公开(公告)号：US20200178257A1

公开(公告)日：2020-06-04

申请号：US16783637

申请日：2020-02-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyung-hun Jung ,  Ho-sang Sung ,  Eun-mi Oh ,  Jong-hoon Jeong ,  Ki-hyun Choo

IPC: H04W72/04 ,  H04W76/10 ,  H04W28/20 ,  H04W68/00 ,  H04L29/06 ,  H04W4/80 ,  H04M1/725

Abstract: Disclosed are a user terminal device and a control method therefor. The control method for a user terminal device comprises the steps of: determining state information of a satellite device connected with a user terminal device when a call request message is received from another terminal device; determining communication configuration information with the another terminal device on the basis of the state information of the satellite device, and transmitting a call response message including the communication configuration information to the another terminal device; and receiving audio data from the another terminal device according to a communication scheme corresponding to the communication configuration information. Therefore, in comparison with the prior art, the present invention can reduce a call negotiation time between user terminal devices, and thus reduce a call cost.

公开(公告)号：USRE47824E1

公开(公告)日：2020-01-21

申请号：US14883356

申请日：2015-10-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Anton Porov ,  Eun-mi Oh ,  Jung-hoo Kim

IPC: G10L19/02 ,  G10L21/038

Abstract: Provided is a method and apparatus for encoding or decoding a signal corresponding to a high frequency band in an audio signal. The method and apparatus for encoding a high frequency band detects and encodes frequency component(s) according to a pre-set criterion from a signal corresponding to a frequency band higher than a pre-set frequency and encodes energy value(s) of a signal to reconstruct band(s) in which the detected frequency component(s) are included. The method and apparatus for decoding a high frequency band decodes the signal by adjusting a signal to reconstruct a band in which important frequency component(s) are included by considering an energy value of the important frequency component(s). Accordingly, even though encoding or decoding is performed using a small number of bits, there is no degradation in sound quality of a signal corresponding to a high frequency band, and thus coding efficiency can be maximized.

公开(公告)号：US10453466B2

公开(公告)日：2019-10-22

申请号：US16215079

申请日：2018-12-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Ho-sang Sung

IPC: G10L19/12 ,  G10L19/24 ,  G10L19/038 ,  G10L21/038 ,  G10L19/00

Abstract: A method and apparatus for performing coding and decoding for high-frequency bandwidth extension. The coding apparatus may classify a coding mode of a low-frequency signal of an input signal based on characteristics of the low-frequency signal of an input signal, perform code excited linear prediction coding or audio coding on the LPC excitation signal of the low-frequency signal of an input signal, and perform time-domain (TD) extension coding or frequency-domain (FD) extension coding on a high-frequency signal of an input signal. When the FD extension coding is performed, the coding apparatus may generate a base excitation signal for a high band using an input spectrum, obtain an energy control factor of a sub-band in a frame using the base excitation signal and the input spectrum, generate an energy signal based on the input spectrum and the energy control factor, for the sub-band in the frame, and quantize the energy signal.

公开(公告)号：US10339948B2

公开(公告)日：2019-07-02

申请号：US15700737

申请日：2017-09-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo

IPC: G10L19/02 ,  G10L19/08 ,  G10L19/18 ,  G10L19/20 ,  G10L19/22 ,  G10L19/008 ,  G10L21/038 ,  G10L21/0388

Abstract: Disclosed are a method and apparatus for encoding and decoding a high frequency for bandwidth extension. The method includes: estimating a weight; and generating a high frequency excitation signal by applying the weight between random noise and a decoded low frequency spectrum.

公开(公告)号：US10255928B2

公开(公告)日：2019-04-09

申请号：US15810636

申请日：2017-11-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Ho-sang Sung ,  Jung-hoe Kim ,  Mi-young Kim

IPC: G10L21/00 ,  G10L21/038 ,  G10L19/028 ,  G10L19/02

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.

公开(公告)号：US09858933B2

公开(公告)日：2018-01-02

申请号：US15332523

申请日：2016-10-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang Sung ,  Ki-hyun Choo ,  Jung-hoe Kim ,  Eun-mi Oh ,  Chang-yong Son ,  Kang-eun Lee

IPC: G10L19/00 ,  G10L21/00 ,  G10L13/00 ,  G10L19/005 ,  G10L19/022

CPC classification number: G10L19/0017 ,  G10L19/005 ,  G10L19/022

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.

公开(公告)号：US09847090B2

公开(公告)日：2017-12-19

申请号：US15629375

申请日：2017-06-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang Sung ,  Jie Zhan ,  Ki-hyun Choo

IPC: G10L19/18 ,  G10L19/20 ,  G10L19/22 ,  G10L25/90 ,  G10L25/78

CPC classification number: G10L19/20 ,  G10L19/18 ,  G10L19/22 ,  G10L25/78 ,  G10L25/81 ,  G10L25/90

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.

公开(公告)号：US09728196B2

公开(公告)日：2017-08-08

申请号：US15149847

申请日：2016-05-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun Mi Oh ,  Jung Hoe Kim ,  Ki-hyun Choo ,  Ho Sang Sung ,  Mi Young Kim

IPC: G10L19/00 ,  G10L19/03 ,  G10L19/008 ,  G10L19/16 ,  G10L19/02 ,  G10L19/04 ,  G10L19/20 ,  G10L19/12

CPC classification number: G10L19/03 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/0212 ,  G10L19/04 ,  G10L19/12 ,  G10L19/167 ,  G10L19/20

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.

公开(公告)号：US09704492B2

公开(公告)日：2017-07-11

申请号：US14589617

申请日：2015-01-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eun-mi Oh ,  Ki-hyun Choo ,  Ho-sang Sung ,  Chang-yong Son ,  Jung-hoe Kim ,  Kang-eun Lee

IPC: G10L19/00 ,  G10L19/005 ,  H03M13/00

CPC classification number: G10L19/005 ,  G10L19/0212 ,  G10L19/022 ,  H03M13/00

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.

公开(公告)号：US09478227B2

公开(公告)日：2016-10-25

申请号：US14474220

申请日：2014-09-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Lei Miao ,  Eun-mi Oh

IPC: G10L19/00 ,  G10L19/06 ,  G10L19/02 ,  G10L21/038 ,  G10L19/04 ,  G10L19/07 ,  G10L25/12 ,  G10L25/90

CPC classification number: G10L19/06 ,  G10L19/02 ,  G10L19/0208 ,  G10L19/04 ,  G10L19/07 ,  G10L19/167 ,  G10L21/038 ,  G10L25/12 ,  G10L25/21 ,  G10L25/90

Abstract: Provided are a method and apparatus for encoding and decoding a high frequency signal by using a low frequency signal. The high frequency signal can be encoded by extracting a coefficient by linear predicting a high frequency signal, and encoding the coefficient, generating a signal by using the extracted coefficient and a low frequency signal, and encoding the high frequency signal by calculating a ratio between the high frequency signal and an energy value of the generated signal. Also, the high frequency signal can be decoded by decoding a coefficient, which is extracted by linear predicting a high frequency signal, and a low frequency signal, and generating a signal by using the decoded coefficient and the decoded low frequency signal, and adjusting the generated signal by decoding a ratio between the generated signal and an energy value of the high frequency signal.