公开(公告)号：US07924929B2

公开(公告)日：2011-04-12

申请号：US10536645

申请日：2003-11-26

申请人： Ramanathan Meenakshisundaram ,  Murali Mani

发明人： Ramanathan Meenakshisundaram ,  Murali Mani

IPC分类号： H04B1/66

CPC分类号： H04N21/4305 ,  G11B27/10 ,  H04N7/52 ,  H04N17/004 ,  H04N19/61 ,  H04N19/70 ,  H04N21/4307 ,  H04N21/4341

摘要： A method of testing audio/video synchronization comprising calculating a frequency of a device used to encode a digital stream based on program clock references calculating first time differences between audio decoding time stamps and actual audio decoding times; calculating second time differences between audio presentation time stamps and actual audio presentation times; calculating third time differences between video decoding time stamps and 4 actual video decoding times; and calculating fourth time differences between video presentation time stamps and actual video presentation times.

摘要翻译： 一种测试音频/视频同步的方法，包括基于计算音频解码时间戳和实际音频解码时间之间的第一时间差的程序时钟参考来计算用于编码数字流的设备的频率; 计算音频呈现时间戳与实际音频呈现时间之间的第二时间差; 计算视频解码时间戳与4个实际视频解码时间之间的第三时差; 并计算视频呈现时间戳与实际的视频呈现时间之间的第四时差。

公开(公告)号：US07916815B2

公开(公告)日：2011-03-29

申请号：US11685196

申请日：2007-03-12

申请人： Thomas Foxcroft ,  Douglas Roger Pulley

发明人： Thomas Foxcroft ,  Douglas Roger Pulley

IPC分类号： H04L27/06

CPC分类号： H04N21/6162 ,  H04L27/2662 ,  H04L27/2666 ,  H04N21/2383 ,  H04N21/4382

摘要： A method and apparatus for a multicarrier receiver circuit with guard interval size detection described. The invention allows the FFT size and guard interval size to be detected quickly even in the presence of relatively noisy input signals. The method is robust in noise environments, and also sufficiently robust to process signals having severe multipath and/or co-channel interference. Moreover, the method is of low complexity, and can be implemented in a VLSI circuit.

摘要翻译： 一种用于具有保护间隔尺寸检测的多载波接收机电路的方法和装置。 本发明允许即使在存在相对嘈杂的输入信号的情况下也能快速地检测FFT大小和保护间隔大小。 该方法在噪声环境中是鲁棒的，并且对于处理具有严重的多径和/或同信道干扰的信号也是足够鲁棒的。 此外，该方法复杂度低，可以在VLSI电路中实现。

公开(公告)号：US07881500B2

公开(公告)日：2011-02-01

申请号：US11570800

申请日：2005-06-21

申请人： Gerard De Haan ,  Calina Ciuhu

发明人： Gerard De Haan ,  Calina Ciuhu

IPC分类号： G06K9/00

CPC分类号： H04N19/521 ,  H04N19/112 ,  H04N19/51

摘要： The invention relates to a method for providing a motion parameter set and/or a picture repetition pattern from an input video signal, in particular for de-interlacing a video signal with using a candidate motion parameter set weighted with a picture repetition pattern value for calculating a motion compensated pixel from a pixel value of a first image. To provide motion compensation which accounts for field repetition patterns, minimizing an error criterion between at least one pixel value of a second image and at least the motion compensated pixel value by iterating the calculation of the motion compensated pixel with at least two candidate motion parameters sets and/or at least two picture repetition values, and putting out the candidate motion parameter set and/or the picture repetition value which provides the minimized error criterion is proposed.

摘要翻译： 本发明涉及一种用于从输入视频信号提供运动参数集和/或图像重复模式的方法，特别是用于使用以图像重复图案值加权的候选运动参数集合来对视频信号进行去隔行计算 来自第一图像的像素值的运动补偿像素。 为了提供考虑场重复模式的运动补偿，通过用至少两个候选运动参数集迭代运动补偿像素的计算来最小化第二图像的至少一个像素值与至少运动补偿像素值之间的误差标准 和/或至少两个图像重复值，并且提出提出最小化误差准则的候选运动参数集和/或图像重复值。

公开(公告)号：US20110022382A1

公开(公告)日：2011-01-27

申请号：US12895817

申请日：2010-09-30

申请人： Joern Fischer

发明人： Joern Fischer

IPC分类号： G10L21/02 ,  G10L19/00

CPC分类号： G10L21/0208 ,  G10L21/02

摘要： An audio input signal is filtered using an adaptive filter to generate a prediction output signal with reduced noise, wherein the filter is implemented using a plurality of coefficients to generate a plurality of prediction errors and to generate an error from the plurality of prediction errors, wherein the absolute values of the coefficients are continuously reduced by a plurality of reduction parameters.

摘要翻译： 使用自适应滤波器对音频输入信号进行滤波，以产生具有降低的噪声的预测输出信号，其中使用多个系数来实现滤波器以产生多个预测误差并从多个预测误差产生误差，其中 系数的绝对值通过多个缩减参数连续地减小。

公开(公告)号：US07822112B2

公开(公告)日：2010-10-26

申请号：US11547733

申请日：2005-04-08

申请人： Xiaojun Yang ,  Richard W. Citta ,  Scott M. Lopresto

发明人： Xiaojun Yang ,  Richard W. Citta ,  Scott M. Lopresto

IPC分类号： H04L27/01

CPC分类号： H04L25/03057 ,  H04L7/0062 ,  H04L25/0212 ,  H04L2025/0342 ,  H04L2025/0349

摘要： A method of synchronizing a feedforward filter that receives a signal resulting from the transmission of a series of symbols through a channel, wherein the series of symbols includes a predetermined sequence of symbols includes the step of developing a plurality of samples from the received symbols, wherein a sequence of samples corresponds to the predetermined sequence of symbols. The method may further include the steps of estimating a channel impulse response from the plurality of samples, wherein the channel impulse response estimate is represented by a plurality of correlation values, identifying a maximum correlation value from the plurality of correlation values, defining a window relative to the maximum correlation value, calculating a characteristic of the correlation values within the window, and synchronizing the feedforward filter in accordance with the characteristic.

摘要翻译： 一种同步前馈滤波器的方法，所述前馈滤波器接收通过信道传输一系列符号产生的信号，其中所述一系列符号包括预定的符号序列包括从所接收的符号开发多个样本的步骤，其中 样本序列对应于预定的符号序列。 该方法还可以包括以下步骤：估计来自多个样本的信道脉冲响应，其中信道脉冲响应估计由多个相关值表示，从多个相关值中识别最大相关值，定义窗口相对 到最大相关值，计算窗口内的相关值的特性，并且根据特性同步前馈滤波器。

公开(公告)号：US20100201882A1

公开(公告)日：2010-08-12

申请号：US12063074

申请日：2006-08-03

申请人： Matthijs Carolus Piek ,  Herman Schoemaker ,  Eric Kathamann

发明人： Matthijs Carolus Piek ,  Herman Schoemaker ,  Eric Kathamann

IPC分类号： H04N5/217

CPC分类号： H04N7/0115 ,  H04N5/144 ,  H04N7/012 ,  H04N7/014

摘要： In a device for processing baseband signal images (BS), a film detector determines whether a same baseband signal image includes both information from a film image and information from a video source image, information from one film image being present in at least two baseband signal images while information from one video source image is present in only one baseband signal image. A processing unit processing the baseband signal images in such a manner that in the presence of both information from the film image and information from the video source image in the same baseband signal image, for each film image only one of the at least two baseband signal images is used to obtain a display signal image (DS).

摘要翻译： 在用于处理基带信号图像（BS）的设备中，胶片检测器确定相同的基带信号图像是否包括来自胶片图像的信息和来自视频源图像的信息，来自一个胶片图像的信息存在于至少两个基带信号 而来自一个视频源图像的信息仅存在于一个基带信号图像中。 一种处理单元，处理基带信号图像，使得在存在来自胶片图像的信息和来自相同基带信号图像中的视频源图像的信息的情况下，对于每个胶片图像，只有至少两个基带信号中的一个 图像用于获得显示信号图像（DS）。

公开(公告)号：US07761717B2

公开(公告)日：2010-07-20

申请号：US10193659

申请日：2002-07-10

申请人： Peter Möller ,  Zoran Mijovic ,  Manfred Jünke ,  Joachim Ritter ,  Steffen Zimmermann

发明人： Peter Möller ,  Zoran Mijovic ,  Manfred Jünke ,  Joachim Ritter ,  Steffen Zimmermann

IPC分类号： H04L29/06 ,  H04L1/00 ,  G06F9/00 ,  G06F12/14 ,  G06F15/167 ,  G06F13/00 ,  G06F3/00 ,  G06F12/00 ,  G06F11/00 ,  H04K1/00 ,  G08B29/00

CPC分类号： G06F21/572 ,  G06F21/79

摘要： A memory device containing data to be protected is integrated with a microprocessor and includes a first and a second memory portion with different accessibilities. The integration of the memory device on the same integrated circuit (IC) or chip as the microprocessor permits a combination of protective hardware and software measures that are not possible with a memory device that is on a different IC than the microprocessor. The first memory portion holds an initialization program that also serves as a boot program during decryption, and the second memory portion holds a user program, for example, a program for decrypting and/or decoding received data. Such data may be, for example, audio data encoded according to the MP3 standard and encrypted with a secret or public password against unauthorized reception.

摘要翻译： 包含要保护的数据的存储器件与微处理器集成，并且包括具有不同可访问性的第一和第二存储器部分。 存储器件与微处理器相同的集成电路（IC）或芯片的集成允许组合使用与微处理器不同的IC上的存储器件不可能的保护硬件和软件措施。 第一存储器部分保存在解密期间也用作引导程序的初始化程序，并且第二存储器部分保存用户程序，例如用于对接收数据进行解密和/或解码的程序。 这样的数据可以是例如根据MP3标准编码的音频数据，并且用未经授权接收的秘密或公共密码进行加密。

公开(公告)号：US07746929B2

公开(公告)日：2010-06-29

申请号：US10567224

申请日：2004-07-14

申请人： Stéphane Valente

发明人： Stéphane Valente

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  G06K9/36 ,  G06K9/46

CPC分类号： H04N19/97 ,  H04N19/12 ,  H04N19/176 ,  H04N19/51

摘要： The invention relates to the field of video compression and, more specifically, to a video encoding method applied to an input sequence of frames in which each frame is subdivided into blocks of arbitrary size. This method comprises, for at least a part of the blocks of the current frame, the steps of: generating on a block basis motion-compensated frames obtained from each current original frame and a previous reconstructed frame; generating the said motion-compensated frames residual signals; using a matching pursuit algorithm for decomposing each of the generated residual signals into coded dictionary functions called atoms, the other blocks of the current frame being processed by means of other coding techniques; coding said atoms and the motion vectors determined during the motion compensation step, for generating an output coded bitstream; said method being such that any atom acts only on one block B at a time, said block-restriction leading to the fact that the reconstruction of a residual signal f is obtained from a dictionary that is composed of basis functions gγnæBrestricted to the block B corresponding to the indexing parameter γn, according to the following 2D spatial domain operation: gγnæB(i,j)=gγn(i,j) if pixel (i,j)εB; gγnæB(i,j)=0 otherwise (i.e. (i,j)∉B).

摘要翻译： 本发明涉及视频压缩领域，更具体地说，涉及应用于帧的输入序列的视频编码方法，其中每个帧被细分成任意大小的块。 该方法对于当前帧的至少一部分块包括以下步骤：基于从每个当前原始帧获得的运动补偿帧和先前重建帧来生成块; 产生所述运动补偿帧残差信号; 使用匹配追踪算法将每个所生成的残差信号分解成称为原子的编码字典函数，当前帧的其他块通过其他编码技术进行处理; 编码所述原子和在运动补偿步骤期间确定的运动矢量，用于产生输出编码比特流; 所述方法使得任何原子一次仅在一个块B上起作用，所述块限制导致残留信号f的重构从由对于块B对应的基函数gγn限制的字典获得的事实 根据以下2D空间域运算，索引参数γn：如果像素（i，j）＆egr; B;gγnæB（i，j）=gγn（i，j） 否则（即，（i，j）∉B）gγnæB（i，j）= 0。

公开(公告)号：US07734984B2

公开(公告)日：2010-06-08

申请号：US11595546

申请日：2006-11-10

申请人： Chi-Ping Nee ,  Abraham Krieger ,  Shachar Kons ,  Chun-Hsuan Kuo

发明人： Chi-Ping Nee ,  Abraham Krieger ,  Shachar Kons ,  Chun-Hsuan Kuo

IPC分类号： H03M13/00

CPC分类号： H03M13/2936 ,  H03M13/2732 ,  H03M13/293

摘要： An erasures assisted block code decoder and related method are provided. The erasures assisted block code decoder includes a first block decoder, an erasures processor, and a second block code decoder. The first block decoder, for example, a Reed-Solomon decoder, is configured to decode blocks of data elements, e.g., bytes, that were previously affected by bursty errors. The first block decoder is also configured to identify those of such blocks it is unable to decode. The erasures processor is configured to identify, as erasures, data elements in the un-decodable blocks by utilizing, in the erasures identification process, data elements in the decoded blocks that were corrected by the first block decoder. The second block decoder, e.g., the same or different Reed-Solomon decoder, is configured to decode one or more of the un-decodable blocks by utilizing, in the decoding, the erasures identified by the erasures processor.

摘要翻译： 提供了一种擦除辅助块代码解码器及相关方法。 擦除辅助块码解码器包括第一块解码器，擦除处理器和第二块码解码器。 第一块解码器，例如Reed-Solomon解码器，被配置为对先前受突发错误影响的诸如字节的数据元素块进行解码。 第一块解码器还被配置为识别其不能解码的这些块的那些。 擦除处理器被配置为通过在擦除识别处理中利用由第一块解码器校正的解码块中的数据元素来识别不可解码块中的数据元素作为擦除。 第二块解码器，例如相同或不同的里德 - 所罗门解码器，被配置为通过在解码中利用由擦除处理器识别的擦除来解码一个或多个不可解码块。

公开(公告)号：US07729414B2

公开(公告)日：2010-06-01

申请号：US12187220

申请日：2008-08-06

申请人： Jonathan Parker

发明人： Jonathan Parker

IPC分类号： H04B1/707

CPC分类号： H04N5/455 ,  H04L27/2662 ,  H04L27/2666 ,  H04N5/4401 ,  H04N21/42607 ,  H04N21/4382 ,  H04N21/6112

摘要： A receiver circuit processes a received signal to determine information regarding a guard interval therein. The receiver circuit typically forms digital samples from the received signal; generates a correlation function with peaks at positions that are determined by the size of the guard interval and a position of the guard interval within the received signal. The receiver circuit includes one or more comb filters, each corresponding to a possible guard interval size, each receiving a series of locations at which the correlation function exceeds a predetermined threshold, and each producing an output that provides information about the guard interval size and/or position. This advantageously allows the receiver circuit to determine the guard interval size quickly, for example, even in the case of received signals with relatively low signal-noise ratio.

摘要翻译： 接收器电路处理接收到的信号以确定关于其中的保护间隔的信息。 接收机电路通常从接收信号形成数字采样; 在由保护间隔的大小和接收信号中的保护间隔的位置确定的位置处产生具有峰值的相关函数。 接收器电路包括一个或多个梳状滤波器，每个梳状滤波器对应于可能的保护间隔尺寸，每个梳状滤波器接收相关函数超过预定阈值的一系列位置，并且每个梳状滤波器产生提供关于保护间隔尺寸和/ 或位置。 这有利地允许接收机电路快速地确定保护间隔大小，例如即使在具有相对低的信噪比的接收信号的情况下也是如此。