公开(公告)号：EP2135240A2

公开(公告)日：2009-12-23

申请号：EP07872094.3

申请日：2007-12-20

申请人： Skype Limited

发明人： NILSSON, Mattias ,  LINDBLOM, Jonas ,  VAFIN, Renat ,  ANDERSEN, Soren, Vang

IPC分类号： G10L19/00

CPC分类号： G10L19/26 ,  G10L19/005 ,  G10L21/0364

摘要： A system for enhancing a signal regenerated from an encoded audio signal. The system comprises a decoder arranged to receive the encoded audio signal and produce a decoded audio signal, a feature extraction means arranged to receive at least one of the decoded and encoded audio signal and extract at least one feature from at least one of the decoded and encoded audio signal, a mapping means arranged to map the at least one feature to an enhancement signal and operable to generate and output the enhancement signal, whereby the enhancement signal has a frequency band that is within the decoded audio signal frequency band, and a mixing means arranged to receive the decoded audio signal and the enhancement signal and mix the enhancement signal with the decoded audio signal.

公开(公告)号：EP2374247A1

公开(公告)日：2011-10-12

申请号：EP09793510.0

申请日：2009-12-10

申请人： Skype Limited

发明人： ANDERSEN, Soren, Vang ,  RODBRO, Christoffer, Asgaard ,  VOS, Koen, Bernard

IPC分类号： H04L12/56 ,  H04L12/26

CPC分类号： H04L47/10 ,  H04L43/0852 ,  H04L43/0876 ,  H04L43/106

摘要： The invention provides a method of controlling transmission of packets from a transmitter to a receiver via a channel, and a corresponding transmitter and receiver. The method comprises: transmitting packets from a queue, each packet having a packet size (9) based on data in the packet; determining a transmission time for each packet (Tx), based on a transmission clock; determining a reception time of each packet (Rx), based on a reception clock; supplying to an estimation function (14) successive sets of observations including in each set transmission time (Tx), reception time (Rx) and packet size (S), the estimate function being arranged to provide an estimate of bandwidth (BW
UP ) for the channel using the relationship between the bandwidth (BW
UP ), the amount of data in the queue (N), packet size (S) and the delay between transmitting successive packets from the queue; and using the estimated bandwidth to control transmission of packets.

公开(公告)号：EP2374247B1

公开(公告)日：2015-10-28

申请号：EP09793510.0

申请日：2009-12-10

申请人： Skype

发明人： ANDERSEN, Soren, Vang ,  RODBRO, Christoffer, Asgaard ,  VOS, Koen, Bernard

IPC分类号： H04L12/26 ,  H04L12/70

CPC分类号： H04L47/10 ,  H04L43/0852 ,  H04L43/0876 ,  H04L43/106

公开(公告)号：EP2520095A2

公开(公告)日：2012-11-07

申请号：EP11705855.2

申请日：2011-02-18

申请人： Skype

发明人： BIVOLARSKY, Lazar ,  NILSSON, Mattias ,  VAFIN, Renat ,  ANDERSEN, Soren, Vang

IPC分类号： H04N7/32

CPC分类号： H04N19/94 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/547

摘要： A method of compressing a video signal. The method comprises: for each of a plurality of image portions, transforming from a spatial domain representation into a transform domain representation; and for each of a plurality of target image portions to be encoded, determining a respective reference portion, determining a prediction of the target image portion based on the reference portion, and encoding the target image portion based on the prediction. The prediction comprises predicting a non- lateral motion of the target image portion relative to the reference portion based on processing of their transform domain coefficients. The encoding comprises generating an encoded bitstream comprising information about the non-lateral motion for use by a decoder.

摘要翻译： 一种压缩视频信号的方法。 该方法包括：对于多个图像部分中的每一个，从空间域表示转换为变换域表示; 并且对于要被编码的多个目标图像部分中的每一个，确定相应的参考部分，基于参考部分确定目标图像部分的预测，以及基于预测编码目标图像部分。 预测包括基于对它们的变换域系数的处理来预测目标图像部分相对于参考部分的非横向运动。 该编码包括生成包括关于供解码器使用的非横向运动的信息的编码比特流。