Patents by Inventor Sung Tak Cho

Sung Tak Cho 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: 10999610
    Abstract: Methods and systems for providing multi-track video content includes, receiving a user request for multi-track video, the multi-track video including a plurality of videos, each of the plurality of videos corresponding to a track, each of the plurality of videos being divided into time-based video segments; requesting a first video of the plurality of videos, the first video corresponding to a first track of the multi-track video; receiving first video segments corresponding to the first video; sequentially transferring the first video segments to a player for displaying the sequentially transferred first video segments; receiving second video segments of a second video of the plurality of videos instead of receiving the first video segments, the second video segments corresponding to a second track of the multi-track video; and sequentially transferring the second video segments to the player for displaying the sequentially transferred second video segments.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: May 4, 2021
    Assignee: NAVER CORPORATION
    Inventors: Sung Tak Cho, Kyung-Ryul Sun, Sungho Kim, Yoosub Song, Joon-Kee Chang, Haneul Lee, Kukhwan Seo, Seongcheol Jo, Seungahe Yi
  • Patent number: 10404828
    Abstract: Provided are a streaming apparatus, a streaming method, and a streaming service system using the streaming apparatus, wherein the streaming apparatus includes: a scheduler configured to generate a modified metafile by modifying a reproduction list file of a metafile; and a server socket configured to transmit the modified metafile when a metafile transmit request is received from a player by operating as a server with respect to the player. Accordingly, delay times of players are substantially the same.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: September 3, 2019
    Assignee: Naver Corporation
    Inventors: Sung Tak Cho, Sung Ho Kim, Joon Kee Chang, Min Hee Choi, Ki Su Park, Kyoung Yun Kang, Young Min Kim, Dong Ock Kim, Eun Sun Shin
  • Patent number: 10045072
    Abstract: In at least one example embodiment, a content reproducing apparatus includes a display, a memory configured to store at least one program and a processor. The processor is configured to reproduce first moving image content of a plurality of moving image content selected by a user, on a first region of a screen of the display, according to a user input, display a plurality of thumbnail images corresponding to the plurality of moving image content, on a second region of the screen, buffer a second moving image content corresponding to one of the plurality of thumbnail images, the first moving image content being continuously reproduced while the second moving image content is being buffered, and reproduce the second moving image content instead of the first moving image content when the buffering of the second moving image content is completed.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 7, 2018
    Assignee: Naver Corporation
    Inventors: Sung Tak Cho, Kyung Ryul Sun, Sung Ho Kim, Yoo Sub Song, Joon Kee Chang, Haneul Lee, Kuk Hwan Seo, Seong Cheol Jo, Seung Ahe Yi
  • Patent number: 10003626
    Abstract: The present invention relates to an adaptive real-time transcoding method and a streaming server therefor to improve service quality by minimizing the disconnection of images in an environment, such as a mobile device, through adaptively changing a set value of a transcoding operation on a media streaming service to match a network environment. The adaptive real-time transcoding method of the present invention is a real-time transcoding method for sequentially transmitting a media data segment, divided and transcoded, in a streaming server to the client side over a network, the method comprising the steps of: determining the fill level of a client-side playback buffer; determining, on the basis of the fill level of the playback buffer, the image quality of media data segments that are not transmitted to the client side; and transcoding the non-transmitted media data segments according to the determined image quality.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: June 19, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Sung Ho Kim, Keun Baek Park, Joon Kee Chang, Sung Tak Cho, Won Woo Ro, Doo Hwan Oh, Keun Soo Kim, Young Jae Cho
  • Publication number: 20170214765
    Abstract: Provided are a streaming apparatus, a streaming method, and a streaming service system using the streaming apparatus, wherein the streaming apparatus includes: a scheduler configured to generate a modified metafile by modifying a reproduction list file of a metafile; and a server socket configured to transmit the modified metafile when a metafile transmit request is received from a player by operating as a server with respect to the player. Accordingly, delay times of players are substantially the same.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 27, 2017
    Applicant: NAVER Corporation
    Inventors: Sung Tak CHO, Sung Ho KIM, Joon Kee CHANG, Min Hee CHOI, Ki Su PARK, Kyoung Yun KANG, Young Min KIM, Dong Ock KIM, Eun Sun SHIN
  • Publication number: 20160269462
    Abstract: The present invention relates to an adaptive real-time transcoding method and a streaming server therefor to improve service quality by minimizing the disconnection of images in an environment, such as a mobile device, through adaptively changing a set value of a transcoding operation on a media streaming service to match a network environment. The adaptive real-time transcoding method of the present invention is a real-time transcoding method for sequentially transmitting a media data segment, divided and transcoded, in a streaming server to the client side over a network, the method comprising the steps of: determining the fill level of a client-side playback buffer; determining, on the basis of the fill level of the playback buffer, the image quality of media data segments that are not transmitted to the client side; and transcoding the non-transmitted media data segments according to the determined image quality.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 15, 2016
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI U NIVERSITY
    Inventors: Sung Ho KIM, Keun Baek PARK, Joon Kee CHANG, Sung Tak CHO, Won Woo RO, Doo Hwan OH, Keun Soo KIM, Young Jae CHO
  • Publication number: 20150288993
    Abstract: Methods and systems for providing multi-track video content includes, receiving a user request for multi-track video, the multi-track video including a plurality of videos, each of the plurality of videos corresponding to a track, each of the plurality of videos being divided into time-based video segments; requesting a first video of the plurality of videos, the first video corresponding to a first track of the multi-track video; receiving first video segments corresponding to the first video; sequentially transferring the first video segments to a player for displaying the sequentially transferred first video segments; receiving second video segments of a second video of the plurality of videos instead of receiving the first video segments, the second video segments corresponding to a second track of the multi-track video; and sequentially transferring the second video segments to the player for displaying the sequentially transferred second video segments.
    Type: Application
    Filed: December 12, 2014
    Publication date: October 8, 2015
    Inventors: Sung Tak CHO, Kyung-Ryul SUN, Sungho KIM, Yoosub SONG, Joon-Kee CHANG, Haneul LEE, Kukhwan SEO, Seongcheol JO, Seungahe YI
  • Publication number: 20150281771
    Abstract: In at least one example embodiment, a content reproducing apparatus includes a display, a memory configured to store at least one program and a processor. The processor is configured to reproduce first moving image content of a plurality of moving image content selected by a user, on a first region of a screen of the display, according to a user input, display a plurality of thumbnail images corresponding to the plurality of moving image content, on a second region of the screen, buffer a second moving image content corresponding to one of the plurality of thumbnail images, the first moving image content being continuously reproduced while the second moving image content is being buffered, and reproduce the second moving image content instead of the first moving image content when the buffering of the second moving image content is completed.
    Type: Application
    Filed: March 20, 2015
    Publication date: October 1, 2015
    Inventors: Sung Tak CHO, Kyung Ryul SUN, Sung Ho KIM, Yoo Sub SONG, Joon Kee CHANG, Haneul LEE, Kuk Hwan SEO, Seong Cheol JO, Seung Ahe YI
  • Patent number: 8885937
    Abstract: Provided is a composition-based exposure measuring method and apparatus for measuring an exposure degree of an object included in an image, including: receiving an input of the image; measuring an exposure amount of a pixel located in a region determined based on a composition, among pixels of the received image; and determining the exposure degree of the object based on the measured exposure amount.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 11, 2014
    Assignee: NHN Corporation
    Inventors: Jowon Yi, Sung Tak Cho, Joon-kee Chang, Rockyou Park, Young Dong Jung, Yeontae Kim