公开(公告)号：US07328848B2

公开(公告)日：2008-02-12

申请号：US11304102

申请日：2005-12-14

申请人： Yu Xia ,  Qianjiang Huai ,  Hao Wang ,  David Xiao D. Yang ,  Zhonghan Deng

发明人： Yu Xia ,  Qianjiang Huai ,  Hao Wang ,  David Xiao D. Yang ,  Zhonghan Deng

IPC分类号： G06K7/10

CPC分类号： H03M13/05 ,  Y10S379/91

摘要： Techniques for transmitting data between devices based on two-dimensional symbols are disclosed, where the devices are generally not equipped with the traditional networking capabilities, or at least these traditional networking capabilities are not used for the data communication. According to one aspect of the techniques, two devices communicate with each other by displaying one or more two-dimensional symbols. Data is encoded into one or more symbols that are displayed on one of the devices. Images of the symbols are taken by another one of the devices to receive the data. These images are sequentially processed and decoded so that the data is now received. To accommodate various environments, the system is configured to adjust parameters pertaining to the symbols to achieve an optimum transmission rate.

摘要翻译： 公开了用于在基于二维符号的设备之间传输数据的技术，其中设备通常不配备传统的联网能力，或者至少这些传统的联网能力不用于数据通信。 根据技术的一个方面，两个设备通过显示一个或多个二维符号来相互通信。 数据被编码成在其中一个设备上显示的一个或多个符号。 符号的图像由另一个设备接收数据。 这些图像被顺序处理和解码，以便现在接收数据。 为了适应各种环境，系统被配置为调整与符号相关的参数以实现最佳传输速率。

公开(公告)号：US07620172B2

公开(公告)日：2009-11-17

申请号：US11304139

申请日：2005-12-14

申请人： Zhongsong Lin ,  David Xiao D. Yang ,  Zhonghan Deng

发明人： Zhongsong Lin ,  David Xiao D. Yang ,  Zhonghan Deng

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： Techniques for simultaneously and efficiently eliminating echo and noise mixed in voice are disclosed. According to one aspect of the present invention, an adaptive filter system for eliminating noises and echo mixed in voice signal comprises a first signal adaptive filter, a first subtractor, a second adaptive filter and a second subtractor. The first signal adaptive filter estimates the noise mixed in the voice signal according to a reference noise. The first subtractor subtracts the noise estimated by the first adaptive filter from the voice signal to obtain a voice signal without the mixed noise. The second adaptive filter estimates the echo mixed in the voice signal according to a remote voice signal. The second subtractor subtracts the echo estimated by the second adaptive filter from the voice signal without mixed noise to obtain a clean voice signal.

摘要翻译： 公开了同时有效地消除混合在声音中的回波和噪声的技术。 根据本发明的一个方面，一种用于消除混合在语音信号中的噪声和回波的自适应滤波器系统包括第一信号自适应滤波器，第一减法器，第二自适应滤波器和第二减法器。 第一信号自适应滤波器根据参考噪声估计混合在语音信号中的噪声。 第一个减法器从语音信号中减去由第一自适应滤波器估计的噪声，以获得没有混合噪声的语音信号。 第二自适应滤波器根据远程语音信号估计混合在语音信号中的回波。 第二个减法器从没有混合噪声的语音信号中减去由第二自适应滤波器估计的回波，以获得干净的语音信号。

公开(公告)号：US07565483B2

公开(公告)日：2009-07-21

申请号：US11262152

申请日：2005-10-28

申请人： Mingqi You ,  David Xiao D. Yang

发明人： Mingqi You ,  David Xiao D. Yang

IPC分类号： G06F12/00

CPC分类号： G11B5/012 ,  G11B27/105 ,  G11B27/322 ,  G11B2220/20

摘要： Techniques for storing and reading data on/from a hard disk are disclosed. According to one aspect of the present invention, a hard disk is provided with a parameter storage block for storing a number of parameters. One of the parameters is a last physical address the hard disk was accessed. The last physical address is used as a reference to read data segments onto the hard disk. Each of the data segments is a compressed version of a portion of data to be stored in the hard disk. A portion of the data is allocated in accordance with a predefined time period. Accordingly, the compressed data portion also includes a header including information about the compressed data portion. The information includes at least a compression scheme used as well as the time about the data portion. Based on how the data is stored, a corresponding reading method is also provided.

摘要翻译： 公开了用于在硬盘上存储和读取数据的技术。 根据本发明的一个方面，硬盘设置有用于存储多个参数的参数存储块。 其中一个参数是访问硬盘的最后一个物理地址。 最后一个物理地址用作将数据段读入硬盘的参考。 每个数据段是要存储在硬盘中的一部分数据的压缩版本。 根据预定义的时间段分配数据的一部分。 因此，压缩数据部分还包括包括关于压缩数据部分的信息的报头。 该信息至少包括使用的压缩方案以及关于数据部分的时间。 基于如何存储数据，还提供了相应的读取方法。