Patents by Inventor Hun Cha

Hun Cha 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).

  • Publication number: 20170063488
    Abstract: Rate adaptation is carried out using bit error rate (BER) to enable effective multimedia transmission. The BER can be estimated using signal strength in a MAC layer and modulation information (FIGS. 7-9), and can be compatibly used in different wireless networks by means of message standardization.
    Type: Application
    Filed: November 11, 2016
    Publication date: March 2, 2017
    Inventors: Yong Ju CHO, Ji Hun CHA
  • Patent number: 9509439
    Abstract: Rate adaptation is carried out using bit error rate (BER) to enable effective multimedia transmission. The BER can be estimated using signal strength in a MAC layer and modulation information (FIGS. 7-9), and can be compatibly used in different wireless networks by means of message standardization.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: November 29, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT
    Inventors: Yong Ju Cho, Ji Hun Cha
  • Publication number: 20160299527
    Abstract: An electronic device is provided. The electronic device includes a window panel having a front area and a curved area extending from the front area, a display panel disposed beneath the window panel, and a fixed part which supports a curved area of the display panel. The display panel includes a front display area, a side display area extending from the front display area so as to be curved, and a wiring area extending from the side display area, and the fixed part supports a curved shape of the side display area or the wiring area.
    Type: Application
    Filed: April 11, 2016
    Publication date: October 13, 2016
    Inventors: Woon Geun KWAK, Jung Sik PARK, Do Hun CHA
  • Publication number: 20160291642
    Abstract: An electronic device may include: a foldable body transitionable between an unfolded state and a folded state; a flexible display device disposed on a front face of the body, the flexible display being foldable together with the body; and a cover that enclosing at least a portion of a rear face of the body, the cover being foldable together with the body. The flexible display may include an exposed region that remains visible when the foldable body is in the folded state.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 6, 2016
    Inventors: Woon-Geun KWAK, Jung-Sik PARK, Jae-Ouk CHUNG, Do-Hun CHA, Kyung-Jung KIM, Seung-Won OH
  • Publication number: 20160292821
    Abstract: An apparatus and a method for displaying a panoramic image using a look-up table (LUT) are disclosed, including generating an LUT may include determining first geometric correction information to transform an input domain pixel coordinate system of an input image to a panorama domain pixel coordinate system of a panoramic image, determining second geometric correction information to transform an output domain pixel coordinate system of an output image of the panoramic image to the panorama domain pixel coordinate system of the panoramic image, determining third geometric correction information to transform the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image based on the first geometric correction information and second geometric correction information, and generating an LUT that maps the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image.
    Type: Application
    Filed: April 4, 2016
    Publication date: October 6, 2016
    Inventors: Yong Ju CHO, Joo Myoung SEOK, Sang Woo AHN, Ji Hun CHA, Arshad ALI, Muhammad MURTAZA, Rehan HAFIZ, Ashar RASUL, Saleh SAEED, Muhammad Umer KAKLI
  • Publication number: 20160267347
    Abstract: Provided is an apparatus and method for detecting a key point using a high-order Laplacian of Gaussian (LoG) kernel, wherein the method includes generating the high-order LoG kernel using an LoG operator, and detecting a key point of an image using the high-order LoG kernel.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yong Ju CHO, Unsang PARK, Joo Myoung SEOK, Sang Woo AHN, Ji Hun CHA
  • Patent number: 9426447
    Abstract: A gaze tracking apparatus and method are provided that may calculate a three-dimensional (3D) position of a user using at least two wide angle cameras, may perform panning, tilting, and focusing based on position information of the user and eye region detection information, using a narrow angle camera, may detect pupil center information and corneal reflected light information from an eye image acquired through an operation of the narrow angle camera, and may finally calculate gaze position information from the pupil center information and the corneal reflected light information.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: August 23, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hee Kyung Lee, In Jae Lee, Ji Hun Cha, Whoi Yul Kim, Dong Chan Cho
  • Publication number: 20160212338
    Abstract: Disclosed are a method and an apparatus for generating a panoramic image based on an image quality. The method of generating a panoramic image includes extracting a matching point to connect a base image captured by a first camera and a reference image captured by a second camera, geometrically transforming the reference image by determining a homography between the base image and the reference image, determining a change in image quality of the geometrically transformed reference image, and generating a panoramic image in which the geometrically transformed reference image is connected to the base image based on the determined change in image quality.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 21, 2016
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA
  • Publication number: 20160147293
    Abstract: A method of controlling a plurality of input/output (I/O) device is provided. The method includes acquiring an input through an electronic device that includes an exterior, on which no substantially visible hole is formed, determining situation information for a user who handles the electronic device, performing input/output through a first I/O device disposed in a first area of the electronic device when the situation information is first situation information in response to an input, and performing input/output through a second I/O device disposed in a second area of the electronic device when the situation information is second situation information in response to an input.
    Type: Application
    Filed: November 20, 2015
    Publication date: May 26, 2016
    Inventors: Jung-Sik PARK, Seong-Eun KIM, Ju-Nyun KIM, Byoung-Uk YOON, Do-Hun CHA, Hyun-Ju HONG, Yo-Han LEE, Jae-Ouk CHUNG
  • Patent number: 9313473
    Abstract: An image synthesizing method according to the present invention includes generating a depth image in a current picture by searching depth information using a plurality of color images obtained at different view points, performing filtering on the depth image using a 3-dimensional (3D) joint bilateral filter, and generating a synthesized image using the plurality of color images and the filtered depth image, wherein the 3D joint bilateral filter performs filtering on the generated depth image using color image information for at least one of previous pictures, the current picture, and subsequent pictures, and the color image information includes information on a boundary of an object in the color images and color information of the color images. According to the present invention, image processing performance may be enhanced.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 12, 2016
    Assignees: Gwangju Institute of Science and Technology, Electronics and Telecommunications Research Institute
    Inventors: Seung Jun Yang, Ji Hun Cha, Jin Woong Kim, Sang Beom Lee, Yo Sung Ho
  • Patent number: 9197887
    Abstract: Provided is a geometric correction apparatus and method based on a recursive Bezier patch sub-division. A geometric correction method may include: receiving, from a camera, a first image that is obtained by photographing a black screen that is projected by a projector onto a projection surface; receiving, from the camera, a second image that is obtained by photographing a predetermined pattern that is projected by the projector onto the projection screen; generating a third image by subtracting the first image from the second image; and performing geometric correction with respect to the predetermined pattern to correct a distortion between the predetermined pattern and the third image.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: November 24, 2015
    Assignees: Electronics and Telecommunications Research Institute, National University of Sciences & Technology
    Inventors: Yong Ju Cho, Ji Hun Cha, Myung Seok Ki, Seong Yong Lim, Yong Ju Lee, Seung Kwon Beack, Jin Woong Kim, Rehan Hafiz, Muhammad Murtaza Khan, Atif Ahmed, Arshad Ali
  • Patent number: 9185288
    Abstract: An apparatus and method for generating and consuming a three-dimensional (3D) data format to generate a realistic panoramic image are provided. The apparatus may include an image preprocessing unit to search for a matching point between images captured by a plurality of cameras, and to extract, as image information, at least one of a depth value, a texture value and object division information from each of the captured images, an image information structuring unit to structure 3D data to use the extracted image information to generate a realistic image, a 3D data format storage unit to store format information of the structured 3D data in a database (DB), realistic image generating unit to generate a realistic panoramic image using the stored format information of the 3D data, and a realistic image rendering unit to perform rendering on the generated realistic panoramic image.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Myung Seok Ki, Yong Ju Cho, Seong Yong Lim, Ji hun Cha, Seung Kwon Beack, Yong Ju Lee, Jin Woong Kim, Seong Dae Kim, Wook Joong Kim, Ji Sung Yoo, Sung Soo Hwang
  • Publication number: 20150317120
    Abstract: An electronic device is provided. The electronic device includes a plurality of displays, at least one processor configured to select a first display including at least one of the plurality of displays, based on relative positions of the plurality of displays, user information, an application to be executed, or a component associated with a function of the application, and a display control module configured to output contents to the first display and at least one object associated with the contents to at least one other second display of the plurality of displays.
    Type: Application
    Filed: May 4, 2015
    Publication date: November 5, 2015
    Inventors: Seong Eun KIM, Ju Nyun KIM, Myung Hun BAE, Hyun Ju HONG, Do Hun CHA, Jung Sik PARK, Se Jun SONG, Heung Sik SHIN, Myung Gon HONG
  • Publication number: 20150274700
    Abstract: The present invention provides a diaminopyrimidine derivative or its pharmaceutically acceptable salt, a process for the preparation thereof, a pharmaceutical composition comprising the same, and a use thereof. The diaminopyrimidine derivative or its pharmaceutically acceptable salt functions as a 5-HT4 receptor agonist, and therefore can be usefully applied for preventing or treating dysfunction in gastrointestinal motility, one of the gastrointestinal diseases, such as gastroesophageal reflux disease (GERD), constipation, irritable bowel syndrome (IBS), dyspepsia, post-operative ileus, delayed gastric emptying, gastroparesis, intestinal pseudo-obstruction, drug-induced delayed transit, or diabetic gastric atony.
    Type: Application
    Filed: February 24, 2012
    Publication date: October 1, 2015
    Applicant: YUHAN CORPORATION
    Inventors: Hyun-Joo LEE, Dong-Hoon KIM, Tae-Kyun KIM, Young-Ae YOON, Jae-Young SIM, Myung-Hun CHA, Eun-Jung JUNG, Kyoung-Kyu AHN, Tai-Au LEE
  • Publication number: 20150242678
    Abstract: A method and apparatus of recognizing a facial expression using a local feature-based adaptive decision tree are provided. A method of recognizing a facial expression by a facial expression recognition apparatus may include splitting a facial region included in an input image into local regions, extracting a facial expression feature from each of the local regions using a preset feature extracting algorithm, and recognizing a facial expression from the input image using the extracted facial expression feature based on a decision tree generated by repeatedly classifying facial expressions into two classes until one facial expression is contained in one class and determining a facial expression feature for a corresponding classification.
    Type: Application
    Filed: January 16, 2015
    Publication date: August 27, 2015
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: In Jae LEE, Chung Hyun AHN, Ji Hun CHA, Sang Youn LEE, Ji Hun OH, Yu Seok BAN
  • Publication number: 20150220299
    Abstract: An electronic device and a method for controlling displaying of information in the electronic device are provided. The electronic device includes a first display formed on at least a portion of a body of the electronic device, and a second display formed on at least a portion of a cover functionally connected to the body and including a transparent display area.
    Type: Application
    Filed: February 5, 2015
    Publication date: August 6, 2015
    Inventors: Seong Eun KIM, Seon Il KIM, Young Hoon KIM, Jung Han KIM, Ju Nyun KIM, Jung Sik PARK, Do Hun CHA, Seung Ki CHOI, Soo Hyung KIM, Chang Wan LEE, Myung Gon HONG, Hyun Ju HONG
  • Patent number: 9057632
    Abstract: A water meter of the present invention may accurately measure a flow rate and reduce power consumption. The water meter includes a body including an inlet unit and an outlet unit, an impeller unit provided to rotate due to a fluid flowing in the body, a cover member that covers one side of the impeller unit and includes a guide groove formed therein, and sensors that are provided on one side and the other side of the cover member and are spaced apart from each other to face each other. The impeller unit includes blades interfering with the fluid, a shaft forming a rotational center of the blades, and a cut-off unit that extends from one side of the plurality of blades to be inserted into the guide groove, and selectively cuts off signal transmission between the plurality of sensors.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: June 16, 2015
    Assignee: ONE-TL CO., LTD.
    Inventors: Jae Sam Park, Byeong Hak Kang, Hun Cha
  • Publication number: 20150138309
    Abstract: A stitching method of a captured image is disclosed. The stitching method includes capturing a plurality of images having different viewing angles, setting a feature point extraction region on the plural images, extracting a plurality of feature points from a plurality of objects in the set region, extracting a combination line connecting corresponding feature points based on the plural extracted feature points, outputting the extracted combination line, and combining the plural images based on the extracted combination line. Accordingly, the stitching method provides an effective and high-quality stitched image.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 21, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Joo Myoung SEOK, Seong Yong LIM, Yong Ju CHO, Ji Hun CHA
  • Patent number: 9030485
    Abstract: An apparatus and a method for correcting colors of an image projection device are provided. The method includes: acquiring a photographed image by photographing a sample image projected on projection surface; generating input-output color information for n regions, based on color values of a block in the sample image and corresponding color values of the block in the photographed image; selecting one of the n regions of photographed images as a reference region; generating look-up tables (LUTs) for non-reference regions, based on the reference region and the input and output color information; and correcting colors of input images to be projected by the image projection device using the look-up tables, thereby minimizing color difference of the input images on the projection surface for both intra and inter projection device color correction while simplifying the correction procedure.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: May 12, 2015
    Assignees: Electronics and Telecommunications Research Institute, National University of Sciences & Technology
    Inventors: Yong Ju Cho, Yong Ju Lee, Seung Kwon Beack, Ji Hun Cha, Seong Yong Lim, Myung Seok Ki, Joo Myoung Seok, Jin Woong Kim, Muhammad Murtaza Khan, Rehan Hafiz, Haris Anis, Mutahir Latif, Ashar Rasul, Arshad Ali
  • Publication number: 20150095727
    Abstract: Rate adaptation is carried out using bit error rate (BER) to enable effective multimedia transmission. The BER can be estimated using signal strength in a MAC layer and modulation information (FIGS. 7-9), and can be compatibly used in different wireless networks by means of message standardization.
    Type: Application
    Filed: June 11, 2013
    Publication date: April 2, 2015
    Inventors: Yong Ju Cho, Ji Hun Cha