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41.发明授权System and method of hybrid forward differencing to render bézier splines 失效混合前向差分方法和系统，用于贝塞尔样条曲线表示
公开(公告)号：EP0577131B1
公开(公告)日：2000-06-14
申请号：EP93110542.3
申请日：1993-07-01
CPC分类号： G06T11/203 , G06F17/17
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42.发明公开SYSTEM AND METHOD FOR GENERATING FRACTIONAL LENGTH DELAY LINES IN A DIGITAL SIGNAL PROCESSING SYSTEM 失效用于在数字信号处理系统中产生分段长度延迟线的系统和方法
公开(公告)号：EP0979463A1
公开(公告)日：2000-02-16
申请号：EP97918513.9
申请日：1997-04-03
IPC分类号： G06F17/17
CPC分类号： G06F17/17 , G10H2250/035 , G10H2250/046 , G10H2250/101
摘要： A sampled data, non-integer delay line interpolation structure (150) includes a sampled data delay line (156), two allpass filters (162, 164), each having an associated read pointer (158, 160) for reading data at a corresponding integer position of the delay line, an alternating crossfader (166) that alternatingly crossfades between the outputs of the two allpass filters, plus a controller (154) that controls when the read position of each allpass filter is updated and also controls when the filter coefficient of each allpass filter is updated. A specified delay length value is sampled by the controller each time the crossfade orientation of the alternating crossfader is changed, and from that value the controller generates a new read pointer and filter coefficient for allpass filter to which the structure will next crossfade.
摘要翻译： 采样数据非整数延迟线内插结构（150）包括采样数据延迟线（156），两个全通滤波器（162,164），每个全通滤波器具有相关联的读指针（158,160） 延迟线的整数位置，在两个全通滤波器的输出之间交替淡化的交替淡化交叉淡化器（166），以及控制何时更新每个全通滤波器的读取位置的控制器（154），并且还控制何时滤波器系数 每个全通滤波器的更新。 每当交替交叉渐变器的交叉淡化方向改变时，控制器对指定的延迟长度值进行采样，并且从该值开始，控制器为该结构将接下来交叉淡入的全通滤波器生成新的读取指针和滤波器系数。
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公开(公告)号：EP0818737A3
公开(公告)日：1999-08-04
申请号：EP97110783.4
申请日：1997-07-01
发明人： Mou, Alex Zhi-Jian
IPC分类号： G06F17/17
CPC分类号： H03H17/0657 , G06F17/17 , H03H17/0664
摘要： Symmetry in a filter is used to reduce the complexity of an interpolator or a decimator and to simplify derivation of resulting discrete samples. In particular, a weight filter matrix which includes L=(N-1)M+K weights is divided into two sub-filters, the first having L1=NK weights and the second having L2=(N-1)(M-K). In the case of interpolators, N source samples are applied to the first weight sub-filter to produce K interpolated signals and N-1 source samples are applied to the second weight sub-filter to produce M-K interpolated signals. In the case of decimators, K source samples are applied to the first weight sub-filter to produce N decimated sample components and M-K source samples are applied to the second weight sub-filter to produce N-1 decimated sample components. If the weight filter matrix is centrosymmetric, both sub-filters are also centrosymmetric. Symmetry in the weights of each sub-filter is recognized and exploited. Within each sub-filter, an inverse relationship between weights applied to two samples is recognized and exploited. An inverse relationship is recognized when a first weight is associated with a first of the samples and a second weight is associated with a second of the samples and a weight which is equivalent to the first weight is associated with the second sample and a weight which is equivalent to the second weight is associated with the first sample. The inverse relationship is exploited by forming two composite weights of the first and second weights and weighting composite sample signals with the composite weights. A first of the composite weights has a value which is one-half of the sum of the values of the first and second weights. A second of the composite weights has a value which is one-half of the difference of the values of the first and second weights. The composite weights can be used repeatedly for each subsequent interpolation or decimation and are therefore calculated only once for processing many samples according to the same filter. The two composite samples have values which are, respectively, (i) the sum of the values of the first and second samples and (ii) the difference of the values of the first and second samples.
摘要翻译： 滤波器中的对称性用于降低内插器或抽取器的复杂度，并简化所得离散样本的导出。 特别地，包括L =（N-1）M + K个权重的加权滤波器矩阵被分成两个子滤波器，第一个具有L1 = NK权重，第二个具有L2 =（N-1）（M-K）。 在内插器的情况下，将N个源样本应用于第一权重子滤波器以产生K个内插信号，并且将N-1个源样本应用于第二权重子滤波器以产生M-K个内插信号。 在抽取器的情况下，将K个源样本应用于第一权重子滤波器以产生N个抽取样本分量，并且将M-K个源样本应用于第二权重子滤波器以产生N-1个抽取样本分量。 如果权重滤波器矩阵是中心对称的，则两个子滤波器也是中心对称的。 每个子过滤器权重的对称性被识别和利用。 在每个子滤波器中，应用于两个样本的权重之间的反比关系被识别和利用。 当第一权重与第一样本相关联并且第二权重与第二样本相关联并且等于第一权重的权重与第二样本相关联时， 相当于第二个重量与第一个样本相关联。 通过形成第一和第二权重的两个合成权重并利用合成权重对复合采样信号进行加权来利用逆关系。 第一个合成权重的值是第一个和第二个权重的总和的一半。 第二个合成权重的值是第一个和第二个权重的差值的一半。 对于每个后续的内插或抽取，复合权重可以重复使用，因此根据相同的过滤器仅处理多个样本仅计算一次。 这两个复合样本的值分别是（i）第一和第二样本的值的总和和（ii）第一和第二样本的值的差值。
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公开(公告)号：EP0884687A1
公开(公告)日：1998-12-16
申请号：EP98110175.1
申请日：1998-06-04
IPC分类号： G06F17/17
CPC分类号： G06T3/4007
摘要： With interpolating processing for an input signal series x n by delay elements 11 1 to 11 N , coefficient multiplying portions 12 0 to 12 N and adders 13 1 to 13 N , a fixed coefficient filter 11 outputs three signals, x n-M , X n-M+1 , and a midpoint x((n-M)T+T/2) between x n-M and X n-M+1 obtained by delaying the input signal series x n . A selecting portion 211 selects two output signals from the above three signals according to time τ for obtaining an interpolated value under an instruction by a comparator 213. An interpolated value calculating portion 212 then performs linear interpolation between the two output signals selected by the selecting portion 211 according to the time τ for obtaining the interpolated value using a linear interpolation factor R set by the comparator 213, a switch 216 and a divider 217. This requires only a small number of coefficients to be stored in the interpolating device and no switching of coefficients for every change in time for obtaining the interpolated value, allowing high speed interpolating processing.
摘要翻译： 通过延迟元件111至11N，系数乘法部分120至12N和加法器131至13N对输入信号序列xn进行插值处理时，固定系数滤波器11输出三个信号xn-M，Xn-M + 1和一个中点 通过延迟输入信号序列xn得到的xn-M和Xn-M + 1之间的差值x（（nM）T + T / 2）。 选择部分211根据时间τ从上述三个信号中选择两个输出信号，以在比较器213的指令下获得内插值。内插值计算部分212然后在由选择部分选择的两个输出信号之间进行线性内插 根据用于利用由比较器213，开关216和除法器217设置的线性内插因子R来获得内插值的时间τ，根据时间τ计算内插值211.这仅需要少量的系数存储在内插装置中， 用于获得插值的每个时间变化的系数，允许高速插值处理。
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公开(公告)号：EP0846295A4
公开(公告)日：1998-12-02
申请号：EP96927451
申请日：1996-08-26
申请人： UNIV QUEENSLAND
发明人： HANSON GRAEME RICHARD , WANG DEMING
CPC分类号： G01R33/4625 , G06F17/175
摘要： Numerical integration of a function over a unit sphere is performed using a new partition scheme. At least one octant of the sphere is partitioned into triangular convexes, and functional values are calculated at the vertexes of the triangular convexes. Typically, an octant is partitioned into N bands, respectively containing 1, 3, 5 ... 2N - 1 triangular convexes. Each triangular convex may be subpartitioned into smaller triangular convexes. An interpolation method may be used to calculate functional values at points within the convexes. Typically, cubic spline interpolation is used for points along the edges of the triangular convexes, and linear interpolation is used for points within the triangular convexes. The partition method is particularly useful in computer simulation of magnetic resonance spectra as it significantly reduces computational time.
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公开(公告)号：EP0814413A1
公开(公告)日：1997-12-29
申请号：EP97900042
申请日：1997-01-07
发明人： OBARA KAZUAKI , WATANABE TATSUMI , ISAJI KAZUHIDE
CPC分类号： G06F17/17
摘要： Disclosed is a time series signal predicting apparatus for predicting time series data of the future based on past time series data and current time series data. Vector generating means generates n-dimensional vector data based on a natural number of n inputted time series data and stores them into vector storage means, while further vector generating means generates (n+1)-dimensional vector data based on inputted past time series data, classifies them into a plurality of L vector sets in units of similar vectors by using up to n-dimensional vector data, and stores them into vector set storage means. Subsequently, vector classifying means classifies input vector data according to which vector set they belong to, and vector selecting means selects a plurality of k vector data in a descending order of similarity to the vector data of newly inputted time series data, from a vector set belonging to vector sets to which the vector data have been decided to belong. Then, past data extracting means extracts a plurality of k (n+1)-th-dimensional data from a plurality of k (n+1)-dimensional vectors belonging to the selected vector set, and outputting the extracted data together with their similarities, and data predicting means predicts and outputs time series data of the next time succeeding to the inputted time series data based on the plurality of k extracted data, the input vector data and the similarities.
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公开(公告)号：EP0561792B1
公开(公告)日：1997-02-19
申请号：EP91918053.9
申请日：1991-10-16
申请人： ABB PATENT GmbH
CPC分类号： F02D41/2416 , F02D41/1404 , F02D2041/1433 , G05B13/028 , G06F17/175
摘要： A control and regulation device for technical processes uses knowledge-based control rules for selected process data. The device calculates control or regulation values for the remaining process states by means of a constant mathematical function that interconnects knowledge-based control rules, creating as by non-linear interpolation control rules for all process states, n being the number of input values characteristic of a process state.
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49.发明授权System for generating approximate curves and system for memorizing curves 失效Approximationskurven和曲线存储的发电系统
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公开(公告)号：EP0648359B1
公开(公告)日：1996-04-17
申请号：EP93914882.1
申请日：1993-07-05
发明人： BORER, Timothy John
CPC分类号： H04N19/527 , G06F17/153 , G06T7/262
摘要： A method of correlation signal processing particularly for the processing of correlation surfaces which are utilised in estimating the motion within sequences of video pictures, involves matching an assumed quadratic surface in the region of a stationary value.
摘要翻译： 一种相关信号处理的方法，特别是用于处理在视频图像序列中的运动估计中使用的相关表面的相关信号处理方法，包括使稳定值区域中的假定二次曲面匹配。
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