Patents by Inventor Mahito Matsumoto

Mahito Matsumoto 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: 20220207903
    Abstract: Provided is a system that estimates pose data of a person with high accuracy at low cost. At a time step at which image data is to be captured and obtained, a pose data generation system obtains pose data based on the image data. At a time step at which image data is not to be obtained, the pose data generation system predicts pose data at a current time step from a previous time step using IMU data and performs interpolation processing to obtain pose data. Thus, even when a rate of obtaining the image data is low, the pose data generation system performs the above interpolation processing using IMU data to obtain pose data with a high frame rate.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 30, 2022
    Applicant: MegaChips Corporation
    Inventor: Mahito MATSUMOTO
  • Publication number: 20220129729
    Abstract: Provided is a processor for a neural network whose high-performance compact model can be incorporated into low-spec devices such as embedded devices or mobile devices without requiring re-training. The processor for a neural network, which uses a multi-valued basis matrix, widens the range of integer values that can be taken by each element of the multi-valued basis matrix; thus, the number of dimensions (the number of elements) of a scaling coefficient vector is reduced accordingly. The elements of the scaling coefficient vector are real numbers, and thus reducing the amount of processing of real number calculation processing allows for reducing the number of dimensions (the number of elements) of the scaling coefficient vector. As a result, this neural network processor significantly reduces the amount of calculation processing while ensuring the calculation accuracy when performing matrix calculation processing using the binary basis matrix.
    Type: Application
    Filed: January 10, 2022
    Publication date: April 28, 2022
    Applicant: MegaChips Corporation
    Inventors: Mahito MATSUMOTO, Koji ISHIO, Hironobu FUJIYOSHI
  • Patent number: 10545031
    Abstract: A portable terminal device provided with: a gyro sensor measuring an angular velocity to acquire angular velocity information; an acceleration sensor measuring an acceleration to acquire acceleration information; a camera capturing an image of a subject in surroundings to acquire image information; a vector calculation unit calculating a motion vector of the subject based on the image information; a correlation decision unit deciding a relative relation between a traveling direction by a walking motion of the user and an image-capturing direction of the camera in accordance with the angular velocity information and the acceleration information; a rectilinear walking decision unit deciding whether the user is in a rectilinear state in accordance with the calculated motion vector of the subject and correlation decision information; and a correction unit correcting the angular velocity information acquired by the gyro sensor in response to decision that the user is in the rectilinear state.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 28, 2020
    Assignee: MEGACHIPS CORPORATION
    Inventor: Mahito Matsumoto
  • Patent number: 10191739
    Abstract: A microprocessor unit (MPU) connected to external sensors is provided with an interface unit that acquires detection information acquired by the external sensors and a digital signal processor (DSP) that estimates the state of a target object on the basis of the detection information acquired by the interface part and generates state information. The DSP is provided with a SIMD type arithmetic processing circuitry that processes a plurality of information with one command and is provided with single precision floating point computing units. The interface part outputs the state information generated by the DSP to an externally provided main processor. Therefore, power consumption can be reduced.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: January 29, 2019
    Assignee: MEGACHIPS CORPORATION
    Inventors: Mahito Matsumoto, Tomoshige Kato, Takehiro Yoshimura, Takio Yamaoka, Yusuke Sasaki, Shingo Hamaguchi
  • Publication number: 20170010891
    Abstract: A microprocessor unit (MPU) connected to external sensors is provided with an interface unit that acquires detection information acquired by the external sensors and a digital signal processor (DSP) that estimates the state of a target object on the basis of the detection information acquired by the interface part and generates state information. The DSP is provided with a SIMD type arithmetic processing circuitry that processes a plurality of information with one command and is provided with single precision floating point computing units. The interface part outputs the state information generated by the DSP to an externally provided main processor. Therefore, power consumption can be reduced.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Applicant: MegaChips Corporation
    Inventors: Mahito Matsumoto, Tomoshige Kato, Takehiro Yoshimura, Takio Yamaoka, Yusuke Sasaki, Shingo Hamaguchi
  • Patent number: 9516469
    Abstract: A positioning system is provided with a cell phone, a ticket gate having a known absolute position, and a housing of the ticket gate which regulates a traveling direction of a user to be a reference direction.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: December 6, 2016
    Assignee: MegaChips Corporation
    Inventor: Mahito Matsumoto
  • Publication number: 20160011004
    Abstract: A portable terminal device carried by a user is provided with: a gyro sensor measuring an angular velocity to acquire angular velocity information; an acceleration sensor measuring an acceleration to acquire acceleration information; a camera capturing an image of a subject in surroundings to acquire image information; a vector calculation unit calculating a motion vector of the subject based on the image information; a correlation decision unit deciding a relative relation between a traveling direction by a walking motion of the user and an image-capturing direction of the camera in accordance with the angular velocity information and the acceleration information; a rectilinear walking decision unit deciding whether the user is in a rectilinear state in accordance with the calculated motion vector of the subject and correlation decision information; and a correction unit correcting the angular velocity information acquired by the gyro sensor in response to decision that the user is in the rectilinear state.
    Type: Application
    Filed: September 24, 2015
    Publication date: January 14, 2016
    Applicant: MegaChips Corporation
    Inventor: Mahito MATSUMOTO
  • Publication number: 20150042451
    Abstract: A positioning system is provided with a cell phone, a ticket gate having a known absolute position, and a housing of the ticket gate which regulates a traveling direction of a user to be a reference direction.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 12, 2015
    Applicant: MegaChips Corporation
    Inventor: Mahito Matsumoto