公开(公告)号：US06751203B1

公开(公告)日：2004-06-15

申请号：US09643165

申请日：2000-08-21

申请人： Waleed Eshmawy ,  Raziel Haimi-Cohen

发明人： Waleed Eshmawy ,  Raziel Haimi-Cohen

IPC分类号： H04B320

CPC分类号： H04B3/23

摘要： A side tone generator which adjusts gain to compensate for echo effects is described. The side tone generator includes a gain unit which receives a voice signal and applies a gain to the voice signal to produce a side tone, and a summing unit which adds the side tone to a speech decoder signal. The side tone generator also includes a side tone gain adapter to adjust the gain added by the gain unit. The side tone gain adapter computes a default gain which would be applied in the absence of echo and multiplies the default gain by an echo correction factor based on the prevailing level of echo in order to determine the gain to be applied. In another embodiment, an echo canceller employs a filter which receives a filter input based on a speech decoder signal and produces a filter output reflecting an estimate of echo present in the speech decoder signal. The echo canceller also includes an output summing unit which subtracts the filter output from a voice signal to produce an echo canceller output. The echo canceller also includes a feedback loop which employs feedback from the filter output to refine the filter input. The echo canceller also includes a filter adapter which produces updated coefficients for the filter based on the echo canceller output, the voice signal and the filter input.

摘要翻译： 描述了调整增益以补偿回波效应的侧音发生器。 侧音发生器包括增益单元，其接收语音信号并向声音信号施加增益以产生侧音，以及将侧音相加到语音解码器信号的求和单元。 侧音发生器还包括侧音增益适配器，用于调节增益单元所增加的增益。 侧音增益适配器计算将在没有回声的情况下应用的默认增益，并且基于当前的回波水平将默认增益乘以回波校正因子，以便确定要应用的增益。在另一实施例中， 回波消除器采用基于语音解码器信号接收滤波器输入的滤波器，并产生反映语音解码器信号中存在的回波估计的滤波器输出。 回波消除器还包括输出求和单元，其从语音信号中减去滤波器输出以产生回声消除器输出。 回波消除器还包括反馈回路，其采用来自滤波器输出的反馈来改善滤波器输入。 回波消除器还包括滤波器适配器，其基于回波消除器输出，语音信号和滤波器输入产生用于滤波器的更新系数。

公开(公告)号：US20130121422A1

公开(公告)日：2013-05-16

申请号：US13296482

申请日：2011-11-15

申请人： Hong Jiang ,  Raziel Haimi-Cohen ,  Paul A. Wilford

发明人： Hong Jiang ,  Raziel Haimi-Cohen ,  Paul A. Wilford

IPC分类号： H04N7/26

CPC分类号： G06T7/254 ,  G06T2207/10016 ,  G06T2207/30232 ,  H04N19/60 ,  H04N19/63

摘要： Embodiments relate to an apparatus and method for encoding/decoding data for motion detection in a communication system. The method for encoding data includes receiving, by an encoder, video data including a plurality of frames. Each frame is represented by a pixel vector including a number of pixel values. The method further includes generating, by the encoder, sets of measurements representing the plurality of frames. Each set of measurements represents a different frame of the plurality of frames. The generating step generates the sets of measurements by applying sensing matrices to the pixel vectors, and a same sensing matrix is used for at least two sets of measurements.

摘要翻译： 实施例涉及用于在通信系统中对运动检测的数据进行编码/解码的装置和方法。 编码数据的方法包括由编码器接收包括多个帧的视频数据。 每个帧由包括多个像素值的像素矢量表示。 该方法还包括由编码器生成表示多个帧的测量集合。 每组测量表示多个帧的不同帧。 生成步骤通过将感测矩阵应用于像素矢量来生成测量集合，并且对于至少两组测量使用相同的感测矩阵。

公开(公告)号：US20090052601A1

公开(公告)日：2009-02-26

申请号：US12262239

申请日：2008-10-31

申请人： Christof Faller ,  Raziel Haimi-Cohen

发明人： Christof Faller ,  Raziel Haimi-Cohen

IPC分类号： H04L7/00

CPC分类号： G10L19/167 ,  H04H60/27 ,  H04H2201/20 ,  H04J3/0632 ,  H04J3/1688 ,  H04N19/152

摘要： A method and apparatus are disclosed for controlling a buffer in a digital audio broadcasting (DAB) communication system. The decoder buffer level limits are specified in terms of a maximum number of encoded frames (or duration). The transmitter can predict the number of encoded frames, Fpred, in the decoder buffer and transmit the value, Fpred, to the receiver with the audio data. If the transmitter determines that the decoder buffer level is becoming too high, the frames being generated by the encoder are too small and additional bits are allocated to each frame for each of the N programs. Likewise, if the transmitter determines that the decoder buffer level is becoming too low, the frames being generated by the encoder are too big and fewer bits are allocated to each frame for each of the N programs. The transmitted predicted buffer level, Fpred, can also be employed to (i) determine when the decoder should commence decoding frames; and (ii) synchronize the transmitter and the receiver. The receiver fills the decoder buffer until Fpred frames are received before commencing decoding frames when the decoder first starts up or possibly when a new audio program is selected. The transmitter and receiver clocks may be synchronized by adjusting the clock at the receiver by using a feedback loop that compares the actual level of the decoder buffer to the predicted value, Fpred, received from the transmitter (a higher number of encoded frames in the buffer indicates that the clock of the receiver is too slow and should be increased, and a lower number of encoded frames in the buffer indicates that the clock of the receiver is too fast and needs to be slowed down).

摘要翻译： 公开了一种用于控制数字音频广播（DAB）通信系统中的缓冲器的方法和装置。 解码器缓冲器电平限制是根据最大编码帧数（或持续时间）来指定的。 发射机可以在解码器缓冲器中预测编码帧数目Fpred，并将该值Fpred传送到具有音频数据的接收机。 如果发射机确定解码器缓冲器电平变得太高，则由编码器产生的帧太小，并且对于每个N个节目的每个帧分配附加比特。 类似地，如果发射机确定解码器缓冲器电平变得太低，则由编码器生成的帧太大，并且对于N个节目中的每个节目，每个帧分配更少的比特。 发送的预测缓冲器电平Fpred也可以用于（i）确定解码器何时开始解码帧; 和（ii）同步发射机和接收机。 接收器填充解码器缓冲器，直到当解码器首次启动或者当选择新的音频节目时才开始解码帧之前接收到Fpred帧。 发射机和接收机时钟可以通过使用将解码器缓冲器的实际电平与从发送器接收的预测值Fpred（缓冲器中更高数量的编码帧）进行比较的反馈回路来调整接收器处的时钟来同步 表示接收机的时钟太慢，应该增加，缓冲区中编码帧的数量越少表示接收机的时钟速度太快，需要减慢）。

公开(公告)号：US06359971B1

公开(公告)日：2002-03-19

申请号：US08524106

申请日：1995-08-21

申请人： Raziel Haimi-Cohen ,  Adam Victor Reed

发明人： Raziel Haimi-Cohen ,  Adam Victor Reed

IPC分类号： H04M342

CPC分类号： H04M1/271 ,  H04M3/42204 ,  H04M3/4931 ,  H04M2201/40

摘要： A speech recognizer system for use with a telecommunication network wherein an input signal generated onto the network from a first terminal is directed to a speech recognizer for estimating the verbal content of the input signal. The speech recognizer or associated equipment then directs an estimate of the verbal content as an output signal back to the first terminal, the estimate including one or more approximations of the verbal content of the input signal. At the first terminal the user then confirms a correct estimate, or selects from a plurality of approximations, the verbal content of the input signal.

摘要翻译： 一种与电信网络一起使用的语音识别器系统，其中从第一终端产生到网络上的输入信号被引导到用于估计输入信号的语言内容的语音识别器。 语音识别器或相关联的设备然后将语音内容的估计作为输出信号引导回第一终端，该估计包括输入信号的语言内容的一个或多个近似值。 在第一终端，用户然后确认正确的估计，或者从多个近似中选择输入信号的口头内容。

公开(公告)号：US09374231B2

公开(公告)日：2016-06-21

申请号：US12728802

申请日：2010-03-22

申请人： Raziel Haimi-Cohen ,  John Hearn

发明人： Raziel Haimi-Cohen ,  John Hearn

IPC分类号： H04L12/18 ,  H04L29/06 ,  H04L12/761 ,  H04L12/741

CPC分类号： H04L12/18 ,  H04L12/1836 ,  H04L12/185 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/74 ,  H04L65/4076 ,  H04L65/4084

摘要： A controller in a video headend or other transmission element of a signal distribution system is operative to detect a condition in which unicast transmissions of a given content stream to a plurality of terminals meet a specified threshold. The controller starts a multicast transmission of the given content stream in response to the detected condition, and transitions at least one of the terminals to the multicast transmission. In one embodiment, the controller identifies at least one of the terminals as a terminal that will receive the multicast transmission of the given content stream in place of its unicast transmission prior to one or more of the other terminals receiving the multicast transmission. The controller stops the unicast transmission to the identified terminal if that unicast transmission has already been started, starts the multicast transmission, switches the identified terminal to the multicast transmission, and subsequently transitions one or more of the other terminals to the multicast transmission. The identified terminal may be a leading terminal or a trailing terminal.

摘要翻译： 信号分配系统的视频头端或其他传输元件中的控制器可操作以检测给定多个终端的给定内容流的单播传输满足指定阈值的条件。 控制器响应于检测到的条件启动给定内容流的多播传输，并且将至少一个终端转换到多播传输。 在一个实施例中，控制器将终端中的至少一个识别为在接收多播传输的一个或多个其他终端之前将接收给定内容流的多播传输来代替其单播传输的终端。 如果单播传输已经开始，则控制器停止向所识别的终端的单播传输，开始组播传输，将所识别的终端切换到多播传输，并且随后将一个或多个其他终端转换成多播传输。 所识别的终端可以是前导终端或尾随终端。

公开(公告)号：US08724763B2

公开(公告)日：2014-05-13

申请号：US12262239

申请日：2008-10-31

申请人： Christof Faller ,  Raziel Haimi-Cohen

发明人： Christof Faller ,  Raziel Haimi-Cohen

IPC分类号： H04L7/00

CPC分类号： G10L19/167 ,  H04H60/27 ,  H04H2201/20 ,  H04J3/0632 ,  H04J3/1688 ,  H04N19/152

摘要： A method and apparatus are disclosed for controlling a buffer in a digital audio broadcasting (DAB) communication system. The transmitter predicts the number of encoded frames, Fpred, in the buffer having a limited level and transmits the value, Fpred, to the receiver with the frame. If the transmitter determines that the decoder buffer level is high, the frames being generated by the encoder are small and additional bits are allocated to each frame for each of the N programs. Likewise, if the transmitter determines that the decoder buffer level is becoming low, the frames being generated by the encoder are big and fewer bits are allocated to each frame for each of the N programs. The transmitted predicted buffer level, Fpred, can also be employed to (i) determine when the decoder should commence decoding frames; and (ii) synchronize the transmitter and the receiver clock using feedback depending on the compared level of the decoder to the actual level to Fpred.

摘要翻译： 公开了一种用于控制数字音频广播（DAB）通信系统中的缓冲器的方法和装置。 发射机预测具有有限电平的缓冲器中的编码帧数目Fpred，并将该值Fpred发送给具有帧的接收机。 如果发射机确定解码器缓冲器电平为高，则由编码器产生的帧较小，并且对于N个节目中的每个节目的每个帧分配附加比特。 类似地，如果发射机确定解码器缓冲器电平变低，则由编码器产生的帧较大，并且对于N个节目中的每个节目，每个帧分配较少的比特。 发送的预测缓冲器电平Fpred也可以用于（i）确定解码器何时开始解码帧; 和（ii）使用反馈取决于解码器的比较水平与Fpred的实际水平来同步发射机和接收机时钟。

公开(公告)号：US07460629B2

公开(公告)日：2008-12-02

申请号：US09895926

申请日：2001-06-29

申请人： Christof Faller ,  Raziel Haimi-Cohen

发明人： Christof Faller ,  Raziel Haimi-Cohen

IPC分类号： H04L7/00

CPC分类号： G10L19/167 ,  H04H60/27 ,  H04H2201/20 ,  H04J3/0632 ,  H04J3/1688 ,  H04N19/152

摘要： A method and apparatus are disclosed for controlling a buffer in a digital audio broadcasting (DAB) communication system. The decoder buffer level limits are specified in terms of a maximum number of encoded frames (or duration). The transmitter can predict the number of encoded frames, Fpred, in the decoder buffer and transmit the value, Fpred, to the receiver with the audio data. If the transmitter determines that the decoder buffer level is becoming too high, the frames being generated by the encoder are too small and additional bits are allocated to each frame for each of the N programs. Likewise, if the transmitter determines that the decoder buffer level is becoming too low, the frames being generated by the encoder are too big and fewer bits are allocated to each frame for each of the N programs. The transmitted predicted buffer level, Fpred, can also be employed to (i) determine when the decoder should commence decoding frames; and (ii) synchronize the transmitter and the receiver. The receiver fills the decoder buffer until Fpred frames are received before commencing decoding frames when the decoder first starts up or possibly when a new audio program is selected. The transmitter and receiver clocks may be synchronized by adjusting the clock at the receiver by using a feedback loop that compares the actual level of the decoder buffer to the predicted value, Fpred, received from the transmitter (a higher number of encoded frames in the buffer indicates that the clock of the receiver is too slow and should be increased, and a lower number of encoded frames in the buffer indicates that the clock of the receiver is too fast and needs to be slowed down).

摘要翻译： 公开了一种用于控制数字音频广播（DAB）通信系统中的缓冲器的方法和装置。 解码器缓冲器电平限制是根据最大编码帧数（或持续时间）来指定的。 发射机可以在解码器缓冲器中预测编码帧数目Fpred，并将该值Fpred传送到具有音频数据的接收机。 如果发射机确定解码器缓冲器电平变得太高，则由编码器产生的帧太小，并且对于每个N个节目的每个帧分配附加比特。 类似地，如果发射机确定解码器缓冲器电平变得太低，则由编码器生成的帧太大，并且对于N个节目中的每个节目，每个帧分配更少的比特。 发送的预测缓冲器电平Fpred也可以用于（i）确定解码器何时开始解码帧; 和（ii）同步发射机和接收机。 接收器填充解码器缓冲器，直到当解码器首次启动或者当选择新的音频节目时才开始解码帧之前接收到Fpred帧。 发射机和接收机时钟可以通过使用将解码器缓冲器的实际电平与从发送器接收的预测值Fpred（缓冲器中更高数量的编码帧）进行比较的反馈回路来调整接收器处的时钟来同步 表示接收机的时钟太慢，应该增加，缓冲区中编码帧的数量越少表示接收机的时钟速度太快，需要减慢）。

公开(公告)号：US06233320B1

公开(公告)日：2001-05-15

申请号：US09337777

申请日：1998-06-22

申请人： Raziel Haimi-Cohen

发明人： Raziel Haimi-Cohen

IPC分类号： H04M1110

CPC分类号： H04M1/656 ,  H04M1/72519

摘要： A wireless telephone with record and playback capability is disclosed. The telephone has an operation module, which transmits near-end signals and receives far-end signals, and a record module which writes transmission packets formed from the near-end signals in a first location of a memory and reception packets formed from the far-end signals in a second location of the memory. A playback module reads the transmission packets and the reception packets from the memory, and decodes the transmission packets into transmission speech samples and the reception packets into reception speech samples using transmission and reception decoders, respectively. Further, the playback module has a mixer to mix the transmission speech samples with the reception speech samples to form mixed speech signals for playback on a speaker. The playback module also includes a voice activity detector which outputs a skip signal to the transmission and reception decoders in response to detection of either voice in the transmission speech samples or silence in the reception speech samples. In response to the skip signal, the transmission and reception decoders discard a current transmission packet and a current receive packet and read a next transmission packet and a next reception packet from the memory.

摘要翻译： 公开了具有记录和播放能力的无线电话。 电话具有发送近端信号并接收远端信号的操作模块，以及记录模块，其将从近端信号形成的发送分组写入到存储器的第一位置，以及由远端信号形成的接收分组， 结束信号在存储器的第二位置。 播放模块从存储器读取发送分组和接收分组，并且分别使用发送和接收解码器将传输分组解码为传输语音样本和接收分组到接收语音样本。 此外，重放模块具有混合器以将发送语音样本与接收语音样本混合，以形成用于在扬声器上回放的混合语音信号。 回放模块还包括语音活动检测器，其响应于发送语音样本中的任一语音的检测或接收语音样本中的静音而向发送和接收解码器输出跳过信号。 响应于跳过信号，发送和接收解码器丢弃当前传输分组和当前接收分组，并从存储器读取下一个传输分组和下一个接收分组。

公开(公告)号：US08806551B2

公开(公告)日：2014-08-12

申请号：US12327400

申请日：2008-12-03

申请人： Raziel Haimi-Cohen

发明人： Raziel Haimi-Cohen

IPC分类号： H04N7/173 ,  H04L1/18

CPC分类号： H04N21/6437 ,  H04N21/234327 ,  H04N21/2368 ,  H04N21/4341 ,  H04N21/44004 ,  H04N21/47202 ,  H04N21/6125 ,  H04N21/6375

摘要： A method and system for improved error resiliency in Internet protocol Television (IPTV) are provided. Received media stream is encoded in a real-time protocol. The RTP media stream is then reordered in a homogeneous arrangement (e.g., video packets together, audio packets together) such that each RTP packet, which contains video contains data from a single video frame. Furthermore, each RTP packet contains a RTP header extension, which specifies the priority of the data. Audio frame and intra-coded frames (I-frames) are marked as highest priority frames, predictably coded frames (P-frames) are marked as high priority frames, bidirectionally coded frames (B-frames) are marked as lower priority frames with anything else occupying the lowest priority. The media stream is forwarded to the plurality of users, in accordance with the priority of each packet. A subscriber's device requests retransmission of any missing packets.

摘要翻译： 提供了一种用于提高互联网协议电视（IPTV）中的错误弹性的方法和系统。 接收到的媒体流是以实时协议编码的。 RTP媒体流然后以均匀的排列（例如，视频分组在一起，音频分组在一起）重新排序，使得包含视频的每个RTP分组包含来自单个视频帧的数据。 此外，每个RTP分组包含RTP头部扩展，其指定数据的优先级。 音频帧和帧内编码帧（I帧）被标记为最高优先级帧，可预测编码帧（P帧）被标记为高优先级帧，双向编码帧（B帧）被标记为具有任何内容的较低优先级帧 否则占据最低优先级。 媒体流根据每个分组的优先级被转发给多个用户。 订户的设备请求重传任何丢失的数据包。

公开(公告)号：US20140181061A1

公开(公告)日：2014-06-26

申请号：US13724090

申请日：2012-12-21

申请人： Hong Jiang ,  Raziel Haimi-Cohen ,  Paul A. Wilford

发明人： Hong Jiang ,  Raziel Haimi-Cohen ,  Paul A. Wilford

IPC分类号： G06F17/30

CPC分类号： G06F16/13

摘要： An illustrative data access management system includes a plurality of data storage devices and at least one data manager device configured to arrange information stored by the data storage devices. The data manager device segments compressive measurements of data into a plurality of subsets. Each of the subsets contains measurement information for facilitating a reconstruction of at least an approximation of the data. The data manager device provides at least a first one of the subsets to a first one of the data storage devices and at least a second one of the subsets to a second one of the data storage devices. One of the data storage devices may be selected, based on at least one criterion, for providing a user access to the at least one subset stored by the selected data storage device.

摘要翻译： 说明性的数据访问管理系统包括多个数据存储设备和被配置为布置数据存储设备存储的信息的至少一个数据管理器设备。 数据管理器装置将数据的压缩测量分段成多个子集。 每个子集包含用于促进至少重构数据近似的测量信息。 所述数据管理器装置将所述子集中的至少第一个提供给所述数据存储装置中的第一个和所述子集中的至少第二个到所述数据存储装置中的第二个。 可以基于至少一个标准来选择数据存储设备中的一个，以提供用户对由所选择的数据存储设备存储的至少一个子集的访问。