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公开(公告)号：EP3182734A3
公开(公告)日：2017-09-13
申请号：EP16201960.8
申请日：2016-12-02
申请人： Thomson Licensing
IPC分类号： H04S7/00
CPC分类号： H04S7/301 , H04R1/406 , H04R5/02 , H04R5/04 , H04R29/002 , H04R2205/024 , H04R2499/11
摘要： A smartphone having two microphones is used for determining the direction of a loudspeaker in a surround system setup. This is performed using smartphone rotation in azimuth and polar angle direction while capturing in its microphones a test signal from a current one of the loudspeakers. From the microphone signals a corresponding TDOA value is calculated, and the smartphone is rotated until that TDOA value is nearly zero, resulting in a loudspeaker direction information.
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2.发明公开METHOD FOR USING A MOBILE DEVICE EQUIPPED WITH AT LEAST TWO MICROPHONES FOR DETERMINING THE DIRECTION OF LOUDSPEAKERS IN A SETUP OF A SURROUND SOUND SYSTEM 审中-公开使用装有至少两个麦克风的移动装置来确定周围声音系统设置中的扬声器方向的方法
公开(公告)号：EP3182734A2
公开(公告)日：2017-06-21
申请号：EP16201960.8
申请日：2016-12-02
申请人： Thomson Licensing
IPC分类号： H04S7/00
CPC分类号： H04S7/301 , H04R1/406 , H04R5/02 , H04R5/04 , H04R29/002 , H04R2205/024 , H04R2499/11
摘要： A smartphone having two microphones is used for determining the direction of a loudspeaker in a surround system setup. This is performed using smartphone rotation in azimuth and polar angle direction while capturing in its microphones a test signal from a current one of the loudspeakers. From the microphone signals a corresponding TDOA value is calculated, and the smartphone is rotated until that TDOA value is nearly zero, resulting in a loudspeaker direction information.
摘要翻译： 具有两个麦克风的智能手机用于确定环绕系统设置中扬声器的方向。 这是利用智能手机在方位角和极角方向上的旋转来执行的，同时在其麦克风中捕捉来自当前扬声器的测试信号。 从麦克风信号计算相应的TDOA值，并且智能手机旋转直到TDOA值几乎为零，从而产生扬声器方向信息。
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3.发明公开METHOD AND APPARATUS FOR DETERMINING IN A 2ND SCREEN DEVICE WHETHER THE PRESENTATION OF WATERMARKED AUDIO CONTENT RECEIVED VIA AN ACOUSTIC PATH FROM A 1ST SCREEN DEVICE HAS BEEN STOPPED 有权用于确定第二屏幕设备是否WATER-LABEL的制备中，在声学路径的方法和装置所接收的音频内容从第一屏幕设备已停止
公开(公告)号：EP3129983A1
公开(公告)日：2017-02-15
申请号：EP15710807.7
申请日：2015-03-20
申请人： Thomson Licensing
IPC分类号： G10L19/018
CPC分类号： G10L19/018
摘要： For determining in a 2nd screen whether or not watermarked audio content received from a 1st screen has been stopped, a watermark symbol detection in the received audio content and a related detection strength value determination is carried out. In case no watermark symbol has been detected, a received expected detection strength value is compared with a detection strength threshold value. If the expected detection strength value is greater than the detection strength threshold value, it is decided that content has been stopped in the 1st screen device. If not, it is decided that content has not been stopped in the 1st screen device. In case a watermark symbol has been detected, the detection strength value is compared with the expected detection strength value, a correspondingly updated detection strength threshold value is calculated, and it is decided that the content has not been stopped in the 1st screen device.
摘要翻译： 对于在第二画面是否水印从第一屏接收到的音频内容已停止开采的确定性，在接收到的音频内容的水印符号检测和相关的检测强度值进行判断。 在情况下，没有水印符号已被检测到，接收到的预期的检测强度值与一个检测强度阈值进行比较。 如果预期的检测强度值比检测强度阈值时，则判定没有内容已经在第一屏设备已经停止。 如果不是，它决定并处理不当的内容在第一屏设备已经停止。 在情况下，水印符号已被检测，检测强度值与预期的检测强度值，相应更新的检测强度阈值的计算相比，它是决定做了内容并没有在第一屏设备已经停止。
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4.发明公开METHOD AND SYSTEM FOR PROTECTING BY WATERMARKING AGAINST NON-AUTHORISED USE ORIGINAL AUDIO OR VIDEO DATA WHICH ARE TO BE PRESENTED 审中-公开保护水MARK MARK免受未经授权的使用方法和系统呈现原始音频或视频数据
公开(公告)号：EP2601756A1
公开(公告)日：2013-06-12
申请号：EP11737948.7
申请日：2011-07-26
申请人： Thomson Licensing
CPC分类号： H04L9/28 , G06T1/0071 , G09C5/00 , H04L9/12 , H04L9/3297 , H04L2209/608
摘要： For protecting by watermarking against non-authorised use, e.g. non-authorised recording or copying, original audio or video data which are to be presented in a digital cinema, a sender site generates from the original signal at least two differently pre-watermarked versions for successive blocks or frames of the signal, wherein these versions are derived by applying a repeated watermark symbol value to a version and different watermark symbol values to the different versions. The pre-watermarked signal versions are encrypted and transferred e.g. as data files to a digital cinema unit in which they are decrypted. According to the values of a desired watermark information word, corresponding frames or blocks from said decrypted and pre-watermarked versions are assembled in a successive manner, so as to provide and present a watermarked version of said original audio or video signal that carries said watermark information word.
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5.发明公开METHOD AND APPARATUS FOR DETECTING WHICH ONE OF SYMBOLS OF WATERMARK DATA IS EMBEDDED IN A RECEIVED SIGNAL 有权方法和设备，用于识别水印数据符号嵌入在接收信号
公开(公告)号：EP2569766A1
公开(公告)日：2013-03-20
申请号：EP11716274.3
申请日：2011-04-27
申请人： Thomson Licensing
CPC分类号： G10L19/018
摘要： Watermark symbol detection requires a detection metric for deciding at decoder side which candidate symbol is embedded inside the audio or video signal content. The invention provides an improved detection metric processing that achieves a reliable detection of watermarks in the presence of additional noise and echoes, and that is adaptive to signal reception conditions and requires a decreased computational power. This is performed by taking into account the information contained in the echoes of the received audio signal in the decision metric and comparing it with the corresponding metric obtained from decoding a non-marked audio signal, based on recursive calculation of false positive detection rates of peaks in correlation result values. The watermark symbol corresponding to the reference sequence having the lowest false positive error is selected as the embedded one.
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公开(公告)号：EP3182734B1
公开(公告)日：2018-08-22
申请号：EP16201960.8
申请日：2016-12-02
申请人： Thomson Licensing
CPC分类号： H04S7/301 , H04R1/406 , H04R5/02 , H04R5/04 , H04R29/002 , H04R2205/024 , H04R2499/11
摘要： A smartphone having two microphones is used for determining the direction of a loudspeaker in a surround system setup. This is performed using smartphone rotation in azimuth and polar angle direction while capturing in its microphones a test signal from a current one of the loudspeakers. From the microphone signals a corresponding TDOA value is calculated, and the smartphone is rotated until that TDOA value is nearly zero, resulting in a loudspeaker direction information.
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7.发明授权METHOD AND APPARATUS FOR DETERMINING IN A 2ND SCREEN DEVICE WHETHER THE PRESENTATION OF WATERMARKED AUDIO CONTENT RECEIVED VIA AN ACOUSTIC PATH FROM A 1ST SCREEN DEVICE HAS BEEN STOPPED 有权用于在第二屏幕设备中确定是否通过来自第一屏幕设备的声音路径接收到的水印音频内容的呈现的方法和设备已被停止
公开(公告)号：EP3129983B1
公开(公告)日：2018-05-09
申请号：EP15710807.7
申请日：2015-03-20
申请人： Thomson Licensing
IPC分类号： G10L19/018
CPC分类号： G10L19/018
摘要： For determining in a 2nd screen whether or not watermarked audio content received from a 1st screen has been stopped, a watermark symbol detection in the received audio content and a related detection strength value determination is carried out. In case no watermark symbol has been detected, a received expected detection strength value is compared with a detection strength threshold value. If the expected detection strength value is greater than the detection strength threshold value, it is decided that content has been stopped in the 1st screen device. If not, it is decided that content has not been stopped in the 1st screen device. In case a watermark symbol has been detected, the detection strength value is compared with the expected detection strength value, a correspondingly updated detection strength threshold value is calculated, and it is decided that the content has not been stopped in the 1st screen device.
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8.发明公开METHOD AND APPARATUS FOR EMBEDDING AND REGAINING WATERMARKS IN AN AMBISONICS REPRESENTATION OF A SOUND FIELD 审中-公开在声场的声子表示中嵌入和保存水印的方法和设备
公开(公告)号：EP3274990A1
公开(公告)日：2018-01-31
申请号：EP16705498.0
申请日：2016-02-18
申请人： Thomson Licensing
IPC分类号： G10L19/018 , G11B20/00 , H04S3/00 , G10L19/008
CPC分类号： G10L19/018 , G10L19/008 , H04S3/008 , H04S2420/11
摘要： As a potential format for next-generation audio, techniques for embedding digital watermarks in the Higher Order Ambisonics (HOA) representation of a sound field have been proposed. The inventive embedding method is adapted for water-marking a two-dimensional or three-dimensional Ambisonics representation of a sound field, wherein the Ambisonics representation is decomposed into directional signals and ambient components and includes estimated dominant directions, and wherein the order of the ambient components can be reduced, and wherein watermark information data are embedded in the directional signals, and at receiver side are regained from the watermarked directional signals.
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9.发明公开METHOD AND APPARATUS FOR DETERMINING WATERMARK SYMBOLS IN A RECEIVED AUDIO SIGNAL THAT CAN CONTAIN ECHOES, REVERBERATION AND/OR NOISE 审中-公开方法和设备与之相呼应，大厅和/或噪音在接收到的音频信号WATER MARK标记的测定
公开(公告)号：EP2981957A1
公开(公告)日：2016-02-10
申请号：EP14713840.8
申请日：2014-03-28
申请人： Thomson Licensing
IPC分类号： G10L19/018
CPC分类号： G10L19/018 , G06F2221/0733 , G11B20/00884 , G11B20/00891
摘要： Following transmission of a watermarked audio signal over an acoustic path causing echoes, reverberation and/or noise, watermark detection correlation result peak values are concentrated within a limited temporal range around main correlation result peaks, which limited temporal range is much smaller than the total correlation length. The watermark detection is based on the following: given n p correlation result peak values v =( v 1 , v 2 , ..., v n p ) in an average or expected probability distribution for correlation result values for unmarked content, the probability is calculated that within windows covering the limited temporal range there are n p or more values from a correlation result value set greater than or equal to these peaks v .
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10.发明公开PROVIDING A WATERMARKED DECODED AUDIO OR VIDEO SIGNAL DERIVED FROM A WATERMARKED AUDIO OR VIDEO SIGNAL THAT WAS LOW BIT RATE ENCODED AND DECODED 审中-公开是提供从由低比特率和解码经编码一个水印的音频或视频信号中的水印的解码的音频或视频信号
公开(公告)号：EP2577601A1
公开(公告)日：2013-04-10
申请号：EP11720470.1
申请日：2011-05-18
申请人： Thomson Licensing
CPC分类号： G06T1/005 , G10L19/018 , H04L2209/608
摘要： Various audio signal watermarking systems are known, which are also applied to digitally encoded audio signals. However, in current audio signal watermarking systems the watermark signal and its watermark payload do not survive very low bit rate audio coding, in particular parametric coding. According to the invention, a watermarked uncompressed audio signal bitstream is low-bit rate compressed, but the watermarking is removed and the watermark's payload only is transmitted together with the compressed audio signal bitstream. At decoder side, the received audio signal bitstream is de-compressed and watermarked again using the transmitted watermark payload. Advantageously, it does not matter that the compressed bitstream is not watermarked because the compressed bitstream can be encrypted prior to transmission.
摘要翻译： 各种音频信号的水印系统是已知的，即，被施加到数字编码的音频信号。 然而，在当前的音频信号水印系统水印信号及其水印有效载荷没有生存的非常低比特率音频编码，特别是参数编码。 。根据本发明，带水印的未压缩音频信号的比特流是低比特率压缩，但水印被去除，水印的有效载荷仅是与所述压缩的音频信号的比特流的反式mitted在一起。 在解码器侧，接收到的音频信号的比特流被去压缩和水印再次使用反式mitted水印有效负载。 有利的是，没关系没压缩比特流没有水印，因为压缩比特流可以在传输之前进行加密。
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