Patents by Inventor Tamio Ikehashi

Tamio Ikehashi 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: 11092440
    Abstract: According to one embodiment, a method for controlling a vibration device includes a movable body capable of vibrating in a first direction, and a catch and release mechanism capable of catching the movable body that freely vibrates in the first direction, by an electrostatic attractive force, and releasing the caught movable body to freely vibrate the movable body in the first direction, wherein in a condition that tc is a time from a rise start time point to a rise end time point of an applied voltage for catching the movable body that freely vibrates in the first direction, by the electrostatic attractive force, and td is a period of the free vibration in the first direction of the movable body, the time tc is longer than the time td.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: August 17, 2021
    Assignee: KABUSHIKIKAISHA TOSHIBA
    Inventors: Ryunosuke Gando, Tamio Ikehashi, Etsuji Ogawa, Tetsuro Itakura, Yohei Hatakeyama, Yasushi Tomizawa
  • Patent number: 10892732
    Abstract: According to one embodiment, a resonator is disclosed. The resonator includes a vibrator and an attenuation mechanism. The attenuation mechanism selectively attenuates vibration of a spurious mode that is mechanically coupled to a first mode when the vibrator vibrates in the first mode.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: January 12, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tamio Ikehashi
  • Publication number: 20200363205
    Abstract: According to one embodiment, a sensor includes a movable member, first, and second counter electrodes, first, and second resistances, and a control device. The movable member includes first and second electrodes and is capable of vibrating. The vibration of the movable member includes first and second components. The first component is along a first direction. The second component is along a second direction crossing the first direction. The first counter electrode opposes the first electrode. The second counter electrode opposes the second electrode. The first resistance includes first and first other end portions. The second resistance includes a second end portion and a second other end portion. The first other end portion is electrically connected to the first counter electrode. The second other end portion is electrically connected to the second counter electrode. The control device includes a controller configured to perform at least a first operation.
    Type: Application
    Filed: March 11, 2020
    Publication date: November 19, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryunosuke GANDO, Tamio IKEHASHI, Yasushi TOMIZAWA, Shiori KAJI
  • Patent number: 10794886
    Abstract: A gas detection device includes a substrate having a main surface and a movable film structure located on, and including a portion thereof spaced from, the main surface of the substrate. The portion of the movable film structure located over and spaced from the substrate includes a first film formed of an insulating material, a patterned second film which deforms as a result of absorbing or adsorbing a predetermined gas, and a patterned third film comprising a resistive heater, at least a portion of the movable film structure spaced from the substrate being movable with respect to the substrate. From the perspective of a direction perpendicular to the main surface of the substrate, at least a portion of a pattern of the second film overlaps at least a portion of a pattern of the third film.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 6, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Publication number: 20200284582
    Abstract: According to one embodiment, a sensor includes a movable member including a first movable portion and a second movable portion, and a first fixed member. At least a portion of the first fixed member is between the first movable portion and the second movable portion. The first fixed member includes a first fixed counter portion opposing the first movable portion, and a second fixed counter portion opposing the second movable portion. The first fixed counter portion includes a first fixed protruding portion protruding toward the first movable portion. The second fixed counter portion includes a second fixed protruding portion protruding toward the second movable portion.
    Type: Application
    Filed: September 10, 2019
    Publication date: September 10, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shiori KAJI, Ryunosuke GANDO, Yasushi TOMIZAWA, Kei MASUNISHI, Tamio IKEHASHI
  • Patent number: 10767992
    Abstract: According to one embodiment, a gyro sensor system including a gyro sensor unit is disclosed. The unit includes a movable body, a spring mechanism, a detector, an adjuster, and a rotation angle acquisition unit. The spring mechanism vibrates the movable body. A detector detects an amplitude of vibration of the movable body due to Coriolis force. The adjuster adjusts a first resonance frequency of vibration of the movable body in free vibration and a second resonance frequency of vibration of the movable body due to Coriolis force on the movable body so that the first and second resonance frequencies are to coincide with each other based on the amplitude of the vibration due to Coriolis force. The rotation angle acquisition unit acquires a rotation angle of the movable body, based on the amplitude of the vibration due to Coriolis force.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 8, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Tamio Ikehashi
  • Patent number: 10763815
    Abstract: According to one embodiment, an IC chip includes a plurality of fuse elements including a plurality of fuse portions each of which is to be cut off by a stress, and a plurality of actuator portions provided for the plurality of fuse portions, respectively, and each of which applies a stress to corresponding one of fuse portions, and a control circuit supplying a control signal for cutting off desired one of the fuse portions to corresponding one of the actuator portions.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: September 1, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Patent number: 10760910
    Abstract: According to one embodiment, a sensor device includes a movable body capable of vibrating, and a catch-and-release mechanism capable of catching the vibrating movable body and capable of releasing the caught movable body. The catch-and-release mechanism includes a stopper portion capable of stopping vibration of the movable body when the movable body contacts the stopper portion, and an elastic member configured to reduce a force acting between the movable body and the stopper portion.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: September 1, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryunosuke Gando, Tamio Ikehashi, Yasushi Tomizawa, Etsuji Ogawa, Shunta Maeda
  • Patent number: 10598647
    Abstract: According to one embodiment, a gas sensor is disclosed. The gas sensor includes a substrate region, a first electrode provided on the substrate region, and a movable structure above the first electrode. The movable structure includes a deformable member which deforms by absorbing or adsorbing a predetermined gas, a heat member which heats the deformable member, and a second electrode. The gas sensor further includes a first cavity region which is provided between the first electrode and the second electrode.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: March 24, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Publication number: 20200076394
    Abstract: According to one embodiment, an IC chip includes a plurality of fuse elements including a plurality of fuse portions each of which is to be cut off by a stress, and a plurality of actuator portions provided for the plurality of fuse portions, respectively, and each of which applies a stress to corresponding one of fuse portions, and a control circuit supplying a control signal for cutting off desired one of the fuse portions to corresponding one of the actuator portions.
    Type: Application
    Filed: March 13, 2019
    Publication date: March 5, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Publication number: 20200067479
    Abstract: According to one embodiment, a resonator is disclosed. The resonator includes a vibrator and an attenuation mechanism. The attenuation mechanism selectively attenuates vibration of a spurious mode that is mechanically coupled to a first mode when the vibrator vibrates in the first mode.
    Type: Application
    Filed: March 13, 2019
    Publication date: February 27, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Tamio IKEHASHI
  • Patent number: 10541671
    Abstract: According to one embodiment, a vibration device includes a first movable unit including first and second movable portions arranged in a direction parallel to a first axis and enabled to vibrate in the direction parallel to the first axis, a second movable unit enabled to vibrate in a direction parallel to a second axis perpendicular to the first axis, and a connection unit configured to connect the first and second movable units together, wherein the following relationship is satisfied fi>(1+1/(2Qa))fa where a resonant frequency of the first movable unit in an in-phase mode is denoted by fi, a resonant frequency of the first movable unit in an anti-phase mode is denoted by fa, and a Q factor of resonance of the first movable unit in the anti-phase mode is denoted by Qa.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: January 21, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tamio Ikehashi, Shunta Maeda, Ryunosuke Gando, Yasushi Tomizawa
  • Patent number: 10401172
    Abstract: An angular velocity acquisition device includes a movable body, a drive electrode to which a drive voltage is applied to vibrate the movable body in a first direction, at least one stopper that stops the movable body at a predetermined position, a hold electrode which receives a hold voltage to hold the movable body at the predetermined position, a detection unit that detects a predetermined physical quantity depending on an amplitude of the vibration of the movable body in a second direction based on a Coriolis force acting on the movable body that vibrates in the first direction, and an angular velocity calculation unit that calculates an angular velocity of the movable body based on the predetermined physical quantity detected by the detection unit.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: September 3, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Haruka Yamamoto, Yasushi Tomizawa, Tamio Ikehashi
  • Publication number: 20190219552
    Abstract: A gas detection device includes a substrate having a main surface and a movable film structure located on, and including a portion thereof spaced from, the main surface of the substrate. The portion of the movable film structure located over and spaced from the substrate includes a first film formed of an insulating material, a patterned second film which deforms as a result of absorbing or adsorbing a predetermined gas, and a patterned third film comprising a resistive heater, at least a portion of the movable film structure spaced from the substrate being movable with respect to the substrate. From the perspective of a direction perpendicular to the main surface of the substrate, at least a portion of a pattern of the second film overlaps at least a portion of a pattern of the third film.
    Type: Application
    Filed: March 27, 2019
    Publication date: July 18, 2019
    Inventors: Tamio IKEHASHI, Hiroaki Yamazaki
  • Publication number: 20190204081
    Abstract: According to one embodiment, a method for controlling a vibration device includes a movable body capable of vibrating in a first direction, and a catch and release mechanism capable of catching the movable body that freely vibrates in the first direction, by an electrostatic attractive force, and releasing the caught movable body to freely vibrate the movable body in the first direction, wherein in a condition that tc is a time from a rise start time point to a rise end time point of an applied voltage for catching the movable body that freely vibrates in the first direction, by the electrostatic attractive force, and td is a period of the free vibration in the first direction of the movable body, the time tc is longer than the time td.
    Type: Application
    Filed: August 27, 2018
    Publication date: July 4, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Ryunosuke Gando, Tamio Ikehashi, Etsuji Ogawa, Tetsuro Itakura, Yohei Hatakeyama, Yasushi Tomizawa
  • Patent number: 10330472
    Abstract: According to one embodiment, an angular velocity acquisition device includes a movable body that vibrates in a first direction and in a second direction that is based on Coriolis force and includes a movable electrode portion extending in the second direction, a hold electrode that extends in the second direction and includes a fixed electrode portion opposite to the movable electrode portion across a gap, and a stopper that is provided between the fixed electrode portion and the movable electrode portion and includes an end portion closer to the movable electrode portion than a surface of the fixed electrode portion facing the movable electrode portion.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: June 25, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasushi Tomizawa, Haruka Yamamoto, Tamio Ikehashi
  • Patent number: 10281444
    Abstract: A gas detection device includes a substrate having a main surface and a movable film structure located on, and including a portion thereof spaced from, the main surface of the substrate. The portion of the movable film structure located over and spaced from the substrate includes a first film formed of an insulating material, a patterned second film which deforms as a result of absorbing or adsorbing a predetermined gas, and a patterned third film comprising a resistive heater, at least a portion of the movable film structure spaced from the substrate being movable with respect to the substrate. From the perspective of a direction perpendicular to the main surface of the substrate, at least a portion of a pattern of the second film overlaps at least a portion of a pattern of the third film.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: May 7, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Publication number: 20190086377
    Abstract: According to one embodiment, a gas sensor is disclosed. The gas sensor includes a substrate region, a first electrode provided on the substrate region, and a movable structure above the first electrode. The movable structure includes a deformable member which deforms by absorbing or adsorbing a predetermined gas, a heat member which heats the deformable member, and a second electrode. The gas sensor further includes a first cavity region which is provided between the first electrode and the second electrode.
    Type: Application
    Filed: March 7, 2018
    Publication date: March 21, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Publication number: 20190078886
    Abstract: According to one embodiment, a sensor device includes a movable body capable of vibrating, and a catch-and-release mechanism capable of catching the vibrating movable body and capable of releasing the caught movable body. The catch-and-release mechanism includes a stopper portion capable of stopping vibration of the movable body when the movable body contacts the stopper portion, and an elastic member configured to reduce a force acting between the movable body and the stopper portion.
    Type: Application
    Filed: February 28, 2018
    Publication date: March 14, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryunosuke GANDO, Tamio IKEHASHI, Yasushi TOMIZAWA, Etsuji OGAWA, Shunta MAEDA
  • Patent number: 10107626
    Abstract: According to one embodiment, a method of acquiring rotational information of a gyro sensor includes sensing a predetermined physical quantity which depends upon an amplitude of a vibration in a second direction, the vibration in the second direction being based on Coriolis force that is applied to a movable body which is vibrating in a first direction, calculating rotational information of the movable body based on the sensed predetermined physical quantity, and stopping a vibration in the first direction of the movable body after the predetermined physical quantity is sensed.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: October 23, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Tamio Ikehashi