Patents by Inventor Chan-gook Park
Chan-gook Park 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: 11415590Abstract: A processor-implemented posture determination method includes: estimating a rotational acceleration of a timepoint based on an angular velocity measured by a first sensor at the timepoint and a determined center of rotation of a previous timepoint; correcting an acceleration measured by a second sensor at the timepoint based on the rotational acceleration; and determining a center of rotation of the timepoint and a posture of the timepoint based on the corrected acceleration and an estimated posture of the timepoint.Type: GrantFiled: December 9, 2019Date of Patent: August 16, 2022Assignees: Samsung Electronics Co., Ltd., SNU R&DB FOUNDATIONInventors: Hyun Cheol Jeon, Chan Gook Park, Keechang Lee, Jungmin Park, So Young Park
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Publication number: 20200400704Abstract: A processor-implemented posture determination method includes: estimating a rotational acceleration of a timepoint based on an angular velocity measured by a first sensor at the timepoint and a determined center of rotation of a previous timepoint; correcting an acceleration measured by a second sensor at the timepoint based on the rotational acceleration; and determining a center of rotation of the timepoint and a posture of the timepoint based on the corrected acceleration and an estimated posture of the timepoint.Type: ApplicationFiled: December 9, 2019Publication date: December 24, 2020Applicants: Samsung Electronics Co., Ltd., SNU R&DB FOUNDATIONInventors: Hyun Cheol JEON, Chan Gook PARK, Keechang LEE, Jungmin PARK, So Young PARK
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Patent number: 9713500Abstract: Disclosed herein is a surgical robot control apparatus, in which a control stick member is connected to an upper surface of a base member, pivots and rotates around a connection portion, and is provided with a rotary button control member, a mode switching button member, and a control member which can be operated with the thumb. Thus, the surgical robot control apparatus can realize multiple functions. A surgeon can grasp the control stick member to easily control operation of a surgical robot and can perform other work using the other hand. Thereby, when performing surgery, the surgical robot control apparatus remarkably reduces the fatigue of the surgeon, thereby providing a surgical environment that is convenient and safe; and which provides maximized efficiency. Further, the surgical robot control apparatus can increase the safety of a patient using a safety device based on a buttons, software, and hardware while performing surgery.Type: GrantFiled: May 18, 2015Date of Patent: July 25, 2017Assignee: SNU R&DB FOUNDATIONInventors: Sungwan Kim, Youdan Kim, Hyeon Hoe Kim, Hee Chan Kim, Chan Gook Park, Choonghee Lee, Chiwon Lee, Yong Hyun Park, Seungwoo Noh, Chiyul Yoon
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Patent number: 9410808Abstract: A method and apparatus for detecting location information using a navigation algorithm are provided. The method includes searching for neighboring Global Positioning System (GPS) satellites, receiving, if at least one GPS satellite is detected, pseudo-range information from at least one of the detected GPS satellites and storing the received pseudo-range information, calculating a displacement of a pedestrian terminal based on step detection of a pedestrian, correcting the calculated displacement of the pedestrian terminal using the received pseudo-range information, and measuring the location of the pedestrian terminal is measured using the corrected displacement.Type: GrantFiled: January 4, 2012Date of Patent: August 9, 2016Assignees: Samsung Electronics Co., Ltd., Seoul National University R & DB FoundationInventors: Kyong-Ha Park, Chan-Gook Park, Hyun-Su Hong, Sung-Min Park, Seung-Hyuck Shin
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Publication number: 20160179190Abstract: Provided are a method and apparatus for estimating a position of a pedestrian in a virtual reality. A method of estimating a position of a pedestrian walking on a locomotion interface device includes detecting a stance phase based on first sensed data; receiving driving speed information of the locomotion interface device from the locomotion interface device; and estimating a step length of the pedestrian based on second sensed data, in which the step length is estimated in consideration of a driving speed of the locomotion interface device in the stance phase. It is possible to estimate a distance actually traveled by a pedestrian and a position of the pedestrian in a virtual reality.Type: ApplicationFiled: January 22, 2015Publication date: June 23, 2016Inventors: So-Yeon Lee, Sang-Joon Park, Yang-Koo Lee, Chan-Gook Park, Min-Su Lee, Ho-Jin Ju
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Patent number: 9151622Abstract: A method of estimating a moving direction of a user of an apparatus is provided. The method includes obtaining change information of acceleration according to motions of the user from an acceleration sensor mounted in an apparatus for estimating the moving direction of the user, calculating a reaction vector of force applied to a ground surface by feet of the user based on the change information of the acceleration, calculating an included angle between the moving direction of the user based on the reaction vector and an axis of a geomagnetic sensor that is included in the apparatus and detects change information of a magnetic field according to a position of the user, and determining the moving direction of the user based on a moving direction measurement value of the geomagnetic sensor mounted in the apparatus and the included angle.Type: GrantFiled: November 20, 2014Date of Patent: October 6, 2015Assignees: Samsung Electronics Co., Ltd., Seoul National University R&DB FoundationInventors: Seung-hyuck Shin, Chan-gook Park, Jae-myeon Lee, Hyun-su Hong
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Publication number: 20150245876Abstract: Disclosed herein is a surgical robot control apparatus, in which a control stick member is connected to an upper surface of a base member, pivots and rotates around a connection portion, and is provided with a rotary button control member, a mode switching button member, and a control member which can be operated with the thumb. Thus, the surgical robot control apparatus can realize multiple functions. A surgeon can grasp the control stick member to easily control operation of a surgical robot and can perform other work using the other hand. Thereby, when performing surgery, the surgical robot control apparatus remarkably reduces the fatigue of the surgeon, thereby providing a surgical environment that is convenient and safe; and which provides maximized efficiency. Further, the surgical robot control apparatus can increase the safety of a patient using a safety device based on a buttons, software, and hardware while performing surgery.Type: ApplicationFiled: May 18, 2015Publication date: September 3, 2015Inventors: Sungwan KIM, Youdan KIM, Hyeon Hoe KIM, Hee Chan KIM, Chan Gook PARK, Choonghee LEE, Chiwon LEE, Yong Hyun PARK, Seungwoo NOH, Chiyul YOON
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Publication number: 20150142312Abstract: A method of estimating a moving direction of a user of an apparatus is provided. The method includes obtaining change information of acceleration according to motions of the user from an acceleration sensor mounted in an apparatus for estimating the moving direction of the user, calculating a reaction vector of force applied to a ground surface by feet of the user based on the change information of the acceleration, calculating an included angle between the moving direction of the user based on the reaction vector and an axis of a geomagnetic sensor that is included in the apparatus and detects change information of a magnetic field according to a position of the user, and determining the moving direction of the user based on a moving direction measurement value of the geomagnetic sensor mounted in the apparatus and the included angle.Type: ApplicationFiled: November 20, 2014Publication date: May 21, 2015Inventors: Seung-hyuck SHIN, Chan-gook PARK, Jae-myeon LEE, Hyun-su HONG
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Patent number: 8990046Abstract: A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal.Type: GrantFiled: July 11, 2011Date of Patent: March 24, 2015Assignees: Samsung Electronics Co., Ltd., Seoul National University R&DB FoundationInventors: Jae-Myeon Lee, Chan-Gook Park, Hyun-Su Hong, Seung-Hyuck Shin, Min-Su Lee, Sun-Young Park
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Patent number: 8775009Abstract: Provided are a fault detector and a fault detection method for an attitude control system (ACS) of a spacecraft. The fault detector includes a first interacting multiple model (IMM) fault detection block for generating a normal model filter of the plurality of actuators and a plurality of upper level filters including fault model filters corresponding to the respective actuators, and detecting faults of the plurality of actuators using an IMM estimation technique from the plurality of upper level filters, and a second IMM fault detection block for generating a plurality of lower level filters each including a fault type model filter of the fault-detected actuator in the first IMM fault detection block, and detecting a fault type of the failed actuator using the IMM estimation technique.Type: GrantFiled: November 16, 2010Date of Patent: July 8, 2014Assignee: SNU R&DB FoundationInventors: Chan Gook Park, Jun Han Lee, Won Hee Lee
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Publication number: 20130282275Abstract: A method and apparatus for detecting location information using a navigation algorithm are provided. The method includes searching for neighboring Global Positioning System (GPS) satellites, receiving, if at least one GPS satellite is detected, pseudo-range information from at least one of the detected GPS satellites and storing the received pseudo-range information, calculating a displacement of a pedestrian terminal based on step detection of a pedestrian, correcting the calculated displacement of the pedestrian terminal using the received pseudo-range information, and measuring the location of the pedestrian terminal is measured using the corrected displacement.Type: ApplicationFiled: January 4, 2012Publication date: October 24, 2013Applicants: SEOUL NATIONAL UNIVERSITY R & DB FOUNDATION, Samsung Electronics Co.Ltd.Inventors: Kyong-Ha Park, Chan-Gook Park, Hyun-Su Hong, Sung-Min Park, Seung-Hyuck Shin
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Publication number: 20130103199Abstract: Disclosed herein is a surgical robot control apparatus, in which a control stick member is connected to an upper surface of a base member, pivots and rotates around a connection portion, and is provided with a rotary button control member, a mode switching button member, and a control member which can be operated with the thumb Thus, the surgical robot control apparatus can realize multiple functions. A surgeon can grasp the control stick member to easily control operation of a surgical robot and can perform other work using the other hand. Thereby, when performing surgery, the surgical robot control apparatus remarkably reduces the fatigue of the surgeon, thereby providing a surgical environment that is convenient and safe and provides maximized efficiency. Further, the surgical robot control apparatus can increase the safety of a patient using a safety device based on a buttons and software while performing surgery.Type: ApplicationFiled: August 14, 2012Publication date: April 25, 2013Applicant: SNU R&DB FOUNDATIONInventors: Sungwan KIM, Youdan KIM, Hyeonhoe KIM, Hee Chan KIM, Chan Gook PARK, Choonghee LEE, Chiwon LEE, Yong Hyun PARK, Seungwoo NOH, Chiyul YOON
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Publication number: 20130053064Abstract: A method determines a heading angle of a user terminal in a Wireless Local Area Network (WLAN) system. The method includes examining whether a rotation of a user is detected, upon detecting the rotation, attaining a movement direction vector at a time when the rotation is detected, and attaining the heading angle by using the movement direction vector at the time when the rotation is detected.Type: ApplicationFiled: August 31, 2012Publication date: February 28, 2013Applicants: SNU R&DB FOUNDATION, Samsung Electronics Co., Ltd.Inventors: Kyong-Ha Park, Sung-Min Park, Hyun-Su Hong, Joon-Goo Park, Chan-Gook Park, Hyun-Hun Cho
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Publication number: 20120278024Abstract: A position estimation apparatus may measure 3-axis accelerations by at least two acceleration sensors disposed at different distances from a center of rotation of the position estimation apparatus, measure 3-axis angular velocity by a gyro sensor, and detect an azimuth angle using a geomagnetic sensor. Using the 3-axis accelerations measured by the acceleration sensors and the 3-axis angular velocity measured by the gyro sensor, the position estimation apparatus calculates gravity acceleration from which a rotational motion component is extracted.Type: ApplicationFiled: February 8, 2012Publication date: November 1, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyong Euk Lee, Bho Ram Lee, Sang Hyun Kim, Won Chul Bang, Chan Gook Park, Chul Woo Kang, Chang Ho Kang
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Patent number: 8280678Abstract: An apparatus and method for estimating a step length of a user are provided. The apparatus and method use a step length estimation algorithm, e.g. a step length estimation parameter coefficient, according to a movement state of a user, i.e. whether the movement state is a walking state or a running state. The movement state of the user is determined on the basis of an acceleration variance value of an acceleration signal output from an accelerometer. Accordingly, the apparatus and method prevent errors in step length determinations.Type: GrantFiled: October 31, 2007Date of Patent: October 2, 2012Assignees: Samsung Electronics Co., Ltd., Seoul National University Industry FoundationInventors: Jae-Myeon Lee, Hyun-Su Hong, Chan-Gook Park, Jin-Won Kim, Kyong-Ha Park, Ji-Heon Oh
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Publication number: 20120053780Abstract: Provided are a fault detector and a fault detection method for an attitude control system (ACS) of a spacecraft. The fault detector includes a first interacting multiple model (IMM) fault detection block for generating a normal model filter of the plurality of actuators and a plurality of upper level filters including fault model filters corresponding to the respective actuators, and detecting faults of the plurality of actuators using an IMM estimation technique from the plurality of upper level filters, and a second IMM fault detection block for generating a plurality of lower level filters each including a fault type model filter of the fault-detected actuator in the first IMM fault detection block, and detecting a fault type of the failed actuator using the IMM estimation technique.Type: ApplicationFiled: November 16, 2010Publication date: March 1, 2012Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Chan Gook PARK, Jun Han LEE, Won Hee LEE
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Publication number: 20120006112Abstract: A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal.Type: ApplicationFiled: July 11, 2011Publication date: January 12, 2012Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-Myeon Lee, Chan-Gook Park, Hyun-Su Hong, Seung-Hyuck Shin, Min-Su Lee, Sun-Young Park
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Publication number: 20120004881Abstract: Walking status estimation in a portable terminal includes a method for estimating walking status. The method includes setting an observation using an estimated temporary step length, an acceleration variance, and a step frequency. The method also includes generating an observed probability vector comprising probabilities per walking status according to the observation. The method further includes determining final probabilities per walking status by multiplying the observed probability vector by at least one of an initial probability matrix and one or more status transition probability vectors. The method still further includes determining a walking status having the greatest final probability as a final walking status.Type: ApplicationFiled: June 24, 2011Publication date: January 5, 2012Applicants: SNU R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: Yung-Keun Jung, Hyun-Su Hong, Jae-Myeon Lee, Chan-Gook Park, Min-Su Lee, Seung-Hyuck Shin
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Patent number: 7640134Abstract: A step detecting apparatus and method in a personal navigator where acceleration signals in at least two directions are acquired from an accelerometer sensor, as a pedestrian moves. Variances of the acceleration signals are calculated and summed. The variance sum is compared with a threshold. If the variance sum is greater than the threshold, it is determined that a detected step is a walking step. If the variance sum is less than the threshold, it is determined that the detected step is a mark-time step.Type: GrantFiled: September 18, 2006Date of Patent: December 29, 2009Assignees: Samsung Electronics Co., Ltd, Seoul National University Industry FoundationInventors: Kyong-Ha Park, Hyun-Su Hong, Jae-Myeon Lee, Chan-Gook Park, Jin-Won Kim
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Patent number: 7627450Abstract: An apparatus and method for determining a location of a movement distance measuring apparatus are provided. The apparatus and method determine whether the movement distance measuring apparatus is mounted at the waist of a pedestrian or is located in a pocket and uses a different step length estimation algorithm, e.g. a different step length estimation parameter coefficient, corresponding to the determined mounting position. The determination of whether the movement distance measuring apparatus is mounted to the waist of a pedestrian or is located in a pocket is performed on the basis of a gyro sensor.Type: GrantFiled: October 31, 2007Date of Patent: December 1, 2009Assignees: Samsung Electronics Co., Ltd., Seoul National University Industry FoundationInventors: Jae-Myeon Lee, Hyun-Su Hong, Chan-Gook Park, Jin-Won Kim, Kyong-Ha Park, Ji-Heon Oh