公开(公告)号：US20090192805A1

公开(公告)日：2009-07-30

申请号：US12361991

申请日：2009-01-29

申请人： Alexander Topchy ,  Venugopal Srinivasan

发明人： Alexander Topchy ,  Venugopal Srinivasan

IPC分类号： G10L19/00

CPC分类号： G10L19/018

摘要： Methods, apparatus, and articles of manufacture are disclosed in which auxiliary information is added to or removed from an audio signal. In one example, the information may be added to the audio signal using at least two frequencies that are dictated by two different frequency transformation block sizes, such that the two frequencies are not fully visible when an incorrect block size is used to perform a frequency transformation. Additionally, in another example, a decoder may compensate for time and frequency affects caused by removing old samples and adding new samples, which, in one example, alleviates the need to perform repeated frequency transformation using different frequency transformation block sizes. Other examples are described.

摘要翻译： 公开了将辅助信息添加到音频信号或从音频信号中移除的方法，装置和制品。 在一个示例中，可以使用由两个不同的频率变换块大小指定的至少两个频率将信息添加到音频信号，使得当使用不正确的块大小来执行频率变换时，两个频率不完全可见 。 此外，在另一个示例中，解码器可以补偿由去除旧样本和添加新样本引起的时间和频率影响，在一个示例中，这样减少了使用不同频率变换块大小进行重复频率变换的需要。 描述其他示例。

公开(公告)号：US20070274537A1

公开(公告)日：2007-11-29

申请号：US11676452

申请日：2007-02-19

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： H04B15/00

CPC分类号： H04N7/173 ,  H04L9/3247 ,  H04L2209/601 ,  H04L2209/80 ,  H04N21/44222 ,  H04N21/44236 ,  H04N21/4667 ,  H04N21/835 ,  H04N21/84

摘要： Methods, apparatus, and articles of manufacture for media monitoring are disclosed. In particular, the example methods, apparatus, and articles of manufacture generate digital spectral signatures for use in identifying media information. Initially, a frame of media samples is obtained. A first frequency component having a first spectral power and a second frequency component having a second spectral power are identified by performing a spectral transform operation on the frame of media samples. A descriptor of the first frame of media samples is determined based on a comparison of the first spectral power and the second spectral power. A first signature is then generated based on the descriptor.

摘要翻译： 公开了用于媒体监测的方法，装置和制品。 具体地，示例性方法，装置和制品生成用于识别媒体信息的数字频谱签名。 最初，获得一帧媒体样本。 具有第一频谱功率的第一频率分量和具有第二频谱功率的第二频率分量通过对媒体样本的帧执行频谱变换操作来识别。 基于第一光谱功率和第二光谱功率的比较来确定媒体样本的第一帧的描述符。 然后基于描述符生成第一签名。

公开(公告)号：US07100181B2

公开(公告)日：2006-08-29

申请号：US10125577

申请日：2002-04-19

申请人： Venugopal Srinivasan ,  John C. Peiffer ,  Daniel Nelson

发明人： Venugopal Srinivasan ,  John C. Peiffer ,  Daniel Nelson

IPC分类号： H04N9/00 ,  H04N7/16

CPC分类号： H04H60/52 ,  H04H60/32 ,  H04H60/56

摘要： Systems and methods for determining whether a television is on and in as near proximity are provided. An example system includes a sensor, an analog-to-digital converter, and a digital signal processor. The digital signal processor processes a set of digital audio samples detected by the sensor to determine if the sensor is in near proximity to a television in an on state.

摘要翻译： 提供用于确定电视机是否开启和接近的系统和方法。 示例系统包括传感器，模数转换器和数字信号处理器。 数字信号处理器处理由传感器检测到的一组数字音频样本，以确定传感器是否处于处于接通状态的电视机附近。

公开(公告)号：US06621881B2

公开(公告)日：2003-09-16

申请号：US09882089

申请日：2001-06-15

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： H03D100

CPC分类号： H04H20/31 ,  H04H20/33 ,  H04H60/37 ,  H04H60/39 ,  H04H2201/50

摘要： An encoder adds a binary code bit to a block of a signal by selecting a reference frequency within a predetermined bandwidth, a first code frequency having a first predetermined offset from the reference frequency, and a second code frequency having a second predetermined offset from the reference frequency. The spectral amplitude of the signal at the first code frequency is increased to render it a maximum in its neighborhood of frequencies, and the spectral amplitude of the signal at the second code frequency is decreased to render it a minimum in its neighborhood of frequencies. Alternatively, the phase of the portion of the signal at one of the first and second code frequencies whose spectral amplitude is smaller may be modified so as to differ from the phase of the reference signal component within a predetermined amount. A decoder decodes the binary bit.

摘要翻译： 编码器通过选择预定带宽内的参考频率，具有从参考频率开始的第一预定偏移的第一编码频率和与参考频率具有第二预定偏移的第二编码频率，将二进制码位加到信号块上 频率。 在第一编码频率处的信号的频谱幅度被增加以使其在频率附近最大，并且降低第二编码频率处的信号的频谱幅度，使其在频率附近最小。 或者，可以修改频谱幅度较小的第一和第二代码频率之一处的信号部分的相位，以便与预定量内的参考信号分量的相位不同。 解码器解码二进制位。

公开(公告)号：US06504870B2

公开(公告)日：2003-01-07

申请号：US09882085

申请日：2001-06-15

申请人： Venugopal Srinivasan

发明人： Venugopal Srinivasan

IPC分类号： H04B166

CPC分类号： H04H20/31 ,  H04H20/33 ,  H04H60/37 ,  H04H60/39 ,  H04H2201/50

摘要： An encoder is arranged to add a binary code bit to a block of a signal by selecting, within the block, (i) a reference frequency within the pretermined signal bandwidth, (ii) a first code frequency having a first predetermined offset from the reference frequency, and (iii) a second code frequency having a second predetermined offset from the reference frequency. The spectral amplitude at each of the first and second code frequencies may be respectively modified to be a maximum in a first neighborhood of frequencies extending about the first code frequency and a minimum in a second neighborhood of frequencies extending about the second code frequency. Alternatively, the phase of a signal component at one of the first and second code frequencies may be changed relative to a reference signal component.

摘要翻译： 编码器被布置成通过在该块内选择（i）预定义信号带宽内的参考频率，（ii）具有与参考的第一预定偏移量的第一码频率，来向信号块添加二进制码位 频率，和（iii）具有与参考频率的第二预定偏移的第二代码频率。 在第一和第二代码频率中的每一个处的频谱幅度可以分别被修改为在围绕第一代码频率延伸的第一频率附近的频率和在围绕第二代码频率延伸的第二频率附近的最小值中的最大值。 或者，可以相对于参考信号分量改变第一和第二代码频率中的一个处的信号分量的相位。

公开(公告)号：US08966521B2

公开(公告)日：2015-02-24

申请号：US13827943

申请日：2013-03-14

申请人： Padmanabhan Soundararajan ,  Venugopal Srinivasan ,  Alexander Topchy

发明人： Padmanabhan Soundararajan ,  Venugopal Srinivasan ,  Alexander Topchy

IPC分类号： H04N7/10 ,  H04N7/025 ,  H04N7/16 ,  H04N5/783 ,  H04N21/41 ,  H04N21/435

CPC分类号： H04N21/6587 ,  G06Q30/00 ,  G06Q30/0241 ,  H04N21/4122 ,  H04N21/41407 ,  H04N21/42204 ,  H04N21/435 ,  H04N21/4367 ,  H04N21/812

摘要： Methods and apparatus to present supplemental media on a second screen are disclosed. An example method includes obtaining, at a digital media device, media identifying data from audio data of a portion of first media being presented via the digital media device; determining that the portion of the first media is an advertisement based on the media identifying data; detecting, at the digital media device, a command to cause the digital media device to skip the portion of the first media; and providing an indication to a second device in response to detecting the command, the indication to cause the second device to present second media.

摘要翻译： 公开了在第二屏幕上呈现补充介质的方法和装置。 示例性方法包括在数字媒体设备处获取从经由数字媒体设备呈现的第一媒体的一部分的音频数据识别数据的媒体; 基于所述媒体识别数据确定所述第一媒体的所述部分是广告; 在所述数字媒体设备处检测使所述数字媒体设备跳过所述第一媒体的所述部分的命令; 以及响应于检测到所述命令向第二设备提供指示，以使得所述第二设备呈现第二媒体的指示。

公开(公告)号：US20140254880A1

公开(公告)日：2014-09-11

申请号：US13787314

申请日：2013-03-06

申请人： Venugopal Srinivasan ,  Padmanabhan Soundararajan

发明人： Venugopal Srinivasan ,  Padmanabhan Soundararajan

IPC分类号： G06T7/00

CPC分类号： G01B11/22 ,  G06K9/00335 ,  G06K9/00362 ,  G06K9/52 ,  G06K9/6201 ,  G06T7/248 ,  G06T7/50 ,  G06T7/60 ,  G06T7/70 ,  G06T7/74 ,  G06T2207/10016 ,  G06T2207/10028 ,  G06T2207/30196 ,  H04N7/18

摘要： Methods, apparatus, and articles of manufacture to monitor environments are disclosed. An example method includes analyzing a first depth value corresponding to a coordinate of an object of an image captured by a depth sensor, the first depth value having been captured with the depth sensor positioned at a first angle relative to a reference axis; moving the depth sensor to a second angle relative to the reference axis, the second angle being different than the first angle; triggering capture of a second depth value at the coordinate with the depth sensor positioned at the second angle; and calculating a depth gradient for the coordinate based on the first and second depth values.

摘要翻译： 公开了监测环境的方法，装置和制品。 示例性方法包括分析与由深度传感器捕获的图像的对象的坐标相对应的第一深度值，所述第一深度值已经被相对于参考轴位于第一角度的深度传感器捕获; 将所述深度传感器相对于所述参考轴线移动到第二角度，所述第二角度不同于所述第一角度; 触发在位于第二角度的深度传感器的坐标处捕获第二深度值; 以及基于所述第一和第二深度值计算所述坐标的深度梯度。

公开(公告)号：US08554545B2

公开(公告)日：2013-10-08

申请号：US13341092

申请日：2011-12-30

申请人： Venugopal Srinivasan ,  Alexander Pavlovich Topchy

发明人： Venugopal Srinivasan ,  Alexander Pavlovich Topchy

IPC分类号： G10L19/14

CPC分类号： H04H60/37 ,  G11B20/10 ,  H04H20/31 ,  H04H60/58

摘要： Methods and apparatus to extract data encoded in media content are disclosed. An example method includes sampling a media content signal to generate digital samples, determining a frequency domain representation of the digital samples, determining a first rank of a first frequency in the frequency domain representation, determining a second rank of a second frequency in the frequency domain representation, combining the first rank and the second rank with a set of ranks to create a combined set of ranks, comparing the combined set of ranks to a set of reference sequences, determining a data represented by the combined set of ranks based on the comparison, and storing the data in a memory device.

摘要翻译： 公开了提取在媒体内容中编码的数据的方法和装置。 一种示例性方法包括对媒体内容信号进行采样以产生数字样本，确定数字样本的频域表示，确定频域表示中的第一频率的第一等级，确定频域中的第二频率的第二等级 表示，将第一等级和第二等级与一组等级组合以创建组合的一组队列，将组合的队列与一组参考序列进行比较，基于比较来确定由组合的队列组合表示的数据 ，并将数据存储在存储器件中。

公开(公告)号：US20130259380A1

公开(公告)日：2013-10-03

申请号：US13434330

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

摘要： Methods and apparatus to count people in images are disclosed. An example method includes generating a first fluctuation factor for a first frame by averaging fluctuation values of a random set of pixels of the first frame; generating a second fluctuation factor for a person indication area of the first frame by averaging fluctuation values of pixels of the person indication area; and marking the person indication area as a false positive when the second fluctuation factor is less than or equal to the first fluctuation factor.

摘要翻译： 披露了图像中计数人的方法和设备。 示例性方法包括：通过对第一帧的随机的像素集合的波动值进行平均来生成第一帧的第一波动因子; 通过平均人员指示区域的像素的波动值来生成第一帧的人物指示区域的第二波动因子; 并且当所述第二波动因子小于或等于所述第一波动因子时，将所述人指示区域标记为假阳性。

公开(公告)号：US08548373B2

公开(公告)日：2013-10-01

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： H04H60/44

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接收到的未被压缩; 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。