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).

  • Playout delay adjustment method and electronic apparatus thereof
    Patent number: 10135707
    Abstract: An electronic apparatus and a playout delay adjustment method thereof are provided. The electronic apparatus includes a target playout delay estimator configured to estimate an initial target playout delay of a current frame by using network status information of a played packet and estimate a final target playout delay of the current frame by updating the estimated initial target playout delay based on real delay information of an unplayed packet, and an adaptation controller configured to determine an adaptation method for adjusting a playout delay of the current frame based on the final target playout delay.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: November 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Anton Porov, Konstantin Osipov, Eun-mi Oh, Cheol-hoon Baek, Nam-il Lee
  • Frame error concealment method and apparatus and decoding method and apparatus using the same
    Patent number: 10096323
    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: August 18, 2016
    Date of Patent: October 9, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Kang-eun Lee, Jung-hoe Kim, Eun-mi Oh
  • Method and apparatus for concealing frame error and method and apparatus for audio decoding
    Patent number: 10096324
    Abstract: A frame error concealment (FEC) method is provided. 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: January 30, 2017
    Date of Patent: October 9, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Nam-suk Lee
  • Weight function determination device and method for quantizing linear prediction coding coefficient
    Patent number: 10074375
    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: Grant
    Filed: January 15, 2015
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Eun-mi Oh
  • METHOD AND DEVICE FOR REGULATING PLAYING DELAY AND METHOD AND DEVICE FOR MODIFYING TIME SCALE
    Publication number: 20180248810
    Abstract: A playout delay adjustment method includes: adjusting a playout delay surplus based on a difference value between a first playout delay obtained in a first scheme and a second playout delay obtained in a second scheme and determining an adaptation type of a current frame according to whether a previous frame is an active frame; and when the determined adaptation type is signal-based adaptation, performing time scale modification (TSM) according to an adaptation scheme determined according to a comparison result between the first playout delay and the second playout delay and a comparison result between a target delay and the first playout delay.
    Type: Application
    Filed: September 5, 2016
    Publication date: August 30, 2018
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Ho-sang SUNG, Sang-won KANG, Jong-hyun KIM, Eun-mi OH, Yaxing LI, Kyung-hun JUNG
  • METHOD AND APPARATUS FOR ENCODING/DECODING SPEECH SIGNAL USING CODING MODE
    Publication number: 20180166087
    Abstract: An apparatus and a method to encode and decode a speech signal using an encoding mode are provided. An encoding apparatus may select an encoding mode of a frame included in an input speech signal, and encode a frame having an unvoiced mode for an unvoiced speech as the selected encoding mode.
    Type: Application
    Filed: February 8, 2018
    Publication date: June 14, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho Sang SUNG, Ki Hyun CHOO, Jung Hoe KIM, Eun Mi OH
  • FRAME ERROR CONCEALMENT METHOD AND APPARATUS AND ERROR CONCEALMENT SCHEME CONSTRUCTION METHOD AND APPARATUS
    Publication number: 20180122386
    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: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Ki-hyun CHOO, Jung-hoe KIM, Eun-mi OH, Chang-yong SON, Kang-eun LEE
  • FRAME ERROR CONCEALMENT METHOD AND APPARATUS, AND AUDIO DECODING METHOD AND APPARATUS
    Publication number: 20180114532
    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: December 11, 2017
    Publication date: April 26, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Nam-suk LEE
  • APPARATUS AND METHOD FOR ENCODING AND DECODING SIGNAL FOR HIGH FREQUENCY BANDWIDTH EXTENSION
    Publication number: 20180102132
    Abstract: An apparatus and method for encoding and decoding a signal for high frequency bandwidth extension are provided. An encoding apparatus may down-sample a time domain input signal, may core-encode the down-sampled time domain input signal, may transform the core-encoded time domain input signal to a frequency domain input signal, and may perform bandwidth extension encoding using a basic signal of the frequency domain input signal.
    Type: Application
    Filed: December 4, 2017
    Publication date: April 12, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki Hyun Choo, Eun Mi Oh, Ho Sang Sung
  • Method and apparatus for encoding/decoding speech signal using coding mode
    Patent number: 9928843
    Abstract: An apparatus and a method to encode and decode a speech signal using an encoding mode are provided. An encoding apparatus may select an encoding mode of a frame included in an input speech signal, and encode a frame having an unvoiced mode for an unvoiced speech as the selected encoding mode.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sang Sung, Ki Hyun Choo, Jung Hoe Kim, Eun Mi Oh
  • METHOD AND APPARATUS FOR DETERMINING CODING MODE
    Publication number: 20180075857
    Abstract: Provided is a method and apparatus for determining a signal coding mode. The signal coding mode may be determined or changed according to whether a current frame corresponds to a silence period and by using a history of speech or music presence possibilities.
    Type: Application
    Filed: November 27, 2017
    Publication date: March 15, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Jie Zhan, Ki-hyun Choo
  • APPARATUS, MEDIUM AND METHOD TO ENCODE AND DECODE HIGH FREQUENCY SIGNAL
    Publication number: 20180068674
    Abstract: A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.
    Type: Application
    Filed: November 13, 2017
    Publication date: March 8, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-hyun CHOO, Eun-mi OH, Ho-sang SUNG, Jung-hoe KIM, Mi-young KIM
  • Frame error concealment method and apparatus and error concealment scheme construction method and apparatus
    Patent number: 9858933
    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: October 24, 2016
    Date of Patent: January 2, 2018
    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 and apparatus for determining coding mode
    Patent number: 9847090
    Abstract: Provided is a method and apparatus for determining a signal coding mode. The signal coding mode may be determined or changed according to whether a current frame corresponds to a silence period and by using a history of speech or music presence possibilities.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: December 19, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Jie Zhan, Ki-hyun Choo
  • APPARATUS AND METHOD DETERMINING WEIGHTING FUNCTION FOR LINEAR PREDICTION CODING COEFFICIENTS QUANTIZATION
    Publication number: 20170358310
    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: August 28, 2017
    Publication date: December 14, 2017
    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
    Publication number: 20170358309
    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: August 28, 2017
    Publication date: December 14, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sang SUNG, Eun Mi OH
  • Frame error concealment method and apparatus, and audio decoding method and apparatus
    Patent number: 9842595
    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: December 12, 2016
    Date of Patent: December 12, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Nam-suk Lee
  • Apparatus and method for encoding and decoding signal for high frequency bandwidth extension
    Patent number: 9837090
    Abstract: An apparatus and method for encoding and decoding a signal for high frequency bandwidth extension are provided. An encoding apparatus may down-sample a time domain input signal, may core-encode the down-sampled time domain input signal, may transform the core-encoded time domain input signal to a frequency domain input signal, and may perform bandwidth extension encoding using a basic signal of the frequency domain input signal.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: December 5, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki Hyun Choo, Eun Mi Oh, Ho Sang Sung
  • Apparatus, medium and method to encode and decode high frequency signal
    Patent number: 9818429
    Abstract: A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-hyun Choo, Eun-mi Oh, Ho-sang Sung, Jung-Hoe Kim, Mi-young Kim
  • METHOD AND APPARATUS FOR DETERMINING CODING MODE
    Publication number: 20170287497
    Abstract: Provided is a method and apparatus for determining a signal coding mode. The signal coding mode may be determined or changed according to whether a current frame corresponds to a silence period and by using a history of speech or music presence possibilities.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 5, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Jie ZHAN, Ki-hyun CHOO