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公开(公告)号：US20080152128A1
公开(公告)日：2008-06-26
申请号：US11869507
申请日：2007-10-09
CPC分类号： H04H20/31 , G06T1/0028 , G06T1/005 , G06T2200/28 , G06T2201/0052 , G06T2201/0065 , G10L19/018
摘要： The invention comprises an encoder for encoding a stegotext and a decoder for decoding the encoded stegotext, the stegotext being generated by modulating the log power spectrogram of a covertext signal with at least one key, the or each key having been added or subtracted in the log domain to the covertext power spectrogram in accordance with the data of the watermark code with which the stegotext was generated, and the modulated power spectrogram having been returned into the original domain of the covertext. The decoder carries out Fast Fourier Transformation and rectangular polar conversion of the stegotext signal so as to transform the stegotext signal into the log power spectrogram domain; subtracts in the log power domain positive and negative multiples of the key or keys from blocks of the log power spectrogram and evaluates the probability of the results of such subtractions representing an unmodified block of covertext in accordance with a predetermined statistical model.
摘要翻译： 本发明包括一个编码器，用于对一个熟悉的编码器和一个解码器进行编码，该编码器通过用至少一个键调制覆盖文本信号的对数功率谱图来生成，该信号是通过在日志中被加或减 根据生成了嘟嘟声的水印码的数据，将调制后的功率谱图返回到覆盖文本的原始域。 解码器执行快速傅里叶变换和stegotext信号的矩形极化转换，以将stegotext信号转换成对数功率谱图域; 从对数功率谱图的块中减去对数功率域的键或键的正负的倍数，并根据预定的统计模型来评估表示未修改的覆盖文本块的这种减法的结果的概率。
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公开(公告)号：US07917766B2
公开(公告)日：2011-03-29
申请号：US11869507
申请日：2007-10-09
IPC分类号： H04L9/00
CPC分类号： H04H20/31 , G06T1/0028 , G06T1/005 , G06T2200/28 , G06T2201/0052 , G06T2201/0065 , G10L19/018
摘要： The invention comprises an encoder for encoding a stegotext and a decoder for decoding the encoded stegotext, the stegotext being generated by modulating the log power spectrogram of a covertext signal with at least one key, the or each key having been added or subtracted in the log domain to the covertext power spectrogram in accordance with the data of the watermark code with which the stegotext was generated, and the modulated power spectrogram having been returned into the original domain of the covertext. The decoder carries out Fast Fourier Transformation and rectangular polar conversion of the stegotext signal so as to transform the stegotext signal into the log power spectrogram domain; subtracts in the log power domain positive and negative multiples of the key or keys from blocks of the log power spectrogram and evaluates the probability of the results of such subtractions representing an unmodified block of covertext in accordance with a predetermined statistical model.
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公开(公告)号：US20120080611A1
公开(公告)日：2012-04-05
申请号：US12865432
申请日：2009-02-02
CPC分类号： G01N21/49 , G01J1/0242 , G01J1/0266 , G01J3/02 , G01J3/0208 , G01J3/0218 , G01J3/0229 , G01J3/0291 , G01J3/4412 , G01N15/0205 , G01N21/51 , G01N21/53 , G01N21/532 , G01N21/64 , G01N2015/03 , G01N2021/4792 , G01N2021/6419 , G01N2021/6421 , G01N2021/6476
摘要： A photometric device for investigating a sample, comprises an array of radiation sources that are spaced apart from one another, and which are operable to generate radiation that differs from that generated by the other radiation sources in the array. The device includes a lens arrangement for focusing the radiation at a region of space where a sample may be located for example by means of a sample holder, and at least one detector for receiving radiation from the region of space. Preferably, a number of detectors are employed that are spaced apart from one another, and especially about an axis of the device, so that one radiation detector can detect radiation transmitted by the sample and the other detectors can detect radiation scattered by it. The radiation sources may be time division multiplexed so that in each time slot the detectors receive radiation originating from each radiation source. In an alternative embodiment, the radiation from the region of space may be transmitted to the sample via a beam homogeniser, for example an optical waveguide in the form of an optical fibre, which may be used to reduce or remove speckle where laser diodes are employed as the radiation sources. The device may be used to determine the particle size distribution of particles in a sample by a method employing Bayesian inference.
摘要翻译： 用于调查样品的测光装置包括彼此间隔开的辐射源阵列，并且其可操作以产生与由阵列中的其它辐射源产生的辐射不同的辐射。 该装置包括用于将辐射聚焦在例如借助于样品保持器的样品可能位于的空间区域处的透镜装置，以及用于接收来自空间区域的辐射的至少一个检测器。 优选地，使用彼此间隔开的多个检测器，特别是围绕设备的轴线，使得一个辐射检测器可以检测由样品传输的辐射，并且其它检测器可以检测由其散射的辐射。 辐射源可以被时分复用，使得在每个时隙中，检测器接收来自每个辐射源的辐射。 在替代实施例中，来自空间区域的辐射可以经由光束均化器（例如，光纤形式的光波导）传输到样品，该光波导可用于减少或去除使用激光二极管的斑点 作为辐射源。 该装置可用于通过采用贝叶斯推理的方法来确定样品中颗粒的粒度分布。
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公开(公告)号：US20090190755A1
公开(公告)日：2009-07-30
申请号：US11869539
申请日：2007-10-09
CPC分类号： H04H20/31 , G06T1/0028 , G06T1/005 , G06T2200/28 , G06T2201/0052 , G06T2201/0065 , G10L19/018
摘要： The invention comprises an encoder for encoding a stegotext and a decoder for decoding the encoded stegotext, the stegotext being generated by modulating the log power spectrogram of a covertext signal with at least one key, the or each key having been added or subtracted in the log domain to the covertext power spectrogram in accordance with the data of the watermark code with which the stegotext was generated, and the modulated power spectrogram having been returned into the original domain of the covertext. The decoder carries out Fast Fourier Transformation and rectangular polar conversion of the stegotext signal so as to transform the stegotext signal into the log power spectrogram domain; subtracts in the log power domain positive and negative multiples of the key or keys from blocks of the log power spectrogram and evaluates the probability of the results of such subtractions representing an unmodified block of covertext in accordance with a predetermined statistical model.
摘要翻译： 本发明包括一个编码器，用于对一个熟悉的编码器和一个解码器进行编码，该编码器通过用至少一个键调制覆盖文本信号的对数功率谱图来生成，该信号是通过在日志中被加或减 根据生成了嘟嘟声的水印码的数据，将调制后的功率谱图返回到覆盖文本的原始域。 解码器执行快速傅里叶变换和stegotext信号的矩形极化转换，以将stegotext信号转换成对数功率谱图域; 从对数功率谱图的块中减去对数功率域的键或键的正负的倍数，并根据预定的统计模型来评估表示未修改的覆盖文本块的这种减法的结果的概率。
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公开(公告)号：US07278574B2
公开(公告)日：2007-10-09
申请号：US11710471
申请日：2007-02-26
申请人： Roger Fane Sewell , Robert Jones
发明人： Roger Fane Sewell , Robert Jones
CPC分类号： G06K7/10544 , G06K7/10 , G06K19/06 , G06K19/06028 , G06Q20/203
摘要： A barcode reader and processing circuitry are disclosed for identifying a position of a cylinder rod, for example, along a path of movement. The barcode is marked on a surface of the rod and constitutes a series of markings extending along a portion of the length of the rod. The markings represent encoded information based on numbers calculated with a random number generator, and are grouped into subsets, each of which corresponds to a particular rod position. A portion of the rod including a subset of barcode markings is exposed to light emitted from the reader. Light reflected off the barcode is sensed with an array of photosensors provided in the reader. The photosensors generate electrical signals, and using Bayesian probability, a likely subset of markings is determined corresponding to the received electrical signals. Once identified, the markings subset is associated with a location corresponding to the position of the rod. A barcode reader is also described that is relatively easy to assemble and provides uniform illumination of the barcode.
摘要翻译： 公开了一种条形码读取器和处理电路，用于识别例如沿运动路径的气缸杆的位置。 条形码被标记在杆的表面上，并且构成沿杆的长度的一部分延伸的一系列标记。 标记表示基于用随机数生成器计算的数字的编码信息，并且被分组成子集，每个子集对应于特定的杆位置。 包括条形码标记子集的杆的一部分暴露于从读取器发出的光。 利用读取器中提供的光电传感器阵列来感测条形码反射的光。 光传感器产生电信号，并且使用贝叶斯概率，可能的子集的标记被确定对应于所接收的电信号。 一旦识别，标记子集与对应于杆的位置的位置相关联。 还描述了条形码读取器，其相对容易组装并提供条形码的均匀照明。
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公开(公告)号：US08742368B2
公开(公告)日：2014-06-03
申请号：US12865432
申请日：2009-02-02
IPC分类号： F21V9/16
CPC分类号： G01N21/49 , G01J1/0242 , G01J1/0266 , G01J3/02 , G01J3/0208 , G01J3/0218 , G01J3/0229 , G01J3/0291 , G01J3/4412 , G01N15/0205 , G01N21/51 , G01N21/53 , G01N21/532 , G01N21/64 , G01N2015/03 , G01N2021/4792 , G01N2021/6419 , G01N2021/6421 , G01N2021/6476
摘要： A photometric device for investigating a sample, comprises an array of radiation sources that are spaced apart from one another, and which are operable to generate radiation that differs from that generated by the other radiation sources in the array. The device includes a lens arrangement for focusing the radiation at a region of space where a sample may be located for example by means of a sample holder, and at least one detector for receiving radiation from the region of space. Preferably, a number of detectors are employed that are spaced apart from one another, and especially about an axis of the device, so that one radiation detector can detect radiation transmitted by the sample and the other detectors can detect radiation scattered by it. The radiation sources may be time division multiplexed so that in each time slot the detectors receive radiation originating from each radiation source. In an alternative embodiment, the radiation from the region of space may be transmitted to the sample via a beam homogeniser, for example an optical waveguide in the form of an optical fibre, which may be used to reduce or remove speckle where laser diodes are employed as the radiation sources. The device may be used to determine the particle size distribution of particles in a sample by a method employing Bayesian inference.
摘要翻译： 用于调查样品的测光装置包括彼此间隔开的辐射源阵列，并且其可操作以产生与由阵列中的其它辐射源产生的辐射不同的辐射。 该装置包括用于将辐射聚焦在例如借助于样品保持器的样品可能位于的空间区域处的透镜装置，以及用于接收来自空间区域的辐射的至少一个检测器。 优选地，使用彼此间隔开的多个检测器，特别是围绕设备的轴线，使得一个辐射检测器可以检测由样品传输的辐射，并且其它检测器可以检测由其散射的辐射。 辐射源可以被时分复用，使得在每个时隙中，检测器接收来自每个辐射源的辐射。 在替代实施例中，来自空间区域的辐射可以经由光束均化器（例如，光纤形式的光波导）传输到样品，其可以用于减少或去除使用激光二极管的斑点 作为辐射源。 该装置可用于通过采用贝叶斯推理的方法来确定样品中颗粒的粒度分布。
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公开(公告)号：US20100283450A1
公开(公告)日：2010-11-11
申请号：US11984511
申请日：2007-11-19
IPC分类号： G01R31/00
CPC分类号： G01N15/1031 , G01N15/0205 , G01N15/1459
摘要： Particle detection and characterising apparatus has an insulating tube (50) along which the particles flow. Five electrodes (51, 52, 55, 56) and (57) spaced along the outside of the tube are connected via amplifiers (61) and (62) to a processor (68) arranged to measure the charge on the particles. The apparatus also includes a laser (11) and photomultiplier tube (23) arranged to measure the size of the particles so that the nature of the particles can be characterised from their electrical charge and size.
摘要翻译： 颗粒检测和表征装置具有绝缘管（50），颗粒沿着该绝缘管流动。 沿着管外部间隔开的五个电极（51,52,55,56）和（57）经由放大器（61）和（62）连接到布置成测量颗粒上的电荷的处理器（68）。 该装置还包括激光器（11）和光电倍增管（23），其布置成测量颗粒的尺寸，使得可以根据其电荷和尺寸来表征颗粒的性质。
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公开(公告)号：US07916862B2
公开(公告)日：2011-03-29
申请号：US11869539
申请日：2007-10-09
IPC分类号： H04L9/00
CPC分类号： H04H20/31 , G06T1/0028 , G06T1/005 , G06T2200/28 , G06T2201/0052 , G06T2201/0065 , G10L19/018
摘要： The invention comprises an encoder for encoding a stegotext and a decoder for decoding the encoded stegotext, the stegotext being generated by modulating the log power spectrogram of a covertext signal with at least one key, the or each key having been added or subtracted in the log domain to the covertext power spectrogram in accordance with the data of the watermark code with which the stegotext was generated, and the modulated power spectrogram having been returned into the original domain of the covertext. The decoder carries out Fast Fourier Transformation and rectangular polar conversion of the stegotext signal so as to transform the stegotext signal into the log power spectrogram domain; subtracts in the log power domain positive and negative multiples of the key or keys from blocks of the log power spectrogram and evaluates the probability of the results of such subtractions representing an unmodified block of covertext in accordance with a predetermined statistical model.
摘要翻译： 本发明包括一个编码器，用于对一个熟悉的编码器和一个解码器进行编码，该编码器通过用至少一个键调制覆盖文本信号的对数功率谱图来生成，该信号是通过在日志中被加或减 根据生成了嘟嘟声的水印码的数据，将调制后的功率谱图返回到覆盖文本的原始域。 解码器执行快速傅里叶变换和stegotext信号的矩形极化转换，以将stegotext信号转换成对数功率谱图域; 从对数功率谱图的块中减去对数功率域的键或键的正负的倍数，并根据预定的统计模型来评估表示未修改的覆盖文本块的这种减法的结果的概率。
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公开(公告)号：US07298841B2
公开(公告)日：2007-11-20
申请号：US10343145
申请日：2001-07-27
CPC分类号： H04H20/31 , G06T1/0028 , G06T1/005 , G06T2200/28 , G06T2201/0052 , G06T2201/0065 , G10L19/018
摘要： The invention comprises an encoder for encoding a stegotext and a decoder for decoding the encoded stegotext, the stegotext being generated by modulating the log power spectrogram of a covertext signal with at least one key, the or each key having been added or subtracted in the log domain to the covertext power spectrogram in accordance with the data of the watermark code with which the stegotext was generated, and the modulated power spectrogram having been returned into the original domain of the covertext. The decoder carries out Fast Fourier Transformation and rectangular polar conversion of the stegotext signal so as to transform the stegotext signal into the log power spectrogram domain; subtracts in the log power domain positive and negative multiples of the key or keys from blocks of the log power spectrogram and evaluates the probability of the results of such subtractions representing an unmodified block of covertext in accordance with a predetermined statistical model.
摘要翻译： 本发明包括一个编码器，用于对一个熟悉的编码器和一个解码器进行编码，该编码器通过用至少一个键调制覆盖文本信号的对数功率谱图来生成，该信号是通过在日志中被加或减 根据生成了嘟嘟声的水印码的数据，将调制后的功率谱图返回到覆盖文本的原始域。 解码器执行快速傅里叶变换和stegotext信号的矩形极化转换，以将stegotext信号转换成对数功率谱图域; 从对数功率谱图的块中减去对数功率域的键或键的正负的倍数，并根据预定的统计模型来评估表示未修改的覆盖文本块的这种减法的结果的概率。
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公开(公告)号：US07298127B2
公开(公告)日：2007-11-20
申请号：US10595082
申请日：2004-09-03
CPC分类号： G01N15/1031 , G01N15/0205 , G01N15/1459
摘要： Particle detection and characterizing apparatus has an insulating tube along which the particles flow. Five electrodes spaced along the outside of the tube are connected via amplifiers to a processor arranged to measure the charge on the particles. The apparatus also includes a laser and photomultiplier tube arranged to measure the size of the particles so that the nature of the particles can be characterized from their electrical charge and size.
摘要翻译： 颗粒检测和表征装置具有绝缘管，颗粒沿着该绝缘管流动。 沿着管外部隔开的五个电极通过放大器连接到被设置成测量颗粒上的电荷的处理器。 该装置还包括激光和光电倍增管，该激光和光电倍增管布置成测量颗粒的尺寸，使得颗粒的性质可以以其电荷和尺寸为特征。
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