Patents by Inventor Daiki TOKUSHIMA

Daiki TOKUSHIMA 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: 11628579
    Abstract: A robot system includes a robot, a controller that controls actuation of the robot, and a first external device, wherein the robot has a first member, a second member that pivots relative to the first member, a motor that generates drive power for pivoting the second member relative to the first member, an encoder including a detection unit that detects an amount of rotation of the motor, a control unit that controls actuation of the detection unit, a communication unit that communicates with the controller, and a first device connecting part connected to the first external device, the control unit connected to the detection unit, the communication unit, and the first device connecting part, and a first communication line connecting the communication unit and the controller, and data of the first external device is transmitted to the controller via the first device connecting part and the first communication line.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: April 18, 2023
    Inventors: Akitoshi Maeda, Daiki Tokushima, Takeru Saeki
  • Publication number: 20220331954
    Abstract: A method of generating a control program for a robot includes generating a trajectory in which a robot arm moves between a plurality of teaching points based on a first constraint condition with respect to a movement time of the robot arm and a second constraint condition with respect to a drive condition for driving the robot arm by a processor, displaying the trajectory generated by the processor and accumulated power consumption when the robot arm moves along the trajectory by a display unit, and, when receiving an instruction to employ the trajectory, generating a control program for the robot based on the trajectory by the processor.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 20, 2022
    Inventors: Takema YAMAZAKI, Daisuke SATO, Daiki TOKUSHIMA
  • Patent number: 11383389
    Abstract: A robot includes a robot control apparatus that communicates with a device, wherein a transmission terminal of a clock synchronization serial communication system of the device and a reception terminal of the robot control apparatus are connected by a signal line, and the robot control apparatus receives an asynchronous signal from the device.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: July 12, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Daiki Tokushima, Akitoshi Maeda
  • Patent number: 10926526
    Abstract: A method of manufacturing a three-dimensionally formed object in which the three-dimensionally formed object is manufactured by laminating layers to forma laminate, includes: forming a constituent layer corresponding to a constituent region of the three-dimensionally formed object; forming a support layer which is in contact with the constituent layer and supports the constituent layer by ejecting a flowable composition including a resin from an ejecting portion in the form of liquid drops; solidifying the support layer; and heating the laminate which is formed in the formation of the constituent layer, the formation of the support layer, and the solidification of the support layer.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: February 23, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Okamoto, Masaya Ishida, Daiki Tokushima, Toshimitsu Hirai
  • Publication number: 20200307000
    Abstract: A robot system includes a robot, a controller that controls actuation of the robot, and a first external device, wherein the robot has a first member, a second member that pivots relative to the first member, a motor that generates drive power for pivoting the second member relative to the first member, an encoder including a detection unit that detects an amount of rotation of the motor, a control unit that controls actuation of the detection unit, a communication unit that communicates with the controller, and a first device connecting part connected to the first external device, the control unit connected to the detection unit, the communication unit, and the first device connecting part, and a first communication line connecting the communication unit and the controller, and data of the first external device is transmitted to the controller via the first device connecting part and the first communication line.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Akitoshi MAEDA, Daiki TOKUSHIMA, Takeru SAEKI
  • Patent number: 10788814
    Abstract: An encoder includes a base portion, a scale portion that is provided to be relatively rotatable with respect to the base portion, and has a plurality of marks, an imaging element that is disposed in the base portion, and images the marks, and an estimation portion that performs template matching on a captured image in the imaging element by using a reference image, in which the plurality of marks include a first mark and a second mark, and the estimation portion counts the number of pixels of the imaging element corresponding to a rotation angle of the scale portion with respect to the base portion until a position of the second mark is detected from detection of a position of the first mark, and performs calibration on the basis of the counted number of pixels and the rotation angle.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 29, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Daiki Tokushima, Takayuki Kondo
  • Patent number: 10759055
    Abstract: An encoder includes a base portion, a scale portion that is provided to be relatively movable or rotatable with respect to the base portion, and has three or more marks which are different from each other, an imaging element that is disposed in the base portion, and images the marks, and an estimation portion that selects at least one reference image from among three or more reference images, performs template matching on a captured image in the imaging element by using the reference image, so as to detect positions of the marks, and estimates a movement state or a rotation state of the scale portion with respect to the base portion, in which the estimation portion predicts a reference image to be used for post-template matching on the basis of a result of pre-template matching, and performs the post-template matching by using the predicted reference image.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 1, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Takayuki Kondo, Daiki Tokushima
  • Publication number: 20200238535
    Abstract: A robot includes a robot control apparatus that communicates with a device, wherein a transmission terminal of a clock synchronization serial communication system of the device and a reception terminal of the robot control apparatus are connected by a signal line, and the robot control apparatus receives an asynchronous signal from the device.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 30, 2020
    Inventors: Daiki TOKUSHIMA, Akitoshi MAEDA
  • Patent number: 10399233
    Abstract: A robot includes: a base; a robot arm rotatably provided around a rotation axis relative to the base; a mark which rotates in accordance with rotation of the robot arm; a capturing element which captures the mark; a memory which stores a reference image therein; and a determination section which determines a rotation state of the robot arm by template matching by subpixel estimation using the reference image and an image captured by the capturing element, in which a relationship of 2R/B?L/X?100R/B is satisfied when a viewing field size per one pixel of the capturing element is B, a distance between the rotation axis and the center of the mark is R, the maximum distance between the rotation axis and a tip of the robot arm is L, and repetition positioning accuracy of the tip of the robot arm is X.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: September 3, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Daiki Tokushima
  • Publication number: 20190121323
    Abstract: An encoder includes a base portion, a scale portion that is provided to be relatively rotatable with respect to the base portion, and has a plurality of marks, an imaging element that is disposed in the base portion, and images the marks, and an estimation portion that performs template matching on a captured image in the imaging element by using a reference image, in which the plurality of marks include a first mark and a second mark, and the estimation portion counts the number of pixels of the imaging element corresponding to a rotation angle of the scale portion with respect to the base portion until a position of the second mark is detected from detection of a position of the first mark, and performs calibration on the basis of the counted number of pixels and the rotation angle.
    Type: Application
    Filed: October 23, 2018
    Publication date: April 25, 2019
    Inventors: Daiki TOKUSHIMA, Takayuki KONDO
  • Patent number: 10252414
    Abstract: A robot includes a base, a robot arm provided to be turnable around a turning axis with respect to the base, and an encoder including a mark configured to turn around the turning axis according to the turning of the robot arm and an imaging element configured to image the mark, the encoder detecting a state of the turning of the robot arm using a signal output from the imaging element. The encoder includes a telecentric optical system disposed between the imaging element and the mark.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: April 9, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Takayuki Kondo, Daiki Tokushima, Hidemitsu Sorimachi
  • Patent number: 10252425
    Abstract: A robot includes a first member, a second member that is provided to be turnable about a turning axis with respect to the first member, marks that are disposed around the turning axis on a surface of the second member, and a mark detection portion that is disposed in the first member and detects the marks.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: April 9, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Takayuki Kondo, Daiki Tokushima
  • Publication number: 20190099889
    Abstract: An encoder includes a base portion, a scale portion that is provided to be relatively movable or rotatable with respect to the base portion, and has three or more marks which are different from each other, an imaging element that is disposed in the base portion, and images the marks, and an estimation portion that selects at least one reference image from among three or more reference images, performs template matching on a captured image in the imaging element by using the reference image, so as to detect positions of the marks, and estimates a movement state or a rotation state of the scale portion with respect to the base portion, in which the estimation portion predicts a reference image to be used for post-template matching on the basis of a result of pre-template matching, and performs the post-template matching by using the predicted reference image.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Inventors: Takayuki KONDO, Daiki TOKUSHIMA
  • Publication number: 20190057288
    Abstract: An encoder includes a base part, a rotation part provided rotatably about a rotation axis relative to the base part, an irregular pattern placed along about the rotation axis in the rotation part, an image pickup device placed in the base part and capturing the pattern, and a determination part that determines a rotation state of the rotation part relative to the base part using an imaging result of the image pickup device.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 21, 2019
    Inventors: Daiki TOKUSHIMA, Takayuki KONDO
  • Patent number: 10139251
    Abstract: A power transmitting apparatus includes a power transmitting section that includes an input shaft section and an output shaft section and transmits drive force from the input shaft section to the output shaft section, a first detection section including a polarizing section that rotates when one of the input shaft section and the output shaft section rotates and has a polarization characteristic, a light source section that irradiates the polarizing section with light, and a light detection section that outputs a signal according to the intensity of the light from the polarizing section, a second detection section that outputs a signal according to the rotational state of the other one of the input shaft section and the output shaft section, and a determination section that determines the rotational state of the polarizing section based on the signal from the light detection section and the signal from the second detection section.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: November 27, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Daiki Tokushima
  • Publication number: 20180311813
    Abstract: A robot includes a base, a robot arm provided to be turnable around a turning axis with respect to the base, and an encoder including a mark configured to turn around the turning axis according to the turning of the robot arm and an imaging element configured to image the mark, the encoder detecting a state of the turning of the robot arm using a signal output from the imaging element. The encoder includes a telecentric optical system disposed between the imaging element and the mark.
    Type: Application
    Filed: April 18, 2018
    Publication date: November 1, 2018
    Inventors: Takayuki KONDO, Daiki TOKUSHIMA, Hidemitsu SORIMACHI
  • Publication number: 20180207805
    Abstract: A robot includes: a base; a robot arm rotatably provided around a rotation axis relative to the base; a mark which rotates in accordance with rotation of the robot arm; a capturing element which captures the mark; a memory which stores a reference image therein; and a determination section which determines a rotation state of the robot arm by template matching by subpixel estimation using the reference image and an image captured by the capturing element, in which a relationship of 2R/B?L/X?100R/B is satisfied when a viewing field size per one pixel of the capturing element is B, a distance between the rotation axis and the center of the mark is R, the maximum distance between the rotation axis and a tip of the robot arm is L, and repetition positioning accuracy of the tip of the robot arm is X.
    Type: Application
    Filed: January 17, 2018
    Publication date: July 26, 2018
    Inventor: Daiki TOKUSHIMA
  • Publication number: 20180031394
    Abstract: A power transmitting apparatus includes a power transmitting section that includes an input shaft section and an output shaft section and transmits drive force from the input shaft section to the output shaft section, a first detection section including a polarizing section that rotates when one of the input shaft section and the output shaft section rotates and has a polarization characteristic, a light source section that irradiates the polarizing section with light, and a light detection section that outputs a signal according to the intensity of the light from the polarizing section, a second detection section that outputs a signal according to the rotational state of the other one of the input shaft section and the output shaft section, and a determination section that determines the rotational state of the polarizing section based on the signal from the light detection section and the signal from the second detection section.
    Type: Application
    Filed: July 20, 2017
    Publication date: February 1, 2018
    Inventor: Daiki TOKUSHIMA
  • Publication number: 20170274537
    Abstract: A robot includes a first member, a second member that is provided to be turnable about a turning axis with respect to the first member, marks that are disposed around the turning axis on a surface of the second member, and a mark detection portion that is disposed in the first member and detects the marks.
    Type: Application
    Filed: March 27, 2017
    Publication date: September 28, 2017
    Inventors: Takayuki KONDO, Daiki TOKUSHIMA
  • Patent number: 9725271
    Abstract: A method includes, a first step of starting rotation of a rotating axle, which is configured to detachably support a web, in a direction in which the web is wounded onto the rotating axle, a second step of detecting a tension applied to the web after the first step, a third step of performing open loop control on torque applied to the rotating axle until the tension greater than a designated value is detected with the second step, and a fourth step of performing feedback control on the torque applied to the rotating axle based on the detection value of the tension applied to the web after the tension greater than the designated value is detected with the second step.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: August 8, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Masashi Oba, Daiki Tokushima