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    High-band encoding method and device, and high-band decoding method and device
    61.
    发明授权
    High-band encoding method and device, and high-band decoding method and device 有权

    公开(公告)号：US10909993B2

    公开(公告)日：2021-02-02

    申请号：US16592876

    申请日：2019-10-04

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Ki-hyun Choo ,  Eun-mi Oh

    IPC: G10L19/00 ,  G10L21/00 ,  G10L21/04 ,  G10L19/002 ,  G10L19/02 ,  G10L21/038

    Abstract: A high-band encoding/decoding method and device for bandwidth extension are provided. A high-band encoding method comprising the steps of: generating sub band-specific bit allocation information on the basis of a low-band envelope; determining, on the basis of the sub band-specific bit allocation information, the sub band requiring an envelope update in a high band; and generating, for the determined sub band, refinement data relating to the envelope update. A high-band decoding method comprising the steps of: generating sub band-specific bit allocation information on the basis of a low-band envelope; determining, on the basis of the sub band-specific bit allocation information, the sub band requiring an envelope update in a high band; and decoding, for the determined sub band, refinement data relating to the envelope update, thereby updating the envelope.

    User terminal device and control method therefor
    62.
    发明授权
    User terminal device and control method therefor 有权

    公开(公告)号：US10560939B2

    公开(公告)日：2020-02-11

    申请号：US15778680

    申请日：2016-11-24

    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 ,  H04W88/04

    Abstract: Disclosed are a user terminal device and a control method therefor. The control method for a user terminal device according to the present invention 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.

    Method and apparatus for high frequency decoding for bandwidth extension
    63.
    发明授权
    Method and apparatus for high frequency decoding for bandwidth extension 有权

    公开(公告)号：US10410645B2

    公开(公告)日：2019-09-10

    申请号：US15123897

    申请日：2015-03-03

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Seon-ho Hwang

    IPC: G10L19/12 ,  G10L21/038 ,  G10L19/18 ,  G10L19/012 ,  G10L19/16 ,  G10L19/08

    Abstract: Disclosed are a method and an apparatus for high frequency decoding for bandwidth extension. The method for high frequency decoding for bandwidth extension comprises the steps of: decoding an excitation class; transforming a decoded low frequency spectrum on the basis of the excitation class; and generating a high frequency excitation spectrum on the basis of the transformed low frequency spectrum. The method and apparatus for high frequency decoding for bandwidth extension according to an embodiment can transform a restored low frequency spectrum and generate a high frequency excitation spectrum, thereby improving the restored sound quality without an excessive increase in complexity.

    Audio-encoding method and apparatus, audio-decoding method and apparatus, recoding medium thereof, and multimedia device employing same
    68.
    发明授权
    Audio-encoding method and apparatus, audio-decoding method and apparatus, recoding medium thereof, and multimedia device employing same 有权
    音频编码方法和装置，音频解码方法和装置，其编码介质以及使用它的多媒体装置

    公开(公告)号：US09589569B2

    公开(公告)日：2017-03-07

    申请号：US15142594

    申请日：2016-04-29

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Anton Porov ,  Konstantin Osipov ,  Ki-hyun Choo

    IPC: G10L19/00 ,  G10L19/02 ,  G10L19/008 ,  G10L19/002 ,  G10L19/032 ,  G10L19/16

    CPC classification number: G10L19/0017 ,  G10L19/002 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/032 ,  G10L19/167

    Abstract: Provided is an audio encoding method. The audio encoding method includes: acquiring envelopes based on a predetermined sub-band for an audio spectrum; quantizing the envelopes based on the predetermined sub-band; and obtaining a difference value between quantized envelopes for adjacent sub-bands and lossless encoding a difference value of a current sub-band by using a difference value of a previous sub-band as a context. Accordingly, the number of bits required to encode envelope information of an audio spectrum may be reduced in a limited bit range, thereby increasing the number of bits required to encode an actual spectral component.

    Abstract translation: 提供了一种音频编码方法。 音频编码方法包括：基于用于音频频谱的预定子带获取信封; 基于预定的子带量化信封; 并且通过使用前一子带的差值作为上下文，获得相邻子带的量化包络之间的差值，并对当前子带的差值进行无损编码。 因此，编码音频频谱的包络信息所需的比特数可以在有限的比特范围内减少，由此增加编码实际频谱分量所需的比特数。

    Method and apparatus for adaptively encoding and decoding high frequency band
    70.
    发明授权
    Method and apparatus for adaptively encoding and decoding high frequency band 有权
    用于自适应编码和解码高频带的方法和装置

    公开(公告)号：US09159333B2

    公开(公告)日：2015-10-13

    申请号：US13686015

    申请日：2012-11-27

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Chang-yong Son ,  Eun-mi Oh ,  Ki-hyun Choo ,  Jung-hoe Kim

    IPC: G10L19/02 ,  G10L21/00 ,  G10L19/08

    CPC classification number: G10L21/038 ,  G10L19/0204 ,  G10L19/08 ,  G10L21/00

    Abstract: Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

    Abstract translation: 提供了一种用于对音频信号进行编码和解码的方法和装置。 根据本申请，通过使用低于预设频带的低频信号，在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。 因此，即使当通过使用少量位来对音频信号进行编码或解码时，高频信号的声音质量也不会恶化，从而可以使编码效率最大化。

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