Patents by Inventor Wook Bahn

Wook Bahn 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: 11645778
    Abstract: According to various embodiments of the present invention, an electronic device comprises: a memory including instructions and a training database, which includes data, on at least one object, acquired on the basis of an artificial intelligence algorithm; at least one sensor; and a processor connected to the at least one sensor and the memory, wherein the processor can be configured to execute the instructions in order to acquire data on a designated area including the at least one object by using the at least one sensor, identify location information and positioning information on the at least one object on the basis of the training database, and transmit a control signal for picking the at least one object to a picking tool related to the electronic device on the basis of the identified location information and positioning information.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: May 9, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Hong Min, Soon Yong Park, Ji Min Kim, Kyung Shik Roh, Wook Bahn
  • Patent number: 11173609
    Abstract: A hand-eye calibration system and method are provided. The system includes a robot on which a small pattern is mounted, a camera configured to photograph the robot, a memory, and a processor configured to move the robot, acquire posture information of the moved robot, acquire an image from the camera, move the camera after performing the robot movement, the posture information acquisition, and the image acquisition a first predetermined number of times, and perform hand-eye calibration for the robot based on the posture information and the images, which are obtained by repeatedly performing of the robot movement, the posture information acquisition, the image acquisition, and the camera movement.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 16, 2021
    Inventors: Sohee Lee, Sukjune Yoon, Yuso Kang, Kyungshik Roh, Wook Bahn, Minyong Choi
  • Publication number: 20200388024
    Abstract: According to various embodiments of the present invention, an electronic device comprises: a memory including instructions and a training database, which includes data, on at least one object, acquired on the basis of an artificial intelligence algorithm; at least one sensor; and a processor connected to the at least one sensor and the memory, wherein the processor can be configured to execute the instructions in order to acquire data on a designated area including the at least one object by using the at least one sensor, identify location information and positioning information on the at least one object on the basis of the training database, and transmit a control signal for picking the at least one object to a picking tool related to the electronic device on the basis of the identified location information and positioning information.
    Type: Application
    Filed: November 6, 2018
    Publication date: December 10, 2020
    Inventors: Jun Hong MIN, Soon Yong PARK, Ji Min KIM, Kyung Shik ROH, Wook BAHN
  • Publication number: 20200230818
    Abstract: A hand-eye calibration system and method are provided. The system includes a robot on which a small pattern is mounted, a camera configured to photograph the robot, a memory, and a processor configured to move the robot, acquire posture information of the moved robot, acquire an image from the camera, move the camera after performing the robot movement, the posture information acquisition, and the image acquisition a first predetermined number of times, and perform hand-eye calibration for the robot based on the posture information and the images, which are obtained by repeatedly performing of the robot movement, the posture information acquisition, the image acquisition, and the camera movement.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 23, 2020
    Inventors: Sohee LEE, Sukjune YOON, Yuso KANG, Kyungshik ROH, Wook BAHN, Minyong CHOI
  • Patent number: 9541908
    Abstract: The present invention relates to a servo motor controller for controlling a servo motor having a current limiting unit, and a tuningless nonlinear control method thereof. According to the present invention, the servo motor controller control method for controlling a servo motor including a current limiting unit comprises the steps of: detecting that the limited current is output according to a current command of the current limiting unit; adjusting a disturbance estimation gain of the servo motor controller in response to the output of the limited current; and generating a control input provided from the servo motor controller to the current limiting unit on the basis of the adjusted disturbance estimation gain.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: January 10, 2017
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, RS AUTOMATION CO., LTD.
    Inventors: Dong Il Cho, Wook Bahn, Sang Hoon Lee
  • Patent number: 9372100
    Abstract: This disclosure relates to a method for detecting an absolute rotation angle of an optical rotary encoder, and more particularly, to an optical encoder having a signal track for generating a digital pulse which may correct an error when a high-level bit is generated in a Vernier type. The optical encoder according to an embodiment of the present disclosure includes a master track for generating a sinusoidal signal with the fastest cycle, a Vernier track for generating a sinusoidal signal with a cycle smaller than that of the master track by a predetermined value, and a digital track for generating a digital pulse signal with a cycle proportional to the cycle of the sinusoidal signal of the master track.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: June 21, 2016
    Assignees: SNU R&D Foundation, RS Automation Co., Ltd.
    Inventors: Dong Il Cho, Wook Bahn, Tae Il Kim, Sang Hoon Lee
  • Publication number: 20160077500
    Abstract: The present invention relates to a servo motor controller for controlling a servo motor having a current limiting unit, and a tuningless nonlinear control method thereof. According to the present invention, the servo motor controller control method for controlling a servo motor including a current limiting unit comprises the steps of: detecting that the limited current is output according to a current command of the current limiting unit; adjusting a disturbance estimation gain of the servo motor controller in response to the output of the limited current; and generating a control input provided from the servo motor controller to the current limiting unit on the basis of the adjusted disturbance estimation gain.
    Type: Application
    Filed: April 22, 2014
    Publication date: March 17, 2016
    Inventors: Dong Il CHO, Wook BAHN, Sang Hoon LEE
  • Publication number: 20150171999
    Abstract: This disclosure relates to a method for detecting an absolute rotation angle of an optical rotary encoder, and more particularly, to an optical encoder having a signal track for generating a digital pulse which may correct an error when a high-level bit is generated in a Vernier type. The optical encoder according to an embodiment of the present disclosure includes a master track for generating a sinusoidal signal with the fastest cycle, a Vernier track for generating a sinusoidal signal with a cycle smaller than that of the master track by a predetermined value, and a digital track for generating a digital pulse signal with a cycle proportional to the cycle of the sinusoidal signal of the master track.
    Type: Application
    Filed: April 25, 2013
    Publication date: June 18, 2015
    Applicant: RS AUTOMATION CO., LTD.
    Inventors: Dong Il Cho, Wook Bahn, Tae Il Kim, Sang Hoon Lee