公开(公告)号：US20100223062A1

公开(公告)日：2010-09-02

申请号：US12464811

申请日：2009-05-12

申请人： Venugopal Srinivasan ,  Alexander Pavlovich Topchy

发明人： Venugopal Srinivasan ,  Alexander Pavlovich Topchy

IPC分类号： G10L19/00

CPC分类号： H04H20/31 ,  G10L19/018 ,  G10L19/0208 ,  G10L19/173 ,  G11B20/10 ,  H04H60/37 ,  H04H60/58

摘要： Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. According to an example method, an identifier is encoded in media content when a different identifier has been previously encoded. According to another example method, messages decoded from media content are validated to provide improved decoding accuracy. In another example method, decoded symbols are stored in memory and synchronization symbols are located to detect a message encoded in media content.

摘要翻译： 本文描述了音频水印和​​水印检测和提取的方法和装置。 根据示例方法，当先前编码了不同的标识符时，标识符被编码在媒体内容中。 根据另一示例性方法，验证从媒体内容解码的消息以提供改进的解码精度。 在另一示例性方法中，解码的符号被存储在存储器中，并且定位同步符号以检测在媒体内容中编码的消息。

公开(公告)号：US20100198380A1

公开(公告)日：2010-08-05

申请号：US12760712

申请日：2010-04-15

申请人： John C. Peiffer ,  Michael A. Hicks ,  David H. Wright ,  Paul M. Mears ,  Venugopal Srinivasan ,  Daozheng Lu ,  Paul C. Kempter

发明人： John C. Peiffer ,  Michael A. Hicks ,  David H. Wright ,  Paul M. Mears ,  Venugopal Srinivasan ,  Daozheng Lu ,  Paul C. Kempter

IPC分类号： G06F17/00

CPC分类号： H04H60/59 ,  H04H60/37 ,  H04H60/58 ,  H04H2201/90 ,  H04N7/17318 ,  H04N21/235 ,  H04N21/4331 ,  H04N21/4394 ,  H04N21/44213 ,  H04N21/812 ,  H04N21/8352

摘要： Methods and apparatus for identifying a digital audio signal are described. An example apparatus for identifying a digital audio signal includes an input to receive the digital audio signal, which includes data from a broadcast or a stored digital program signal. The example apparatus also includes a detector to receive the digital audio signal from the input and determine whether the received digital audio signal is uncompressed as received at the input; a decoder to receive the digital audio signal from the detector when the digital audio signal is compressed as received at the input and identify any first program-identifying code in an auxiliary field of the compressed digital audio signal; and a code reader to receive the digital audio signal from the detector when the digital audio signal is uncompressed as received at the input and receive the digital audio signal from a decompressor when the digital audio signal is compressed as received at the input. Additionally, the code reader is to identify any second program-identifying code in a decompressed or uncompressed portion of the digital audio signal when the first program-identifying code is not identified in the auxiliary field or when the digital audio signal is uncompressed as received at the input.

摘要翻译： 描述用于识别数字音频信号的方法和装置。 用于识别数字音频信号的示例性装置包括用于接收包括来自广播或存储的数字节目信号的数据的数字音频信号的输入。 该示例设备还包括一个检测器，用于从输入端接收数字音频信号，并确定接收到的数字音频信号是否在输入端被接收为未压缩; 解码器，当数字音频信号被压缩成在输入处接收时，从检测器接收数字音频信号，并识别压缩数字音频信号的辅助字段中的任何第一节目识别码; 以及代码阅读器，当数字音频信号在输入端被接收时未被压缩时从检测器接收数字音频信号，并且当数字音频信号在输入端被接收时从解压缩器接收数字音频信号。 另外，当第一节目识别码在辅助字段中未识别时或当数字音频信号未被压缩为如在第一节目识别码处被接收时，代码阅读器将识别数字音频信号的解压缩或未压缩部分中的任何第二节目识别码 输入。

公开(公告)号：US20100106510A1

公开(公告)日：2010-04-29

申请号：US12551220

申请日：2009-08-31

申请人： Alexander Topchy ,  Venugopal Srinivasan

发明人： Alexander Topchy ,  Venugopal Srinivasan

IPC分类号： G10L19/00 ,  G10L11/00

CPC分类号： G06F17/30743 ,  G11B20/10 ,  H04H20/31 ,  H04H60/37 ,  H04H60/58 ,  H04H2201/50

摘要： Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of samples in the buffer, wherein the second sequence of samples is of substantially equal length as the first sequence of samples, calculating an average of the first sequence of samples and the second sequence of samples to generate an average sequence of samples, extracting an identifier from the average sequence of samples, and storing the identifier in a tangible memory.

摘要翻译： 本文描述了音频水印和​​水印检测和提取的方法和装置。 示例性方法包括：接收媒体内容信号，对媒体内容信号进行采样以产生样本，将样本存储在缓冲器中，确定缓冲器中的第一采样序列，确定缓冲器中的第二采样序列，其中第二序列 的样本具有与第一样本序列基本相同的长度，计算第一样本序列的平均值和第二样本序列以生成平均样本序列，从平均样本序列中提取标识符，并存储 标识符在有形存储器中。

公开(公告)号：US07672843B2

公开(公告)日：2010-03-02

申请号：US11143808

申请日：2005-06-02

申请人： Venugopal Srinivasan ,  Keqiang Deng ,  Daozheng Lu

发明人： Venugopal Srinivasan ,  Keqiang Deng ,  Daozheng Lu

IPC分类号： G10L15/00

CPC分类号： H04H60/29 ,  G10L25/48 ,  H04H60/58

摘要： A signature is extracted from the audio of a program received by a tunable receiver such that the signature characterizes the program. In order to extract the signature, blocks of the audio are converted to corresponding spectral moments. At least one of the spectral moments is then converted to the signature. Also, a test audio signal from a receiver is correlated to a reference audio signal by converting the test audio signal and the reference audio signal to corresponding test and reference spectra, determining test slopes corresponding to coefficients of the test spectrum and reference slopes corresponding to coefficients of the reference spectrum, and comparing the test slopes to the reference slopes in order to determine a match between the test audio signal and the reference audio signal.

摘要翻译： 从可调谐接收机接收的节目的音频中提取签名，使得该签名表征该节目。 为了提取签名，将音频的块转换为相应的频谱矩。 然后将至少一个光谱时刻转换为签名。 此外，来自接收机的测试音频信号通过将测试音频信号和参考音频信号转换为相应的测试和参考频谱与参考音频信号相关，确定对应于测试频谱的系数的测试斜率和对应于系数的参考斜率 并且将测试斜率与参考斜率进行比较，以便确定测试音频信号和参考音频信号之间的匹配。

公开(公告)号：US07643652B2

公开(公告)日：2010-01-05

申请号：US12269733

申请日：2008-11-12

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： G06K9/00 ,  H04B1/66 ,  H04L9/32

CPC分类号： G06T1/0021 ,  G10L19/018 ,  G10L19/0212 ,  G10L25/27

摘要： Methods and apparatus for embedding a watermark are disclosed. An example method to embed media identification information in a compressed media data stream disclosed herein comprises reconstructing an uncompressed media data stream from the compressed media data stream, the uncompressed media data stream separate from the compressed media data stream, embedding the media identification information in the uncompressed media data stream to determine a watermarked uncompressed media data stream, and modifying a first mantissa value corresponding to a first transform coefficient associated with the compressed media stream to embed the media identification information in the compressed media data stream without uncompressing the compressed media data stream, the modification of the first mantissa value based on a difference between the first transform coefficient and a corresponding second transform coefficient generated from the watermarked uncompressed media data stream.

摘要翻译： 公开了嵌入水印的方法和装置。 在本文公开的压缩媒体数据流中嵌入媒体标识信息的示例性方法包括：从压缩媒体数据流重建未压缩媒体数据流，从压缩媒体数据流分离未压缩媒体数据流，将媒体标识信息嵌入到 未压缩的媒体数据流，以确定加密的未压缩媒体数据流，以及修改对应于与压缩媒体流相关联的第一变换系数的第一尾数值，以将媒体标识信息嵌入到压缩媒体数据流中，而无需解压缩压缩媒体数据流 基于第一变换系数与从加密的未压缩媒体数据流生成的对应的第二变换系数之间的差异来修改第一尾数值。

公开(公告)号：US07631324B2

公开(公告)日：2009-12-08

申请号：US11916511

申请日：2005-06-08

申请人： John William Buonasera ,  Christen Voss Nielsen ,  Venugopal Srinivasan

发明人： John William Buonasera ,  Christen Voss Nielsen ,  Venugopal Srinivasan

IPC分类号： H04N60/33

CPC分类号： G06Q30/02

摘要： Methods and apparatus for indirect illumination in electronic media rating systems are disclosed. A disclosed electronic media rating system comprises an audience image detection system and a non-visible light source to provide indirect illumination of an audience member.

摘要翻译： 公开了电子介质评级系统中间接照明的方法和装置。 所公开的电子媒体评级系统包括观众图像检测系统和不可见光源，以提供观众成员的间接照明。

公开(公告)号：US07460684B2

公开(公告)日：2008-12-02

申请号：US11298040

申请日：2005-12-09

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： G06K9/00 ,  H04L9/00

CPC分类号： G06T1/0021 ,  G10L19/018 ,  G10L19/0212 ,  G10L25/27

摘要： Methods and apparatus for embedding a watermark are disclosed. In an example method, one or more frames associated with a compressed digital data stream (240) is identified. Each of the one or more frames is unpacked to determine a plurality of transform coefficient sets (320). The plurality of transform coefficient sets (320) is modified to embed the watermark (230).

摘要翻译： 公开了嵌入水印的方法和装置。 在示例性方法中，识别与压缩数字数据流（240）相关联的一个或多个帧。 一个或多个帧中的每一个被解包以确定多个变换系数集（320）。 改变多个变换系数组（320）以嵌入水印（230）。

公开(公告)号：US20080253440A1

公开(公告)日：2008-10-16

申请号：US11571483

申请日：2005-06-29

申请人： Venugopal Srinivasan ,  John C. Peiffer

发明人： Venugopal Srinivasan ,  John C. Peiffer

IPC分类号： H04B1/66

CPC分类号： H04N5/265 ,  G10L19/008 ,  G10L19/032 ,  G10L19/173 ,  G11B20/00007 ,  G11B20/10527 ,  G11B27/034 ,  G11B2020/00028 ,  G11B2020/00036 ,  G11B2020/10546

摘要： Methods, apparatus and articles of manufacture for mixing compressed digital bit streams are disclosed. An example method disclosed herein comprises acquiring a frame associated with a first compressed digital bit stream, unpacking the frame to obtain a plurality of original transform coefficient sets, and modifying the plurality of original transform coefficient sets to mix a second digital bit stream with the first compressed digital bit stream.

摘要翻译： 公开了用于混合压缩数字比特流的方法，装置和制品。 本文公开的示例性方法包括获取与第一压缩数字比特流相关联的帧，解包所述帧以获得多个原始变换系数集合，以及修改所述多个原始变换系数集合以将第二数字比特流与所述第一数字比特流混合 压缩数字位流。

公开(公告)号：US20080091288A1

公开(公告)日：2008-04-17

申请号：US11870275

申请日：2007-10-10

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： G06F17/00

CPC分类号： G10L19/018 ,  G10L19/0212 ,  G10L19/035

摘要： Methods and apparatus for embedding codes in compressed audio data streams are disclosed. An example method to embed a code in a compressed audio data stream disclosed herein comprises obtaining a plurality of transform coefficients comprising the compressed audio data stream, wherein the plurality of transform coefficients is represented by a respective plurality of mantissas and a respective plurality of scale factors, and modifying a mantissa in the plurality of mantissas and a corresponding scale factor in the plurality of scale factors to embed the code in the compressed audio data stream.

摘要翻译： 公开了在压缩音频数据流中嵌入代码的方法和装置。 将代码嵌入本文公开的压缩音频数据流中的示例性方法包括获得包括压缩音频数据流的多个变换系数，其中多个变换系数由相应的多个标号和相应的多个比例因子 以及修改多个尾数中的尾数和多个比例因子中的对应比例因子以将该代码嵌入压缩音频数据流中。

公开(公告)号：US07353171B2

公开(公告)日：2008-04-01

申请号：US11375648

申请日：2006-03-14

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： G10L21/02

CPC分类号： H04N21/4415 ,  G10L15/20 ,  G10L15/22 ,  G10L21/0208 ,  G10L2015/223 ,  G10L2021/02166 ,  H04H60/45 ,  H04N21/42203

摘要： Methods and apparatus to operate an audience metering device with voice commands are described herein. In an example method, at least one of a television program audio signal or a voice command from an audience member is transduced into an audio input signal. Based on the audio input signal and a television audio line signal, a residual audio signal is generated. One or more vectors from the residual audio signal are extracted. Based on the one or more vectors extracted from the residual audio signal, the voice command is identified.

摘要翻译： 本文描述了使用语音命令操作观众计量装置的方法和装置。 在示例性方法中，电视节目音频信号或来自听众成员的语音命令中的至少一个被转换成音频输入信号。 基于音频输入信号和电视音频线信号，产生残留音频信号。 提取来自剩余音频信号的一个或多个矢量。 基于从残留音频信号提取的一个或多个向量，识别语音命令。