公开(公告)号：US20130230095A1

公开(公告)日：2013-09-05

申请号：US13005665

申请日：2011-01-13

Applicant: Manu Mathew ,  Sumit Kandpal

Inventor： Manu Mathew ,  Sumit Kandpal

IPC: H04N7/26

CPC classification number: H04N19/36 ,  H04N19/31 ,  H04N19/33 ,  H04N19/66

Abstract: This invention is a method of scalable video encoding and decoding. The scalable video encoding codes both a base layer and an enhanced layer having greater resolution and/or refresh rate. Upon decoding some enhanced layer pictures may be dropped to reach a best resolution and refresh rate within a target data rate. Upon encoding a key picture in at least one group of pictures forming the video is a combined base layer/enhanced layer key picture. Such a combined base layer/enhanced layer key picture cannot be dropped on decoding. This technique reduces drift in the decoder.

Abstract translation: 本发明是一种可分级视频编码和解码的方法。 可分级视频编码对基本层和具有更高分辨率和/或刷新率的增强层进行编码。 在解码时，可以丢弃一些增强层图像以达到目标数据速率内的最佳分辨率和刷新率。 一旦对形成视频的至少一组图像中的关键画面进行编码，就是组合的基本层/增强层关键画面。 这样的组合基层/增强层密钥图像在解码时不能丢弃。 该技术减少了解码器中的漂移。

公开(公告)号：US08406294B2

公开(公告)日：2013-03-26

申请号：US11708336

申请日：2007-02-21

Applicant: Manu Mathew ,  Kyo-hyuk Lee ,  Woo-jin Han

Inventor： Manu Mathew ,  Kyo-hyuk Lee ,  Woo-jin Han

IPC: H04N7/12

CPC classification number: H04N19/36 ,  H04N19/187 ,  H04N19/19 ,  H04N19/34

Abstract: A method of assigning a priority for controlling a bit rate of a bitstream having a plurality of quality layers is provided. The method includes composing first quality layers for a reference picture, composing second quality layers for a current picture that is encoded with reference to the reference picture, and assigning a priority each of the first and second quality layers, wherein a low priority is assigned to a quality layer having a small influence on a video quality reduction of the current picture when the quality layer is truncated.

Abstract translation: 提供了一种分配用于控制具有多个质量层的比特流的比特率的优先级的方法。 该方法包括：为参考图像组合第一质量层，为参照参考图像编码的当前图像构成第二质量层，以及分配第一和第二质量层的优先级，其中低优先级被分配给 质量层在质量层被截断时对当前图像的视频质量降低具有小的影响。

公开(公告)号：US20060159283A1

公开(公告)日：2006-07-20

申请号：US11257123

申请日：2005-10-25

Applicant: Manu Mathew ,  Manish Arora

Inventor： Manu Mathew ,  Manish Arora

IPC: H03G5/00 ,  H03G3/00

CPC classification number: H04R3/04

Abstract: A method and apparatus for audio bass enhancement is provided. The method includes band-pass filtering an input signal; generating at least one even and odd harmonics of the band-pass filtered input signal; and synthesizing the harmonics and the band-pass filtered input signal to be output.

Abstract translation: 提供了用于音频低音增强的方法和装置。 该方法包括对输入信号进行带通滤波; 产生带通滤波的输入信号的至少一个偶次和奇数谐波; 并合成要输出的谐波和带通滤波的输入信号。

公开(公告)号：US08170356B2

公开(公告)日：2012-05-01

申请号：US12060887

申请日：2008-04-02

Applicant: Manu Mathew ,  Soyeb Nagori ,  Pramod Kumar Swami

Inventor： Manu Mathew ,  Soyeb Nagori ,  Pramod Kumar Swami

IPC: G06K9/36

CPC classification number: H04N19/31 ,  H04N19/107 ,  H04N19/114 ,  H04N19/124 ,  H04N19/139 ,  H04N19/142 ,  H04N19/159 ,  H04N19/164 ,  H04N19/172 ,  H04N19/177 ,  H04N19/56 ,  H04N19/61

Abstract: The method, system, and apparatus of linear temporal reference scheme having non-reference predictive frames is disclosed. In one embodiment, a method of a temporal reference scheme includes creating a non-reference predictive frame and a reference predictive frame from a reference frame, increasing a quantization factor of the non-reference predictive frame by a threshold value, and decreasing the quantization factor of the reference predictive frame by the threshold value. The method may include toggling between the temporal reference scheme and another temporal reference scheme in which there may be no non-reference predictive frames and only reference predictive frames based on a scenario. The method may also include calculating a target bit rate across a communication channel through a bit rate calculation algorithm that considers a bandwidth capacity across the communication channel.

Abstract translation: 公开了具有非参考预测帧的线性时间参考方案的方法，系统和装置。 在一个实施例中，时间参考方案的方法包括从参考帧创建非参考预测帧和参考预测帧，将非参考预测帧的量化因子增加阈值，并且减小量化因子 的参考预测帧的阈值。 该方法可以包括在时间参考方案和另一个时间参考方案之间切换，其中可以不存在基于场景的非参考预测帧和仅参考预测帧。 该方法还可以包括通过考虑跨通信信道的带宽容量的比特率计算算法来计算跨通信信道的目标比特率。

公开(公告)号：US20100315557A1

公开(公告)日：2010-12-16

申请号：US12794942

申请日：2010-06-07

Applicant: Manu Mathew ,  Soyeb Nagori ,  Akira Osamoto

Inventor： Manu Mathew ,  Soyeb Nagori ,  Akira Osamoto

IPC: H04N5/00

CPC classification number: H04N19/198 ,  H04N19/126 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/61

Abstract: Image frames of a video stream are encoded with the aim of reducing flicker in the video stream when displayed. In one embodiment, the quantization parameter used to quantize an image frame is capped to be not greater than a quantization parameter used to quantize an immediately previous image frame. In another embodiment, the quantization step size used to quantize a macro-block of an image frame is computed based on the value of a quantization error of a co-located macro-block in an immediately previous image frame. In yet another embodiment, macro-block transform coefficients corresponding to high-frequency components are quantized using relatively higher quantization parameter values if the image frame is deemed to contain high activity. In yet another embodiment, flicker-prone macro-blocks of a source frame are replaced by corresponding best-match macro-blocks of a previous reconstructed frame, prior to being encoded.

Abstract translation: 视频流的图像帧被编码，目的是在显示时减少视频流中的闪烁。 在一个实施例中，用于量化图像帧的量化参数被限制为不大于用于量化紧接在前的图像帧的量化参数。 在另一个实施例中，用于量化图像帧的宏块的量化步长基于紧邻的前一图像帧中的同位置宏块的量化误差的值来计算。 在另一个实施例中，如果图像帧被认为包含高活动性，则使用相对较高的量化参数值来量化对应于高频分量的宏块变换系数。 在另一个实施例中，在被编码之前，源帧的闪烁容易的宏块被先前重建帧的对应的最佳匹配宏块替代。

公开(公告)号：US09374592B2

公开(公告)日：2016-06-21

申请号：US13607716

申请日：2012-09-08

Applicant: Manu Mathew ,  Ranga Ramanujam Srinivasan

Inventor： Manu Mathew ,  Ranga Ramanujam Srinivasan

IPC: H04N7/32 ,  H04N19/42 ,  H04N19/176 ,  H04N19/11 ,  H04N19/107 ,  H04N11/04 ,  H04N7/12 ,  H04N11/02

CPC classification number: H04N19/42 ,  H04N19/107 ,  H04N19/11 ,  H04N19/176

Abstract: A video system includes an encoder for generating a compressed bit stream in response to a received video signal. The encoder includes a mode decision processor that is arranged to determine whether the mode of a first pixel block in a first row is an “intra-mode” or an “inter-mode.” The encoder also includes a mode estimation processor that is arranged to estimate the mode of a left pixel block in a second row that is received after the first row in response to the determined mode of the first pixel block in the first row. The encoder also includes a pixel block processor that is arranged to process a pixel block in the second row that is to the right of the left pixel block in response to the estimated mode of the left pixel block.

Abstract translation: 视频系统包括用于响应于接收到的视频信号而产生压缩比特流的编码器。 编码器包括：模式决定处理器，被配置为确定第一行中的第一像素块的模式是“帧内模式”还是“帧间模式”。编码器还包括布置的模式估计处理器 以响应于第一行中的第一像素块的确定模式来估计在第一行之后接收的第二行中的左像素块的模式。 编码器还包括像素块处理器，其被配置为响应于左像素块的估计模式来处理在左像素块的右侧的第二行中的像素块。

公开(公告)号：US09152875B2

公开(公告)日：2015-10-06

申请号：US12777433

申请日：2010-05-11

Applicant: Manu Mathew ,  Soyeb Nagori

Inventor： Manu Mathew ,  Soyeb Nagori

IPC: G06K9/32 ,  H04N19/149 ,  H04N19/61 ,  H04N19/124 ,  H04N19/14 ,  H04N19/152

CPC classification number: G06K9/3266 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/152 ,  H04N19/61

Abstract: A video encoder receives a macro-block of an image frame, and determines whether the macro-block contains text. The video encoder computes a quantization parameter for quantizing the macro-block, with the quantization parameter computed to be smaller if the macro-block is determined to contain text. The video encoder encodes the macro-block using the quantization parameter. Text quality in the encoded macro-block is preserved.

Abstract translation: 视频编码器接收图像帧的宏块，并且确定宏块是否包含文本。 视频编码器计算用于量化宏块的量化参数，如果宏块被确定为包含文本，则计算的量化参数更小。 视频编码器使用量化参数对宏块进行编码。 编码宏块中的文本质量得以保留。

公开(公告)号：US20140072040A1

公开(公告)日：2014-03-13

申请号：US13607716

申请日：2012-09-08

Applicant: Manu Mathew ,  Ranga Ramanujam Srinivasan

Inventor： Manu Mathew ,  Ranga Ramanujam Srinivasan

IPC: H04N7/32

CPC classification number: H04N19/42 ,  H04N19/107 ,  H04N19/11 ,  H04N19/176

Abstract: A video system includes an encoder for generating a compressed bit stream in response to a received video signal. The encoder includes a mode decision processor that is arranged to determine whether the mode of a first pixel block in a first row is an “intra-mode” or an “inter-mode.” The encoder also includes a mode estimation processor that is arranged to estimate the mode of a left pixel block in a second row that is received after the first row in response to the determined mode of the first pixel block in the first row. The encoder also includes a pixel block processor that is arranged to process a pixel block in the second row that is to the right of the left pixel block in response to the estimated mode of the left pixel block.

Abstract translation: 视频系统包括用于响应于接收到的视频信号而产生压缩比特流的编码器。 编码器包括：模式决定处理器，被配置为确定第一行中的第一像素块的模式是“帧内模式”还是“帧间模式”。 编码器还包括模式估计处理器，其被配置为响应于第一行中的第一像素块的确定模式来估计在第一行之后接收的第二行中的左像素块的模式。 编码器还包括像素块处理器，其被配置为响应于左像素块的估计模式来处理在左像素块的右侧的第二行中的像素块。

公开(公告)号：US08582645B2

公开(公告)日：2013-11-12

申请号：US12794942

申请日：2010-06-07

Applicant: Manu Mathew ,  Soyeb Nagori ,  Akira Osamoto

Inventor： Manu Mathew ,  Soyeb Nagori ,  Akira Osamoto

IPC: H04N5/00

CPC classification number: H04N19/198 ,  H04N19/126 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/61

Abstract: Image frames of a video stream are encoded with the aim of reducing flicker in the video stream when displayed. In one embodiment, the quantization parameter used to quantize an image frame is capped to be not greater than a quantization parameter used to quantize an immediately previous image frame. In another embodiment, the quantization step size used to quantize a macro-block of an image frame is computed based on the value of a quantization error of a co-located macro-block in an immediately previous image frame. In yet another embodiment, macro-block transform coefficients corresponding to high-frequency components are quantized using relatively higher quantization parameter values if the image frame is deemed to contain high activity. In yet another embodiment, flicker-prone macro-blocks of a source frame are replaced by corresponding best-match macro-blocks of a previous reconstructed frame, prior to being encoded.

Abstract translation: 视频流的图像帧被编码，目的是在显示时减少视频流中的闪烁。 在一个实施例中，用于量化图像帧的量化参数被限制为不大于用于量化紧接在前的图像帧的量化参数。 在另一个实施例中，用于量化图像帧的宏块的量化步长基于紧邻的前一图像帧中的同位置宏块的量化误差的值来计算。 在另一个实施例中，如果图像帧被认为包含高活动性，则使用相对较高的量化参数值来量化对应于高频分量的宏块变换系数。 在另一个实施例中，在被编码之前，源帧的闪烁容易的宏块被先前重建帧的对应的最佳匹配宏块替代。

公开(公告)号：US07602812B2

公开(公告)日：2009-10-13

申请号：US11097083

申请日：2005-04-04

Applicant: Manu Mathew ,  Eun-hee Rhim

Inventor： Manu Mathew ,  Eun-hee Rhim

IPC: H04J3/06

CPC classification number: H04N21/654 ,  H04N21/23406 ,  H04N21/23608 ,  H04N21/434 ,  H04N21/4344 ,  H04N21/44004 ,  H04N21/4425 ,  H04N21/6332

Abstract: A client for playing a video stream and a method thereof adaptively control the video play in accordance with variable communication environments and the size of the video stream to be transmitted. The client includes a demultiplexer for generating elementary stream (ES) packets by demultiplexing a video stream; a FIFO buffer for temporarily storing the ES packets; a play timing modification unit for reducing a gap of a play time caused by a burst error by modifying time stamps of the ES packets that exist in the FIFO buffer if it is judged that the burst error occurs; and a video decoder for generating an output video by decoding the ES packets of which the time stamps are modified. The client can relatively improve the quality of the video streaming in multimedia communications through a wireless or wire network.

Abstract translation: 用于播放视频流的客户端及其方法根据可变通信环境和要发送的视频流的大小自适应地控制视频播放。 客户端包括：解复用器，用于通过解复用视频流来生成基本流（ES）分组; 用于临时存储ES分组的FIFO缓冲器; 播放定时修改单元，用于通过修改存在于FIFO缓冲器中的ES分组的时间标记来减少由突发错误引起的播放时间的间隙，如果判断出突发错误发生的话; 以及视频解码器，用于通过解码修改了时间戳的ES分组来产生输出视频。 客户端可以通过无线或有线网络相对提高多媒体通信中视频流的质量。