Patents by Inventor Junsuk Lee
Junsuk Lee 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: 11951394Abstract: An image acquisition apparatus for acquiring an in-game 360 virtual reality (VR) image by using a plurality of virtual cameras includes a virtual camera group taking in-game images by using the plurality of virtual cameras. The image acquisition apparatus may also include a renderer generating textures for the taken images, generating a panoramic image by performing an equirectangular projection (ERP) mapping of the generated textures, and encoding the generated panoramic image. The image acquisition apparatus may further include an image generator generating a 360 VR image by combining audio information with the encoded panoramic image.Type: GrantFiled: April 20, 2021Date of Patent: April 9, 2024Assignee: Korea Electronics Technology InstituteInventors: Junhwan Jang, Woochool Park, Jinwook Yang, Sangpil Yoon, Minsu Choi, Junsuk Lee, Suho Song, Bonjae Koo
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Patent number: 11950190Abstract: To perform a first communication with a first base station through the first communication circuit by using a first frequency band, perform a second communication with a second base station through the second communication circuit by using a second frequency band, determine whether the first communication interferes with the second communication, and transmit, to the second base station for the second communication on the basis of the determination result, a request for using a third frequency band, which is different from the second frequency band in at least one from among bandwidth, center frequency, or sub-carrier spacing (SCS). Other various embodiments are possible.Type: GrantFiled: October 28, 2019Date of Patent: April 2, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Junsuk Kim, Hongju Park, Sangho Lee, Taelee Lee, Taeseop Lee, Wonsuk Chung, Suyoung Park
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Publication number: 20240107098Abstract: Proposed are a mediation server operation method for an XR streaming service and XR streaming system supporting same, the mediation server operation method comprising the steps of: if a mediation server receives an XR content playback request from a connected user device, searching for an idle split rendering server; allocating the found idle split rendering server to the user device; receiving image data and sensor data from the user device; generating a rotation matrix on the basis of the received image data and sensor data; and transmitting the rotation matrix to the allocated split rendering server.Type: ApplicationFiled: December 5, 2023Publication date: March 28, 2024Inventors: Junhwan JANG, Woochool PARK, Minsu CHOI, Junsuk LEE, Bonjae KOO
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Patent number: 11917727Abstract: An electronic device includes a communication processor including a first communication circuitry, a second communication circuitry, and a temperature measurement sensor. The electronic device further includes an application processor that receives information via the second communication circuitry and determines whether to request the communication processor change modes. The communication processor receives a signal to change modes, release an RRC connection, and control the second communication circuitry to enter a sleep state.Type: GrantFiled: October 3, 2022Date of Patent: February 27, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Junsuk Kim, Sangho Lee, Jangbok Lee, Wonsuk Chung, Sohmann Kim, Byunggil Lee, Seonmi Kim, Jongmin Baik, Kyunghoon Lee, Jookwan Lee, Suyoung Park, Sunmin Hwang
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Publication number: 20230100111Abstract: A content server and method supporting low-latency content streaming are proposed. The content server may include a communication unit and a controller. The communication unit may perform communication with a user terminal. The controller may calculate coordinates for a current user's location and camera pose and create a three-dimensional (3D) space by using terminal data including an image received from the user terminal upon detecting access of the user terminal. Also, the controller may position an object in the created 3D space, render a video reproduced from a user's viewpoint as a two-dimensional (2D) video, generate server data by segmenting the rendered 2D video, and transmit the generated server data to the user terminal.Type: ApplicationFiled: December 7, 2022Publication date: March 30, 2023Inventors: Junhwan JANG, Woochool PARK, Jinwook YANG, Minsu CHOI, Junsuk LEE, Bonjae KOO
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Publication number: 20230084960Abstract: An edge server for providing a virtual reality (VR) image is proposed. The server may include a rendering synchronization unit synchronizing a visual field and a margin with a virtual reality device. The server may also include a rendering unit generating a rendered image by rendering a visual field area corresponding to the visual field and a margin area corresponding to the margin based on a rotation center in an entire virtual reality image. The server may further include an encoding unit generating a reduced margin area by dividing a resolution of the margin area by a scaling factor, and encoding the visual field area and the reduced margin area to generate a split virtual reality image including the encoded visual field area and the encoded reduced margin area. The server may further include a streaming transmission unit transmitting the split virtual reality image to the virtual reality device.Type: ApplicationFiled: November 16, 2022Publication date: March 16, 2023Inventors: Junhwan JANG, Woochool PARK, Jinwook YANG, Minsu CHOI, Junsuk LEE, Bonjae KOO
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Patent number: 11115639Abstract: The described technology provides a system and method of generating a 360-degree panoramic virtual reality (VR) image by using a plurality of photograph images. A plurality of image capturing devices capture and transmit the plurality of photograph images, respectively. An image conversion device receives the plurality of photograph images from the plurality of image capturing devices, calibrates each of the plurality of photograph images using characteristic information of respective one of the plurality of image capturing devices, and stitches calibrated photograph images to generate the 360-degree panoramic VR image. According to embodiments, the user can check a situation of a monitoring area while changing the viewpoint of the 360-degree panoramic VR image or enjoy the generated VR contents at a high degree of immersion.Type: GrantFiled: November 21, 2018Date of Patent: September 7, 2021Assignee: Korea Electronics Technology InstituteInventors: Woochool Park, Junhwan Jang, Younghwa Kim, Jinwook Yang, Sangpil Yoon, Hyunwook Kim, Eunkyung Cho, Minsu Choi, Junsuk Lee, Jaeyoung Yang
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Publication number: 20210236929Abstract: This application relates to an apparatus and method for acquiring an in-game 360 virtual reality (VR) image by using a plurality of virtual cameras. In one aspect, the image acquisition apparatus includes a virtual camera group taking in-game images by using the plurality of virtual cameras. The image acquisition apparatus may also include a renderer generating textures for the taken images, generating a panoramic image by performing an equirectangular projection (ERP) mapping of the generated textures, and encoding the generated panoramic image. The image acquisition apparatus may further include an image generator generating a 360 VR image by combining audio information with the encoded panoramic image.Type: ApplicationFiled: April 20, 2021Publication date: August 5, 2021Inventors: Junhwan JANG, Woochool PARK, Jinwook YANG, Sangpil YOON, Minsu CHOI, Junsuk LEE, Suho SONG, Bonjae KOO
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Patent number: 11025880Abstract: A region of interest (ROI)-based virtual reality (VR) content streaming server and a method are disclosed. The streaming server includes a communication unit that receives a request signal for a media presentation description (MPD) file regarding tiles of a tiled video, ROI) information, and a request signal for a segment file from an electronic device, and transmits the MPD file and the segment file corresponding to the request signal to the electronic device. The streaming server further includes a controller configured to, when the request signal for the MPD file is received, control the MPD file corresponding to the request signal to be transmitted to the electronic device.Type: GrantFiled: December 13, 2019Date of Patent: June 1, 2021Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Junhwan Jang, Woochool Park, Youngwha Kim, Jinwook Yang, Sangpil Yoon, Hyunwook Kim, Eunkyung Cho, Minsu Choi, Junsuk Lee, Jaeyoung Yang
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Patent number: 10924782Abstract: The present disclosure provides a system for providing an image-segmentation based streaming service. The system includes a communication circuit configured to establish a communication channel with a streaming server, a storage configured to store data provided by the streaming server, a display configured to output an image, a processor functionally connected to the communication circuit, the storage, and the display. The processor can detect a region-of-interest (ROI) of an output image associated with a media presentation description (MPD) provided by the streaming server and transmit the ROI information to the streaming server. The processor can also receive image segments of a first resolution corresponding to the ROI information and a full image of a second resolution from the streaming server. The processor can also synthesize the image segments of the first resolution and the full image of the second resolution to output a synthesized reconstruction image through the display.Type: GrantFiled: November 29, 2018Date of Patent: February 16, 2021Assignee: Korea Electronics Technology InstituteInventors: Woochool Park, Junhwan Jang, Youngwha Kim, Jinwook Yang, Sangpil Yoon, Hyunwook Kim, Eunkyung Cho, Minsu Choi, Junsuk Lee, Jaeyoung Yang
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Patent number: 10880534Abstract: An electronic device and a method for a tiled video multi-channel playback are disclosed. The electronic device includes a device communication unit and a device controller. The device communication unit establishes a communication channel with a streaming server. The device controller can detect a region of interest (ROI) of an image related to a media presentation description (MPD) tile provided by the streaming server, transmit ROI information to the streaming server and receive tiles of a tiled video having a first resolution and corresponding to the ROI information, a full video having a second resolution lower than the first resolution, and a plurality of 2D videos from the streaming server. The device controller can also generate a 360-degree VR video by synthesizing the video tiles and the full video, and control a simultaneous playback of the generated 360-degree VR video and the plurality of 2D videos.Type: GrantFiled: December 13, 2019Date of Patent: December 29, 2020Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Junhwan Jang, Woochool Park, Youngwha Kim, Jinwook Yang, Sangpil Yoon, Hyunwook Kim, Eunkyung Cho, Minsu Choi, Junsuk Lee, Jaeyoung Yang
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Patent number: 10880475Abstract: Disclosed are a video conversion apparatus and a system for generating a 360-degree VR video in real time. The video conversion apparatus includes an input unit and a controller. The input unit receives a plurality of pieces of video information having continuity from a video recording apparatus including a plurality of cameras. The controller captures the plurality of pieces of video information received from the input unit, encodes the captured pieces of video information in a parallel structure, and stitches the encoded pieces of video information to generate a 360-degree VR video.Type: GrantFiled: December 13, 2019Date of Patent: December 29, 2020Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Junhwan Jang, Woochool Park, Youngwha Kim, Jinwook Yang, Sangpil Yoon, Hyunwook Kim, Eunkyung Cho, Minsu Choi, Junsuk Lee, Jaeyoung Yang
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Publication number: 20200154092Abstract: An electronic device and a method for a tiled video multi-channel playback are disclosed. The electronic device includes a device communication unit and a device controller. The device communication unit establishes a communication channel with a streaming server. The device controller can detect a region of interest (ROI) of an image related to a media presentation description (MPD) tile provided by the streaming server, transmit ROI information to the streaming server and receive tiles of a tiled video having a first resolution and corresponding to the ROI information, a full video having a second resolution lower than the first resolution, and a plurality of 2D videos from the streaming server. The device controller can also generate a 360-degree VR video by synthesizing the video tiles and the full video, and control a simultaneous playback of the generated 360-degree VR video and the plurality of 2D videos.Type: ApplicationFiled: December 13, 2019Publication date: May 14, 2020Inventors: Junhwan JANG, Woochool PARK, Youngwha KIM, Jinwook YANG, Sangpil YOON, Hyunwook KIM, Eunkyung CHO, Minsu CHOI, Junsuk LEE, Jaeyoung YANG
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Publication number: 20200145636Abstract: A region of interest (ROI)-based virtual reality (VR) content streaming server and a method are disclosed. The streaming server includes a communication unit that receives a request signal for a media presentation description (MPD) file regarding tiles of a tiled video, ROI) information, and a request signal for a segment file from an electronic device, and transmits the MPD file and the segment file corresponding to the request signal to the electronic device. The streaming server further includes a controller configured to, when the request signal for the MPD file is received, control the MPD file corresponding to the request signal to be transmitted to the electronic device.Type: ApplicationFiled: December 13, 2019Publication date: May 7, 2020Inventors: Junhwan JANG, Woochool PARK, Youngwha KIM, Jinwook YANG, Sangpil YOON, Hyunwook KIM, Eunkyung CHO, Minsu CHOI, Junsuk LEE, Jaeyoung YANG
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Publication number: 20200137305Abstract: Disclosed are a video conversion apparatus and a system for generating a 360-degree VR video in real time. The video conversion apparatus includes an input unit and a controller. The input unit receives a plurality of pieces of video information having continuity from a video recording apparatus including a plurality of cameras. The controller captures the plurality of pieces of video information received from the input unit, encodes the captured pieces of video information in a parallel structure, and stitches the encoded pieces of video information to generate a 360-degree VR video.Type: ApplicationFiled: December 13, 2019Publication date: April 30, 2020Inventors: Junhwan JANG, Woochool PARK, Youngwha KIM, Jinwook YANG, Sangpil YOON, Hyunwook KIM, Eunkyung CHO, Minsu CHOI, Junsuk LEE, Jaeyoung YANG
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Publication number: 20190166391Abstract: The present disclosure provides a system for providing an image-segmentation based streaming service. The system includes a communication circuit configured to establish a communication channel with a streaming server, a storage configured to store data provided by the streaming server, a display configured to output an image, a processor functionally connected to the communication circuit, the storage, and the display. The processor can detect a region-of-interest (ROI) of an output image associated with a media presentation description (MPD) provided by the streaming server and transmit the ROI information to the streaming server. The processor can also receive image segments of a first resolution corresponding to the ROI information and a full image of a second resolution from the streaming server. The processor can also synthesize the image segments of the first resolution and the full image of the second resolution to output a synthesized reconstruction image through the display.Type: ApplicationFiled: November 29, 2018Publication date: May 30, 2019Inventors: Woochool PARK, Junhwan JANG, Youngwha KIM, Jinwook YANG, Sangpil YOON, Hyunwook KIM, Eunkyung CHO, Minsu CHOI, Junsuk LEE, Jaeyoung YANG
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Publication number: 20190158804Abstract: The described technology provides a system and method of generating a 360-degree panoramic virtual reality (VR) image by using a plurality of photograph images. A plurality of image capturing devices capture and transmit the plurality of photograph images, respectively. An image conversion device receives the plurality of photograph images from the plurality of image capturing devices, calibrates each of the plurality of photograph images using characteristic information of respective one of the plurality of image capturing devices, and stitches calibrated photograph images to generate the 360-degree panoramic VR image. According to embodiments, the user can check a situation of a monitoring area while changing the viewpoint of the 360-degree panoramic VR image or enjoy the generated VR contents at a high degree of immersion.Type: ApplicationFiled: November 21, 2018Publication date: May 23, 2019Inventors: Woochool PARK, Junhwan JANG, Younghwa KIM, Jinwook YANG, Sangpil YOON, Hyunwook KIM, Eunkyung CHO, Minsu CHOI, Junsuk LEE, Jaeyoung YANG
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Patent number: 8682095Abstract: A method for recognizing markers printed on a learning material, includes sampling an image of the learning material; grouping the sampled image of pixels into a first image group and a second image group based on a threshold; and calculating medians of the first image group and the second image group to update the threshold with a first average value of the calculated medians. Further, the method for recognizing markers printed on the learning material includes repeating the above until a difference between a previous threshold and an updated threshold is equal to or smaller than a reference value; binarizing an image captured by a camera based on the updated threshold; and detecting the markers based on the binary image.Type: GrantFiled: July 1, 2009Date of Patent: March 25, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Su Woong Lee, Junsuk Lee, Yong Hun Kim, Seokjae Lee, Sangwon Um, Shihua Ming
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Publication number: 20120163661Abstract: An apparatus for recognizing multi-user interactions includes: a pre-processing unit for receiving a single visible light image to perform pre-processing; a motion region detecting unit for detecting a motion region from the image to generate motion blob information; a skin region detecting unit for extracting information on a skin color region from the image to generate a skin blob list; a Haar-like detecting unit for performing Haar-like face and eye detection by using only contrast information from the image; a face tracking unit for recognizing a face of a user from the image by using the skin blob list and results of the Haar-like face and eye detection; and a hand tracking unit for recognizing a hand region of the user from the image.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Junsup LEE, Seokbin KANG, Soo Young KIM, Jae Sang YOO, Junsuk LEE
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Publication number: 20120107790Abstract: A method of authoring experiential learning content includes displaying an authoring window to author the experiential learning content when a request is made to author the experiential learning content; and creating a virtual world by loading and arranging 3D objects and a 2D objects, in the authoring window, which corresponds to a scenario of the experiential learning content. Further, the method includes defining an Action-zone that determines a position where a user is merged in the virtual world; and defining a state by dividing the scenario into a plurality of steps as time goes by based on the scenario to play the experiential learning content from a specific time point, respectively. Furthermore, the method includes defining a processing routine of an event occurred in the state; and authoring the experiential learning content according to the defined Action-zone, the defined state, and the defined processing routine.Type: ApplicationFiled: October 31, 2011Publication date: May 3, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Su Woong LEE, Jong-Gook KO, Junsuk LEE, Seokbin KANG, Jaemo SUNG, Gil haeng LEE