Patents by Inventor Je-Ha Ryu

Je-Ha Ryu 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: 10303286
    Abstract: A haptic driving apparatus provides a user with electrovibration of certain strength regardless of a variance of a surrounding environment, and an electronic device has a haptic function. The haptic driving apparatus comprises a haptic electrode driver generating a haptic driving signal to supply the generated haptic driving signal to a haptic electrode through a current monitor and varying the haptic driving signal in accordance with voltages at both ends of the current monitor.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 28, 2019
    Assignees: LG Display Co., Ltd., Gwangju Institute of Science and Technology
    Inventors: JiEun Son, KiDuk Kim, JongHee Hwang, Je Ha Ryu, Hee Won Kim, Jeong Goo Kang
  • Publication number: 20160320901
    Abstract: A haptic driving apparatus that may provide a user with electrovibration of certain strength regardless of a variance of a surrounding environment and an electronic device having a haptic function are disclosed. The haptic driving apparatus comprises a haptic electrode driver generating a haptic driving signal to supply the generated haptic driving signal to a haptic electrode through a current monitor and varying the haptic driving signal in accordance with the current supplied to the haptic electrode.
    Type: Application
    Filed: April 26, 2016
    Publication date: November 3, 2016
    Inventors: JiEun SON, KiDuk KIM, JongHee HWANG, Je Ha RYU, Hee Won KIM, Jeong Goo KANG
  • Patent number: 9335821
    Abstract: The present disclosure provides a method and device for controlling a haptic interface, which can maintain stability and enhance transparency by restricting force caused by unnecessary energy generated in the sample and hold processes while controlling the haptic interface. The method includes detecting a physical parameter based on driving of the haptic interface; calculating a reaction to be sent from a virtual environment to the haptic interface according to the physical parameter; calculating a bounding parameter satisfying a condition that a haptic system is passive, using the physical parameter and the reaction; adjusting the bounding parameter to be within a preset range; calculating force to be output to the haptic interface according to the adjusted bounding parameter; and applying the calculated force to the haptic interface.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 10, 2016
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Je Ha Ryu, Jong Phil Kim, Sang Yun Baek
  • Publication number: 20160004313
    Abstract: A haptic system includes: at least one bio-signal measuring unit configured to measure a bio-signal from a user in response to visual information; at least one haptic information providing unit equipped on the user and configured to provide haptic information; and a controller configured to operate the haptic information providing unit when there is a change in the bio-signal. The haptic device does not require calibration, so that a user can use the haptic system conveniently in any environment. In addition, the user's location and action can be determined accurately.
    Type: Application
    Filed: July 3, 2015
    Publication date: January 7, 2016
    Inventors: Je-Ha RYU, Chang-Gyu LEE, Dae-Hyeon JEONG
  • Patent number: 9102056
    Abstract: The present invention relates to a control method and device for position-based impedance controlled industrial robot, and more particularly, a control method and device for position-based impedance controlled industrial robot able to improve contact stabilization with regard to an environment with a variety of stiffness. According to a control method and device for position-based impedance controlled industrial robot in accordance with the present invention, a robust contact stabilization for a position-based impedance controlled industrial robot contacting and interacting with an uncertain actual environment may be guaranteed.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: August 11, 2015
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Je Ha Ryu, Sehun Kim
  • Patent number: 9030305
    Abstract: Provided is a method for expressing haptic information using control information, and a system for transmitting haptic information. In the method for expressing haptic information using control information, a tactile video is generated from tactile information for driving a drive array of a tactile device; force feedback data are generated from force feedback information for driving an actuator of a force feedback device; object data are generated to produce a scene descriptor that defines time positions of the tactile video, force feedback data, and multimedia information; and a stream file is generated by encoding the object data and multiplexing the encoded object data. The method comprises: a step of storing control information containing features and specifications of a haptic device including the tactile device and the force feedback device; and a step of expressing information of the scene descriptor through the haptic device with reference to the control information.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 12, 2015
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Je-Ha Ryu, Yeong-Mi Kim
  • Publication number: 20140379131
    Abstract: The present invention relates to a control method and device for position-based impedance controlled industrial robot, and more particularly, a control method and device for position-based impedance controlled industrial robot able to improve contact stabilization with regard to an environment with a variety of stiffness. According to a control method and device for position-based impedance controlled industrial robot in accordance with the present invention, a robust contact stabilization for a position-based impedance controlled industrial robot contacting and interacting with an uncertain actual environment may be guaranteed.
    Type: Application
    Filed: December 30, 2013
    Publication date: December 25, 2014
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Je Ha RYU, Sehun KIM
  • Publication number: 20130088440
    Abstract: The present disclosure provides a method and device for controlling a haptic interface, which can maintain stability and enhance transparency by restricting force caused by unnecessary energy generated in the sample and hold processes while controlling the haptic interface. The method includes detecting a physical parameter based on driving of the haptic interface; calculating a reaction to be sent from a virtual environment to the haptic interface according to the physical parameter; calculating a bounding parameter satisfying a condition that a haptic system is passive, using the physical parameter and the reaction; adjusting the bounding parameter to be within a preset range; calculating force to be output to the haptic interface according to the adjusted bounding parameter; and applying the calculated force to the haptic interface.
    Type: Application
    Filed: May 18, 2012
    Publication date: April 11, 2013
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Je Ha RYU, Jong Phil KIM, Sang Yun BAEK
  • Patent number: 8300710
    Abstract: The present invention relates to a node structure for representing tactile information, and method and system for transmitting tactile information using the same. More particularly, the present invention relates to a node structure that represents tactile information for driving a tactile display device including an array of drivers as a tactile video, and to method and system for transmitting tactile information using the same. The invention provides a node structure for representing information for driving a driver array of a tactile display device. The node structure includes: a url field that indicates the position of the tactile video storing information on the driving strength of the driver array as intensity values of pixels! a start time field that indicates the playback start time of the tactile video; and a stop time field that indicates the playback stop time of the tactile video. In addition, the invention provides method and system for transmitting tactile information using the node structure.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: October 30, 2012
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Je-Ha Ryu, Yeong-Mi Kim, Jong-Eun Cha, Yong-Won Seo
  • Publication number: 20120223907
    Abstract: Disclosed are a method and an apparatus for providing the touch information of a 3-D object. The method includes creating a hexahedral bounding box around the 3-D object, acquiring a depth information image for each side of the hexahedral bounding box, creating six touch attribute images corresponding to six depth information images, and providing a touch attribute of at least one of the six touch attribute images to a user.
    Type: Application
    Filed: November 9, 2010
    Publication date: September 6, 2012
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Je-Ha Ryu, Hyun-Gon Kim
  • Publication number: 20120092146
    Abstract: Provided is a method for expressing haptic information using control information, and a system for transmitting haptic information. In the method for expressing haptic information using control information, a tactile video is generated from tactile information for driving a drive array of a tactile device; force feedback data are generated from force feedback information for driving an actuator of a force feedback device; object data are generated to produce a scene descriptor that defines time positions of the tactile video, force feedback data, and multimedia information; and a stream file is generated by encoding the object data and multiplexing the encoded object data. The method comprises: a step of storing control information containing features and specifications of a haptic device including the tactile device and the force feedback device; and a step of expressing information of the scene descriptor through the haptic device with reference to the control information.
    Type: Application
    Filed: December 3, 2010
    Publication date: April 19, 2012
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Je-Ha Ryu, Yeong-Mi Kim
  • Publication number: 20100278512
    Abstract: The present invention relates to a node structure for representing tactile information, and method and system for transmitting tactile information using the same. More particularly, the present invention relates to a node structure that represents tactile information for driving a tactile display device including an array of drivers as a tactile video, and to method and system for transmitting tactile information using the same. The invention provides a node structure for representing information for driving a driver array of a tactile display device. The node structure includes: a url field that indicates the position of the tactile video storing information on the driving strength of the driver array as intensity values of pixels! a start time field that indicates the playback start time of the tactile video; and a stop time field that indicates the playback stop time of the tactile video. In addition, the invention provides method and system for transmitting tactile information using the node structure.
    Type: Application
    Filed: March 3, 2008
    Publication date: November 4, 2010
    Applicant: Gwangju Institute of Science and Technology
    Inventors: Je-Ha Ryu, Yeong-Mi Kim, Jong-Eun Cha, Yong-Won Seo
  • Publication number: 20090309827
    Abstract: The present invention relates to a method and apparatus for authoring tactile information that generates a tactile video for representing tactile information in the form of an intensity value of a pixel in order to author tactile information. More particularly, the present invention relates to a method and apparatus for authoring tactile information that represents an intensity value of a pixel of a tactile video in a drawing manner on a tactile video input window while outputting and referring to audiovisual media. The present invention provides an apparatus for authoring a tactile video that represents information about driving strength of an actuator array of a tactile display apparatus in the form of an intensity value of a pixel. The apparatus includes a tactile video generating unit that including a configuration module and a tactile video authoring module. The configuration module performs configuration to author a tactile video.
    Type: Application
    Filed: February 29, 2008
    Publication date: December 17, 2009
    Applicant: Gwangiu Institute of Science and Technology
    Inventors: Je-Ha Ryu, Yeong-Mi Kim, Jong-Eun Cha, Yong-Won Seo
  • Patent number: 7420539
    Abstract: A method of stabilizing a haptic interface and a haptic system using the same, are provided.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: September 2, 2008
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Je-Ha Ryu, Jong-Phil Kim
  • Publication number: 20050231480
    Abstract: A method of stabilizing a haptic interface and a haptic system using the same, are provided.
    Type: Application
    Filed: October 20, 2004
    Publication date: October 20, 2005
    Applicant: Gwangju Institute of Science and Technology
    Inventors: Jong-Phil Kim, Je-Ha Ryu