Patents by Inventor Chang-Won NAM

Chang-Won NAM 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: 10721749
    Abstract: An electronic device is provided. The electronic device includes at least one antenna on a designated band, at least one filtering unit for filtering signals received from the at least one antenna into a plurality of bands of the designated band, at least one switching unit for outputting the signals filtered by the at least one filtering unit to a first communication unit using a first communication function and a second communication unit using a second communication function, and a processor electrically connected with the at least one switching unit, the first communication unit, and the second communication unit for controlling the at least one switching unit so that, when a signal of a first band in the designated band is output to the first communication unit, a signal of a second band in the designated band is output to the second communication unit.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: July 21, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Jin Park, Dae-Ho Kang, Hyun-Hee Kim, Chang-Won Nam, Min-Chull Paik, Hyung-Yeol Lee, Won-Joon Cho, Na-Young Hwang
  • Publication number: 20180152955
    Abstract: An electronic device is provided. The electronic device includes at least one antenna on a designated band, at least one filtering unit for filtering signals received from the at least one antenna into a plurality of bands of the designated band, at least one switching unit for outputting the signals filtered by the at least one filtering unit to a first communication unit using a first communication function and a second communication unit using a second communication function, and a processor electrically connected with the at least one switching unit, the first communication unit, and the second communication unit for controlling the at least one switching unit so that, when a signal of a first band in the designated band is output to the first communication unit, a signal of a second band in the designated band is output to the second communication unit.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 31, 2018
    Inventors: Sung-Jin PARK, Dae-Ho KANG, Hyun-Hee KIM, Chang-Won NAM, Min-Chull PAIK, Hyung-Yeol LEE, Won-Joon CHO, Na-Young HWANG
  • Publication number: 20160330099
    Abstract: A method of controlling a data rate by a transmitting device in a wireless communication system and the transmitting device are provided. The method includes detecting a condition to change a current data rate; performing a probing process based on a bandwidth and a Modulation and Coding Scheme (MCS); and controlling the data rate based on a result of the probing process. The transmitting device includes a controller configured to detect a condition to change a current data rate; and a transmitter and a receiver configured to perform a probing process based on a bandwidth and an MCS, wherein the controller is further configured to control a data rate based on a result of the probing process.
    Type: Application
    Filed: March 28, 2016
    Publication date: November 10, 2016
    Inventors: Ji-Hun KOO, Chang-Won Nam, Sae-Woong Bahk
  • Patent number: 9326170
    Abstract: A method of operating a wireless local area network (WLAN) system is provided. The WLAN includes an access point supporting uplink multiple user multiple input multiple output mode. The method of operating the WLAN system includes selecting a first station, receiving channel information from the selected first station by a second station, calculating a SNR reduction value based on the channel information by the second station, and selecting the second station based on the SNR reduction value.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 26, 2016
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Ji-Hun Koo, Chang-Won Nam, Sae-Woong Bahk
  • Publication number: 20150023187
    Abstract: A method of operating a wireless local area network (WLAN) system is provided. The WLAN includes an access point supporting uplink multiple user multiple input multiple output mode. The method of operating the WLAN system includes selecting a first station, receiving channel information from the selected first station by a second station, calculating a SNR reduction value based on the channel information by the second station, and selecting the second station based on the SNR reduction value.
    Type: Application
    Filed: November 8, 2013
    Publication date: January 22, 2015
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Hun Koo, Chang-Won Nam, Sae-Woong Bahk
  • Publication number: 20130121160
    Abstract: A wireless device in a first piconet using a first time-frequency code senses interference from a second piconet using a second time-frequency code that is different from the first time-frequency code. The wireless device detects a beacon period of the second piconet. The wireless device reserves at least one medium access slot corresponding to the beacon period of the second piconet among a plurality of medium access slots of the first piconet.
    Type: Application
    Filed: May 11, 2012
    Publication date: May 16, 2013
    Inventors: Jin-Yong CHUNG, Hyuk-Chin CHANG, Chang-Won NAM