Patents by Inventor Jae Goon Aum

Jae Goon Aum 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 estimating delay spread of multi-path fading channel in OFDM system
    Patent number: 8121206
    Abstract: Provided is an apparatus for estimating a delay spread of a multi-path fading channel in an Orthogonal Frequency Division Multiplexing (OFDM) system. The apparatus is applied to an OFDM receiver including a channel equalization unit compensating channel distortion by estimating channel distortion at pilot locations with respect to output signals of an FFT unit.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: February 21, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Suk Lee, Se Bin Im, Je Hyuk Ryu, Jae Goon Aum, Jung Tae Kim, Hyung Jin Choi
  • Apparatus for detecting coordinates of an event within interest region, display device, security device and electronic blackboard including the same
    Publication number: 20110133882
    Abstract: There is provided an apparatus for detecting the coordinates of an event within an interest region including: a light source limiting an interest region; at least two light receiving units receiving reflected light of an event within the interest region; a reflector refracting the reflected light received in the light receiving units; and one image sensor on which the reflected light refracted on the reflector is image-formed, wherein the apparatus for detecting coordinates is configured of one module.
    Type: Application
    Filed: May 27, 2010
    Publication date: June 9, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Il Mo Jung, Yong Gyu Yoon, Jae Goon Aum, Won Jin Baek
  • SAMPLING FREQUENCY OFFSET ESTIMATION APPARATUS AND METHOD OF OFDM SYSTEM
    Publication number: 20100158144
    Abstract: A sampling frequency offset estimation apparatus of an orthogonal frequency division multiplexing (OFDM) system according to an aspect of the invention may include: a first differential operation unit performing complex conjugate multiplication of scattered pilots of complex symbols subjected to a fast Fourier transform (FFT) in an OFDM receiver; an interpolation unit repeating an operation of obtaining a median complex symbol between two consecutive symbols among complex symbols having first phase difference information from the first differential operation unit by a predetermined number; a second differential operation unit performing complex conjugate multiplication of two consecutive median complex symbols among median complex symbols from the interpolation unit; and a sampling frequency offset estimation unit estimating sampling frequency offset using complex symbols having second phase difference information from the second differential operation unit.
    Type: Application
    Filed: June 26, 2009
    Publication date: June 24, 2010
    Applicants: Samsung Electro-Mechanics Co., Ltd., SUNGKYUNKWAN UNIVERSITY Foundation for Corporate Collaboration
    Inventors: Jung Eun Youm, Hyung Jin Choi, Jung Soo Han, Kyung Hoon Won, Hyun Suk Lee, Jae Goon Aum
  • APPARATUS AND METHOD FOR ESTIMATING DELAY SPREAD OF MULTI-PATH FADING CHANNEL IN OFDM SYSTEM
    Publication number: 20090168908
    Abstract: Provided is an apparatus for estimating a delay spread of a multi-path fading channel in an Orthogonal Frequency Division Multiplexing (OFDM) system. The apparatus is applied to an OFDM receiver including a channel equalization unit compensating channel distortion by estimating channel distortion at pilot locations with respect to output signals of an FFT unit.
    Type: Application
    Filed: August 18, 2008
    Publication date: July 2, 2009
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Suk LEE, Se Bin Im, Je Hyuk Ryu, Jae Goon Aum, Jung Tae Kim, Hyung Jin Choi