Patents by Inventor Jae-Jun Ban

Jae-Jun Ban 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: 11343872
    Abstract: A method and an apparatus for filtering a wireless signal by parsing a wireless signal transmitted from a surrounding wireless terminal so as to extract channel information of the surrounding wireless terminal in a MAC frame and performing adaptive filtering on the wireless signal.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: May 24, 2022
    Assignee: Dialog Semiconductor Korea Inc.
    Inventors: Jae Jun Ban, Jae Wan Kim, Won Man Kim, Beom Jin Kim
  • Publication number: 20200154514
    Abstract: A method and an apparatus for filtering a wireless signal by parsing a wireless signal transmitted from a surrounding wireless terminal so as to extract channel information of the surrounding wireless terminal in a MAC frame and performing adaptive filtering on the wireless signal.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Applicant: FCI Inc.
    Inventors: Jae Jun BAN, Jae Wan KIM, Won Man KIM, Beom Jin KIM
  • Publication number: 20150209390
    Abstract: The present disclosure provides adipose cell extracts and its use. The composition comprising the present extracts and method can be used advantageously for a stem cell-based, noninvasive therapy for treating neurologic disease such as stroke and HD. Also, in contrast to the stem cell transplantation, the present method or composition enables the repeated treatments, due to the convenient administration, thus leading to a more efficient prevention and/or curing of the disease of interest.
    Type: Application
    Filed: January 23, 2015
    Publication date: July 30, 2015
    Applicant: SNU R&DB FOUNDATION
    Inventors: Kon CHU, Jae-Kyu ROH, Manho KIM, Sang Kun LEE, Keun-Hwa JUNG, Soon-Tae LEE, Daejong JEON, Wooseok IM, Jae-Jun BAN
  • Patent number: 8879673
    Abstract: The present invention provides a method for coarse frequency synchronization in an OFDM receiver. Even if the maximum variation of crystal oscillator (X-TAL) frequency disturbance is maximized and most of the variation in crystal oscillator (X-TAL) frequency disturbance is vary small, the estimation or search method of the present invention is capable of rapidly and effectively terminating the estimation of the integral multiple frequency offset (IFO). The integral multiple frequency offset (IFO) candidate is ascendingly increased and descendingly reduced at one value interval. In the estimation IFO, the correlation peak value in the intermediate status is compared to the thresholds, the coarse frequency synchronization (CFS) acquisition directly is ended and ensured when the correlation peak value is greater than the threshold, and a confidence check is not performed when correlation peak value is less than the threshold for considerably reducing the acquisition time of the CFS.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: November 4, 2014
    Assignee: FCI Inc.
    Inventors: Jae-Jun Ban, Byeongmoo Moon
  • Patent number: 8824271
    Abstract: The present invention relates to an orthogonal frequency-division multiplexing receiver, and more particular to an orthogonal frequency-division multiplexing receiver including an FFT/IFFT operating core and a scheduler. In order to simultaneously share the FFT/IFFT operating core, the scheduler manages input/output timings of FFT/IFFT operations and control signals. The FFT/IFFT operating core supports decimation-in-time (DIT) and decimation-in-frequency (DIF) FFT/IFFT operations at the same time.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 2, 2014
    Assignee: FCI Inc.
    Inventors: Young-Il Chun, Chang-Ik Hwang, Jae-Jun Ban
  • Patent number: 8824528
    Abstract: The present invention relates to a spectrum inversion detection apparatus which includes a differential correlation value computing portion, utilized to use a present and previous time axial symbols to compute differential correlation values individually corresponding to carriers; and a controlling portion, utilized to use the differential correlation values, when a spectrum inversion status flag is not at a spectrum inversion state, to compute a correlativity value of the each integer frequency displacement thereby, and when spectrum inversion status flag is at the spectrum inversion state, to determine a maximal correlativity value among all the computed correlativity values, and to decide a spectrum inversion status flag of the computed correlativity value which is determined as the maximal correlativity value thereby utilizing as a detection result signal to output.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: September 2, 2014
    Assignee: FCI Inc.
    Inventors: Jae-Jun Ban, Beomjin Kim
  • Publication number: 20130329770
    Abstract: The present invention relates to a spectrum inversion detection apparatus which includes a differential correlation value computing portion, utilized to use a present and previous time axial symbols to compute differential correlation values individually corresponding to carriers; and a controlling portion, utilized to use the differential correlation values, when a spectrum inversion status flag is not at a spectrum inversion state, to compute a correlativity value of the each integer frequency displacement thereby, and when spectrum inversion status flag is at the spectrum inversion state, to determine a maximal correlativity value among all the computed correlativity values, and to decide a spectrum inversion status flag of the computed correlativity value which is determined as the maximal correlativity value thereby utilizing as a detection result signal to output.
    Type: Application
    Filed: June 11, 2013
    Publication date: December 12, 2013
    Inventors: Jae-Jun Ban, Beomjin Kim
  • Publication number: 20130230129
    Abstract: The present invention provides a method for coarse frequency synchronization in an OFDM receiver. Even if the maximum variation of crystal oscillator (X-TAL) frequency disturbance is maximized and most of the variation in crystal oscillator (X-TAL) frequency disturbance is vary small, the estimation or search method of the present invention is capable of rapidly and effectively terminating the estimation of the integral multiple frequency offset (IFO). The integral multiple frequency offset (IFO) candidate is ascendingly increased and descendingly reduced at one value interval. In the estimation IFO, the correlation peak value in the intermediate status is compared to the thresholds, the coarse frequency synchronization (CFS) acquisition directly is ended and ensured when the correlation peak value is greater than the threshold, and a confidence check is not performed when correlation peak value is less than the threshold for considerably reducing the acquisition time of the CFS.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 5, 2013
    Applicant: FCI INC.
    Inventors: JAE-JUN BAN, Byeongmoo Moon
  • Patent number: 8520779
    Abstract: A method and an apparatus for audio noise reduction of frequency modulation (FM) receiver are described. After receiving FM signal having pilot tone, pilot carrier sync detector performs pilot carrier synchronization detection of FM signal, FM demodulator demodulates synchronized FM signal, multiplex decoder decodes audio signal of demodulated FM signal for outputting the decoded audio signal, and noise reduction controls multiplex decoder for controlling noise attenuation associated with the decoded audio signal according to RSSI, the method comprising the steps: (a) performing phase error detection for detecting phase error of phase-locked loop (PLL) of pilot carrier sync detector; (b) determining whether noise exists by comparing the phase error with threshold value to determine whether noise exists in the phase error; and (c) performing noise reduction step by outputting noise reduction control signal to noise reduction based on determination in step (b) for reducing noise in the noise existence interval.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: August 27, 2013
    Assignee: FCI Inc.
    Inventor: Jae-jun Ban
  • Publication number: 20130107695
    Abstract: The present invention relates to an orthogonal frequency-division multiplexing receiver, and more particular to an orthogonal frequency-division multiplexing receiver including an FFT/IFFT operating core and a scheduler. In order to simultaneously share the FFT/IFFT operating core, the scheduler manages input/output timings of FFT/IFFT operations and control signals. The FFT/IFFT operating core supports decimation-in-time (DIT) and decimation-in-frequency (DIF) FFT/IFFT operations at the same time.
    Type: Application
    Filed: September 14, 2012
    Publication date: May 2, 2013
    Applicant: FCI INC.
    Inventors: YOUNG-IL CHUN, CHANG-IK HWANG, JAE-JUN BAN
  • Publication number: 20120033764
    Abstract: A method and an apparatus for audio noise reduction of frequency modulation (FM) receiver are described. After receiving FM signal having pilot tone, pilot carrier sync detector performs pilot carrier synchronization detection of FM signal, FM demodulator demodulates synchronized FM signal, multiplex decoder decodes audio signal of demodulated FM signal for outputting the decoded audio signal, and noise reduction controls multiplex decoder for controlling noise attenuation associated with the decoded audio signal according to RSSI, the method comprising the steps: (a) performing phase error detection for detecting phase error of phase-locked loop (PLL) of pilot carrier sync detector; (b) determining whether noise exists by comparing the phase error with threshold value to determine whether noise exists in the phase error; and (c) performing noise reduction step by outputting noise reduction control signal to noise reduction based on determination in step (b) for reducing noise in the noise existence interval.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 9, 2012
    Applicant: FCI INC.
    Inventor: Jae-Jun Ban