Patents by Inventor Youn Woo Yun

Youn Woo Yun 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).

  • Method of keying for broadcast using OFDM
    Patent number: 8165227
    Abstract: A method of modulation, which is applied to a communication system transmitting data in one frequency band using at least two orthogonal subcarriers, is disclosed. The present invention includes the steps of adding information bits indicating an amplitude reference and a phase reference to an input bit sequence by a specific time interval unit and carrying out differential amplitude phase shift keying (DAPSK) on the input bit sequence using the amplitude and phase references. The present invention prevents the waste of power and bandwidth due to insertion of a plurality of pilot toes in the related art 1?-QAM system.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: April 24, 2012
    Assignee: LG Electronics Inc.
    Inventors: Youn Woo Yun, Ki Jun Kim
  • Method of Keying for Broadcast Using Ofdm
    Publication number: 20090003465
    Abstract: A method of modulation, which is applied to a communication system transmitting data in one frequency band using at least two orthogonal subcarriers, is disclosed. The present invention includes the steps of adding information bits indicating an amplitude reference and a phase reference to an input bit sequence by a specific time interval unit and carrying out differential amplitude phase shift keying (DAPSK) on the input bit sequence using the amplitude and phase references. The present invention prevents the waste of power and bandwidth due to insertion of a plurality of pilot toes in the related art 1?-QAM system.
    Type: Application
    Filed: October 25, 2005
    Publication date: January 1, 2009
    Applicant: LG ELECTRONICS INC.
    Inventors: Youn Woo Yun, Ki Jun Kim