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1. 发明授权

US06970479B2 Encoding and decoding of a digital signal 有权
标题翻译：数字信号的编码和解码
公开(公告)号：US06970479B2
公开(公告)日：2005-11-29
申请号：US09853883
申请日：2001-05-10
申请人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
发明人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
IPC分类号： G10L19/02 , H04J3/24 , G10L19/04 , G10L19/08 , H04J3/07
CPC分类号： G10L19/02
摘要： The invention relates to methods for encoding/decoding of a digital signal which is transmitted over a packet switched network. Prediction samples are generated at the transmitting and receiving end. The digital signal is lossless encoded at the transmitting end, and lossless decoded at the receiving end, based on the quantizations of generated prediction samples. During encoding, the generated prediction samples are quantized separately from the quantization of the digital samples. The predictions are used in the index domain in the form of quantized indices during encoding/decoding of the digital signal.
摘要翻译：本发明涉及通过分组交换网络发送的数字信号的编码/解码方法。在发送和接收端生成预测样本。数字信号在发送端进行无损编码，并根据生成的预测样本的量化在接收端进行无损解码。在编码期间，所生成的预测样本与数字样本的量化分开量化。预测在数字信号的编码/解码期间以量化索引的形式在索引域中使用。

2. 发明授权

US07009935B2 Transmission over packet switched networks 有权
标题翻译：通过分组交换网络进行传输
公开(公告)号：US07009935B2
公开(公告)日：2006-03-07
申请号：US09852939
申请日：2001-05-09
申请人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
发明人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
IPC分类号： H04L12/28 , H04L12/66 , G10L21/00
CPC分类号： H04L12/6418 , H04L2012/6481
摘要： The invention relates to methods for encoding/decoding a digitized sound signal which is transmitted over a packet switched network in such a way that diversity is provided. Each sound segment of the digitized sound signal is encoded into at least two different segment descriptions, i.e. into different representations of the sound signal segment. The segment descriptions differ from each other in that they provide different quantization values for a digital sound signal sample. The different segment descriptions are transmitted in separate data packets over the network at different points of time.
摘要翻译：本发明涉及通过分组交换网络以提供分集的方式对数字化声音信号进行编码/解码的方法。数字化声音信号的每个声音段被编码成至少两个不同的段描述，即声音信号段的不同表示。段描述彼此不同之处在于它们为数字声音信号样本提供不同的量化值。不同的段描述在不同的时间点通过网络在单独的数据分组中传输。

3. 发明授权

US08880414B2 Low bit rate codec 有权
标题翻译：低比特率编解码器
公开(公告)号：US08880414B2
公开(公告)日：2014-11-04
申请号：US13030929
申请日：2011-02-18
申请人： Soren Vang Andersen , Roar Hagen , Bastiaan Kleijn
发明人： Soren Vang Andersen , Roar Hagen , Bastiaan Kleijn
IPC分类号： G10L21/00 , G10L19/04 , G10L19/02
CPC分类号： G10L19/04 , G10L19/0212
摘要： The present invention relates to improvements of predictive encoding/decoding operations performed on a signal which is transmitted over a packet switched network. The signal is encoded on a block by block basis in such way that a block A-B is predictive encoded independently of any preceding blocks. A start state 715 located somewhere between the end boundaries A and B of the block is encoded using any applicable coding method. Both block parts surrounding the start state is then predictive encoded based on the start state and in opposite directions with respect to each other, thereby resulting in a full encoded representation 745 of the block A-B. At the decoding end, corresponding decoding operations are performed.
摘要翻译：本发明涉及对通过分组交换网络发送的信号执行的预测编码/解码操作的改进。该信号以块为单位进行编码，使块A-B独立于任何先前的块进行预测编码。使用任何适用的编码方法对位于块的结束边界A和B之间某处的开始状态715进行编码。然后，基于开始状态和相对于彼此的相反方向对包围开始状态的两个块部分进行预测编码，从而得到块A-B的完全编码表示745。在解码端，执行相应的解码操作。

4. 发明申请

US20090063158A1 EFFICIENT AUDIO CODING USING SIGNAL PROPERTIES 审中-公开
标题翻译：使用信号特性的高效音频编码
公开(公告)号：US20090063158A1
公开(公告)日：2009-03-05
申请号：US11718242
申请日：2005-11-02
申请人： Tor Johan Fredrik Norden , Soren Vang Andersen , Soren Holdt Jensen , Willem Bastiaan Kleijn , Nicolle Hanneke Van Schijndel
发明人： Tor Johan Fredrik Norden , Soren Vang Andersen , Soren Holdt Jensen , Willem Bastiaan Kleijn , Nicolle Hanneke Van Schijndel
IPC分类号： G10L19/00
CPC分类号： G10L19/18
摘要： An audio encoder comprising optimizing means ET OPT adapted to generate an optimized encoding template OET based on properties PV of an input audio signal IN, such as in form of a property vector. The optimized encoding template OET is being optimized with respect to a predetermined encoding efficiency criterion. Encoding means ENC then generates an encoded audio signal OUT in accordance with the optimized encoding template OET. The audio encoder may comprise analyzing means AN adapted to generate the set of input signal properties PV based of the input signal IN. In a preferred embodiment the optimizing means ET OPT is adapted to estimate a resulting distortion associated with an encoding template. The optimizing means ET OPT may further be able to estimate bit rate associated with an encoding template. In one embodiment the optimizing means ET OPT is adapted to optimize a bit rate distribution to a number of sub-encoders based on the input signal properties (PV). In another embodiment, the optimizing means ET OPT is adapted to up-front decide on an adaptive segmentation based on the input signal properties (PV). The encoders according to the invention are advantageous in that complex processes of a plurality of encodings prior to deciding upon an optimized encoding template OET can be avoided since the optimal encoding template OET is found based on input signal properties (PV).
摘要翻译：一种音频编码器，包括优化装置ET OPT，其适于基于输入音频信号IN的属性PV（例如以属性向量的形式）生成优化的编码模板OET。优化的编码模板OET正在针对预定的编码效率标准进行优化。编码意味着ENC根据优化的编码模板OET生成编码音频信号OUT。音频编码器可以包括适于基于输入信号IN产生一组输入信号特性PV的分析装置AN。在优选实施例中，优化装置ET OPT适于估计与编码模板相关联的结果失真。优化装置ET OPT还可以能够估计与编码模板相关联的比特率。在一个实施例中，优化装置ET OPT适于基于输入信号特性（PV）来优化对多个子编码器的比特率分布。在另一个实施例中，优化装置ET OPT适于根据输入信号特性（PV）预先决定自适应分段。根据本发明的编码器是有利的，因为可以避免在决定优化的编码模板OET之前的多个编码的复杂过程，因为基于输入信号属性（PV）找到最佳编码模板OET。

5. 发明授权

US09819358B2 Entropy encoding based on observed frequency 有权
公开(公告)号：US09819358B2
公开(公告)日：2017-11-14
申请号：US12838118
申请日：2010-07-16
申请人： Renat Vafin , Lazar Bivolarsky , Mattias Nilsson , Soren Vang Andersen
发明人： Renat Vafin , Lazar Bivolarsky , Mattias Nilsson , Soren Vang Andersen
IPC分类号： H03M7/40
CPC分类号： H03M7/40 , H03M7/4018
摘要： An encoder stage, and corresponding encoded bitstream and decoder. The encoder stage comprises: a variable length encoder for encoding an input signal; and a counter configured to dynamically detect an observed frequency at which different symbols are found to occur within each of a plurality of predetermined portions of the input signal, prior to the symbols of each respective portion being encoded by the variable length encoder. The variable length encoder is configured to encode the symbols of each portion using variable length coding performed in dependence on the observed frequencies detected within the respective portion of the input signal, to generate an encoded bitstream comprising the encoded symbols along with an additional element indicating information regarding the observed frequencies detected for each portion, and to output the encoded bitstream to at least one of a storage medium and a transmission medium for supply to a decoder.

6. 发明授权

US09036699B2 Video coding 有权
标题翻译：视频编码
公开(公告)号：US09036699B2
公开(公告)日：2015-05-19
申请号：US13274904
申请日：2011-10-17
申请人： Renat Vafin , Mattias Nilsson , Soren Vang Andersen
发明人： Renat Vafin , Mattias Nilsson , Soren Vang Andersen
IPC分类号： H04N7/26 , H04N19/194 , H04N19/176 , H04N19/147 , H04N19/103 , H04N19/156 , H04N19/19
CPC分类号： H04N19/194 , H04N19/103 , H04N19/147 , H04N19/156 , H04N19/176 , H04N19/19
摘要： A method of encoding a video stream comprising: for each of a plurality of first image portions to be encoded in an outgoing video stream, selecting a preferred one of a set of potential encoding modes using a first process comprising an estimation of distortion of the first image portion and a measure of bit rate required to encode the first image portion for each of the first image portion's potential encoding modes; encoding each of the first image portions of the outgoing stream using the respective selected encoding mode; for each of a plurality of second image portions of a video stream, applying a second process comprising at least an estimation of distortion of the second image portion; and using an output of the second process resulting from the second image portions to bias the first process in said selection of the encoding modes for the first portions.
摘要翻译：一种对视频流进行编码的方法，包括：对于要在输出视频流中进行编码的多个第一图像部分中的每一个，使用第一处理选择一组潜在编码模式中的优选模式，所述第一处理包括估计第一图像部分和对于第一图像部分的潜在编码模式中的每一个对第一图像部分进行编码所需的比特率的度量; 使用各自选择的编码模式对所述输出流的每个所述第一图像部分进行编码; 对于视频流的多个第二图像部分中的每一个，应用包括至少第二图像部分的失真估计的第二处理; 以及使用由所述第二图像部分产生的所述第二处理的输出来偏置所述第一部分的所述编码模式的所述选择中的所述第一处理。

7. 发明授权

US08948213B2 Jitter buffer 有权
标题翻译：抖动缓冲区
公开(公告)号：US08948213B2
公开(公告)日：2015-02-03
申请号：US13594638
申请日：2012-08-24
申请人： Renat Vafin , Mattias Nilsson , Soren Vang Andersen , Andrei Jefremov
发明人： Renat Vafin , Mattias Nilsson , Soren Vang Andersen , Andrei Jefremov
IPC分类号： H04J3/06 , H04L29/06 , H04L1/00
CPC分类号： H04L65/80 , H04L1/0009 , H04L1/0018
摘要： Method, transmitter and computer program product for transmitting data of a real-time communication event from the transmitter to a jitter buffer of a receiver. The method comprises jointly determining (i) at least one processing parameter describing how data is to be processed for transmission from the transmitter to the jitter buffer, and (ii) jitter buffer control information for indicating to the receiver how to control a state of the jitter buffer. The jitter buffer control information is transmitted to the receiver. Data is processed for transmission from the transmitter to the jitter buffer in accordance with the determined at least one processing parameter. The processed data is transmitted from the transmitter to the jitter buffer of the receiver.
摘要翻译：用于将实时通信事件的数据从发射机发射到接收机的抖动缓冲器的方法，发射机和计算机程序产品。该方法包括联合确定（i）描述如何处理数据以从发射机到抖动缓冲器的传输的至少一个处理参数，以及（ii）抖动缓冲器控制信息，用于向接收者指示如何控制抖动缓冲区。抖动缓冲器控制信息被发送到接收器。处理数据以根据所确定的至少一个处理参数从发送器发送到抖动缓冲器。经处理的数据从发送器发送到接收器的抖动缓冲器。

8. 发明授权

US08804836B2 Video coding 有权
标题翻译：视频编码
公开(公告)号：US08804836B2
公开(公告)日：2014-08-12
申请号：US13274739
申请日：2011-10-17
申请人： Mattias Nilsson , Renat Vafin , Soren Vang Andersen
发明人： Mattias Nilsson , Renat Vafin , Soren Vang Andersen
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N7/50 , H04N7/26
CPC分类号： H04N7/50 , H04N7/5086 , H04N19/103 , H04N19/107 , H04N19/166 , H04N19/176 , H04N19/61 , H04N19/89
摘要： A method comprising: for each target image portion to be encoded in a frame, selecting one of a set of encoding modes by optimizing a function comprising an estimate of distortion for the target image portion and a measure of bit rate required to encode the target image portion, encoding the target image portion into the encoded video stream using the selected mode. The encoded video stream is transmitted over a lossy channel. An error propagation distortion map is maintained, which comprises a plurality of error propagation distortion values mapping to respective frame partitions, the error propagation distortion values being based on previous encoding mode selections. The estimate of distortion used to select the encoding mode for each of the target image portions is based on a corresponding portion from the error propagation distortion map, and that corresponding portion is constrained to being co-located with the target image portion.
摘要翻译：一种方法，包括：对于要在帧中编码的每个目标图像部分，通过优化包括所述目标图像部分的失真估计的函数和对所述目标图像进行编码所需的比特率的度量来选择一组编码模式中的一个部分，使用所选择的模式将目标图像部分编码成编码视频流。编码的视频流通过有损的信道传输。维持误差传播失真图，其包括映射到各个帧分区的多个误差传播失真值，误差传播失真值基于先前的编码模式选择。用于选择每个目标图像部分的编码模式的失真的估计基于来自误差传播失真图的对应部分，并且该对应部分被约束为与目标图像部分共处。

9. 发明申请

US20130058395A1 Video Coding 有权
标题翻译：视频编码
公开(公告)号：US20130058395A1
公开(公告)日：2013-03-07
申请号：US13274865
申请日：2011-10-17
申请人： Mattias Nilsson , Renat Vafin , Soren Vang Andersen
发明人： Mattias Nilsson , Renat Vafin , Soren Vang Andersen
IPC分类号： H04N7/26
CPC分类号： H04N19/89 , H04N19/107 , H04N19/147 , H04N19/166 , H04N19/176
摘要： A method of performing a rate-distortion optimization process comprising selecting a preferred encoding mode by optimizing a function comprising an estimate of distortion for a target image portion and a measure of bit rate required to encode that portion. The estimate of distortion is based on source coding distortion and an estimate of error propagation distortion due to loss. The method further comprises transmitting the same encoded version of the video stream from the transmitting terminal to each of a plurality of receiving terminals over respective lossy channels, using the same rate-distortion optimization process in relation to each of the plurality of receiving terminals, making the same encoding mode selection per target image portion based on the same optimization of said function. The estimate of error propagation distortion comprises an aggregate estimate of error propagation distortion that would be experienced due to possible loss over the plurality of channels.
摘要翻译：一种执行速率失真优化处理的方法，包括通过优化包括目标图像部分的失真估计和对该部分进行编码所需的比特率的度量的函数来选择优选编码模式。失真的估计是基于源编码失真和由于损耗导致的误差传播失真的估计。该方法还包括使用与多个接收终端中的每一个相同的速率 - 失真优化处理，将相同的编码版本的视频流从发送终端发送到各个有损信道上的多个接收终端中的每一个，使得基于所述功能的相同优化，针对每个目标图像部分的相同编码模式选择。误差传播失真的估计包括由于多个信道上的可能损耗而将经历的误差传播失真的聚合估计。

10. 发明申请

US20120327998A1 Video Coding 有权
标题翻译：视频编码
公开(公告)号：US20120327998A1
公开(公告)日：2012-12-27
申请号：US13275046
申请日：2011-10-17
申请人： Mattias Nilsson , Renat Vafin , Soren Vang Andersen
发明人： Mattias Nilsson , Renat Vafin , Soren Vang Andersen
IPC分类号： H04N7/26
CPC分类号： H04N19/89 , H04N19/102 , H04N19/103 , H04N19/134 , H04N19/147 , H04N19/154 , H04N19/166 , H04N19/176 , H04N19/19
摘要： A method of encoding an outgoing video stream comprising a plurality of frames, each frame comprising a plurality of image portions, the method including for each target image portion to be encoded, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion and a measure of bit rate required to encode the target image portion; encoding the target image portion into the outgoing video stream using the selected encoding mode; and transmitting the encoded outgoing video stream over a lossy channel. The estimate of distortion comprises a first term representing source coding distortion, and a bias term representing an estimate of distortion that would be experienced due to loss over said channel. The bias term is determined based on a trained parameter trained based on a sample video stream.
摘要翻译：一种对包括多个帧的输出视频流进行编码的方法，每个帧包括多个图像部分，所述方法包括用于要编码的每个目标图像部分，通过优化包括以下各项的功能来选择一组编码模式中的优选的一个：失真的估计和编码目标图像部分所需的比特率的度量; 使用所选择的编码模式将目标图像部分编码为输出视频流; 以及通过有损的信道发送编码的输出视频流。失真的估计包括表示源编码失真的第一项和表示由于所述信道上的损失而将经历的失真估计的偏置项。偏置项是基于基于样本视频流训练的训练参数来确定的。

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