Patents by Inventor Shigeru Akamatsu

Shigeru Akamatsu 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: 11507181
    Abstract: An input apparatus is provided that includes a determiner that determines a reference plane, which has a plurality of virtual keys, based on fingertip positions of at least three fingers from among fingertip positions of a plurality of fingers in an initial state; a virtual key setter that sets on the reference plane, a plurality of detection ranges that respectively correspond to the plurality of virtual keys and that each detect a pressing of a corresponding virtual key based on a fingertip position of a specific finger from among the fingertip positions; and a pressed key specifier that specifies a virtual key that is pressed, from among the plurality of virtual keys, according to a positional relationship between the fingertip positions of the plurality of fingers in an input operation, and the plurality of detection ranges set on the reference plane for each of the plurality of virtual keys.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: November 22, 2022
    Assignee: NTT DOCOMO, INC.
    Inventors: Shigeru Akamatsu, Koichi Asano
  • Patent number: 11449135
    Abstract: A terminal apparatus includes: an image capture device that captures an image of a direction that a user faces; a display controller configured to synthesize an image of a pointer captured by the image capture device with an image of a virtual or real space, to display the synthesized image on a display device; a first determiner that determines whether the pointer in the space displayed on the display device at a first time point satisfies an initial condition; an operation controller that stores reference size information relating to a size of the pointer in association with a reference distance in a storage device, with the size of the pointer being as in a case in which it is determined that the initial condition is satisfied; and a second determiner that compares a size of the pointer in the space at a second time point after the initial condition is satisfied with the size indicated by the reference size information, to determine whether the pointer is at a position that is closer than a point at the re
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: September 20, 2022
    Assignee: NTT DOCOMO, INC.
    Inventors: Shigeru Akamatsu, Koichi Asano
  • Publication number: 20220113791
    Abstract: A terminal apparatus has a first determiner that determines whether a specific object with a two-dimensional manipulation plane has appeared inside a viewing frame of a virtual space provided to a user; a second determiner that, in a case in which it is determined that the specific object has appeared inside the viewing frame, determines whether the specific object overlaps a specific point inside the viewing frame; and a display controller that: in a case in which it is determined that the specific object overlaps the specific point, control the display device to display in the viewing frame a two-dimensional pointer movable relative to the two-dimensional manipulation plane, and in a case in which it is determined that the specific object does not appear inside the viewing frame, control the display device to display in the viewing frame a three-dimensional pointer that moves within the virtual space three dimensionally.
    Type: Application
    Filed: June 10, 2019
    Publication date: April 14, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Shigeru AKAMATSU, Koichi ASANO
  • Publication number: 20210303061
    Abstract: A terminal apparatus includes: an image capture device that captures an image of a direction that a user faces; a display controller configured to synthesize an image of a pointer captured by the image capture device with an image of a virtual or real space, to display the synthesized image on a display device; a first determiner that determines whether the pointer in the space displayed on the display device at a first time point satisfies an initial condition; an operation controller that stores reference size information relating to a size of the pointer in association with a reference distance in a storage device, with the size of the pointer being as in a case in which it is determined that the initial condition is satisfied; and a second determiner that compares a size of the pointer in the space at a second time point after the initial condition is satisfied with the size indicated by the reference size information, to determine whether the pointer is at a position that is closer than a point at the re
    Type: Application
    Filed: June 10, 2019
    Publication date: September 30, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Shigeru AKAMATSU, Koichi ASANO
  • Publication number: 20210173473
    Abstract: An input apparatus 10 has: a determiner 33 configured to determine a reference plane, on which a plurality of virtual keys are arranged, based on fingertip positions of at least three fingers from among fingertip positions of a plurality of fingers in an initial state; a virtual key setter 34 configured to set, on the reference plane, a plurality of detection ranges that correspond to respective ones of the plurality of virtual keys and that each detect a pressing of a corresponding virtual key based on a fingertip position of a specific finger from among the fingertip positions of the at least three fingers in the initial state; and a pressed key specifier 35 configured to specify a virtual key that is pressed, from among the plurality of virtual keys, according to a positional relationship between the fingertip positions of the plurality of fingers in an input operation, and the plurality of detection ranges set on the reference plane for each of the plurality of virtual keys.
    Type: Application
    Filed: June 11, 2019
    Publication date: June 10, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Shigeru AKAMATSU, Koichi ASANO
  • Patent number: 5339816
    Abstract: A ultrasonic Doppler blood flow monitoring system is disclosed. The ultrasonic Doppler blood flow monitoring system comprises: a catheter to be inserted into a blood vessel; at least two ultrasonic transducers provided on the catheter and arranged for transmitting ultrasonic waves toward blood flow at two different angles of incidence with respect to blood flow direction and then receiving the reflected ultrasonic waves, to obtain two ultrasonic Doppler shift frequency signals due to blood flow; and a calculating section for calculating the velocity of flowing blood on the basis of the received Doppler shift frequency signals. Therefore, even if the catheter is not placed in parallel to the blood flow direction at a bent portion of a blood vessel, it is possible to continuously calculate the velocity of flowing blood accurately.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: August 23, 1994
    Assignees: Aloka Co., Ltd., Shigeru Akamatsu
    Inventors: Shigeru Akamatsu, Yuji Kondo
  • Patent number: 4777665
    Abstract: A quick-release necktie comprising a preliminarily tied necktie base having a knot, neckbands extending of both sides of the knot and a pair of quick-releasable male and female fastening means attached to the ends of the neckbands. The male fastening means is formed of a tongue-like plug portion having wedge-form, captively engaging projections on both faces. The female fastening means is formed of a socket portion including a pair of juxtaposed plate-like clip members which opposedly face the tongue-like plug portion, the clip members having clutching means capable of fitting the projections thereto in a rebound manner. Otherwise, the male fastening means comprises a flat bit-form, captive pin member whereas the female fastening means comprises detent members capable of fitting the pin member thereto in a rebound manner.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: October 18, 1988
    Assignee: Osaka Necktie Hosei Kabushiki Kaisha
    Inventor: Shigeru Akamatsu