyst which is used to generate at least one of a block copolymer (a particle surface treatment agent) used to form the electrophoretic particle and the dispersion medium is in a range of greater than 0 ppm to equal to or less than 2 ppm in the electrophoretic dispersion liquid.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: December 11, 2018
    Assignee: E Ink Corporation
    Inventors: Harunobu Komatsu, Masahiko Nakazawa, Kiyoshi Nakamura, Hiroki Nakahara
  • Publication number: 20180278806
    Abstract: A scanner profile previously retains process color components (such as CMYK) used for profile generation. Grid points are selected from a scanner profile corresponding to the process color components (CMYK) for any output device value of an input image. An output device value for color patch is acquired while the output device value for color patch results from adding a color (R) except the process color components (CMYK) for any output device value to the CMYK process color components retained at the selected grid points. A color patch (chart image) is generated based on the output device value for color patch.
    Type: Application
    Filed: March 21, 2018
    Publication date: September 27, 2018
    Applicant: Konica Minolta, Inc.
    Inventor: Hiroki Nakahara
  • Patent number: 9958753
    Abstract: An electrophoresis dispersion liquid according to the aspect of the invention contains at least one type of electrophoretic particles and a dispersion medium and, in the electrophoresis dispersion liquid, the content of the electrophoretic particles is 10 weight % or more to 30 weight % or less. Furthermore, the electrophoretic particles have base particles and a polymer (particle surface treatment agent) linked with the base particles and, in the electrophoretic particles, the content of the polymer is 5 weight % or more to 15 weight % or less.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: May 1, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kozo Shitagami, Hiroki Nakahara, Harunobu Komatsu, Takashi Hiraiwa, Masahiko Nakazawa
  • Publication number: 20170235205
    Abstract: An electrophoresis dispersion liquid according to the aspect of the invention contains at least one type of electrophoretic particles and a dispersion medium and, in the electrophoresis dispersion liquid, the content of the electrophoretic particles is 10 weight % or more to 30 weight % or less. Furthermore, the electrophoretic particles have base particles and a polymer (particle surface treatment agent) linked with the base particles and, in the electrophoretic particles, the content of the polymer is 5 weight % or more to 15 weight % or less.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 17, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kozo SHITAGAMI, Hiroki NAKAHARA, Harunobu KOMATSU, Takashi HIRAIWA, Masahiko NAKAZAWA
  • Publication number: 20170184939
    Abstract: An electrophoretic particle includes a base particle and a block copolymer (a particle surface treatment agent) which is bonded to the base particle (a particle), in which the block copolymer includes a dispersion portion derived from one first monomer formed of a siloxane-based compound, and a bonding portion derived from two or more second monomers having a functional group, and is bonded to the base particle with the reaction of the functional group in the bonding portion. In addition, a weight-average molecular weight of the dispersion portion is in a range of 15,000 to 150,000.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 29, 2017
    Inventors: Masahiko Nakazawa, Takashi Hiraiwa, Hiroki Nakahara, Harunobu Komatsu, Kozo Shitagami
  • Publication number: 20170158822
    Abstract: A method of manufacturing an electrophoretic particle is a method of manufacturing an electrophoretic particle including a particle and a particle surface treatment agent which is bonded to the particle, the method including preparing a mixture containing a plurality of the particles, the particle surface treatment agent, an unreacted product of a raw material used at the time of generating the particle surface treatment agent, and a reaction by-product generated at the time of generating the particle surface treatment agent, the mixture having a content of the particle surface treatment agent which is set to be equal to or greater than 70% by weight in the mixture except for the plurality of particles; and bonding the particle surface treatment agent to a surface of the particle in the mixture.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 8, 2017
    Inventors: Harunobu Komatsu, Hiroki Nakahara, Masahiko Nakazawa, Takashi Hiraiwa, Kozo Shitagami
  • Publication number: 20170081559
    Abstract: A double-sided adhesive tape has an adhesive member which is formed in the shape of a film and whose both surfaces in a thickness direction have an adhesive force and a pair of separation films which are arranged so as to sandwich the adhesive member in the thickness direction. The double-sided adhesive tape is formed so as to have a non-planar shape and to reduce the occurrence of wrinkles in the adhesive member when the adhesive member is adhered to a non-planar adherend.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Inventors: Hiroki Nakahara, Yoshikazu Soeda