公开(公告)号：US09756364B2

公开(公告)日：2017-09-05

申请号：US12962007

申请日：2010-12-07

Applicant: Ho-jin Ha ,  Hyung-tak Choi ,  Sun-bal Kim ,  O-hoon Kwon ,  Jae-yeon Song ,  Sung-ryeul Rhyu ,  Ji-Eun Keum ,  Seo-young Hwang ,  Guanhua Zhang

Inventor： Ho-jin Ha ,  Hyung-tak Choi ,  Sun-bal Kim ,  O-hoon Kwon ,  Jae-yeon Song ,  Sung-ryeul Rhyu ,  Ji-Eun Keum ,  Seo-young Hwang ,  Guanhua Zhang

IPC: H04N21/2343 ,  H04N21/235 ,  H04N21/2362 ,  H04N21/24 ,  H04N21/658 ,  H04N21/81 ,  H04N21/845 ,  H04L29/06 ,  H04N21/258 ,  H04N21/44 ,  H04N21/4722 ,  H04N21/858

CPC classification number: H04N21/23439 ,  H04L65/4084 ,  H04L65/605 ,  H04N21/2353 ,  H04N21/2362 ,  H04N21/2402 ,  H04N21/25866 ,  H04N21/44016 ,  H04N21/4722 ,  H04N21/6581 ,  H04N21/812 ,  H04N21/8456 ,  H04N21/8586

Abstract: A method and apparatus for reproducing media data are provided. The method includes: receiving a first file including information about a period of first content and information about a period of second content; receiving and reproducing media data of the first content based on the received first file; stopping reproducing of the media data of the first content and receiving and reproducing media data of the second content based on the first file; and receiving and reproducing the media data of the first content when the reproducing the media data of the second content is completed, wherein the information about the period of the second content includes location information about the second media data of the second content or location information of a second file including the location information about the second media data of the second content.

公开(公告)号：US08515265B2

公开(公告)日：2013-08-20

申请号：US12945194

申请日：2010-11-12

Applicant: O-hoon Kwon ,  Ho-jin Ha ,  Guanhua Zhang ,  Hyung-tak Choi ,  Sun-bal Kim ,  Ji-Eun Keum ,  Sung-bin Im

Inventor： O-hoon Kwon ,  Ho-jin Ha ,  Guanhua Zhang ,  Hyung-tak Choi ,  Sun-bal Kim ,  Ji-Eun Keum ,  Sung-bin Im

IPC: H04N5/783

CPC classification number: H04N21/23439 ,  H04L65/4084 ,  H04L65/4092 ,  H04N21/2353 ,  H04N21/2387 ,  H04N21/2402 ,  H04N21/6581 ,  H04N21/6587 ,  H04N21/845 ,  H04N21/8456

Abstract: A method and apparatus for providing a trick play service in a hypertext transfer protocol (HTTP) adaptive streaming (HAS) architecture for adaptively streaming media data according to fluctuation of a streaming environment are provided. The method at a server includes: generating a media presentation description (MPD) file including information about at least one piece of trick play data; transmitting the MPD file to a client; and transmitting the at least one piece of trick play data to the client in response to a request by the client based on the MPD file. The method at a client includes: receiving a media presentation description (MPD) file including information about at least one piece of trick play data; and receiving the at least one piece of trick play data from a server based on the MPD file.

Abstract translation: 提供了一种用于在超文本传输​​协议（HTTP）自适应流（HAS）架构中提供特技播放服务的方法和装置，用于根据流环境的波动自适应地流式传输媒体数据。 服务器上的方法包括：生成包括关于至少一个特技播放数据的信息的媒体呈现描述（MPD）文件; 将MPD文件发送给客户端; 以及响应于所述客户端基于所述MPD文件的请求，将所述至少一个特技播放数据发送​​给所述客户端。 客户端的方法包括：接收包括关于至少一条特技播放数据的信息的媒体呈现描述（MPD）文件; 以及基于所述MPD文件从服务器接收所述至少一条特技播放数据。

公开(公告)号：US07292635B2

公开(公告)日：2007-11-06

申请号：US10892447

申请日：2004-07-16

Applicant: Chang-hoon Yim ,  Ho-jin Ha ,  Bac-keun Lee ,  Woo-jin Han

Inventor： Chang-hoon Yim ,  Ho-jin Ha ,  Bac-keun Lee ,  Woo-jin Han

IPC: H04B1/66

CPC classification number: H04N19/53 ,  H04N19/13 ,  H04N19/61 ,  H04N19/615 ,  H04N19/63

Abstract: An interframe wavelet video coding (IWVC) method by which an average temporal distance (ATD) is minimized is provided. The IWVC method comprises receiving a group-of-frames and decomposing the group-of-frames into difference frames and first average frames between the frames in a first forward temporal direction and a backward temporal direction, wavelet-decomposing the first difference frames and the first average frames, and quantizing coefficients resulting from the wavelet-decomposition to generate a bitstream. The IWVC method provides improved video coding performance.

Abstract translation: 提供了将平均时间距离（ATD）最小化的帧间小波视频编码（IWVC）方法。 IWVC方法包括：接收一组帧，并将该组帧分解为第一前向和后向方向上的帧之间的差分帧和第一平均帧，小波分解第一差分帧和 第一平均帧和由小波分解产生的量化系数以产生比特流。 IWVC方法提供了改进的视频编码性能。

公开(公告)号：US20060083300A1

公开(公告)日：2006-04-20

申请号：US11251917

申请日：2005-10-18

Applicant: Woo-jin Han ,  Bae-keun Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Ho-jin Ha ,  Kyo-hyuk Lee

Inventor： Woo-jin Han ,  Bae-keun Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Ho-jin Ha ,  Kyo-hyuk Lee

IPC: H04N11/04 ,  H04N7/12 ,  H04B1/66 ,  H04N11/02

CPC classification number: H04N19/615 ,  H04N19/115 ,  H04N19/117 ,  H04N19/127 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/162 ,  H04N19/164 ,  H04N19/172 ,  H04N19/177 ,  H04N19/187 ,  H04N19/31 ,  H04N19/34 ,  H04N19/36 ,  H04N19/46 ,  H04N19/517 ,  H04N19/577 ,  H04N19/587 ,  H04N19/59 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70 ,  H04N19/86

Abstract: Video coding and decoding methods using interlayer filtering and a video encoder and decoder using the same are provided. Multi-layer video coding employing a plurality of video coding algorithms can improve video coding efficiency by using interlayer filtering. The video coding method includes encoding video frames using a first video coding scheme, performing interlayer filtering on the frames encoded by the first video coding scheme, encoding the video frames using a second video coding scheme by referring to the frames subjected to the interlayer filtering, and generating a bitstream containing the frames encoded by the first and second video coding schemes.

Abstract translation: 提供了使用层间滤波的视频编码和解码方法以及使用其的视频编码器和解码器。 使用多个视频编码算法的多层视频编码可以通过使用层间滤波来提高视频编码效率。 视频编码方法包括使用第一视频编码方案对视频帧进行编码，对由第一视频编码方案编码的帧执行层间滤波，通过参照经过层间滤波的帧对第二视频编码方式进行编码， 以及生成包含由第一和第二视频编码方案编码的帧的比特流。

公开(公告)号：US20050047509A1

公开(公告)日：2005-03-03

申请号：US10925013

申请日：2004-08-25

Applicant: Bae-keun Lee ,  Ho-jin Ha ,  Woo-jin Han ,  Jae-young Lee

Inventor： Bae-keun Lee ,  Ho-jin Ha ,  Woo-jin Han ,  Jae-young Lee

IPC: H04N7/32 ,  H04N7/12 ,  H04N7/26

CPC classification number: H04N19/615 ,  H04N19/115 ,  H04N19/124 ,  H04N19/13 ,  H04N19/146 ,  H04N19/61 ,  H04N19/63

Abstract: Scalable video coding and decoding methods, a scalable video encoder, and a scalable video decoder. The scalable video coding method includes receiving a GOP, performing temporal filtering and spatial transformation thereon, quantizing and generating a bitstream. The scalable video encoder for performing the scalable video coding method includes a weight determination block which determines a weight for scaling. The scalable video decoding method includes dequantizing the coded image information obtained from a received bitstream, performing descaling, inverse spatial transformation, and inverse temporal filtering on the scaled transform coefficients, thereby recovering video frames. The scalable video decoder for performing the scalable video decoding method includes an inverse weighting block. The standard deviation of Peak Signal to Noise Ratios (PSNRs) of frames included in a group of pictures (GOP) is reduced so that video coding performance can be increased.

Abstract translation: 可扩展视频编码和解码方法，可分级视频编码器和可伸缩视频解码器。 可分级视频编码方法包括接收GOP，对其进行时间滤波和空间变换，量化和生成比特流。 用于执行可伸缩视频编码方法的可分级视频编码器包括确定缩放权重的权重确定块。 可分级视频解码方法包括对从接收到的比特流获得的编码图像信息进行去量化，对经缩放的变换系数执行除鳞，逆空间变换和逆时间滤波，从而恢复视频帧。 用于执行可分级视频解码方法的可分级视频解码器包括反向加权块。 降低包括在一组图像（GOP）中的帧的峰值信号与噪声比（PSNR）的标准偏差，从而可以增加视频编码性能。

公开(公告)号：US09277252B2

公开(公告)日：2016-03-01

申请号：US13153523

申请日：2011-06-06

Applicant: Ho-jin Ha ,  O-hoon Kwon ,  Guanhua Zhang ,  Hyung-tak Choi ,  Sun-bal Kim ,  Ji-eun Keum

Inventor： Ho-jin Ha ,  O-hoon Kwon ,  Guanhua Zhang ,  Hyung-tak Choi ,  Sun-bal Kim ,  Ji-eun Keum

IPC: G06F15/16 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/2362 ,  H04N21/24 ,  H04N21/658 ,  H04N21/81 ,  H04N21/845

CPC classification number: H04N21/23439 ,  H04N21/2353 ,  H04N21/2362 ,  H04N21/2402 ,  H04N21/6581 ,  H04N21/812 ,  H04N21/8456

Abstract: A method and apparatus are provided for performing adaptive streaming according to a streaming environment based on information about a plurality of elements for determining qualities of a plurality of media data with respect to the same content.

Abstract translation: 提供了一种方法和装置，用于根据关于多个元素的信息，根据流媒体环境执行自适应流，用于确定相对于相同内容的多个媒体数据的质量。

公开(公告)号：US08116578B2

公开(公告)日：2012-02-14

申请号：US13005990

申请日：2011-01-13

Applicant: Woo-jin Han ,  Kyo-hyuk Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Bae-keun Lee ,  Ho-jin Ha

Inventor： Woo-jin Han ,  Kyo-hyuk Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Bae-keun Lee ,  Ho-jin Ha

IPC: G06K9/46

CPC classification number: H04N19/577 ,  H04N19/31 ,  H04N19/51 ,  H04N19/517

Abstract: A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.

Abstract translation: 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量，从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量，第二帧速率大于 第一帧速率，如果在相同时刻没有基本层帧的情况下，通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测运动矢量 位置作为第一增强层帧，并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差，以及所获得的基本层中的运动矢量。

公开(公告)号：US07889793B2

公开(公告)日：2011-02-15

申请号：US11254051

申请日：2005-10-20

Applicant: Woo-jin Han ,  Kyo-hyuk Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Bae-keun Lee ,  Ho-jin Ha

Inventor： Woo-jin Han ,  Kyo-hyuk Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Bae-keun Lee ,  Ho-jin Ha

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC classification number: H04N19/577 ,  H04N19/31 ,  H04N19/51 ,  H04N19/517

Abstract: A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.

Abstract translation: 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量，从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量，第二帧速率大于 第一帧速率，如果在相同时刻没有基本层帧的情况下，通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测的运动矢量 位置作为第一增强层帧，并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差，以及所获得的基本层中的运动矢量。

公开(公告)号：US20060120450A1

公开(公告)日：2006-06-08

申请号：US11290515

申请日：2005-12-01

Applicant: Woo-jin Han ,  Sang-chang Cha ,  Ho-jin Ha

Inventor： Woo-jin Han ,  Sang-chang Cha ,  Ho-jin Ha

IPC: H04N11/04 ,  H04B1/66 ,  H04N7/12 ,  H04N11/02

CPC classification number: H04N19/59 ,  H04N19/11 ,  H04N19/147 ,  H04N19/15 ,  H04N19/176 ,  H04N19/19 ,  H04N19/61 ,  H04N19/91

Abstract: A video compression method, and more particularly, a prediction method for efficiently eliminating redundancy within a video frame, and a video compression method and an apparatus using the prediction method are provided. There is provided a method for encoding video based on a multi-layer structure, including performing intra-prediction on a current intra-block using images of neighboring intra-blocks of the current intra-block to obtain a prediction residual, performing prediction on the current intra-block using an image of a lower layer region corresponding to the current intra-block to obtain a prediction residual, selecting one of the two prediction residuals that offers higher coding efficiency, and encoding the selected prediction residual.

Abstract translation: 提供一种视频压缩方法，更具体地，提供一种用于有效消除视频帧内的冗余的预测方法以及使用该预测方法的视频压缩方法和装置。 提供了一种用于基于多层结构对视频进行编码的方法，包括使用当前帧内相邻帧内的图像对当前块内进行帧内预测，​​以获得预测残差，对 使用与当前帧内对应的下层区域的图像的当前帧内块来获得预测残差，选择提供更高编码效率的两个预测残差中的一个，并对所选择的预测残差进行编码。

公开(公告)号：US20050157793A1

公开(公告)日：2005-07-21

申请号：US11034734

申请日：2005-01-14

Applicant: Ho-jin Ha ,  Woo-jin Han

Inventor： Ho-jin Ha ,  Woo-jin Han

IPC: H04N7/24 ,  H04N7/12 ,  H04N7/26

CPC classification number: H04N19/615 ,  H04N19/13 ,  H04N19/61 ,  H04N19/63

Abstract: A video encoder/decoder and method. The video coding method includes estimating a virtual frame, electing a reference frame from candidate frames including the virtual frame to remove temporal redundancy using the elected reference frame, coding a motion vector and predetermined information obtained in removing the temporal redundancy, and obtaining transform coefficients from the frames free from the temporal redundancy and quantizing the obtained transform coefficients to generate a bit-stream. The video decoding method includes receiving a bit-stream and parsing the received bit-stream to extract information on coded frames, inversely quantizing the information on the coded frames to obtain the transform coefficients, and performing inverse spatial transform of the obtained transform coefficients and inverse temporal transform by use of a reference frame including a virtual frame in inverse order to an order in which redundancy of the coded frames is removed and restoring the coded frames. As a result, it is possible to code the video at a higher compression rate.

Abstract translation: 视频编码器/解码器和方法。 视频编码方法包括估计虚拟帧，从包括虚拟帧的候选帧中选择参考帧，以使用所选择的参考帧去除时间冗余，对运动矢量进行编码以及在消除时间冗余时获得的预定信息，以及从 帧没有时间冗余并量化所获得的变换系数以产生比特流。 视频解码方法包括接收比特流并解析接收到的比特流以提取关于编码帧的信息，对编码帧的信息进行逆量化以获得变换系数，并对所获得的变换系数进行逆空间变换 通过使用包括虚拟帧的参考帧以与去除编码帧的冗余的顺序相反的顺序进行时间变换并恢复编码帧。 结果，可以以更高的压缩率对视频进行编码。