Patents by Inventor Katsuya Mugishima

Katsuya Mugishima 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: 11619911
    Abstract: A timepiece includes a first motor having a rotor for rotating a hour hand, and a first train wheel group having a wheel gear rotating based on rotation of the rotor. The first train wheel group includes a third intermediate hour pinion, a first intermediate hour pinion, a twenty four hour wheel gear having a first reference load unit disposed to mesh with the third intermediate hour pinion so that a load received by the rotor fluctuates in a case where the twenty four hour wheel gear meshes with the third intermediate hour pinion, and rotating at a first reduction ratio with respect to the rotor, and a second intermediate hour wheel gear having a second reference load unit disposed to mesh with the first intermediate hour pinion so that the load received by the rotor fluctuates in a case where the second intermediate hour wheel gear meshes with the first intermediate hour pinion, and rotating at a second reduction ratio lower than the first reduction ratio with respect to the rotor.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 4, 2023
    Assignee: SEIKO WATCH KABUSHIKI KAISHA
    Inventors: Masayuki Kawata, Katsuya Mugishima, Ken Sato, Yuya Tanaka
  • Patent number: 11415940
    Abstract: A timepiece movement includes a control unit that determines a position of an indicating hand by detecting a rotation state of a rotor, and a train wheel that transmits a drive force of a stepping motor to the indicating hand, and that has a first gear, and a second gear and a third gear which mesh with the first gear. The first gear has a reference load unit that causes fluctuations in a load applied to the rotor in each case of meshing with the second gear and the third gear. A first line segment which connects a center of the first gear and a center of the second gear to each other forms an angle smaller than 180° with a second line segment which connects the center of the first gear and a center of the third gear.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: August 16, 2022
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Tomohiro Ihashi, Katsuya Mugishima
  • Publication number: 20210116867
    Abstract: A timepiece includes a first motor having a rotor for rotating a hour hand, and a first train wheel group having a wheel gear rotating based on rotation of the rotor. The first train wheel group includes a third intermediate hour pinion, a first intermediate hour pinion, a twenty four hour wheel gear having a first reference load unit disposed to mesh with the third intermediate hour pinion so that a load received by the rotor fluctuates in a case where the twenty four hour wheel gear meshes with the third intermediate hour pinion, and rotating at a first reduction ratio with respect to the rotor, and a second intermediate hour wheel gear having a second reference load unit disposed to mesh with the first intermediate hour pinion so that the load received by the rotor fluctuates in a case where the second intermediate hour wheel gear meshes with the first intermediate hour pinion, and rotating at a second reduction ratio lower than the first reduction ratio with respect to the rotor.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 22, 2021
    Inventors: Masayuki KAWATA, Katsuya MUGISHIMA, Ken SATO, Yuya TANAKA
  • Publication number: 20200264561
    Abstract: A timepiece movement includes a control unit that determines a position of an indicating hand by detecting a rotation state of a rotor, and a train wheel that transmits a drive force of a stepping motor to the indicating hand, and that has a first gear, and a second gear and a third gear which mesh with the first gear. The first gear has a reference load unit that causes fluctuations in a load applied to the rotor in each case of meshing with the second gear and the third gear. A first line segment which connects a center of the first gear and a center of the second gear to each other forms an angle smaller than 180° with a second line segment which connects the center of the first gear and a center of the third gear.
    Type: Application
    Filed: February 5, 2020
    Publication date: August 20, 2020
    Inventors: Tomohiro IHASHI, Katsuya MUGISHIMA
  • Patent number: 10132627
    Abstract: An electronic device has a storage unit that stores unit information relating to movement with respect to each of an elevating state and a horizontal movement state and an altitude measurement unit that measures a series of altitudes. An altitude change determination unit determines whether the movement is the elevating state or not using a first determination section having a first altitude range based on a first set of altitudes within the measured series of altitudes, and determines whether the movement is the horizontal movement state or not using a second determination section having a second altitude range smaller than the first altitude range and based on a second set of altitudes within the measured series of altitudes. A movement distance calculator reads from the storage unit the unit information corresponding to the state determined by the determination unit and calculates a movement distance based on the read unit information.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: November 20, 2018
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Keisuke Tsubata, Kazuo Kato, Tomohiro Ihashi, Takanori Hasegawa, Hisao Nakamura, Katsuya Mugishima, Akira Takakura
  • Patent number: 10037009
    Abstract: A power saving movement includes a center wheel and pinion driving a minute hand and minute detection wheel. A gear ratio of the center wheel/pinion with respect to the minute detection wheel is 1/M. The minute detection wheel has N minute detection portions which are disposed on the same rotation trajectory as the center wheel & pinion. N and M are integers. The minute detection wheel transmittable portions are disposed at an interval of 360°/N. A pair of the center wheel transmittable portions are disposed in parallel at an unequal angular interval of a center axle of the center wheel & pinion. An angular interval of the center wheel transmittable portions adjacent to each other in the circumferential direction of the center axle of the center wheel & pinion is set to magnification of 360°/(M×N).
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: July 31, 2018
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Katsuya Mugishima, Satoshi Sakai, Kenji Ogasawara, Tomohiro Ihashi
  • Patent number: 9971310
    Abstract: A timepiece movement includes a center wheel & pinion that drives a minute hand, a second wheel & pinion arranged coaxially with a center axle of the center wheel & pinion, a first light emitting element arranged on one side in an axial direction of the center axle with respect to the center wheel & pinion and the second wheel & pinion, and a first light receiving element arranged on the other side in the axial direction of the center axle across the second wheel & pinion, and that detects light emitted from the first light emitting element. The center wheel & pinion has a first center wheel transmittable portion through which the light emitted from the first light emitting element is transmittable, and a second center wheel transmittable portion which is disposed on a rotation trajectory of the first center wheel transmittable portion and through which the light emitted from the first light emitting element is transmittable.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: May 15, 2018
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Satoshi Sakai, Katsuya Mugishima, Tomohiro Ihashi, Kenji Ogasawara
  • Patent number: 9971304
    Abstract: A timepiece movement includes a second light emitting element, a second light receiving element, and a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable, A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion, and a second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point at which the transmitted light is transmitted through the first second wheel transmittable portion or concurrently through the second second wheel transmittable portion and the second detection wheel transmittable portion.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: May 15, 2018
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Satoshi Sakai, Katsuya Mugishima, Tomohiro Ihashi, Kenji Ogasawara
  • Publication number: 20170052510
    Abstract: There is provided a movement which can reduce power consumption when a hand position is detected. The movement includes a center wheel & pinion that drives a minute hand, a minute detection wheel in which a gear ratio of the center wheel & pinion with respect to the minute detection wheel is set to 1/M by using M as an integer, a first light emitting element, and a first light receiving element. The center wheel & pinion has a pair of center wheel transmittable portions which are disposed on the same rotation trajectory, and through which light emitted from the first light emitting element is transmittable. The minute detection wheel has the N-number of minute detection wheel transmittable portions which are disposed on the same rotation trajectory, and through which light emitted from the first light emitting element is transmittable. The minute detection wheel transmittable portions are disposed at an interval of 360°/N in a circumferential direction of the minute detection wheel.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 23, 2017
    Inventors: Katsuya MUGISHIMA, Satoshi SAKAI, Kenji OGASAWARA, Tomohiro IHASHI
  • Publication number: 20170052509
    Abstract: A movement includes a second light emitting element, a second light receiving element, a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable. A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion. A second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point that the transmitted light is transmitted through the first second wheel transmittable portion or transmitted concurrently the second second wheel transmittable portion and the second detection wheel transmittable portion.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 23, 2017
    Inventors: Satoshi SAKAI, Katsuya MUGISHIMA, Tomohiro IHASHI, Kenji OGASAWARA
  • Publication number: 20170052511
    Abstract: There is provided a movement including a center wheel & pinion that drives a minute hand, a second wheel & pinion that is arranged coaxially with a center axle of the center wheel & pinion, a first light emitting element that is arranged on one side in an axial direction of the center axle with respect to the center wheel & pinion and the second wheel & pinion, and a first light receiving element that is arranged on the other side in the axial direction of the center axle across the second wheel & pinion, and that detects light emitted from the first light emitting element. The center wheel & pinion has a first center wheel transmittable portion through which the light emitted from the first light emitting element is transmittable, and a second center wheel transmittable portion which is disposed on a rotation trajectory of the first center wheel transmittable portion and through which the light emitted from the first light emitting element is transmittable.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 23, 2017
    Inventors: Satoshi SAKAI, Katsuya MUGISHIMA, Tomohiro IHASHI, Kenji OGASAWARA
  • Publication number: 20150168142
    Abstract: An electronic device includes: a storage unit that stores unit information relating to a movement with respect to each of an elevating state and a horizontal movement state; an altitude measurement unit that measures an altitude; an altitude change determination unit that determines whether the movement is the elevating state or the horizontal movement state based on the altitude measured by the altitude measurement unit; and a movement distance calculator that reads the unit information corresponding to the state determined by the altitude change determination unit from the storage unit and calculates a movement distance based on the read unit information.
    Type: Application
    Filed: November 18, 2014
    Publication date: June 18, 2015
    Inventors: Keisuke TSUBATA, Kazuo KATO, Tomohiro IHASHI, Takanori HASEGAWA, Hisao NAKAMURA, Katsuya MUGISHIMA, Akira TAKAKURA
  • Publication number: 20150168141
    Abstract: An electronic device includes an altitude measurement unit, an altitude change determination unit, and an elevating speed calculator. The altitude measurement unit measures an altitude, the altitude change determination unit determines whether a change state of the altitude measured by the altitude measurement unit is at least an ascending state or a descending state, and the elevating speed calculator calculates an average elevating speed in each change state determined by the altitude change determination unit based on the altitude measured by the altitude measurement unit. A data processing method in the electronic device and a data processing program executed by a computer of the electronic device may be realized.
    Type: Application
    Filed: November 13, 2014
    Publication date: June 18, 2015
    Inventors: Kazuo KATO, Keisuke TSUBATA, Hisao NAKAMURA, Tomohiro IHASHI, Takanori HASEGAWA, Katsuya MUGISHIMA, Akira TAKAKURA
  • Publication number: 20150168438
    Abstract: To provide an electronic device, a data processing method and a data processing program capable of measuring a stable ascending/descending velocity on which the most recent ascending/descending state is reflected. The electronic device includes an altitude measurement unit measuring altitudes, an altitude change determination unit determining an altitude change state based on altitudes measured by the altitude measurement unit within a predetermined first time interval until a current time and an ascending/descending velocity calculation unit calculating an ascending/descending velocity based on altitudes measured by the altitude measurement unit within a second time interval until the current time, which is equal to the first time interval or longer than the first time interval.
    Type: Application
    Filed: November 13, 2014
    Publication date: June 18, 2015
    Inventors: Keisuke TSUBATA, Hisao NAKAMURA, Takanori HASEGAWA, Tomohiro IHASHI, Katsuya MUGISHIMA, Kazuo KATO, Akira TAKAKURA
  • Publication number: 20150039263
    Abstract: An electronic apparatus includes a display unit, an altitude measurement unit that measures an altitude, key input means for receiving an operation input, and a CPU that starts recording of altitude information regarding an altitude measured by the altitude measurement unit at a predetermined time interval if the key input means receives an input for instructing starting of recording of an altitude, stops the recording of the altitude information if the key input means receives an input for instructing stopping of recording of an altitude, and displays the altitude information when the recording starts on the display unit if the key input means receives an input for instructing display of the altitude information in a state in which the altitude information is currently recorded.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 5, 2015
    Inventors: Takanori HASEGAWA, Akira TAKAKURA, Keisuke TSUBATA, Kazuo KATO, Hisao NAKAMURA, Tomohiro IHASHI, Katsuya MUGISHIMA
  • Publication number: 20140191944
    Abstract: To provide a living body information detection apparatus and a living body information detection program capable of allowing a user to easily recognize information based on acquired living body information. A living body information detection apparatus includes an acquisition unit acquiring living body information obtained by detecting a living body signal and a control unit moving a display position of an image associated with the living body information on a display unit based on the magnitude of a value of the living body information obtained by the acquisition unit.
    Type: Application
    Filed: December 19, 2013
    Publication date: July 10, 2014
    Applicant: SEIKO INSTRUMENTS INC.
    Inventors: Katsuya MUGISHIMA, Akira TAKAKURA, Keisuke TSUBATA, Kazuhiro KOYAMA, Takanori HASEGAWA
  • Patent number: 8682420
    Abstract: A heartbeat measuring device has a measurement unit that measures a heart rate of a user, and an information storage unit that stores unique information regarding a heart rate unique to the user or information regarding a detected heartbeat of the user. A determination unit determines whether or not a heartbeat measurement state of the user is normal on the basis of the unique information or the information regarding a heartbeat stored in the information storage unit. An abnormality detection unit detects an abnormality corresponding to poor mounting of the heartbeat measuring device or interference due to external noise on the basis of a heart rate measured by the measurement unit. A notification unit performs a notification when the abnormality is detected by the abnormality detection unit. The notification unit changes information to be notified on the basis of a detection result by the abnormality detection unit.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: March 25, 2014
    Assignee: Seiko Instruments Inc.
    Inventors: Keisuke Tsubata, Takanori Hasegawa, Akira Takakura, Katsuya Mugishima, Kazuo Kato, Kazuhiro Koyama, Hisao Nakamura