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公开(公告)号：US10937116B2
公开(公告)日：2021-03-02
申请号：US15893216
申请日：2018-02-09
IPC分类号： G06K9/00 , G06T1/00 , H04N21/443 , H04N21/439 , H04N21/8358 , H04N19/467 , H04N19/42
摘要： Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to implement power efficient detection of watermarks in media signals are disclosed. Example metering apparatus disclosed herein include detector means for detecting watermarks in a media signal. Disclosed example metering apparatus also include controller means for operating the detector means to (1) detect a first watermark in the media signal, and (2) cycle between sleep intervals and active intervals to detect a second watermark at a second location in the media signal relative to a first location of the first watermark in the media signal after the first watermark has been verified.
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2.发明授权公开(公告)号：US12033642B1
公开(公告)日：2024-07-09
申请号：US18363099
申请日：2023-08-01
IPC分类号： G10L19/018 , G10L19/02 , G10L25/51
CPC分类号： G10L19/018 , G10L19/0204 , G10L25/51
摘要： Methods and apparatus are disclosed for supplementing partially readable and/or inaccurate codes. An example apparatus includes a watermark analyzer to select a first watermark and a second watermark decoded from media; a comparator to compare a first decoded timestamp of the first watermark to a second decoded timestamp of the second watermark; and a timestamp adjuster to adjust the second decoded timestamp based on the first decoded timestamp of the second watermark when at least a threshold number of symbols of the second decoded timestamp match corresponding symbols of the first decoded timestamp.
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公开(公告)号：US11720990B2
公开(公告)日：2023-08-08
申请号：US17187453
申请日：2021-02-26
IPC分类号： G06K9/00 , G06T1/00 , H04N21/443 , H04N21/439 , H04N21/8358 , H04N19/467 , H04N19/42
CPC分类号： G06T1/0021 , H04N19/42 , H04N19/467 , H04N21/4394 , H04N21/4436 , H04N21/8358 , G06T2200/28 , G06T2201/0065
摘要： Example apparatus disclosed herein include a watermark detector to detect watermarks in a media signal. Disclosed example apparatus also include a controller to operate the watermark detector to (1) detect a first watermark in the media signal, and (2) cycle between sleep intervals and active intervals based on a repetition rate of the watermarks in the media signal to perform a detection operation for a second watermark at a second location in the media signal relative to a first location of the first watermark in the media signal. In some examples, the controller is to search a buffer of prior detected watermark symbols to detect a third watermark at a third location prior to the second location in the media signal in response to the second watermark not being detected at the second location in the media signal.
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4.发明申请公开(公告)号：US20230116206A1
公开(公告)日：2023-04-13
申请号：US17986578
申请日：2022-11-14
IPC分类号： G10L19/018 , G10L19/02 , G10L25/51
摘要： Methods and apparatus are disclosed for supplementing partially readable and/or inaccurate codes. An example apparatus includes a watermark analyzer to select a first watermark and a second watermark decoded from media; a comparator to compare a first decoded timestamp of the first watermark to a second decoded timestamp of the second watermark; and a timestamp adjuster to adjust the second decoded timestamp based on the first decoded timestamp of the second watermark when at least a threshold number of symbols of the second decoded timestamp match corresponding symbols of the first decoded timestamp.
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公开(公告)号：US20160353124A1
公开(公告)日：2016-12-01
申请号：US15231439
申请日：2016-08-08
IPC分类号： H04N19/467 , H04N19/42 , G06T1/00
CPC分类号： G06T1/0021 , G06T2200/28 , G06T2201/0065 , H04N19/42 , H04N19/467 , H04N21/4394 , H04N21/4436 , H04N21/8358
摘要： Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to implement power efficient detection of watermarks in media signals are disclosed. Example watermark detection methods disclosed herein include initiating a first search interval in which to attempt to detect watermarks in a media signal. Disclosed example watermark detection methods also initiating a sleep mode upon expiration of the first search interval in response to no valid watermarks being detected during the first search interval. Disclosed example watermark detection methods further include, upon expiration of a first sleep interval after initiation of the sleep mode, initiating a second search interval.
摘要翻译： 公开了在媒体信号中实现水印功率有效检测的方法，装置，系统和制品（例如，物理存储介质）。 本文公开的示例性水印检测方法包括启动在其中尝试检测媒体信号中的水印的第一搜索间隔。 公开的示例性水印检测方法还响应于在第一搜索间隔期间没有检测到有效水印而在第一搜索间隔期满时启动睡眠模式。 公开的示例性水印检测方法还包括：在睡眠模式开始之后的第一睡眠间隔期满时，启动第二搜索间隔。
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公开(公告)号：US09418395B1
公开(公告)日：2016-08-16
申请号：US14587995
申请日：2014-12-31
CPC分类号： G06T1/0021 , G06T2200/28 , G06T2201/0065 , H04N19/42 , H04N19/467 , H04N21/4394 , H04N21/4436 , H04N21/8358
摘要： Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to implement power efficient detection of watermarks in media signals are disclosed. Example watermark detection methods disclosed herein include operating a watermark detector in a first operating mode to search for a first watermark in a media signal. Such disclosed example methods also include, in response to detecting the first watermark, determining whether the first watermark satisfies a first condition. Such disclosed example methods further include, in response to determining the first watermark satisfies the first condition, operating the watermark detector in a second operating mode in which the watermark detector cycles between a sleep interval and an active interval to detect a second watermark at a second location in the media signal relative to a first location of the first watermark in the media signal.
摘要翻译： 公开了在媒体信号中实现水印功率有效检测的方法，装置，系统和制品（例如，物理存储介质）。 本文公开的示例性水印检测方法包括以第一操作模式操作水印检测器以搜索媒体信号中的第一水印。 这样公开的示例方法还包括响应于检测到第一水印，确定第一水印是否满足第一条件。 这样公开的示例性方法还包括：响应于确定第一水印满足第一条件，在第二操作模式中操作水印检测器，其中水印检测器在睡眠间隔和活动间隔之间循环，以在第二个水印检测第二水印 媒体信号中相对于媒体信号中的第一水印的第一位置的位置。
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7.发明授权公开(公告)号：US09317865B2
公开(公告)日：2016-04-19
申请号：US14253646
申请日：2014-04-15
发明人： Jack C. Crystal , James M. Jensen , William K. Krug , Wendell D. Lynch , Alan R. Neuhauser , Eugene L. Flanagan, III
CPC分类号： G06Q30/0201 , G06Q30/02 , H04H60/31 , H04H60/45 , H04H60/52 , H04H2201/90
摘要： Methods and apparatus for research data gathering with a portable monitor and a stationary device are described. An example method includes gathering, via a stationary monitoring system, first data concerning exposure to media output by a media receiver, wherein gathering the first data comprises collecting a first code encoded in the media, gathering second data concerning exposure to the media output by the media receiver with a portable monitor carried on the person of a user, wherein the second data comprises a second code encoded in the media, gathering, via the portable monitor, location data encoded in the media by the stationary monitoring system, the location data providing information on a physical location of the portable monitor, and producing the audience measurement data concerning exposure to the media output by the receiver from the first data, the second data, and the location data.
摘要翻译： 描述了利用便携式监视器和固定装置进行研究数据采集的方法和装置。 一种示例性方法包括：通过静态监视系统收集关于由媒体接收器输出的媒体曝光的第一数据，其中收集第一数据包括收集在媒体中编码的第一代码，收集关于通过媒体输出的媒体输出的曝光的第二数据 具有携带在用户身上的便携式监视器的媒体接收器，其中第二数据包括在媒体中编码的第二代码，经由便携式监视器收集由固定监视系统编码在媒体中的位置数据，提供位置数据 关于便携式监视器的物理位置的信息，以及从第一数据，第二数据和位置数据产生关于由接收器输出的媒体的曝光的观众测量数据。
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公开(公告)号：US12073485B2
公开(公告)日：2024-08-27
申请号：US18335076
申请日：2023-06-14
IPC分类号： G06K9/00 , G06T1/00 , H04N19/42 , H04N19/467 , H04N21/439 , H04N21/443 , H04N21/8358
CPC分类号： G06T1/0021 , H04N19/42 , H04N19/467 , H04N21/4394 , H04N21/4436 , H04N21/8358 , G06T2200/28 , G06T2201/0065
摘要： Example apparatus disclosed herein include a watermark detector to detect watermarks in a media signal. Disclosed example apparatus also include a controller to operate the watermark detector to (1) detect a first watermark in the media signal, and (2) cycle between sleep intervals and active intervals based on a repetition rate of the watermarks in the media signal to perform a detection operation for a second watermark at a second location in the media signal relative to a first location of the first watermark in the media signal. In some examples, the controller is to search a buffer of prior detected watermark symbols to detect a third watermark at a third location prior to the second location in the media signal in response to the second watermark not being detected at the second location in the media signal.
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9.发明公开公开(公告)号：US20240146998A1
公开(公告)日：2024-05-02
申请号：US18498618
申请日：2023-10-31
发明人： Wendell D. Lynch , Christen V. Nielsen , Alexander Topchy , Khaldun Karazoun , Jeremey M. Davis
IPC分类号： H04N21/439 , G10L19/018 , H04N21/238 , H04N21/262
CPC分类号： H04N21/4394 , G10L19/018 , H04N21/238 , H04N21/262 , H04N21/4398
摘要： An example apparatus includes at least one processor circuitry to execute or instantiate instructions to identify a media file is scheduled to be accessed by a media device within a first time period after a publishing of the media file was published by a media provider; select a first symbol to be inserted at a first symbol position and a second symbol to be inserted at a second symbol position to identify an access of the media file is to be accessed by the media device within the first time period, the first symbol position in a first bit sequence, the second symbol position in a second bit sequence; encode the first bit sequence in the media file on a first encoding layer of a multilayered watermark, and encode the second bit sequence in the media file on a second encoding layer of the multilayered watermark.
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公开(公告)号：US11842422B2
公开(公告)日：2023-12-12
申请号：US17246239
申请日：2021-04-30
发明人： Vladimir Kuznetsov , David Gish , Wendell D. Lynch
IPC分类号： G06K9/00 , G06T1/00 , H04N19/467
CPC分类号： G06T1/0085 , H04N19/467
摘要： Methods, apparatus, systems and articles of manufacture to extend a timestamp range supported by a watermark without breaking backwards compatibility are disclosed. An example watermark encoder includes a counter to increment symbols of a watermark timestamp and a controller to control the counter to increment the symbols of the watermark timestamp based on a key, the controller to cause the counter to restrict ones of the symbol values to increment over one of a first range of symbol values or a second range of symbol values based on a value of the key, the second range of symbol values different from the first range of symbol values.
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