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公开(公告)号：US08589155B2
公开(公告)日：2013-11-19
申请号：US13562841
申请日：2012-07-31
CPC分类号： H04B1/665 , G10L19/032
摘要： Methods of encoding a signal using a perceptual model are described in which a signal to mask ratio parameter within the perceptual model is tuned. The signal to mask ratio parameter is tuned based on a function of the bitrate of the part of the signal which has already been encoded and the target bitrate for the encoding process. The tuned signal to mask ratio parameter is used to compute a masking threshold for the signal which is then used to quantize the signal.
摘要翻译： 描述使用感知模型对信号进行编码的方法，其中调谐感知模型内的信号屏蔽比参数。 基于已经编码的信号的部分的比特率和编码处理的目标比特率的函数来调整信号到掩模比参数。 调谐信号到掩模比参数用于计算信号的掩蔽阈值，然后将其用于量化信号。
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公开(公告)号：US20100204997A1
公开(公告)日：2010-08-12
申请号：US12679729
申请日：2008-09-09
IPC分类号： G06F17/00
CPC分类号： H04B1/665 , G10L19/032
摘要： Methods of encoding a signal using a perceptual model are described in which a signal to mask ratio parameter within the perceptual model is tuned. The signal to mask ratio parameter is tuned based on a function of the bitrate of the part of the signal which has already been encoded and the target bitrate for the encoding process. The tuned signal to mask ratio parameter is used to compute a masking threshold for the signal which is then used to quantise the signal.
摘要翻译： 描述使用感知模型对信号进行编码的方法，其中调谐感知模型内的信号屏蔽比参数。 基于已经编码的信号的部分的比特率和编码处理的目标比特率的函数来调整信号到掩模比参数。 调谐信号到掩模比参数用于计算信号的掩蔽阈值，然后将其用于量化信号。
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公开(公告)号：US08217811B2
公开(公告)日：2012-07-10
申请号：US12679719
申请日：2008-09-09
IPC分类号： H03M7/34
CPC分类号： G10L19/035 , G10L19/002 , H03M7/40 , H04N19/124 , H04N19/146 , H04N19/154 , H04N19/192 , H04N19/91
摘要： Methods and apparatus for iteratively encoding a portion of a signal are described in which the portion of the signal is quantised and an output bit count is estimated based on the sum of logarithms to base n of values of each sample in the plurality of quantised samples and the total number of samples. The output bit count corresponds to an estimate of the output bit count for the portion of the signal once encoded using a code, such as a Huffman code.
摘要翻译： 描述用于对信号的一部分进行迭代编码的方法和装置，其中对信号的该部分进行量化，并且基于对数之和估计输出比特数，从而基于多个量化样本中每个样本的值的n个， 样本总数。 输出位计数对应于一旦使用诸如霍夫曼码的代码编码的信号部分的输出位计数的估计。
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公开(公告)号：US20100202558A1
公开(公告)日：2010-08-12
申请号：US12679724
申请日：2008-09-09
IPC分类号： H04L27/00
CPC分类号： G10L19/0204 , G10L19/002
摘要： Methods of spectral partitioning which may be implemented in an encoder are described. The methods comprise determining an estimate of bit requirements for each of a plurality of spectral sub-bands. These estimates are then used to group the sub-bands into two or more regions by minimising a cost function. This cost function is based on the estimates of bit requirements for each sub-band and the estimates may include estimates of code bit requirements and/or additional code bit requirements for each sub-band. These estimates may be determined in many different ways and a number of methods are described.
摘要翻译： 描述可以在编码器中实现的频谱划分的方法。 所述方法包括确定多个光谱子带中的每一个的比特要求的估计。 这些估计然后用于通过最小化成本函数将子带分组成两个或更多个区域。 该成本函数基于每个子带的比特要求的估计，并且估计可以包括对每个子带的码位要求和/或附加码位要求的估计。 这些估计可以以许多不同的方式确定，并且描述了许多方法。
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公开(公告)号：US20130024201A1
公开(公告)日：2013-01-24
申请号：US13562841
申请日：2012-07-31
IPC分类号： G10L19/00
CPC分类号： H04B1/665 , G10L19/032
摘要： Methods of encoding a signal using a perceptual model are described in which a signal to mask ratio parameter within the perceptual model is tuned. The signal to mask ratio parameter is tuned based on a function of the bitrate of the part of the signal which has already been encoded and the target bitrate for the encoding process. The tuned signal to 5 mask ratio parameter is used to compute a masking threshold for the signal which is then used to quantise the signal.
摘要翻译： 描述使用感知模型对信号进行编码的方法，其中调谐感知模型内的信号屏蔽比参数。 基于已经编码的信号的部分的比特率和编码处理的目标比特率的函数来调整信号到掩模比参数。 调谐信号到5掩模比参数用于计算信号的掩蔽阈值，然后将信号用于量化信号。
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公开(公告)号：US08332217B2
公开(公告)日：2012-12-11
申请号：US12679724
申请日：2008-09-09
CPC分类号： G10L19/0204 , G10L19/002
摘要： Methods of spectral partitioning which may be implemented in an encoder are described. The methods comprise determining an estimate of bit requirements for each of a plurality of spectral sub-bands. These estimates are then used to group the sub-bands into two or more regions by minimizing a cost function. This cost function is based on the estimates of bit requirements for each sub-band and the estimates may include estimates of code bit requirements and/or additional code bit requirements for each sub-band. These estimates may be determined in many different ways and a number of methods are described.
摘要翻译： 描述可以在编码器中实现的频谱划分的方法。 所述方法包括确定多个光谱子带中的每一个的比特要求的估计。 这些估计然后用于通过最小化成本函数将子带分组成两个或更多个区域。 该成本函数基于每个子带的比特要求的估计，并且估计可以包括对每个子带的码位要求和/或附加码位要求的估计。 这些估计可以以许多不同的方式确定，并且描述了许多方法。
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公开(公告)号：US08326619B2
公开(公告)日：2012-12-04
申请号：US12679729
申请日：2008-09-09
CPC分类号： H04B1/665 , G10L19/032
摘要： Methods of encoding a signal using a perceptual model are described in which a signal to mask ratio parameter within the perceptual model is tuned. The signal to mask ratio parameter is tuned based on a function of the bitrate of the part of the signal which has already been encoded and the target bitrate for the encoding process. The tuned signal to 5 mask ratio parameter is used to compute a masking threshold for the signal which is then used to quantise the signal.
摘要翻译： 描述使用感知模型对信号进行编码的方法，其中调谐感知模型内的信号屏蔽比参数。 基于已经编码的信号的部分的比特率和编码处理的目标比特率的函数来调整信号到掩模比参数。 调谐信号到5掩模比参数用于计算信号的掩蔽阈值，然后将信号用于量化信号。
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公开(公告)号：US20100201549A1
公开(公告)日：2010-08-12
申请号：US12679719
申请日：2008-09-09
CPC分类号： G10L19/035 , G10L19/002 , H03M7/40 , H04N19/124 , H04N19/146 , H04N19/154 , H04N19/192 , H04N19/91
摘要： Methods and apparatus for iteratively encoding a portion of a signal are described in which the portion of the signal is quantised and an output bit count is estimated based on the sum of logarithms to base n of values of each sample in the plurality of quantised samples and the total number of samples. The output bit count corresponds to an estimate of the output bit count for the portion of the signal once encoded using a code, such as a Huffman code.
摘要翻译： 描述用于对信号的一部分进行迭代编码的方法和装置，其中对信号的该部分进行量化，并且基于对数之和估计输出比特数，从而基于多个量化样本中每个样本的值的n个， 样本总数。 输出位计数对应于一旦使用诸如霍夫曼码的代码编码的信号部分的输出位计数的估计。
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9.发明授权Flexographic printing method and flexographic printing apparatus having control means for driving printing roller 有权柔版印刷法和柔性版印刷装置具有用于驱动印刷辊的控制装置公开(公告)号：US09205637B2
公开(公告)日：2015-12-08
申请号：US13119935
申请日：2010-01-12
申请人： Colin Hargreaves , David Hargreaves
发明人： Colin Hargreaves , David Hargreaves
摘要： The present invention relates to a flexographic method of printing and a flexographic printing apparatus whereby the repeat length is greater than the circumference of the printing roller. This may be achieved by controlling the rotation of the printing roller as a non-printing zone of the printing roller passes a moving web such that an associated non-printed region formed on the web has a length that is greater than the non-printing zone. The rotation of the printing roller may be controlled by suspending the rotation of the printing roller or reducing the speed of rotation when the non-printing zone is in registration with the web and then increasing the speed of rotation to a predetermined printing speed as a printing zone of the printing roller comes into registration with the web.
摘要翻译： 本发明涉及柔印版印刷方法和柔版印刷装置，由此重复长度大于印刷辊的周长。 这可以通过控制印刷辊的旋转来实现，因为印刷辊的非印刷区域通过移动的幅材，使得形成在幅材上的相关联的非印刷区域的长度大于非印刷区域 。 可以通过使打印辊的旋转悬挂或者当非打印区域与幅材对准时降低旋转速度，然后将旋转速度提高到预定的打印速度作为打印，可以控制打印辊的旋转 印刷辊的区域与网格对准。
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公开(公告)号：US5499085A
公开(公告)日：1996-03-12
申请号：US470707
申请日：1995-06-06
CPC分类号： G03G15/1675 , G03G2215/00455 , G03G2215/1614
摘要： Charged toner is transferred from an image member (such as an image cylinder or belt) to a web of imagable material (typically paper), preferably utilizing a rotating conductive impression cylinder. The toner, having a first polarity, is applied to the image member. The paper web, typically by contact with the impression cylinder, is moved into contact with the image member so that the toner transfers from the image member to the web under pressure. Even despite a high speed of movement of the web (e.g. 200 feet per minute or more), toner back scatter is substantially prevented by applying an electrical bias of the first polarity to the impression cylinder so as to impose an electric force field on the toner particles of sufficient intensity to overcome aerodynamic drag forces which would separate particles from the image areas between the impression cylinder and the image member. While the applied potential is typically between about 100-600 volts, in order to take care of all speeds and all types of toners and all types of printer geometries, a fixed potential of about 750 volts may be utilized. Where the image member is an image cylinder, a nip is provided between the cylinders at which, or immediately adjacent to, toner transfer takes place.
摘要翻译： 充电的调色剂从图像构件（诸如图像筒或带）转移到可成像材料（通常是纸）的幅材，优选地利用旋转的导电压印滚筒。 具有第一极性的调色剂施加到图像构件。 通常通过与压印滚筒接触的纸幅被移动成与图像构件接触，使得调色剂在压力下从图像构件传递到幅材。 即使幅材的高速运动（例如每分钟200英尺或更多），也可以通过将第一极性的电偏压施加于压印滚筒来基本上防止调色剂背散射，从而在调色剂上施加电力场 足够强度的颗粒以克服空气动力学牵引力，其将颗粒与压印滚筒和图像构件之间的图像区域分离。 虽然施加的电位通常在约100-600伏特之间，为了照顾所有速度和所有类型的调色剂和所有类型的打印机几何形状，可以使用约750伏特的固定电位。 在图像构件是图像柱体的情况下，在发生调色剂转印之前或紧邻的气缸之间提供辊隙。
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