Patents by Inventor Jun-Chae Na

Jun-Chae Na 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).

  • Apparatus and method for generating unique ID of RF card
    Patent number: 9286406
    Abstract: A unique ID generation apparatus that may generate a unique ID of a radio frequency (RE) card includes a card recognition unit that recognizes an RF card; a command transmission unit that transmits, to the recognized RF card, a plurality of commands which respectively correspond to a plurality of RF protocols; a response reception unit that receives, from the RF card, responses to one or more of the plurality of commands; and a unique ID generation unit that generates a unique ID of the RF card based on the received responses.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 15, 2016
    Assignee: TOUCH WORKS INC.
    Inventors: Seung Hun Kang, Hyung Soon Park, Sung Hwan Roh, Jun Chae Na
  • APPARATUS AND METHOD FOR GENERATING UNIQUE ID OF RF CARD
    Publication number: 20150324475
    Abstract: A unique ID generation apparatus that may generate a unique ID of a radio frequency (RE) card includes a card recognition unit that recognizes an RF card; a command transmission unit that transmits, to the recognized RF card, a plurality of commands which respectively correspond to a plurality of RF protocols; a response reception unit that receives, from the RF card, responses to one or more of the plurality of commands; and a unique ID generation unit that generates a unique ID of the RF card based on the received responses.
    Type: Application
    Filed: August 26, 2013
    Publication date: November 12, 2015
    Inventors: Seung Hun KANG, Hyung Soon PARK, Sung Hwan ROH, Jun Chae NA
  • IC card, terminal with IC card and initializing method thereof
    Patent number: 8239596
    Abstract: An IC card and a terminal mounted with an IC card are disclosed.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: August 7, 2012
    Assignee: KT Corporation
    Inventors: Kyoung-Tae Kim, Min-Jeong Kim, Jun-Chae Na
  • IC CARD, TERMINAL WITH IC CARD AND INITIALIZING METHOD THEREOF
    Publication number: 20080320187
    Abstract: An IC card and a terminal mounted with an IC card are disclosed.
    Type: Application
    Filed: August 12, 2008
    Publication date: December 25, 2008
    Applicant: KTFreetel Co.,Ltd.
    Inventors: Kyoung-Tae KIM, Min-Jeong Kim, Jun-Chae Na
  • AMC (adaptive modulation and coding) method and apparatus for increasing up-link performance and record medium storing the method
    Publication number: 20060119494
    Abstract: An adaptive modulation and coding (AMC) method and apparatus for increasing up-link performance and a record medium storing the method are disclosed. In one embodiment, the method comprises: (a) receiving a signal from the base station, which stores an identical mapping table to that stored in the terminal, wherein the mapping table lists i) adaptive modulating and coding methods corresponding to plural signal-to-noise ratios (SNRs), and ii) mapping identifiers corresponding to the adaptive modulating and coding methods, (b) measuring a SNR for the received signal, (c) extracting a mapping identifier corresponding to the SNR, and (d) transmitting the mapping identifier to the base station so that the base station can demodulate and decode data received from the terminal by referring to the transmitted mapping identifier and the stored mapping table.
    Type: Application
    Filed: January 10, 2006
    Publication date: June 8, 2006
    Inventors: Jun-Chae Na, Won-Hak Jang, Kyung-Tae Kim