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).

  • APPARATUS AND METHOD FOR ENCODING AND DECODING SIGNAL FOR HIGH FREQUENCY BANDWIDTH EXTENSION
    Publication number: 20160064013
    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: November 6, 2015
    Publication date: March 3, 2016
    Applicant: 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
    Publication number: 20160035368
    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: October 9, 2015
    Publication date: February 4, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-hyun CHOO, Eun-mi OH, Ho-sang SUNG, Jung-Hoe KIM, Mi-young KIM
  • Apparatus and method determining weighting function for linear prediction coding coefficients quantization
    Patent number: 9236059
    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: Grant
    Filed: May 26, 2011
    Date of Patent: January 12, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sang Sung, Eun Mi Oh
  • Apparatus and method for encoding and decoding signal for high frequency bandwidth extension
    Patent number: 9183847
    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: September 12, 2011
    Date of Patent: November 10, 2015
    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: 9177569
    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: November 26, 2012
    Date of Patent: November 3, 2015
    Assignee: 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
    Publication number: 20150279380
    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: June 15, 2015
    Publication date: October 1, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Ki-hyun CHOO, Jung-hoe KIM, Eun-mi OH, Chang-yong SON, Kang-eun LEE
  • METHOD OF QUANTIZING LINEAR PREDICTIVE CODING COEFFICIENTS, SOUND ENCODING METHOD, METHOD OF DE-QUANTIZING LINEAR PREDICTIVE CODING COEFFICIENTS, SOUND DECODING METHOD, AND RECORDING MEDIUM AND ELECTRONIC DEVICE THEREFOR
    Publication number: 20150162017
    Abstract: A quantizing method is provided that includes quantizing an input signal by selecting one of a first quantization scheme not using an inter-frame prediction and a second quantization scheme using the inter-frame prediction, in consideration of one or more of a prediction mode, a predictive error and a transmission channel state.
    Type: Application
    Filed: February 18, 2015
    Publication date: June 11, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Eun-mi OH
  • APPARATUS FOR QUANTIZING LINEAR PREDICTIVE CODING COEFFICIENTS, SOUND ENCODING APPARATUS, APPARATUS FOR DE-QUANTIZING LINEAR PREDICTIVE CODING COEFFICIENTS, SOUND DECODING APPARATUS, AND ELECTRONIC DEVICE THEREFORE
    Publication number: 20150162016
    Abstract: A quantizing apparatus is provided that includes a quantization path determiner that determines a path from a first path not using inter-frame prediction and a second path using the inter-frame prediction, as a quantization path of an input signal, based on a criterion before quantization of the input signal; a first quantizer that quantizes the input signal, if the first path is determined as the quantization path of the input signal; and a second quantizer that quantizes the input signal, if the second path is determined as the quantization path of the input signal.
    Type: Application
    Filed: February 18, 2015
    Publication date: June 11, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang SUNG, Eun-mi OH
  • METHOD FOR ENCODING AND DECODING AN AUDIO SIGNAL AND APPARATUS FOR SAME
    Publication number: 20150154975
    Abstract: A method for coding and decoding an audio signal or speech signal and an apparatus adopting the method are provided.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 4, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki Hyun CHOO, Jung-Hoe KIM, Eun Mi OH, Ho Sang SUNG
  • METHOD AND APPARATUS FOR CONCEALING FRAME ERROR AND METHOD AND APPARATUS FOR AUDIO DECODING
    Publication number: 20150142452
    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: Application
    Filed: June 10, 2013
    Publication date: May 21, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-sang Sung, Nam-suk Lee
  • ERROR CONCEALMENT METHOD AND APPARATUS FOR AUDIO SIGNAL AND DECODING METHOD AND APPARATUS FOR AUDIO SIGNAL USING THE SAME
    Publication number: 20150120309
    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: Application
    Filed: January 5, 2015
    Publication date: April 30, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Eum-mi OH, Ki-hyun CHOO, Ho-sang SUNG, Chang-yong SON, Jung-hoe KIM, Kang-eun LEE
  • Apparatus for quantizing linear predictive coding coefficients, sound encoding apparatus, apparatus for de-quantizing linear predictive coding coefficients, sound decoding apparatus, and electronic device therefore
    Patent number: 8977543
    Abstract: A quantizing apparatus is provided that includes a quantization path determiner that determines a path from a first path not using inter-frame prediction and a second path using the inter-frame prediction, as a quantization path of an input signal, based on a criterion before quantization of the input signal; a first quantizer that quantizes the input signal, if the first path is determined as the quantization path of the input signal; and a second quantizer that quantizes the input signal, if the second path is determined as the quantization path of the input signal.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-sang Sung, Eun-mi Oh
  • Method of quantizing linear predictive coding coefficients, sound encoding method, method of de-quantizing linear predictive coding coefficients, sound decoding method, and recording medium and electronic device therefor
    Patent number: 8977544
    Abstract: A quantizing method is provided that includes quantizing an input signal by selecting one of a first quantization scheme not using an inter-frame prediction and a second quantization scheme using the inter-frame prediction, in consideration of one or more of a prediction mode, a predictive error and a transmission channel state.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-sang Sung, Eun-mi Oh
  • Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same
    Patent number: 8930188
    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: January 6, 2015
    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 for decoding an audio signal based on coding mode and context flag
    Patent number: 8918324
    Abstract: A method for coding and decoding an audio signal or speech signal and an apparatus adopting the method are provided.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: December 23, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki Hyun Choo, Jung-Hoe Kim, Eun Mi Oh, Ho Sang Sung
  • Method and apparatus for encoding/decoding speech signal
    Patent number: 8914280
    Abstract: An apparatus and method for encoding/decoding a speech signal which determines a variable bit rate based on reserved bits obtained from a target bit rate, is provided. The variable bit rate is determined based on a source feature of the speech signal and the reserved bits is obtained based on the target bit rate. The apparatus for encoding the speech signal may include a linear predictive (LP) analysis unit/quantization unit to determine an immittance spectral frequencies (ISF) index, a closed loop pitch search unit, a fixed codebook search unit, a gain vector quantization (VQ) unit to determine a gain vector quantization (VQ) index, and a bit rate control unit to control at least two indexes of the ISF index, the pitch index, the code index, and the gain VQ index to be encoded to be variable bit rates based on a source feature of a speech signal and the reserved bits.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: December 16, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Sang Sung, Eun Mi Oh
  • Apparatus and method of encoding and decoding signals
    Patent number: 8856012
    Abstract: A method of encoding an audio signal, where signals including two or more channel signals are downmixed to a mono signal, the mono signal is divided into a low-frequency signal and a high-frequency signal, the low-frequency signal is encoded through algebraic code excited linear prediction (ACELP) or transform coded excitation (TCX), and the high-frequency signal is encoded using the low-frequency signal. A method of decoding of an audio signal, a low-frequency signal encoded through ACELP or TCX is decoded, a high-frequency signal is decoded using the low-frequency signal, the low-frequency signal and the high-frequency signal are combined to generate a mono signal, and the mono signal is upmixed by decoding spatial parameters regarding signals including two or more channel signals.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: October 7, 2014
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Ho-sang Sung, Eun-mi Oh, Jung-hoe Kim, Ki-hyun Choo, Mi-young Kim
  • Frame error concealment method and apparatus and decoding method and apparatus using the same
    Patent number: 8843798
    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: November 6, 2007
    Date of Patent: September 23, 2014
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Ho-sang Sung, Kang-eun Lee, Jung-hoe Kim, Eun-mi Oh
  • FRAME ERROR CONCEALMENT METHOD AND APPARATUS AND DECODING METHOD AND APPARATUS USING THE SAME
    Publication number: 20140245091
    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: May 8, 2014
    Publication date: August 28, 2014
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Ho-sang SUNG, Kang-eun LEE, Jung-hoe KIM, Eun-mi OH
  • Method and apparatus to conceal error in decoded audio signal
    Patent number: 8798172
    Abstract: A method and apparatus to decode audio data constructed with a plurality of layers. An error concealment method of process a decoded bitstream selects one of a frequency domain and a time domain in order to conceal the errors, detects a position where the errors exist in a frame when the error concealment method in the frequency domain is selected, and conceals the errors only in a segment after the detected position.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: August 5, 2014
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Eun-mi Oh, Ho-sang Sung, Chang-yong Son, Ki-hyun Choo, Jung-hoe Kim