公开(公告)号：US09171550B2

公开(公告)日：2015-10-27

申请号：US12801632

申请日：2010-06-17

Applicant: Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh

Inventor： Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh

IPC: G10L19/00 ,  G10L21/04 ,  H03M7/00 ,  H04N7/26 ,  G10L19/20 ,  H03M7/40

CPC classification number: G10L19/20 ,  G10L19/0017 ,  H03M7/4006 ,  H03M7/4012 ,  H03M7/4018

Abstract: Disclosed are a context-based arithmetic encoding apparatus and method and a context-based arithmetic decoding apparatus and method. The context-based arithmetic decoding apparatus may determine a context of a current N-tuple to be decoded, determine a Most Significant Bit (MSB) context corresponding to an MSB symbol of the current N-tuple, and determine a probability model using the context of the N-tuple and the MSB context. Subsequently, the context-based arithmetic decoding apparatus may perform a decoding on an MSB based on the determined probability model, and perform a decoding on a Least Significant Bit (LSB) based on a bit depth of the LSB derived from a process of decoding on an escape code.

Abstract translation: 公开了一种基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法。 基于上下文的算术解码装置可以确定要解码的当前N元组的上下文，确定与当前N元组的MSB符号相对应的最高有效位（MSB）上下文，并使用上下文确定概率模型 的N元组和MSB上下文。 随后，基于上下文的算术解码装置可以基于所确定的概率模型对MSB执行解码，并且基于从解码处理导出的LSB的位深度对最低有效位（LSB）执行解码 一个转义码。

公开(公告)号：US08918324B2

公开(公告)日：2014-12-23

申请号：US13254119

申请日：2010-01-27

Applicant: Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh ,  Ho Sang Sung

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

IPC: G10L19/00 ,  G10L21/00 ,  G10L19/02 ,  G10L25/90 ,  G10L25/93 ,  G10L19/12 ,  G10L21/04 ,  G10L19/20

CPC classification number: G10L19/20 ,  G10L19/12

Abstract: A method for coding and decoding an audio signal or speech signal and an apparatus adopting the method are provided.

Abstract translation: 提供了一种对音频信号或语音信号进行编码和解码的方法以及采用该方法的装置。

公开(公告)号：US08861738B2

公开(公告)日：2014-10-14

申请号：US13563808

申请日：2012-08-01

Applicant: Jung-hoe Kim ,  Eun-mi Oh ,  Konstantin Osipov ,  Ki-hyun Choo

Inventor： Jung-hoe Kim ,  Eun-mi Oh ,  Konstantin Osipov ,  Ki-hyun Choo

IPC: H04H20/47 ,  H04H40/36 ,  H04H20/88 ,  G10L19/008

CPC classification number: H04H40/36 ,  G10L19/008 ,  H04H20/47 ,  H04H20/88

Abstract: A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.

Abstract translation: 提供了一种多通道信号解码方法。 解码表示多声道信号的下混信号，并对表示多声道信号的声道之间的特征关系的参数进行解码。 通过使用解码参数来估计附加参数，并且通过使用解码参数和估计参数对解码的下混合信号进行混合，以解码多声道信号。

公开(公告)号：US08718284B2

公开(公告)日：2014-05-06

申请号：US13557848

申请日：2012-07-25

Applicant: Jung-hoe Kim ,  Eun-mi Oh ,  Konstantly Osipov ,  Ki-hyun Choo

Inventor： Jung-hoe Kim ,  Eun-mi Oh ,  Konstantly Osipov ,  Ki-hyun Choo

IPC: H04H20/47

CPC classification number: H04H40/36 ,  G10L19/008 ,  H04H20/47 ,  H04H20/88

Abstract: A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.

公开(公告)号：US08676569B2

公开(公告)日：2014-03-18

申请号：US13544203

申请日：2012-07-09

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

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

IPC: G10L19/00

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.

Abstract translation: 一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。 错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择 重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

公开(公告)号：US08321229B2

公开(公告)日：2012-11-27

申请号：US12256704

申请日：2008-10-23

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

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

IPC: G06F15/00 ,  G10L19/00 ,  G10L21/00

CPC classification number: G10L25/93 ,  G10L21/038

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.

Abstract translation: 提供了一种对音频信号进行编码或解码的方法和装置。 在该方法和装置中，根据信号中包含的有声或无声音的程度来更新用于对高频信号进行编码或解码的噪声底层电平。

公开(公告)号：US20120294447A1

公开(公告)日：2012-11-22

申请号：US13483954

申请日：2012-05-30

Applicant: Jung Hoe KIM ,  Eunmi OH ,  Mi Young KIM ,  Ki Hyun CHOO

Inventor： Jung Hoe KIM ,  Eunmi OH ,  Mi Young KIM ,  Ki Hyun CHOO

IPC: H04R5/00

CPC classification number: G10L19/008

Abstract: An apparatus and method for encoding/decoding a multi-channel signal may be provided. The apparatus of encoding a multi-channel signal may insert information about whether to encode a phase parameter indicating phase information of a plurality of channels, included in the multi-channel signal, in a bitstream of the multi-channel signal. The apparatus of decoding a multi-channel signal may determine whether to up-mix a mono signal using the phase parameter based on the information about whether to encode.

Abstract translation: 可以提供用于对多信道信号进行编码/解码的装置和方法。 编码多声道信号的装置可以在多声道信号的比特流中插入关于是否编码指示包括在多声道信号中的多个声道的相位信息的相位参数的信息。 解码多声道信号的装置可以基于关于是否编码的信息，使用相位参数来确定是否对单声道信号进行混合。

公开(公告)号：US20120065965A1

公开(公告)日：2012-03-15

申请号：US13137779

申请日：2011-09-12

Applicant: Ki Hyun Choo ,  Eun Mi Oh ,  Ho Sang Sung

Inventor： Ki Hyun Choo ,  Eun Mi Oh ,  Ho Sang Sung

IPC: G10L19/02 ,  G10L19/14

CPC classification number: G10L19/12 ,  G10L19/00 ,  G10L19/038 ,  G10L19/24 ,  G10L21/038

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.

Abstract translation: 提供了一种用于编码和解码用于高频带宽扩展的信号的装置和方法。 编码装置可以对时域输入信号进行采样，可以对下采样的时域输入信号进行核编码，可以将核心编码的时域输入信号变换为频域输入信号，并且可以使用 频域输入信号的基本信号。

公开(公告)号：US20120020406A1

公开(公告)日：2012-01-26

申请号：US13137025

申请日：2011-07-15

Applicant: Ki Hyun Choo ,  Eun Mioh

Inventor： Ki Hyun Choo ,  Eun Mioh

IPC: H04B1/66

CPC classification number: G10L19/0017 ,  G10L19/035

Abstract: Provided are a method and apparatus of a lossless encoding and decoding based on a context. According to an embodiment, by aligning and coding symbols of a MSB, a coding efficiency may be enhanced. According to an embodiment, by estimating initial scaling information using a symbol located proximate to a symbol of the MSB, the coding efficiency may be enhanced.

Abstract translation: 提供了一种基于上下文的无损编码和解码的方法和装置。 根据实施例，通过对MSB的符号进行对准和编码，可以提高编码效率。 根据实施例，通过使用位于MSB的符号附近的符号来估计初始缩放信息，可以提高编码效率。

公开(公告)号：US07965206B2

公开(公告)日：2011-06-21

申请号：US12432811

申请日：2009-04-30

Applicant: Ki Hyun Choo ,  Konstantin Osipov ,  Boris Kudryashov

Inventor： Ki Hyun Choo ,  Konstantin Osipov ,  Boris Kudryashov

IPC: H03M7/40

CPC classification number: H03M7/40 ,  H03M7/4006

Abstract: An apparatus and a method of lossless coding and decoding are provided. The apparatus to perform lossless coding may selectively perform an arithmetic coding scheme or a Huffman coding scheme with respect to a symbol. The apparatus to perform lossless coding may generate a bitstream including a first coding bit, generated according to the Huffman coding scheme. Such bitstream may include a reserved bit for the arithmetic coding scheme.

Abstract translation: 提供了无损编码和解码的装置和方法。 执行无损编码的装置可以选择性地执行关于符号的算术编码方案或霍夫曼编码方案。 执行无损编码的装置可以生成包括根据霍夫曼编码方案生成的第一编码比特的比特流。 这样的比特流可以包括用于算术编码方案的保留位。