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1.发明授权公开(公告)号：US12155398B2
公开(公告)日：2024-11-26
申请号：US18113756
申请日：2023-02-24
Inventor： In Ki Hwang , Hun Sik Kang , Joon Ki Lee
IPC: H03M13/11
Abstract: Provided are a method of low-complexity decoding based on soft decision and a computing device for performing the method. The method of low-complexity decoding based on soft decision, performed by a computing device, includes receiving a vector, in which a codeword is modulated, through a channel, determining a decoding result by sequentially applying the received vector to one or more decoding algorithms, and decoding the codeword based on an analysis on the decoding result of a detector corresponding to each of the one or more decoding algorithms.
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公开(公告)号：US11411583B2
公开(公告)日：2022-08-09
申请号：US17199605
申请日：2021-03-12
Inventor： Seung-Woo Lee , Hun Sik Kang , In Ki Hwang
Abstract: A deinterleaving method and a deinterleaving system performing the same are disclosed. According to an example embodiment, a data processing method includes dividing data into first data blocks of a first number of bits, performing deinterleaving on the first data blocks, and dividing deinterleaved data into second data blocks of a second number of bits and outputting the second data blocks, wherein the first number of bits is determined based on a minimum switching unit of a deinterleaving operation and the second number of bits.
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3.发明授权公开(公告)号：US10904043B2
公开(公告)日：2021-01-26
申请号：US15931821
申请日：2020-05-14
Inventor： Hun Sik Kang , Sang Rok Moon , Seung Woo Lee , In Ki Hwang , Sun Hyok Chang
Abstract: An optical transmission method for processing a signal based on direct detection includes setting, by an equalizer, an adaptive equalization coefficient by performing an equalization process during a training symbol field section in a frame of a received signal, performing, by a channel estimator, channel estimation to perform an equalization process of a soft output maximum likelihood sequence equalizer (MLSE) during the training symbol field section, driving the soft output MLSE, and compensating for, by the soft output MLSE, distortion of the received signal during a data symbol field section in the frame on the basis of the adaptive equalization coefficient and an estimated result value of a channel, and recovering, by an error corrector which allows soft-decision processing to be performed, the received signal by performing error correction on the received signal in which the distortion is compensated for.
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公开(公告)号：US09807340B2
公开(公告)日：2017-10-31
申请号：US14951005
申请日：2015-11-24
Inventor： In Ki Hwang , Mi Suk Lee
CPC classification number: H04N7/144 , H04N13/111 , H04N13/128 , H04N13/239 , H04N13/271 , H04N13/383
Abstract: The present invention relates to a new eye-contact function providing method which provides a natural eye-contact function to attendances by using a stereo image and a depth image to estimate a precise depth value of the occlusion region and improve a quality of a composite eye-contact image when there are two or more remote attendances in one site at the time of a video conference using a video conference system and an apparatus therefor.
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Patent Agency Ranking
公开(公告)号：US09602770B2
公开(公告)日：2017-03-21
申请号：US14669227
申请日：2015-03-26
Inventor： In Ki Hwang , Do Young Kim , Yeong Jin Kim
CPC classification number: H04N7/152 , H04L65/1066 , H04L65/1073 , H04L65/403
Abstract: Provided is a method of supporting a videoconference between clients through a plurality of media servers under the control of a management server. The method includes requesting a client change, from a first client connected to a first media server, to a second client to be connected to a second media server; generating a mirror session for the second client according to the request for the client change; and stopping a session for the first client.
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6.发明授权Wideband acoustic echo cancellation apparatus with adaptive tail length in embedded system, and wideband acoustic echo cancellation method 有权嵌入式系统中具有自适应尾长的宽带声回波消除装置，以及宽带声回声消除方法公开(公告)号：US09042566B2
公开(公告)日：2015-05-26
申请号：US13722051
申请日：2012-12-20
Inventor： In Ki Hwang
Abstract: A wideband acoustic echo cancellation apparatus with an adaptive tail length in an embedded system, and a wideband acoustic echo cancellation method are provided, and the wideband acoustic echo cancellation apparatus may include a delay length calculating unit to calculate a delay length of an echo path, using a near-end signal and a far-end signal, an adaptive filter implementing unit to implement an adaptive filter based on the calculated delay length, using selected coefficients, and an error calculating unit to search for three intervals having a largest impulse response value from all intervals of a tail of the adaptive filter, and to calculate an error during an interval in which the selected coefficients are used.
Abstract translation: 提供了一种在嵌入式系统中具有自适应尾部长度的宽带声回波消除装置和宽带声回波消除方法，并且宽带声回波消除装置可包括延迟长度计算单元，用于计算回波路径的延迟长度， 使用近端信号和远端信号，自适应滤波器实现单元，使用所选择的系数基于所计算的延迟长度来实现自适应滤波器;以及误差计算单元，以搜索具有最大脉冲响应值的三个间隔 从自适应滤波器的尾部的所有间隔开始，并且在使用所选择的系数的间隔期间计算误差。
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公开(公告)号：US10523323B2
公开(公告)日：2019-12-31
申请号：US16207287
申请日：2018-12-03
Inventor： Hun Sik Kang , Sang Rok Moon , Seung-Woo Lee , Sun Hyok Chang , In Ki Hwang
IPC: H04B10/54 , H04B10/2513 , H04B10/079
Abstract: A method and apparatus for compensation of a chromatic dispersion through an optical compensation and an electronical compensation in optical communication. An optical communication method receives an optical signal, estimates a first transmission length based on a null component included in a frequency spectrum of the optical signal, optically compensates for a chromatic dispersion of the optical signal based on the first transmission length, estimates a second transmission length based on a null component included in a frequency spectrum of the compensated optical signal, and electronically compensates for a residual chromatic dispersion of the compensated optical signal based on the second transmission length.
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公开(公告)号：US09407871B2
公开(公告)日：2016-08-02
申请号：US14625962
申请日：2015-02-19
Inventor： Mi Suk Lee , In Ki Hwang
CPC classification number: H04N7/15 , G06F3/013 , G06F3/017 , G06F3/0304 , G06K9/00335 , G06K9/00597 , G06T3/0093 , H04N7/144 , H04N7/147
Abstract: Disclosed are an apparatus and a method of controlling an eye-to-eye contact function, which provide a natural eye-to-eye contact by controlling an eye-to-eye contact function based on gaze information about a local participant and position information about a remote participant on a screen when providing the eye-to-eye contact function by using an image combination method and the like in a teleconference system, thereby improving absorption to a teleconference.
Abstract translation: 公开了一种控制眼睛接触功能的装置和方法，其通过基于关于本地参与者的凝视信息和关于本地参与者的位置信息来控制眼睛接触功能来提供自然的眼睛接触接触 通过在电话会议系统中使用图像组合方法等来提供眼睛接触功能，从而提高对电话会议的吸收的屏幕上的远程参与者。
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公开(公告)号：US09025763B2
公开(公告)日：2015-05-05
申请号：US13762510
申请日：2013-02-08
Inventor： In Ki Hwang , Chang Choo
Abstract: Disclosed is an apparatus and method for cancelling a wideband acoustic echo that controls a data flow of data that is transmitted and received using a central processing unit, and calculates data using a calculation processing unit configured to be distinct from the central processing unit.
Abstract translation: 公开了一种用于取消使用中央处理单元发送和接收的数据的数据流的宽带声回波的装置和方法，并且使用被配置成与中央处理单元不同的计算处理单元来计算数据。
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