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11.发明授权
公开(公告)号：US5701391A
公开(公告)日：1997-12-23
申请号：US558582
申请日：1995-10-31
CPC分类号： G10L19/0204 , G10L25/93
摘要： A speech signal is sampled to form a sequence of speech data and segmented into segments. The envelope of each segment is detected to form an envelope segment. Each datum of the segment is divided by each datum of the envelope segment to form a de-envelope segment which is transformed into spectral components. Dominant frequencies are determined for the spectral components with greatest magnitudes. Envelope coefficients are generated by fitting a polynomial function to the segment. Phase parameters are generated representing a phase of each of the dominant spectral components. The dominant frequencies, the envelope coefficients and the phase parameters are generated as compressed speech data for each voiced segment. For each unvoiced segment, a carrier frequency, an amplitude and at least one sideband frequency of an amplitude modulation component are generated as the compressed speech data.
摘要翻译： 语音信号被采样以形成语音数据序列并被分段成段。 检测每个段的包络线以形成包络线段。 该段的每个数据被包络线段的每个数据划分，以形成被转换为频谱分量的去包络线段。 对于具有最大幅度的光谱分量确定主要频率。 通过将多项式函数拟合到段来生成包络系数。 产生表示每个主要谱分量的相位的相位参数。 主频，包络系数和相位参数作为每个浊音段的压缩语音数据产生。 对于每个无声段，生成幅度调制分量的载波频率，幅度和至少一个边带频率作为压缩语音数据。
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公开(公告)号：US6085209A
公开(公告)日：2000-07-04
申请号：US999618
申请日：1997-07-28
申请人： Shao Wei Pan
发明人： Shao Wei Pan
CPC分类号： H03H17/0261 , H03H17/04
摘要： A method and system for an IIR filter are provided. A sequence of input signals is converted to a first sequence of log signals, while a sequence of feedback signals is converted to a second sequence of log signals. IIR filtering coefficients are then added to each sequence of log signals to generate a plurality of term signals. The term signals are then converted to inverse-log signals which are summed to produce an output signal. The log/inverse-log conversions of signals are based on estimating a log/inverse-log function using a second-order polynomial.
摘要翻译： 提供了一种IIR滤波器的方法和系统。 输入信号序列被转换为第一序列的对数信号，而一系列的反馈信号被转换成第二个对数信号序列。 然后将IIR滤波系数加到每个对数信号序列中以产生多个项信号。 术语信号然后被转换成反相信号，它们被相加以产生输出信号。 信号的对数/反向对数转换基于使用二阶多项式估计日志/反向对数函数。
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公开(公告)号：US5941939A
公开(公告)日：1999-08-24
申请号：US881903
申请日：1997-06-25
CPC分类号： H03M7/50 , G06F1/0356 , G06F2101/10
摘要： A converter, which may be used for implementing either logarithmic or inverse-logarithmic functions, includes a memory, a multiplier, and an adder. The memory stores a plurality of parameters which are derived using a least squares method to estimate a logarithmic or inverse-logarithmic function over a domain of input values.
摘要翻译： A转换器，其可以被用于实现任一对数或反对数函数，包括存储器，乘法器和加法器。 所述存储器存储多个被使用最小二乘法来估计在输入值的域的对数或反对数函数导出的参数。
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14.发明授权
公开(公告)号：US5696875A
公开(公告)日：1997-12-09
申请号：US550724
申请日：1995-10-31
CPC分类号： G10L19/0204
摘要： A speech signal is sampled to form a sequence of speech data. The sequence of speech data is segmented into overlapping segments. Speech coefficients are generated by fitting each segment to a nonlinear predictive coding equation. The nonlinear predictive coding equation includes a linear predictive coding equation with linear terms, and additionally includes at least one cross term that is proportional to a product of two or more of the linear terms. If the segment is voiced, a sinusoidal term is included in the nonlinear predictive coding equation and sinusoidal parameters are generated. Otherwise, a noise term is included in the nonlinear predictive coding equation. The speech coefficients, a voiced bit, and, if the segment is voiced, the sinusoidal parameters are included as compressed speech data.
摘要翻译： 语音信号被采样以形成语音数据序列。 语音数据的序列被分割成重叠的段。 通过将每个段拟合到非线性预测编码方程来产生语音系数。 非线性预测编码方程包括具有线性项的线性预测编码方程，并且还包括与两个或多个线性项的乘积成比例的至少一个交叉项。 如果该段是有声的，则在非线性预测编码方程中包括正弦项，并且产生正弦参数。 否则，噪声项被包括在非线性预测编码方程中。 语音系数，有声位，以及如果该段是有声的，则将正弦参数包括为压缩语音数据。
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公开(公告)号：US6065031A
公开(公告)日：2000-05-16
申请号：US853616
申请日：1997-05-09
申请人： Shao Wei Pan , Shay-Ping T. Wang
发明人： Shao Wei Pan , Shay-Ping T. Wang
摘要： A digital log converter is provided which includes a comparator (10) and a log signal generator (20). Upon receiving a digital input signal (12), the comparator (10) determines whether an upper bit-slice of the input signal (12) equals zero. If the upper bit-slice is zero, the log signal generator (20) subtracts an offset from at least one parameter to generate a log signal (16); otherwise, the log signal generator (20) interpolates the at least one parameter and a lower bit-slice of the input signal (12) to generate the log signal (16).
摘要翻译： 提供了一种数字对数转换器，其包括比较器（10）和对数信号发生器（20）。 在接收到数字输入信号（12）时，比较器（10）确定输入信号（12）的高位位元是否等于零。 如果高位位置为零，则对数信号发生器（20）从至少一个参数减去偏移量以产生对数信号（16）; 否则，对数信号发生器（20）内插输入信号（12）的至少一个参数和较低位片，以产生对数信号（16）。
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公开(公告)号：US6000835A
公开(公告)日：1999-12-14
申请号：US898645
申请日：1997-07-22
申请人： Shao Wei Pan , Shay-Ping T. Wang
发明人： Shao Wei Pan , Shay-Ping T. Wang
CPC分类号： G06F7/544 , G06F17/18 , G06F9/30014
摘要： A method and system for an L.sub.1 norm operation are provided. A sequence of input signals is distributed through a data pipeline to a programmable accumulator. The accumulator sums the input signals to generate an output signal. The L.sub.1 norm operation can be performed using the distance between two vectors.
摘要翻译： 提供了L1范数运算的方法和系统。 输入信号序列通过数据流水线分配到可编程累加器。 累加器对输入信号进行求和以产生输出信号。 可以使用两个向量之间的距离来执行L1范数操作。
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公开(公告)号：US5917447A
公开(公告)日：1999-06-29
申请号：US654946
申请日：1996-05-29
CPC分类号： H01Q3/26
摘要： A digital beam forming system includes an array of computing units (60-76) for weighting incoming signals and a plurality of summing processors (80-84) for generating output signals that represent weighted sums corresponding to rows within the array. The digital beam forming system can be incorporated in either a transmitter or receiver used in a radio frequency communications system.
摘要翻译： 数字波束形成系统包括用于加权输入信号的计算单元阵列（60-76）和多个求和处理器（80-84），用于产生表示对应于阵列内的行的加权和的输出信号。 数字波束形成系统可以结合在射频通信系统中使用的发射机或接收机中。
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18.发明授权Video system performing non-uniform interpolation of color space signals and method of using same 失效执行彩色空间信号的非均匀插值的视频系统及其使用方法
公开(公告)号：US5742350A
公开(公告)日：1998-04-21
申请号：US496641
申请日：1995-06-29
申请人： Shao Wei Pan , Shay-Ping T. Wang
发明人： Shao Wei Pan , Shay-Ping T. Wang
CPC分类号： H04N7/0135 , H04N7/012 , H04N7/0125 , H04N5/144
摘要： A real-time video system which performs non-uniform interpolation between adjacent vertical scan lines is presented. The video system includes a converter, a memory, an enhanced-video circuit, and a sync generator. The video system decodes and digitizes an analog composite video signal, such as an NTSC, PAL, or SECAM signal, and generates a digital video signal having a greater number of horizontal scan lines than the analog video signal. The video system is programmable to allow a different number of scan lines in the output digital video signal.
摘要翻译： 提出了一种在相邻垂直扫描线之间执行不均匀插值的实时视频系统。 视频系统包括转换器，存储器，增强型视频电路和同步发生器。 视频系统对诸如NTSC，PAL或SECAM信号的模拟复合视频信号进行解码和数字化，并且生成具有比模拟视频信号更多数量的水平扫描线的数字视频信号。 视频系统是可编程的，以允许输出数字视频信号中的不同数量的扫描线。
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19.发明授权Computer Processor utilizing logarithmic conversion and method of use thereof 失效利用对数转换的计算机处理器及其使用方法
公开(公告)号：US5685008A
公开(公告)日：1997-11-04
申请号：US403158
申请日：1995-03-13
申请人： Shao Wei Pan , Shay-Ping Thomas Wang , Scott Edward Lloyd , Nicholas Mikulas Labun , David Alan Hayner
发明人： Shao Wei Pan , Shay-Ping Thomas Wang , Scott Edward Lloyd , Nicholas Mikulas Labun , David Alan Hayner
CPC分类号： G06F7/48 , G06F1/0307 , G06F7/5235
摘要： A computer processor for performing mathematical operations includes a logarithm converter which generates log values on a data bus, a plurality of processing elements connected to the data bus, an inverse-logarithm converter which receives values from the processing elements, an accumulator which sums converted values from the inverse-logarithm converter, and a control unit for configuring the accumulator to perform various summing operations. The computer processor also includes a switch for providing processor outputs as feedback. An instruction, selected from a set of instructions, is decoded by the control unit to configure the computer processor to perform operations on a data stream.
摘要翻译： 用于执行数学运算的计算机处理器包括对数转换器，其在数据总线上生成对数值，连接到数据总线的多个处理元件，从对该处理元件接收值的反对数转换器，将转换值相加的累加器 以及用于配置所述累加器以执行各种求和操作的控制单元。 计算机处理器还包括用于提供处理器输出作为反馈的开关。 由一组指令选择的指令由控制单元解码以配置计算机处理器对数据流执行操作。
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20.发明授权Method and system for compressing a video signal using nonlinear interpolation 失效使用非线性插值压缩视频信号的方法和系统
公开(公告)号：US5768427A
公开(公告)日：1998-06-16
申请号：US496270
申请日：1995-06-27
申请人： Shao Wei Pan , Shay-Ping T. Wang
发明人： Shao Wei Pan , Shay-Ping T. Wang
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H04N7/36 , H04N7/46 , H04N11/04 , G06K9/00 , G06K9/36 , H04N7/12
CPC分类号： H04N11/042 , H04N19/126 , H04N19/132 , H04N19/17 , H04N19/503 , H04N19/507 , H04N19/527 , H04N19/587 , H04N19/86 , H04N19/124 , H04N19/60
摘要： A video signal is converted into a coefficient signal of block coefficient signals for each frame in a video image. Each of the block coefficient signals represents the pixels in a pixel map block (420) with the coefficients in a hybrid polynomial. The hybrid polynomial contains discrete cosine terms, a constant term separated from the discrete cosine terms, and polynomial terms separated from the discrete cosine terms. Coefficient signals for selected frames only are transmitted to a receiving computer (130). The coefficient signals for the selected frames are converted to decompressed pixel map signals and the pixel map signals for unselected frames are interpolated using nonlinear interpolation. The decompressed pixel map signals and interpolated pixel map signals are ordered into an original frame sequence to produce a decompressed video signal.
摘要翻译： 视频信号被转换为视频图像中每帧的块系数信号的系数信号。 每个块系数信号表示具有混合多项式中的系数的像素映射块（420）中的像素。 混合多项式包含离散余弦项，与离散余弦项分离的常数项，以及与离散余弦项分离的多项式项。 所选帧的系数信号仅被发送到接收计算机（130）。 将所选择的帧的系数信号转换为解压缩像素映射信号，并且使用非线性插值来插值用于未选择的帧的像素映射信号。 解压缩像素映射信号和内插像素图信号被排序成原始帧序列以产生解压缩视频信号。
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