Patents by Inventor Ho-sang Sung

Ho-sang Sung 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 and apparatus for concealing frame error and method and apparatus for audio decoding
    Patent number: 9558750
    Abstract: Disclosed is a frame error concealment (FEC) method. The method includes: selecting an FEC mode based on states of a current frame and a previous frame of the current frame in a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: January 31, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Nam-suk Lee
  • Frame error concealment method and apparatus, and audio decoding method and apparatus
    Patent number: 9520136
    Abstract: Disclosed are a frame error concealment method and apparatus and an audio decoding method and apparatus. The frame error concealment (FEC) method includes: selecting an FEC mode based on at least one of a state of at least one frame and a phase matching flag, with regard to a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: December 13, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Nam-suk Lee
  • FRAME ERROR CONCEALMENT METHOD AND APPARATUS AND DECODING METHOD AND APPARATUS USING THE SAME
    Publication number: 20160358612
    Abstract: A frame error concealment method and apparatus and a decoding method and apparatus using the same. The frame error concealment method includes setting a concealment method to conceal an error based on one or more signal characteristics of an error frame having the error and concealing the error using the set concealment method.
    Type: Application
    Filed: August 18, 2016
    Publication date: December 8, 2016
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho-sang SUNG, Kang-eun LEE, Jung-Hoe KIM, Eun-mi OH
  • WEIGHT FUNCTION DETERMINATION DEVICE AND METHOD FOR QUANTIZING LINEAR PREDICTION CODING COEFFICIENT
    Publication number: 20160336018
    Abstract: A weighting function determination method includes obtaining a line spectral frequency (LSF) coefficient or an immitance spectral frequency (ISF) coefficient from a linear predictive coding (LPC) coefficient of an input signal and determining a weighting function by combining a first weighting function based on spectral analysis information and a second weighting function based on position information of the LSF coefficient or the ISF coefficient.
    Type: Application
    Filed: January 15, 2015
    Publication date: November 17, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Eun-mi OH
  • Frame error concealment method and apparatus and error concealment scheme construction method and apparatus
    Patent number: 9478220
    Abstract: Provided are a frame error concealment method and apparatus and an error concealment scheme construction method and apparatus. The frame error concealment method includes generating a new signal by synthesizing a plurality of previous signals that are similar to a signal of an error frame and reconstructing the signal of the error frame using the generated signal.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: October 25, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Ki-hyun Choo, Jung-hoe Kim, Eun-mi Oh, Chang-yong Son, Kang-eun Lee
  • Method for encoding and decoding an audio signal and apparatus for same
    Patent number: 9466308
    Abstract: A method for coding and decoding an audio signal or speech signal and an apparatus adopting the method are provided.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki Hyun Choo, Jung-Hoe Kim, Eun Mi Oh, Ho Sang Sung
  • BROADBAND SIGNAL GENERATING METHOD AND APPARATUS, AND DEVICE EMPLOYING SAME
    Publication number: 20160275959
    Abstract: A method of generating a wideband signal may include estimating a high-band spectrum parameter from a reconstructed narrowband signal based on a combination of at least two mapping schemes; estimating a high-band excitation signal based on the reconstructed narrowband signal; generating a high-band signal based on the estimated high-band spectrum parameter and the estimated high-band excitation signal; and generating a wideband signal by synthesizing the reconstructed narrowband signal with the high-band signal.
    Type: Application
    Filed: November 3, 2014
    Publication date: September 22, 2016
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Ki-hyun CHOO, Sang-won KANG, Ho-sang SUNG, Eun-mi OH, Jong-geun JEON, Yaxing LI
  • METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO/SPEECH SIGNAL
    Publication number: 20160254005
    Abstract: A method and apparatus to encode and decode an audio/speech signal is provided. An inputted audio signal or speech signal may be transformed into at least one of a high frequency resolution signal and a high temporal resolution signal. The signal may be encoded by determining an appropriate resolution, the encoded signal may be decoded, and thus the audio signal, the speech signal, and a mixed signal of the audio signal and the speech signal may be processed.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun Mi OH, Jung Hoe KIM, Ki-hyun CHOO, Ho Sang SUNG, Mi Young KIM
  • Frame error concealment method and apparatus and decoding method and apparatus using the same
    Patent number: 9424851
    Abstract: A frame error concealment method and apparatus and a decoding method and apparatus using the same. The frame error concealment method includes setting a concealment method to conceal an error based on one or more signal characteristics of an error frame having the error and concealing the error using the set concealment method.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: August 23, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Kang-eun Lee, Jung-hoe Kim, Eun-mi Oh
  • Method and apparatus for encoding and decoding audio/speech signal
    Patent number: 9418666
    Abstract: Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: August 16, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-yong Son, Eun-mi Oh, Jung-hoe Kim, Ho-sang Sung, Kang-eun Lee, Ki-hyun Choo
  • SIGNAL ENCODING METHOD AND DEVICE AND SIGNAL DECODING METHOD AND DEVICE
    Publication number: 20160225379
    Abstract: A spectrum encoding method includes selecting an important spectral component in band units for a normalized spectrum and encoding information of the selected important spectral component for a band, based on a number, a position, a magnitude and a sign thereof. A spectrum decoding method includes obtaining from a bitstream, information about an important spectral component for a band of an encoded spectrum and decoding the obtained information of the important spectral component, based on a number, a position, a magnitude and a sign of the important spectral component.
    Type: Application
    Filed: September 16, 2014
    Publication date: August 4, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ho-sang SUNG
  • APPARATUS AND METHOD FOR DETERMINING WEIGHTING FUNCTION HAVING FOR ASSOCIATING LINEAR PREDICTIVE CODING (LPC) COEFFICIENTS WITH LINE SPECTRAL FREQUENCY COEFFICIENTS AND IMMITTANCE SPECTRAL FREQUENCY COEFFICIENTS
    Publication number: 20160225380
    Abstract: Proposed is a method and apparatus for determining a weighting function for quantizing a linear predictive coding (LPC) coefficient and having a low complexity. The weighting function determination apparatus may convert an LPC coefficient of a mid-subframe of an input signal to one of a immittance spectral frequency (ISF) coefficient and a line spectral frequency (LSF) coefficient, and may determine a weighting function associated with an importance of the ISF coefficient or the LSF coefficient based on the converted ISF coefficient or LSF coefficient.
    Type: Application
    Filed: April 11, 2016
    Publication date: August 4, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sang SUNG, Eun Mi OH
  • FRAME ERROR CONCEALMENT METHOD AND APPARATUS, AND AUDIO DECODING METHOD AND APPARATUS
    Publication number: 20160189719
    Abstract: Disclosed are a frame error concealment method and apparatus and an audio decoding method and apparatus. The frame error concealment (FEC) method includes: selecting an FEC mode based on at least one of a state of at least one frame and a phase matching flag, with regard to a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.
    Type: Application
    Filed: March 4, 2016
    Publication date: June 30, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Nam-suk LEE
  • APPARATUS AND METHOD FOR ENCODING AND DECODING MULTI-CHANNEL AUDIO SIGNAL
    Publication number: 20160180855
    Abstract: Disclosed is an apparatus for encoding and decoding a multi-channel audio signal. The apparatus for encoding the multi-channel audio signal groups channels of a multi-channel audio signal, eliminates redundant information between channels using a mixing matrix including phase information, converts a frequency of the signal, and encodes the signal.
    Type: Application
    Filed: February 29, 2016
    Publication date: June 23, 2016
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Mi Young KIM, Jung Hoe KIM, Ho Sang SUNG, Ki Hyun CHOO, Eun Mi OH
  • Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same
    Patent number: 9373331
    Abstract: An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: June 21, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-mi Oh, Ki-hyun Choo, Ho-sang Sung, Chang-yong Son, Jung-hoe Kim, Kang eun Lee
  • Method and apparatus to encode and decode an audio/speech signal
    Patent number: 9355646
    Abstract: A method and apparatus to encode and decode an audio/speech signal is provided. An inputted audio signal or speech signal may be transformed into at least one of a high frequency resolution signal and a high temporal resolution signal. The signal may be encoded by determining an appropriate resolution, the encoded signal may be decoded, and thus the audio signal, the speech signal, and a mixed signal of the audio signal and the speech signal may be processed.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: May 31, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun Mi Oh, Jung Hoe Kim, Ki-Hyun Choo, Ho Sang Sung, Mi Young Kim
  • APPARATUS AND METHOD DETERMINING WEIGHTING FUNCTION FOR LINEAR PREDICTION CODING COEFFICIENTS QUANTIZATION
    Publication number: 20160111106
    Abstract: An apparatus determining a weighting function for line prediction coding coefficients quantization converts a linear prediction coding (LPC) coefficient of an input signal into one of a line spectral frequency (LSF) coefficient and an immitance spectral frequency (ISF) coefficient and determines a weighting function associated with one of an importance of the ISF coefficient and importance of the LSF coefficient using one of the converted ISF coefficient and the converted LSF coefficient.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 21, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sang SUNG, Eun Mi OH
  • Apparatus and method for determining weighting function having for associating linear predictive coding (LPC) coefficients with line spectral frequency coefficients and immittance spectral frequency coefficients
    Patent number: 9311926
    Abstract: Proposed is a method and apparatus for determining a weighting function for quantizing a linear predictive coding (LPC) coefficient and having a low complexity. The weighting function determination apparatus may convert an LPC coefficient of a mid-subframe of an input signal to one of a immitance spectral frequency (ISF) coefficient and a line spectral frequency (LSF) coefficient, and may determine a weighting function associated with an importance of the ISF coefficient or the LSF coefficient based on the converted ISF coefficient or LSF coefficient.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sang Sung, Eun Mi Oh
  • Apparatus and method for encoding and decoding multi-channel audio signal
    Patent number: 9305556
    Abstract: Disclosed is an apparatus for encoding and decoding a multi-channel audio signal. The apparatus for encoding the multi-channel audio signal groups channels of a multi-channel audio signal, eliminates redundant information between channels using a mixing matrix including phase information, converts a frequency of the signal, and encodes the signal.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: April 5, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Mi Young Kim, Jung Hoe Kim, Ho Sang Sung, Ki Hyun Choo, Eun Mi Oh
  • Frame error concealment method and apparatus, and audio decoding method and apparatus
    Patent number: 9280975
    Abstract: Disclosed are a frame error concealment method and apparatus and an audio decoding method and apparatus. The frame error concealment (FEC) method includes: selecting an FEC mode based on at least one of a state of at least one frame and a phase matching flag, with regard to a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Nam-suk Lee