公开(公告)号：US07369613B2

公开(公告)日：2008-05-06

申请号：US10243081

申请日：2002-09-12

申请人： Davide Concion ,  Emiliano Piccinelli ,  Danilo Pau

发明人： Davide Concion ,  Emiliano Piccinelli ,  Danilo Pau

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/40 ,  H04N19/59

摘要： A process for format conversion of DCT macroblocks in an MPEG video bitstream that are divided into blocks, each of which includes a plurality of microblocks. In each DCT block, the significant frequencies are identified and preserved, isolating a corresponding microblock preferably consisting of the microblock on the top left of each block and setting to zero the coefficients of the remaining microblocks. On the microblock thus isolated there is performed an inverse discrete cosine transform, and the microblock thus obtained is merged with the homologous microblocks obtained from the other blocks comprised in a respective starting macroblock, so as to give rise to a merging block. The merging block thus obtained undergoes a discrete cosine transform so as to obtain a final block, which can be assembled into a macroblock with converted format.

摘要翻译： MPEG视频比特流中的DCT宏块的格式转换处理，被分成块，每个块包括多个微块。 在每个DCT块中，识别和保存有效频率，隔离优选地由每个块的左上角的微块组成的相应微块，并将剩余微块的系数设置为零。 在这样隔离的微块上，执行逆离散余弦变换，并且由此获得的微块与从包含在相应起始宏块中的其他块获得的同源微块合并，以产生合并块。 如此获得的合并块经历离散余弦变换，以获得最终的块，其可以被组合成具有转换格式的宏块。

公开(公告)号：US20120307887A1

公开(公告)日：2012-12-06

申请号：US13251089

申请日：2011-09-30

申请人： Davide Concion

发明人： Davide Concion

IPC分类号： H04N7/26

CPC分类号： H04N19/507 ,  H04N19/107 ,  H04N19/136 ,  H04N19/167 ,  H04N19/23

摘要： A device for encoding video image data includes a data receiver that receives a current image frame to be compressed, the current image frame being composed of a plurality of current macroblocks. An information receiver receives metadata that includes information that identifies static areas within the received current image frame. An encoder encodes each of the plurality of current macroblocks. The encoder encodes a current macroblock that is entirely within the static areas as having no difference from a corresponding preceding macroblock in a preceding frame by using an encoded macroblock that is created without comparing the current macroblock to the corresponding preceding macroblock. The metadata may include information that identifies regular video and graphics within the received current image frame and the encoder may make different compression decisions according to the inclusion of regular video and graphics within the current macroblock.

摘要翻译： 用于编码视频图像数据的装置包括接收当前图像帧以被压缩的数据接收器，当前图像帧由多个当前宏块构成。 信息接收器接收包含识别接收到的当前图像帧内的静态区域的信息的元数据。 编码器对多个当前宏块中的每一个进行编码。 编码器通过使用在不将当前宏块与相应的先前宏块进行比较而创建的编码宏块，将完全在静态区域内的当前宏块编码为与前一帧中的对应的先前宏块没有差异。 元数据可以包括识别接收到的当前图像帧内的常规视频和图形的信息，并且编码器可以根据在当前宏块内包含常规视频和图形来进行不同的压缩决定。

公开(公告)号：US07961792B2

公开(公告)日：2011-06-14

申请号：US11435214

申请日：2006-05-16

申请人： Gregory R. Maertens ,  Kourosh Soroushian ,  Davide Concion

发明人： Gregory R. Maertens ,  Kourosh Soroushian ,  Davide Concion

IPC分类号： H04N7/12 ,  H04N9/475

CPC分类号： H04N21/8547 ,  G11B27/10 ,  H04N21/2368 ,  H04N21/4307 ,  H04N21/4325 ,  H04N21/4341 ,  H04N21/8106

摘要： An apparatus having a first circuit, a second circuit and a third circuit. The first circuit may be configured to (i) demultiplex a multimedia stream having one or more video and audio streams and (ii) generate one or more video signals and one or more audio data signals in response to demultiplexing the multimedia stream. The multimedia stream may be independent of embedded time stamps. The second circuit may be configured to (i) decode the one or more video data signals and the one or more audio data signals and (ii) generate a video current time signal for each decoded video signal and an audio current time signal for each decoded audio signal. The third circuit may be configured to synchronize the playback of each decoded audio signal and each decoded video signal with the video current time signal and the audio current time signal.

摘要翻译： 一种具有第一电路，第二电路和第三电路的装置。 第一电路可以被配置为（i）解复用具有一个或多个视频和音频流的多媒体流，以及（ii）响应于解复用多媒体流生成一个或多个视频信号和一个或多个音频数据信号。 多媒体流可以独立于嵌入式时间戳。 第二电路可以被配置为（i）解码一个或多个视频数据信号和一个或多个音频数据信号，并且（ii）为每个解码的视频信号和音频当前时间信号生成每个解码的视频信号的视频当前时间信号 音频信号。 第三电路可以被配置为使每个解码的音频信号和每个解码的视频信号的重放与视频当前时间信号和音频当前时间信号同步。

公开(公告)号：US20070268404A1

公开(公告)日：2007-11-22

申请号：US11435214

申请日：2006-05-16

申请人： Gregory R. Maertens ,  Kourosh Soroushian ,  Davide Concion

发明人： Gregory R. Maertens ,  Kourosh Soroushian ,  Davide Concion

IPC分类号： H04B1/66 ,  H04N9/475

CPC分类号： H04N21/8547 ,  G11B27/10 ,  H04N21/2368 ,  H04N21/4307 ,  H04N21/4325 ,  H04N21/4341 ,  H04N21/8106

摘要： An apparatus comprising a first circuit, a second circuit and a third circuit. The first circuit may be configured to (i) demultiplex a multimedia stream having one or more video and audio streams and (ii) generate one or more video signals and one or more audio data signals in response to demultiplexing the multimedia stream. The multimedia stream may be independent of embedded time stamps. The second circuit may be configured to (i) decode the one or more video data signals and the one or more audio data signals and (ii) generate a video current time signal for each decoded video signal and an audio current time signal for each decoded audio signal. The third circuit may be configured to synchronize the playback of each decoded audio signal and each decoded video signal with the video current time signal and the audio current time signal.

摘要翻译： 一种包括第一电路，第二电路和第三电路的装置。 第一电路可以被配置为（i）解复用具有一个或多个视频和音频流的多媒体流，以及（ii）响应于解复用多媒体流生成一个或多个视频信号和一个或多个音频数据信号。 多媒体流可以独立于嵌入式时间戳。 第二电路可以被配置为（i）解码一个或多个视频数据信号和一个或多个音频数据信号，并且（ii）为每个解码的视频信号和音频当前时间信号生成每个解码的视频信号的视频当前时间信号 音频信号。 第三电路可以被配置为使每个解码的音频信号和每个解码的视频信号的重放与视频当前时间信号和音频当前时间信号同步。

公开(公告)号：US09154804B2

公开(公告)日：2015-10-06

申请号：US13251089

申请日：2011-09-30

申请人： Davide Concion

发明人： Davide Concion

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/507 ,  H04N19/167 ,  H04N19/136 ,  H04N19/107 ,  H04N19/23

CPC分类号： H04N19/507 ,  H04N19/107 ,  H04N19/136 ,  H04N19/167 ,  H04N19/23

摘要： A device for encoding video image data includes a data receiver that receives a current image frame to be compressed, the current image frame being composed of a plurality of current macroblocks. An information receiver receives metadata that includes information that identifies static areas within the received current image frame. An encoder encodes each of the plurality of current macroblocks. The encoder encodes a current macroblock that is entirely within the static areas as having no difference from a corresponding preceding macroblock in a preceding frame by using an encoded macroblock that is created without comparing the current macroblock to the corresponding preceding macroblock. The metadata may include information that identifies regular video and graphics within the received current image frame and the encoder may make different compression decisions according to the inclusion of regular video and graphics within the current macroblock.

摘要翻译： 用于编码视频图像数据的装置包括接收当前图像帧以被压缩的数据接收器，当前图像帧由多个当前宏块构成。 信息接收器接收包含识别接收到的当前图像帧内的静态区域的信息的元数据。 编码器对多个当前宏块中的每一个进行编码。 编码器通过使用在不将当前宏块与相应的先前宏块进行比较而创建的编码宏块，将完全在静态区域内的当前宏块编码为与前一帧中的对应的先前宏块没有差异。 元数据可以包括识别接收到的当前图像帧内的常规视频和图形的信息，并且编码器可以根据在当前宏块内包含常规视频和图形来进行不同的压缩决定。

公开(公告)号：US20110249729A1

公开(公告)日：2011-10-13

申请号：US12794580

申请日：2010-06-04

申请人： Xiaosong ZHOU ,  Dazhong Zhang ,  Davide Concion ,  Hsi-Jung Wu ,  Douglas Scott Price

发明人： Xiaosong ZHOU ,  Dazhong Zhang ,  Davide Concion ,  Hsi-Jung Wu ,  Douglas Scott Price

IPC分类号： H04N7/26

CPC分类号： H04N19/105 ,  H04N19/114 ,  H04N19/166 ,  H04N19/58 ,  H04N19/89

摘要： Embodiments of the present invention provide a video encoding system that codes video sequence into a multi-level hierarchy based on levels of long term reference (LTR) frames. According to the present invention, an encoder designates a reference frame as a long term reference (LTR) frame and transmits the LTR frame to a receiver. Upon receiving feedback from the receiver acknowledging receipt of the LTR frame, the encoder periodically codes subsequent frames as reference frames using the acknowledged LTR frame as a reference and designates subsequent reference frames as secondary LTR frames. A determined number of frames after each secondary LTR frame may be coded using a preceding secondary LTR frame as a reference.

摘要翻译： 本发明的实施例提供了一种视频编码系统，其基于长期参考（LTR）帧的级别将视频序列编码为多级层级。 根据本发明，编码器将参考帧指定为长期参考（LTR）帧，并将LTR帧发送到接收机。 在接收到来自确认接收到LTR帧的接收机的反馈时，编码器使用确认的LTR帧作为参考，将后续帧定时作为参考帧，并将后续参考帧指定为辅助LTR帧。 每个辅助LTR帧之后的确定数量的帧可以使用先前的次级LTR帧作为参考进行编码。