Patents by Inventor Hong-Sun Park

Hong-Sun Park 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).

  • CHARGE EQUALIZATION APPARATUS
    Publication number: 20090237030
    Abstract: The present invention relates to a charge equalization apparatus, which allows the primary and secondary windings of a transformer to be easily fabricated, can control the flow of charge to batteries depending on the charged states of series-connected batteries, and can prevent overcurrent from flowing into a battery currently being charged.
    Type: Application
    Filed: June 13, 2007
    Publication date: September 24, 2009
    Applicants: SK Energy Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jeon Keun Oh, Joong Hui Lee, Soo Yeup Jang, Gun Woo Moon, Chong Eun Kim, Hong Sun Park
  • Pilot designing method in an uplink OFDMA system
    Publication number: 20050243939
    Abstract: A pilot designing method in an uplink OFDMA system is provided. In the uplink OFDMA system, communications are carried out in a frame divided into time-frequency lattices, and each time-frequency lattice includes a plurality of data symbol periods and a plurality of pilot symbol periods intermittently arranged with respect to the data symbol periods. The frame is divided into a plurality of blocks. The blocks are allocated to the terminals. A predetermined allocated pilot time-frequency lattice is shared between adjacent terminals.
    Type: Application
    Filed: March 11, 2005
    Publication date: November 3, 2005
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (KAIST)
    Inventors: Young-Ho Jung, Jae-Hak Chung, Chan-Soo Hwang, Seung-Hoon Nam, Yong-Hoon Lee, Hong-Sun Park