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41. 发明公开

EP2372699A1 Distribution-constrained quantization 有权转让
标题翻译： Kodierung von Tone oder Videoabtastwerten unter Verwendung von mehreren Quantisierern
公开(公告)号：EP2372699A1
公开(公告)日：2011-10-05
申请号：EP10155236.2
申请日：2010-03-02
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Li, Minyue , Kleijn, Willem Bastiaan
IPC分类号： G10L19/00 , H04N7/26
CPC分类号： G10L19/00 , G10L19/035 , H04N19/126 , H04N19/147 , H04N19/60 , H04N19/94
摘要： The invention relates to improved signal quantization and inter alia addresses the problem of reducing artefacts in the reconstructed signal that arise from unintended statistical correlation between quantization errors and signal values. In one aspect, the invention provides an encoder characterized by the fact that several quantizers (determined by a partition of quantization cells and reconstruction points) are applied, one at a time, in an alternating fashion. In another aspect, the invention provides a decoder characterized by a corresponding alternation of quantizers, so that quantized samples are reconstructed by a corresponding quantizer on the decoder side. The invention further provides a method of manufacturing an encoder, decoder or quantizer according to the invention, which includes designing an ensemble of quantizers.
摘要翻译：本发明涉及改进的信号量化，并且尤其涉及减少由量化误差和信号值之间的非预期的统计相关引起的重建信号中的伪像的问题。一方面，本发明提供了一种编码器，其特征在于以交替方式一个一个地施加几个量化器（由量化单元和重构点的分区确定）的事实。在另一方面，本发明提供了一种解码器，其特征在于相应的量化器交替，使得量化样本由解码器侧的相应量化器重构。本发明还提供了一种制造根据本发明的编码器，解码器或量化器的方法，其包括设计一个量化器组合。

42. 发明授权

EP1855455B1 Audio mixing 有权转让
标题翻译：音频混合
公开(公告)号：EP1855455B1
公开(公告)日：2011-10-05
申请号：EP06113826.9
申请日：2006-05-11
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Enbom, Niklas , Hagen, Roar
IPC分类号： H04M3/56 , H04R3/00
CPC分类号： H04R3/005 , H04M3/563 , H04M3/569 , H04M2201/18

43. 发明公开

EP2328091A2 Network media playout 有权转让
标题翻译： Netzwerk媒体播放
公开(公告)号：EP2328091A2
公开(公告)日：2011-06-01
申请号：EP11156611.3
申请日：2002-10-03
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Enbom Nicklas , Galschiodt, Fredrik
IPC分类号： G06F13/00 , H04L12/26 , H04L12/64
CPC分类号： H04L65/604 , H04L12/6418 , H04L29/06 , H04L29/06027 , H04L65/80 , H04L2012/6472 , H04L2012/6481 , H04L2012/6489
摘要： A method and a device for processing a media stream received as a plurality of packets from a packet communication network are provided. The received packets are stored in a first buffer. According to the method, a fill level of a second buffer is compared with a threshold and, if the fill level is below the threshold, a portion of the media stream is retrieved from the first buffer. The retrieved portion is then loaded in the second buffer.
摘要翻译：提供了一种用于处理从分组通信网络作为多个分组接收的媒体流的方法和设备。所接收的分组被存储在第一缓冲器中。根据该方法，将第二缓冲器的填充级别与阈值进行比较，并且如果填充级别低于阈值，则从第一缓冲器检索一部分媒体流。然后将检索到的部分加载到第二缓冲器中。

44. 发明授权

EP2197190B1 Delay estimator 有权转让
标题翻译：延迟估计装置
公开(公告)号：EP2197190B1
公开(公告)日：2011-05-04
申请号：EP08171468.5
申请日：2008-12-12
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Kleijn, Willem Bastiaan
IPC分类号： H04M9/08 , H04B3/23
CPC分类号： H04M9/082 , H04B3/46

45. 发明公开

EP2262228A1 Detection and supression of flicker in a sequence of images 无效转让
标题翻译： Erkennung undUnterdrückenvon Flackern在einer Bildabfolge
公开(公告)号：EP2262228A1
公开(公告)日：2010-12-15
申请号：EP09162228.2
申请日：2009-06-09
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Kleijn, Willem Bastiaan , Völcker, Björn
IPC分类号： H04N5/44 , H04N5/235
CPC分类号： H04N5/2357 , H04N5/144 , H04N7/0132
摘要： The invention relates to a method, device and computer-program product for detection of undesired temporal variations (flicker) in a sequence of video frames. In one embodiment, frame-wise luminance means are compared with a reference level and the crossing frequency is compared with expected variation frequencies, such as frequencies associated with an illumination frequency through aliasing. The crossings count can be refined by introducing a latency zone around the reference level.
In case of a positive detection of an undesired temporal variation, there is further provided a correction method, device and computer-program product using cumulated distribution functions. The visual detriment of flicker-induced saturation of pixels is alleviated either by brightening non-saturated pixels or by replacing the saturated pixels by randomly sampled values in accordance with a reference cumulated distribution function. The invention provides embodiments suitable for real-time processing of streamed video sequences.
摘要翻译：本发明涉及用于检测视频帧序列中不需要的时间变化（闪烁）的方法，设备和计算机程序产品。在一个实施例中，将逐帧亮度装置与参考电平进行比较，并将交叉频率与期望的变化频率（例如通过混叠的照明频率相关联的频率）进行比较。可以通过在参考级别周围引入延迟区域来改进交叉点计数。在不期望的时间变化的正检测的情况下，还提供了使用累积分布函数的校正方法，装置和计算机程序产品。通过增加非饱和像素或根据参考累积分布函数通过随机采样值替换饱和像素来减轻像素的闪烁引起的饱和度的视觉上的损害。本发明提供适用于流式视频序列的实时处理的实施例。

46. 发明授权

EP2023339B1 A low-delay audio coder 有权转让
标题翻译：音频解码低延迟
公开(公告)号：EP2023339B1
公开(公告)日：2010-08-25
申请号：EP07113397.9
申请日：2007-07-30
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Kleijn, Willem Bastiaan , Minyue, Li
IPC分类号： G10L19/00
CPC分类号： G10L19/0017 , H04R25/552 , H04R2225/55
摘要： The present invention relates to methods and devices for encoding and decoding digital audio signals, e.g. a speech signal. An audio coder and a decoder are provided wherein a modeller adds a first distribution model obtained from model parameters of past segments of the digital audio signal and a fixed distribution model, each of the models being multiplied by a weighting coefficient, for obtaining a combined distribution model. The weighting coefficients are selected to minimize a code length of a current segment of the digital audio signal. As the combined distribution model is a sum of several distribution models, wherein at least some of the models is based on the model parameters, flexibility is introduced in the signal model used to encode the digital audio signal. Thus, an audio coder and decoder providing a low bit rate in average, low bit rate variations and low error propagation are provided.

47. 发明公开

EP2139235A1 Video selector 有权转让
标题翻译： Videoauswahlvorrichtung
公开(公告)号：EP2139235A1
公开(公告)日：2009-12-30
申请号：EP08164163.1
申请日：2008-09-11
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Ellner, Henrik
IPC分类号： H04N7/15
CPC分类号： H04N7/15 , H04N7/147 , H04N7/152
摘要： The invention provides a method for selecting input video signals in a video conference for transmission. The method bases its selection decision on the momentary voice activity of the participants, but does so while observing constraints aimed at:
• improving stability of the image seen by each participant;
• decreasing flickering of the image;
• choosing comfortable and helpful swapping times between different image configurations; and
• reflecting the importance which is attributed to persons having a higher past average activity in a natural conference.
In one embodiment of the invention, the set of constraints includes an override, by which one or more participants can be selected irrespectively of the selection decision.
In accordance with a second aspect of the invention, there is provided video selector hardware comprising units to perform the steps of the method.
摘要翻译：本发明提供了一种在视频会议中选择输入视频信号进行传输的方法。该方法基于对参与者的瞬间语音活动的选择决定，但是遵守以下限制： - 提高每个参与者看到的图像的稳定性; ¢减少图像的闪烁; ¢选择不同图像配置之间舒适有用的交换时间; 反映了自然会议过去平均活动人数的重要性。在本发明的一个实施例中，所述约束集合包括覆盖，通过该覆盖可以选择与所述选择决定无关的一个或多个参与者。根据本发明的第二方面，提供了包括用于执行该方法的步骤的单元的视频选择器硬件。

48. 发明授权

EP1500210B1 ECHO CANCELLATION 有权转让
标题翻译：回声消除
公开(公告)号：EP1500210B1
公开(公告)日：2008-12-24
申请号：EP03723565.2
申请日：2003-04-25
申请人： Global IP Solutions, Inc. , Global IP Solutions (GIPS) AB
发明人： HÄNDEL, Peter , BERGENHEIM, Jon , REMLE, Susanne
IPC分类号： H04B3/23
CPC分类号： H04B3/23
摘要： The present invention relates to a cancellation of echoes in telecommunications systems, more specifically it relates to adaptive alignment of a linear filter (500) used for echo cancellation. According to the invention, it is continuously determined, by means of control logic (520), if a reflection replica delay included in an echo replica signal (110), which delay is provided by a signal buffer (510), should be attempted to be increased or not. Similarly, it is continuously determined if the reflection replica delay should be attempted to be decreased or not. In this way it is possible to provide a delay of the reflection replica which corresponds to the pure delay of a corresponding reflection included in an echo signal (120) received over an echo path. The invention is advantageous since the filter (500) will continuously and quickly adapt to changes in the echo path delay by continuously increasing or decreasing, in an incremental and smooth manner, a present replica delay.

49. 发明公开

EP1855455A1 Audio mixing 有权转让
标题翻译：混音
公开(公告)号：EP1855455A1
公开(公告)日：2007-11-14
申请号：EP06113826.9
申请日：2006-05-11
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Enbom, Niklas , Hagen, Roar
IPC分类号： H04M3/56 , H04R3/00
CPC分类号： H04R3/005 , H04M3/563 , H04M3/569 , H04M2201/18
摘要： The invention relates to a method and an apparatus for mixing audio signals. The invention is based on the idea to base selection of what audio channels to mix on the dynamic behaviour of the audio channels in terms of whether they are active or not, rather than basing the selection on quantative measures of the audio channels. According to the invention, a set of audio channels are arranged in a mixing stack and a mixed audio signal is produced from the topmost channels above a predetermined threshold level in the stack. Whenever a channel becomes active, it is placed at the top of the stack.

50. 发明公开

EP2367343A1 Audio mixing 有权转让
标题翻译： Tonmischung
公开(公告)号：EP2367343A1
公开(公告)日：2011-09-21
申请号：EP11169701.7
申请日：2006-05-11
申请人： Global IP Solutions, Inc. , Global IP Solutions (GIPS) AB
发明人： Enbom, Niklas , Hagen, Roar
IPC分类号： H04M3/56 , H04R3/00
CPC分类号： H04R3/005 , H04M3/563 , H04M3/569 , H04M2201/18
摘要： The invention relates to a method and an apparatus for mixing audio signals. The invention is based on the idea to base selection of what audio channels to mix on the dynamic behaviour of the audio channels in terms of whether they are active or not, rather than basing the selection on quantative measures of the audio channels.
摘要翻译：本发明涉及一种用于混合音频信号的方法和装置。本发明基于这样的想法，即基于音频信道的动态行为来选择哪些音频信道是否被激活，而不是基于对音频信道的量化度量的选择。

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