Patents by Inventor Sang Ki Choi

Sang Ki Choi 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: 11939698
    Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: March 26, 2024
    Assignee: SENIC INC.
    Inventors: Jong Hwi Park, Jung-Gyu Kim, Eun Su Yang, Byung Kyu Jang, Jung Woo Choi, Yeon Sik Lee, Sang Ki Ko, Kap-Ryeol Ku
  • Publication number: 20240098302
    Abstract: Disclosed are a method for inducing a prediction motion vector and an apparatus using the same. An image decoding method can include: a step of determining the information related to a plurality of spatial candidate prediction motion vectors from peripheral predicted blocks of a predicted target block; and a step of determining the information related to temporal candidate prediction motion vectors on the basis of the information related to the plurality of spatial candidate prediction motion vectors. Accordingly, the present invention can reduce complexity and can enhance coding efficiency when inducing the optimum prediction motion vector.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 21, 2024
    Applicants: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University
    Inventors: Sung Chang LIM, Hui Yong KIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM, Jae Gon KIM, Sang Yong LEE, Un Ki PARK
  • Publication number: 20240076799
    Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.
    Type: Application
    Filed: November 1, 2023
    Publication date: March 7, 2024
    Applicant: SENIC INC.
    Inventors: Jong Hwi PARK, Jung-Gyu KIM, Eun Su YANG, Byung Kyu JANG, Jung Woo CHOI, Yeon Sik LEE, Sang Ki KO, Kap-Ryeol KU
  • Publication number: 20080168155
    Abstract: The present invention relates to a system and method for a web hard disk server to download broadcast contents from a broadcast content providing server and to store a minimum number of broadcast contents in order to avoid redundancy among downloaded broadcast contents. More specifically, among several individual broadcast contents downloaded or to be downloaded to a web hard disk of the web hard disk server, only one instance of identical broadcast contents is physically stored in a shared manner, so that the capacity of the web hard disk can be efficiently used while users perceive that they use the web hard disk individually.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Inventor: Sang Ki Choi
  • Publication number: 20080168522
    Abstract: The present invention relates to a system and method for receiving and transmitting publically available broadcast programs to a registered external Internet protocol (IP) address. The received broadcast programs are digitally encoded and stored before transmission. More specifically, a broadcast communication converter system includes a broadcast source for creating predetermined broadcast programs in order to provide the created broadcast programs through a public broadcast network, and a broadcast communication converter for receiving the broadcast programs, digitally encoding the broadcast programs to create broadcast communication contents, storing the created broadcast communication contents into a predetermined recording medium, and transmitting the broadcast communication contents to an external broadcast communication contents target through a wired/wireless communication network.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Inventor: Sang Ki Choi