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).
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Patent number: 10303286Abstract: 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: GrantFiled: April 26, 2016Date of Patent: May 28, 2019Assignees: LG Display Co., Ltd., Gwangju Institute of Science and TechnologyInventors: JiEun Son, KiDuk Kim, JongHee Hwang, Je Ha Ryu, Hee Won Kim, Jeong Goo Kang
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Publication number: 20160320901Abstract: 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: ApplicationFiled: April 26, 2016Publication date: November 3, 2016Inventors: JiEun SON, KiDuk KIM, JongHee HWANG, Je Ha RYU, Hee Won KIM, Jeong Goo KANG
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Patent number: 9335821Abstract: 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: GrantFiled: May 18, 2012Date of Patent: May 10, 2016Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Je Ha Ryu, Jong Phil Kim, Sang Yun Baek
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Publication number: 20160004313Abstract: 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: ApplicationFiled: July 3, 2015Publication date: January 7, 2016Inventors: Je-Ha RYU, Chang-Gyu LEE, Dae-Hyeon JEONG
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Patent number: 9102056Abstract: 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: GrantFiled: December 30, 2013Date of Patent: August 11, 2015Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Je Ha Ryu, Sehun Kim
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Patent number: 9030305Abstract: 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: GrantFiled: December 3, 2010Date of Patent: May 12, 2015Assignee: Gwangju Institute of Science and TechnologyInventors: Je-Ha Ryu, Yeong-Mi Kim
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Publication number: 20140379131Abstract: 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: ApplicationFiled: December 30, 2013Publication date: December 25, 2014Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Je Ha RYU, Sehun KIM
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Publication number: 20130088440Abstract: 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: ApplicationFiled: May 18, 2012Publication date: April 11, 2013Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Je Ha RYU, Jong Phil KIM, Sang Yun BAEK
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Patent number: 8300710Abstract: 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: GrantFiled: March 3, 2008Date of Patent: October 30, 2012Assignee: Gwangju Institute of Science and TechnologyInventors: Je-Ha Ryu, Yeong-Mi Kim, Jong-Eun Cha, Yong-Won Seo
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Publication number: 20120223907Abstract: 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: ApplicationFiled: November 9, 2010Publication date: September 6, 2012Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Je-Ha Ryu, Hyun-Gon Kim
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Publication number: 20120092146Abstract: 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: ApplicationFiled: December 3, 2010Publication date: April 19, 2012Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Je-Ha Ryu, Yeong-Mi Kim
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Publication number: 20100278512Abstract: 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: ApplicationFiled: March 3, 2008Publication date: November 4, 2010Applicant: Gwangju Institute of Science and TechnologyInventors: Je-Ha Ryu, Yeong-Mi Kim, Jong-Eun Cha, Yong-Won Seo
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Publication number: 20090309827Abstract: 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: ApplicationFiled: February 29, 2008Publication date: December 17, 2009Applicant: Gwangiu Institute of Science and TechnologyInventors: Je-Ha Ryu, Yeong-Mi Kim, Jong-Eun Cha, Yong-Won Seo
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Patent number: 7420539Abstract: A method of stabilizing a haptic interface and a haptic system using the same, are provided.Type: GrantFiled: October 20, 2004Date of Patent: September 2, 2008Assignee: Gwangju Institute of Science and TechnologyInventors: Je-Ha Ryu, Jong-Phil Kim
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Publication number: 20050231480Abstract: A method of stabilizing a haptic interface and a haptic system using the same, are provided.Type: ApplicationFiled: October 20, 2004Publication date: October 20, 2005Applicant: Gwangju Institute of Science and TechnologyInventors: Jong-Phil Kim, Je-Ha Ryu