Patents by Inventor Koji Iwase

Koji Iwase 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).

  • Publication number: 20210316738
    Abstract: [Solution] A driver abnormality determination system includes circuitry configured to detect a driving operation of a driver, detect behavior of the driver's head and motion of eyeballs and/or movement of a sightline of the driver, recognize a driving scene in which the vehicle is driven; a memory that stores a sensor table of a relationship between the driving scene and detected values to be used to determine a driver abnormality; and determine the driver abnormality based on the sensor table, the driving scene, the driving operation and the behavior.
    Type: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
  • Publication number: 20210316737
    Abstract: A driver abnormality determination apparatus includes circuitry configured to detect a driver state of a driver of a vehicle, detect a driving operation of the driver, detect an exertion level of an involuntary function of the driver based on the driver state, detect an exertion level of a driving function of the driver based on the driving operation; and determine driver abnormality based on the execution level of the involuntary function and the execution level of the driving function. On condition that a function level of one of the execution level of the involuntary function and the execution level of the driving function is equal to or lower than a specified determination criterion, the circuitry is configured to relax a determination criterion for the other function level.
    Type: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
  • Publication number: 20210316736
    Abstract: The driver abnormality determination apparatus includes circuitry configured to detect a driver state of a driver of a vehicle, recognize a driving scene of the vehicle based on external environment information, and detect a state of an involuntary function of the driver, detect a state of a base function that serves as the basis of a driving operation by the driver, detect a state of a predictive driving function of the driver, and detect an abnormality of the driver based on the states each of the involuntary function, the base function, the predictive function, and a determination function based on a detection target item.
    Type: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
  • Publication number: 20210290129
    Abstract: A state of a user of a mobile terminal having a display for displaying an image may be estimated. A sightline detection detector detects a user's sightline of a mobile terminal that has a display for displaying an image. Processing circuitry is configured to estimate a state of the user including an attention function degraded state based on motion of the user's sightline with respect to the image displayed on the display of the mobile terminal.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Kazuo SAKAMOTO, Akihide TAKAMI
  • Publication number: 20210290128
    Abstract: A state of a user of a mobile terminal having a display for displaying an image maybe estimated. A sightline detector detects a sightline of the user of a mobile terminal and processing circuitry is configured to estimate a state of the user. The processing circuitry is configured to determine a top-down index value that is correlated with an attention source amount allocated to top-down attention of the user with respect to an image displayed on a display of the mobile terminal. The processing circuitry is configured to determine a bottom-up index value correlated with the attention source amount allocated to bottom-up attention of the user with respect to the image displayed on the display. The processing circuitry is configured to estimate the user state including an attention function degraded state based on the top-down index value and the bottom-up index value.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Kazuo SAKAMOTO, Akihide TAKAMI
  • Publication number: 20210253111
    Abstract: A device, method and computer program product provide driver state estimation. A first index value correlated with an amount of an attention source allocated to top-down attention of a driver and a second index value correlated with an amount of the attention source allocated to bottom-up attention of the driver are determined. The driver state including an attention function degraded state of the driver is estimated based on the first index value and the second index value. A vehicle being operated by the driver may be controlled in accordance with the estimated driver state.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Koji IWASE
  • Publication number: 20210253110
    Abstract: A device, method and computer program product provide driver state estimation. A first index value correlated with an amount of an attention source allocated to top-down attention of a driver in a first area where the top-down attention of the driver is predominant and a second index value correlated with an amount of the attention source allocated to bottom-up attention of the driver in a second area where the bottom-up attention of the driver is predominant are determined. The driver state including an attention function degraded state of the driver may be estimated based on the first index value in the first area and the second index value in the second area. A vehicle being operated by the driver may be controlled in accordance with the estimated driver state.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Koji IWASE
  • Patent number: 10717447
    Abstract: The present invention includes: a visual perception target determination unit for determining a visual perception target by using a saliency model for determining that an object to be visually perceived at a glance is a visual perception target, a surprise model for determining that an object behaving abnormally is a visual perception target, and a normative model for determining that an object to be visually perceived by a viewing action of a driver serving as a norm is a visual perception target; and a visual guidance unit for determining whether or not an overlooked visual perception to which a line-of-sight direction detected by a line-of-sight detection unit is not directed is present, and guiding a line-of-sight of a driver toward the overlooked visual perception target, when the overlooked visual perception target is present.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 21, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Tadashi Isa, Masatoshi Yoshida, Richard Veale, Yusaku Takeda, Toshihiro Hara, Koji Iwase, Atsuhide Kishi, Kazuo Nishikawa, Takahide Nozawa
  • Patent number: 10274727
    Abstract: An edge of, for example, a windshield which serves as range of vision is defined by front pillars, a roof, and a dashboard. A modification area is provided at a peripheral portion of the windshield. In the modification area, visual saliency (visual conspicuousness) can be partially increased by means of, e.g., liquid crystals.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: April 30, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Koji Iwase, Yusaku Takeda, Toshihiro Hara, Atsuhide Kishi, Kazuo Nishikawa, Takahide Nouzawa
  • Publication number: 20180362053
    Abstract: The present invention includes: a visual perception target determination unit for determining a visual perception target by using a saliency model for determining that an object to be visually perceived at a glance is a visual perception target, a surprise model for determining that an object behaving abnormally is a visual perception target, and a normative model for determining that an object to be visually perceived by a viewing action of a driver serving as a norm is a visual perception target; and a visual guidance unit for determining whether or not an overlooked visual perception to which a line-of-sight direction detected by a line-of-sight detection unit is not directed is present, and guiding a line-of-sight of a driver toward the overlooked visual perception target, when the overlooked visual perception target is present.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 20, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tadashi ISA, Masatoshi YOSHIDA, Richard VEALE, Yusaku TAKEDA, Toshihiro HARA, Koji IWASE, Atsuhide KISHI, Kazuo NISHIKAWA, Takahide NOZAWA
  • Publication number: 20180031831
    Abstract: An edge of, for example, a windshield which serves as range of vision is defined by front pillars, a roof, and a dashboard. A modification area is provided at a peripheral portion of the windshield. In the modification area, visual saliency (visual conspicuousness) can be partially increased by means of, e.g., liquid crystals.
    Type: Application
    Filed: July 21, 2017
    Publication date: February 1, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Koji IWASE, Yusaku TAKEDA, Toshihiro HARA, Atsuhide KISHI, Kazuo NISHIKAWA, Takahide NOUZAWA
  • Publication number: 20170010555
    Abstract: A liquid developer for electrophotography or electrostatic recording includes colored resin particles, which are constituted by at least a pigment, a binder resin containing acid group-containing resin, a basic group-containing pigment dispersion agent, and a granulating aid, with the colored resin particles formed in an insulating solvent by utilizing the coacervation method. A carbodiimide compound having at least one carbodiimide group is used as the granulating aid, with the ratio of the number of active hydrogens in the acid group-containing resin to the number of carbodiimide groups in the carbodiimide compound adjusted to 1:0.01 or more but less than 1:1.00, and the colored resin particles are dispersed in the insulating solvent by a particle dispersion agent. The liquid developer has good uniformity, preservation stability, fixing property, and electrophoretic migration property of particles.
    Type: Application
    Filed: February 4, 2015
    Publication date: January 12, 2017
    Inventors: Koji IWASE, Katsutoshi OKAMOTO, Hideo SHIBATA, Hirohito MAEDA, Tomoaki INOUE
  • Patent number: 8722302
    Abstract: The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method. A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 13, 2014
    Assignee: Sakata Inx Corp.
    Inventors: Hirohito Maeda, Katsutoshi Okamoto, Takaaki Yodo, Naoya Inazumi, Koji Iwase
  • Patent number: 8399170
    Abstract: Production process for a liquid developer for use in electrophotograph or electrostatic recording by coacervation method. The process can produce a liquid developer in which a coloring agent (e.g., a pigment) is included completely within a resin particle by distillation of a solvent while retaining the state where the coloring agent is finely dispersed and the resulting colored resin particle is small in particle size with excellent dispersion stability, and excellent optical properties.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: March 19, 2013
    Assignee: Sakata Inx Corp.
    Inventors: Koji Iwase, Hirohito Maeda, Takaaki Yodo
  • Patent number: 8334341
    Abstract: An object of the present invention is to provide a carbodiimide type compound having high dispersibility and dispersion stability of pigments, fine resin particles, and pigment-resin composite fine particles particularly in a silicone dispersion medium; a pigment dispersion composition and a pigment-resin composite fine particles-containing dispersion composition preferably usable in a wide range of fields such as inks for solvent ink jet, liquid developers, and the like by using the compound; and a liquid developer using such a pigment dispersion composition and/or pigment-resin composite fine particles-containing dispersion composition. The present invention provides a carbodiimide type compound obtained by introducing a polysiloxane chain by reaction of a functional group of a polysiloxane chain-containing compound having the functional group reactive with a carbodiimide group with a carbodiimide group of a carbodiimide compound having a carbodiimide equivalent weight of 100 to 50000.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: December 18, 2012
    Assignee: Sakata INX Corp.
    Inventors: Hideo Shibata, Koji Iwase, Hirohito Maeda, Takaaki Yodo
  • Patent number: 8004424
    Abstract: A driving assist device for a vehicle of the present invention, comprising an object detection device to detect an object to be recognized around the vehicle, an eyes-direction specification device to specify a direction of driver's eyes, and a mark indication device to indicate a specified-shape mark at a specified portion of a windshield that is located in the direction of the driver's eyes specified by the eyes-direction specification device and then to indicate the specified-shape mark in such a manner that the mark overlaps with the object. Accordingly, the driver can be properly made recognize any object in danger even in case the driver's eyes are not directed to such object.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: August 23, 2011
    Assignee: Mazda Motor Corporation
    Inventors: Satoru Matsuoka, Haruhisa Kore, Koji Iwase, Takanori Kume
  • Publication number: 20100323291
    Abstract: The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method. A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.
    Type: Application
    Filed: September 26, 2008
    Publication date: December 23, 2010
    Applicant: SAKATA INX CORP.
    Inventors: Hirohito Maeda, Katsutoshi Okamoto, Takaaki Yodo, Naoya Inazumi, Koji Iwase
  • Patent number: 7851117
    Abstract: It is an object of the present invention to provide a liquid developer in which in liquid developers for electrophotography or electrostatic recording obtained using the coacervation method, electric resistance of the liquid developer and the electrophoretic property or the charging characteristic of the toner particles are adequately maintained, and the dispersibility of a pigment and the dispersion stability of the toner particles are good. A liquid developer formed by dispersing colored resin particles comprising at least a pigment, a dispersant and a resin in a hydrocarbon insulating medium using a coacervation method, wherein said dispersant is a carbodiimide compound having at least one basic nitrogen-containing group and at least one polyester side chain introduced through a reaction with a carbodiimide group in its molecule, and said resin is an acid group-containing resin and the acid value of the resin is 1 to 100.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: December 14, 2010
    Assignee: Sakata Inx Corp.
    Inventors: Takaaki Yodo, Katsutoshi Okamoto, Hideo Shibata, Koji Iwase
  • Publication number: 20100136475
    Abstract: Disclosed is a process for production of a liquid developer for use in electrophotograph or electrostatic recording by coacervation method. The process can produce a liquid developer in which a coloring agent (e.g., a pigment) is included completely within a resin particle by distillation of a solvent while retaining the state where the coloring agent are finely dispersed and the resulting colored resin particle is small in particle size and has an excellent dispersion stability, and which has excellent optical properties.
    Type: Application
    Filed: June 26, 2006
    Publication date: June 3, 2010
    Inventors: Koji Iwase, Hirohito Maeda, Takaaki Yodo
  • Publication number: 20100136474
    Abstract: Disclosed is a process for production of a liquid developer for use in electrophotograph or electrostatic recording by coacervation method. The process can produce a liquid developer in which a coloring agent (e.g., a pigment) is included completely within a resin particle by distillation of a solvent while retaining the state where the coloring agent are finely dispersed and the resulting colored resin particle is small in particle size and has an excellent dispersion stability, and which has excellent optical properties.
    Type: Application
    Filed: June 26, 2006
    Publication date: June 3, 2010
    Inventors: Koji Iwase, Hirohito Maeda, Takaaki Yodo