公开(公告)号：US09124769B2

公开(公告)日：2015-09-01

申请号：US12505966

申请日：2009-07-20

申请人： Venugopal Srinivasan ,  Arun Ramaswamy

发明人： Venugopal Srinivasan ,  Arun Ramaswamy

IPC分类号： H04N7/173 ,  H04N7/16 ,  H04H60/31 ,  H04N21/436

CPC分类号： H04N21/44204 ,  G06F21/6245 ,  H04H60/31 ,  H04N7/163 ,  H04N21/42203 ,  H04N21/43615 ,  H04N21/4394 ,  H04N21/4396 ,  H04N21/44213 ,  H04N21/4667

摘要： Example methods and apparatus to verify presentation of media content are disclosed. A disclosed example apparatus for use with a set-top box (STB) and a media presentation device includes an audio input interface to receive a first audio signal associated with a program selected by a user via the STB, a microphone to receive a free-field radiating second audio signal output by at least one of the media presentation device or an audio system associated with the media presentation device, a comparator to compare the second audio signal to the first audio signal to form an output, and an output interface to provide a value indicative of whether the program selected by the user via the STB is presented at the media presentation device.

摘要翻译： 公开了用于验证媒体内容呈现的示例性方法和装置。 用于机顶盒（STB）和媒体呈现装置的公开的示例性装置包括：音频输入接口，用于接收与由用户经由STB选择的节目相关联的第一音频信号;麦克风， 由媒体呈现设备或与媒体呈现设备相关联的音频系统中的至少一个输出的第二音频信号，比较器，用于将第二音频信号与第一音频信号进行比较以形成输出;以及输出接口， 指示由用户经由STB选择的节目是否在媒体呈现设备处被呈现的值。

公开(公告)号：US09093064B2

公开(公告)日：2015-07-28

申请号：US13793962

申请日：2013-03-11

申请人： Venugopal Srinivasan ,  Alexander Topchy

发明人： Venugopal Srinivasan ,  Alexander Topchy

IPC分类号： G10L19/018 ,  G10L19/008

CPC分类号： G10L19/018 ,  G10L19/008

摘要： Example methods, apparatus, systems and articles of manufacture to implement down-mixing compensation for audio watermarking are disclosed. Example methods disclosed herein to compensate for audio channel down-mixing when embedding watermarks in a multichannel audio signal include obtaining a watermark to be embedded in respective ones of a plurality of audio channels of the multichannel audio signal. Such example methods also include embedding the watermark in a first one of the plurality of audio channels based on a compensation factor that is to reduce perceptibility of the watermark when the first one of the plurality of audio channels is down-mixed with a second one of the plurality of audio channels after the watermark has been applied to the first and second ones of the plurality of audio channels.

摘要翻译： 公开了用于实现音频水印的下混补偿的示例性方法，装置，系统和制品。 当将水印嵌入多声道音频信号中时，本文公开的用于补偿音频通道下混的示例方法包括获得要嵌入在多声道音频信号的多个音频通道的相应的一个中的水印。 这种示例性方法还包括：基于当多个音频通道中的第一个音频通道与第一个音频通道中的第二个被混合时降低水印的可感知性的补偿因子，将该水印嵌入多个音频通道的第一个中 水印之后的多个音频通道已被应用于多个音频通道中的第一和第二音频通道。

公开(公告)号：US20150189378A1

公开(公告)日：2015-07-02

申请号：US14144624

申请日：2013-12-31

申请人： Padmanabhan Soundararajan ,  Venugopal Srinivasan ,  Alexander Topchy

发明人： Padmanabhan Soundararajan ,  Venugopal Srinivasan ,  Alexander Topchy

IPC分类号： H04N21/442

CPC分类号： H04N21/44218 ,  H04N21/4126 ,  H04N21/44222 ,  H04N21/44231 ,  H04N21/4524

摘要： Methods, apparatus, systems and articles of manufacture to count people in an audience are disclosed. An example method includes analyzing location information collected by a portable device indicative of a location of the portable device. The method also includes analyzing proximity information collected by the portable device indicative of when a person is near the portable device. The example method further includes generating presence information based on (1) the location information and (2) the proximity information, the presence information being indicative of whether the person is present in a media exposure environment associated with a media presentation device.

摘要翻译： 披露了计算观众人数的方法，设备，系统和制品。 示例性方法包括分析由便携式设备收集的指示便携式设备的位置的位置信息。 该方法还包括分析便携式设备收集的邻近信息，指示人在什么时候在便携式设备附近。 该示例性方法还包括基于（1）位置信息和（2）邻近信息来生成呈现信息，该呈现信息指示该人是否存在于与媒体呈现设备相关联的媒体曝光环境中。

公开(公告)号：US20140137146A1

公开(公告)日：2014-05-15

申请号：US14074499

申请日：2013-11-07

申请人： Alexander Pavlovich Topchy ,  Arun Ramaswamy ,  Venugopal Srinivasan

发明人： Alexander Pavlovich Topchy ,  Arun Ramaswamy ,  Venugopal Srinivasan

IPC分类号： H04N21/8358 ,  H04N21/442

CPC分类号： H04N21/8358 ,  G06F17/30743 ,  G10L25/48 ,  G11B27/28 ,  H04H60/37 ,  H04H60/58 ,  H04H60/66 ,  H04H2201/90 ,  H04N21/442

摘要： Signaturing methods and apparatus as described. An example method includes applying a first function to a portion of digital data to produce a first windowed block, applying a second function different from the first function to the same portion of the digital data to produce a second windowed block, determining a first characteristic of a band of frequencies in the first windowed block, determining a second characteristic of the band of frequencies in the second windowed block, comparing the first characteristic to the second characteristic, and assigning a signature bit representative of the portion of the digital data based on the comparison of the first characteristic and the second characteristic.

摘要翻译： 所述的标记方法和装置。 一个示例性方法包括将第一函数应用于数字数据的一部分以产生第一窗口化块，将与第一函数不同的第二函数应用于数字数据的相同部分以产生第二窗口块，确定第一特征 在第一窗口化块中的频带，确定第二窗口化块中的频带的第二特性，将第一特征与第二特性进行比较，以及基于该第一特征向量分配表示数字数据部分的签名位 第一特征与第二特征的比较。

公开(公告)号：US08660308B2

公开(公告)日：2014-02-25

申请号：US13459908

申请日：2012-04-30

申请人： Arun Ramaswamy ,  Daniel J. Nelson ,  Venugopal Srinivasan

发明人： Arun Ramaswamy ,  Daniel J. Nelson ,  Venugopal Srinivasan

IPC分类号： G06K9/00 ,  G06K9/34

CPC分类号： G06K9/00362 ,  H04H60/33 ,  H04H60/43 ,  H04H60/45 ,  H04N7/17309 ,  H04N21/258 ,  H04N21/42201 ,  H04N21/4223 ,  H04N21/433 ,  H04N21/4335 ,  H04N21/44008 ,  H04N21/44218 ,  H04N21/44222

摘要： Methods and apparatus for detecting a composition of an audience of an information presenting device are disclosed. A disclosed example method includes: capturing at least one image of the audience; determining a number of people within the at least one image; prompting the audience to identify its members if a change in the number of people is detected based on the number of people determined to be within the at least one image; and if a number of members identified by the audience is different from the determined number of people after a predetermined number of prompts of the audience, adjusting a value to avoid excessive prompting of the audience.

摘要翻译： 公开了一种用于检测信息呈现装置的观众的组成的方法和装置。 公开的示例性方法包括：捕获观众的至少一个图像; 确定所述至少一个图像内的一些人; 促使观众识别其成员，如果根据确定在至少一个图像内的人数来检测人数的变化; 如果观众确定的一些成员与预定数量的观众提示之间的确定人数不同，则调整值以避免观众过度提示。

公开(公告)号：US08600216B2

公开(公告)日：2013-12-03

申请号：US12942800

申请日：2010-11-09

申请人： Arun Ramaswamy ,  Venugopal Srinivasan

发明人： Arun Ramaswamy ,  Venugopal Srinivasan

IPC分类号： H04N9/82

CPC分类号： H04N21/44 ,  H04N19/48 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/2362 ,  H04N21/2365 ,  H04N21/23892 ,  H04N21/25891 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4347 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4408 ,  H04N21/44204 ,  H04N21/8126 ,  H04N21/8352 ,  H04N21/8358 ,  H04N21/854 ,  H04N21/8586

摘要： Methods, apparatus, and articles of manufacture for performing data insertion in compressed audio/video data streams are disclosed. An example method disclosed herein to insert audience measurement data in a compressed media data stream comprises rearranging data in frames of the compressed media data stream to form contiguous sequences of skip bytes at respective locations in the frames of the compressed media data stream, the audience measurement data to be inserted in the compressed media data stream at the locations of the contiguous sequences of skip bytes, the contiguous sequences of skip bytes having respective lengths, and inserting different types of audience measurement data at the locations of the contiguous sequences of skip bytes in two different frames of the compressed media data stream based on the respective lengths of the contiguous sequences of skip bytes in the two different frames of the compressed media data stream.

摘要翻译： 公开了在压缩音频/视频数据流中执行数据插入的方法，装置和制品。 本文公开的将受众测量数据插入到压缩媒体数据流中的示例性方法包括在压缩媒体数据流的帧中重新排列数据，以在压缩媒体数据流的帧中的相应位置处形成连续的跳过字节序列，观众测量 要在连续的跳过字节序列的位置处插入压缩媒体数据流中的数据，具有相应长度的连续的跳过字节序列，以及将不同类型的观众测量数据插入到连续的跳过字节序列的位置 基于压缩媒体数据流的两个不同帧中的连续的跳过字节序列的相应长度，压缩媒体数据流的两个不同帧。

公开(公告)号：US20130268279A1

公开(公告)日：2013-10-10

申请号：US13907286

申请日：2013-05-31

申请人： Venugopal Srinivasan ,  Alexander Topchy

发明人： Venugopal Srinivasan ,  Alexander Topchy

IPC分类号： G10L19/018

CPC分类号： G10L19/018

摘要： Methods and apparatus for performing variable block length watermarking of media are disclosed. An example method to encode auxiliary data in audio data comprises selecting a frequency based on a code, selecting a block size based on the code, a combination of the block size and the frequency to represent of the code, encoding the code in an audio stream according to the block size and the frequency, and transmitting the audio stream including the encoded code.

摘要翻译： 公开了用于执行媒体的可变块长度水印的方法和装置。 用于对音频数据中的辅助数据进行编码的示例性方法包括：基于代码选择频率，基于代码选择块大小，块大小和频率的组合来表示代码，对音频流中的代码进行编码 根据块大小和频率，并发送包括编码的音频流。

公开(公告)号：US20130259381A1

公开(公告)日：2013-10-03

申请号：US13434337

申请日：2012-03-29

申请人： Venugopal Srinivasan ,  Padmanabhan Soundararajan

发明人： Venugopal Srinivasan ,  Padmanabhan Soundararajan

IPC分类号： G06K9/46

CPC分类号： G06K9/00771 ,  G06K9/00221 ,  G06K9/00228 ,  G06T7/20 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/30242

摘要： Methods and apparatus to count people in images are disclosed. An example method includes dividing a frame of image data into a plurality of segments; calculating first fluctuation factors for the respective segments; calculating a second fluctuation factor for the frame; and identifying ones of the segments having a first fluctuation factor greater than the second fluctuation factor as active segments.

摘要翻译： 披露了图像中计数人的方法和设备。 一种示例性方法包括将一帧图像数据划分成多个段; 计算各段的第一波动因子; 计算帧的第二波动因子; 以及将具有大于所述第二波动因数的第一波动因子的所述段中的一个识别为活动段。

公开(公告)号：US08458737B2

公开(公告)日：2013-06-04

申请号：US12110951

申请日：2008-04-28

申请人： Alexander Topchy ,  Venugopal Srinivasan

发明人： Alexander Topchy ,  Venugopal Srinivasan

IPC分类号： H04H60/32

CPC分类号： H04H60/58 ,  G06F17/30743 ,  H04H20/14 ,  H04H2201/90

摘要： Methods and apparatus for characterizing media are described. In one example, a method of characterizing media includes capturing a block of audio; converting at least a portion of the block of audio into a frequency domain representation; dividing the frequency domain representation into a plurality of bands; determining a characteristic difference of a first band of the plurality of bands based on a comparison of a characteristic of the first band and a characteristic of a second band different from the first band, wherein the characteristic of the first band occurs at a time that is different than a time at which the characteristic of the second band takes place; and determining a signature bit based on a characteristic difference. Other examples are shown and described.

摘要翻译： 描述用于表征介质的方法和装置。 在一个示例中，表征媒体的方法包括捕获音频块; 将音频块的至少一部分转换成频域表示; 将频域表示划分成多个频带; 基于所述第一频带的特性与不同于所述第一频带的第二频带的特性的比较，确定所述多个频带中的第一频带的特征差，其中，所述第一频带的特性在 与第二频带的特征发生的时间不同; 以及基于特征差确定签名比特。 示出和描述其他示例。

公开(公告)号：US08351645B2

公开(公告)日：2013-01-08

申请号：US13283271

申请日：2011-10-27

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： G06K9/00 ,  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 disclosed herein to embed a watermark in a compressed data stream comprises obtaining a set of transform coefficients included in the compressed data stream, the set of transform coefficients having a respective first set of mantissa codes and a respective set of exponents, the first set of mantissa codes associated with a respective set of mantissa step sizes, identifying a first transform coefficient from the set of transform coefficients having a smallest magnitude among the set of transform coefficients, determining a second set of mantissa codes based on the first transform coefficient and the set of step sizes, and replacing the first set of mantissa codes included in the compressed data stream with the second set of mantissa codes to embed the watermark without uncompressing the compressed data stream.

摘要翻译： 公开了嵌入水印的方法和装置。 本文公开的将水印嵌入压缩数据流中的示例性方法包括获得包括在压缩数据流中的一组变换系数，该组变换系数具有相应的第一组尾数代码和相应的指数集合，第一 与相应的尾数步长相关联的尾数码集合，从所述变换系数集合中的所述变换系数集合中识别出第一变换系数，基于所述第一变换系数确定第二组尾数码;以及 所述步长的集合，并且用第二组尾数代码替换包含在压缩数据流中的第一组尾数代码，以嵌入水印而不压缩压缩数据流。