Apparatus for amplifying a signal using digital pulse width modulators
    1.
    发明授权
    Apparatus for amplifying a signal using digital pulse width modulators 失效
    使用数字脉宽调制器放大信号的装置

    公开(公告)号:US6038265A

    公开(公告)日:2000-03-14

    申请号:US936306

    申请日:1997-09-24

    CPC分类号: G06J1/00

    摘要: An electronic apparatus that includes a digital processor (12), a first digital pulse width modulator (304), a second digital pulse width modulator (306), a combining circuit (308), and a load (310). The digital processor (12) produces a first digital signal (314) and a second digital signal (316). The first digital pulse width modulator (304) is responsive to the first digital signal (314), and the second digital pulse width modulator (306) is responsive to the second digital signal (316). The combining circuit (308) is responsive to the first digital pulse width modulator (304) and the second digital pulse width modulator (306). The load (310) is responsive to the combining circuit (308).

    摘要翻译: 一种电子设备,包括数字处理器(12),第一数字脉宽调制器(304),第二数字脉宽调制器(306),组合电路(308)和负载(310)。 数字处理器(12)产生第一数字信号(314)和第二数字信号(316)。 第一数字脉冲宽度调制器(304)响应于第一数字信号(314),并且第二数字脉宽调制器(306)响应于第二数字信号(316)。 组合电路(308)响应于第一数字脉冲宽度调制器(304)和第二数字脉冲宽度调制器(306)。 负载(310)响应于组合电路(308)。

    Methods and systems for processing video signal pixel data
    2.
    发明授权
    Methods and systems for processing video signal pixel data 失效
    视频信号像素数据处理方法及系统

    公开(公告)号:US5861924A

    公开(公告)日:1999-01-19

    申请号:US816236

    申请日:1997-03-13

    IPC分类号: H04N5/14 H04N5/44 H04N7/01

    摘要: In a video processing system (14), a method of detecting and compensating for motion of an image which includes the steps of: detecting a first pixel value, a second pixel value, and a third pixel value, the first pixel value of a first scan line in a first field, the second pixel value of a second scan line in the first field, and the third pixel value in a second field; providing a motion indicator based on the first, second, and third pixel values; selecting a plurality of interpolation coefficients from a memory based on the motion indicator signal; and providing an interpolated color space pixel based on a first color space pixel associated with the first pixel value, a second color space pixel associated with the second pixel value, and based on the plurality of interpolation coefficients.

    摘要翻译: 在视频处理系统(14)中,检测和补偿图像的运动的方法包括以下步骤:检测第一像素值,第二像素值和第三像素值,第一像素值 在第一场中的扫描线,第一场中的第二扫描线的第二像素值和第二场中的第三像素值; 提供基于所述第一,第二和第三像素值的运动指示器; 基于运动指示符信号从存储器中选择多个插值系数; 以及基于与所述第一像素值相关联的第一颜色空间像素,与所述第二像素值相关联的第二颜色空间像素,以及基于所述多个内插系数来提供内插的颜色空间像素。

    System for recognizing spoken sounds from continuous speech and method
of using same
    5.
    发明授权
    System for recognizing spoken sounds from continuous speech and method of using same 失效
    用于识别来自连续语音的口语声音的系统及其使用方法

    公开(公告)号:US5734793A

    公开(公告)日:1998-03-31

    申请号:US707451

    申请日:1996-08-29

    申请人: Shay-Ping T. Wang

    发明人: Shay-Ping T. Wang

    摘要: A system for recognizing spoken sounds from continuous speech includes a plurality of classifiers and a selector. Each of the classifiers implements a discriminant function which is based on a polynomial expansion. By determining the polynomial coefficients of a discriminant function, the corresponding classifier is tuned to classify a specific spoken sound. The selector utilizes the classifier outputs to identify the spoken sounds. A method of using the system is also provided.

    摘要翻译: 用于从连续语音识别口语声音的系统包括多个分类器和选择器。 每个分类器实现基于多项式展开的判别函数。 通过确定判别函数的多项式系数,对相应的分类器进行调整以对特定的语音进行分类。 选择器利用分类器输出来识别语音。 还提供了一种使用该系统的方法。

    Auto-tuning controller and method of use therefor
    6.
    发明授权
    Auto-tuning controller and method of use therefor 失效
    自动调整控制器及其使用方法

    公开(公告)号:US5649062A

    公开(公告)日:1997-07-15

    申请号:US268395

    申请日:1994-06-30

    IPC分类号: G05B13/02 G06F15/18

    CPC分类号: G05B13/0235 Y10S706/903

    摘要: In an auto-tuning controller the initial values of control coefficients are found by fitting a control polynomial to control transfer characteristic data. The values are then tuned using a descent-based optimization method.

    摘要翻译: 在自动调谐控制器中,控制系数的初始值通过拟合控制多项式来控制传输特性数据。 然后使用基于下降的优化方法调整值。

    Method and system for performing an L.sub.2 norm operation
    7.
    发明授权
    Method and system for performing an L.sub.2 norm operation 失效
    执行L2范围运算的方法和系统

    公开(公告)号:US5936871A

    公开(公告)日:1999-08-10

    申请号:US519890

    申请日:1995-08-28

    IPC分类号: G06F17/10 G06F7/00

    CPC分类号: G06F17/10

    摘要: A method and system for an L.sub.2 norm operation are provided. A sequence of input signals is converted to a sequence of log signals. The sequence of log signals is distributed through a data pipeline to a plurality of processing elements which effectively multiply each log signal by a factor of two to produce a plurality of term signals. The term signals are then converted to inverse-log signals which are summed to produce a feedback signal. The square-root of the feedback signal is computed to generate an output signal. The log/inverse-log conversions of signals are based on estimating a log/inverse-log function using a second-order polynomial. The L.sub.2 norm operation can be performed using the distance between two vectors.

    摘要翻译: 提供了L2范围运算的方法和系统。 一系列输入信号被转换成一系列的对数信号。 对数信号序列通过数据流水线分配到多个处理元件,这些处理元件有效地将每个对数信号乘以因子2以产生多个项信号。 术语信号然后转换成反相信号,它们相加以产生反馈信号。 计算反馈信号的平方根以产生输出信号。 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。 可以使用两个向量之间的距离来执行L2范数操作。

    Method and system for compressing a pixel map signal using dynamic
quantization
    8.
    发明授权
    Method and system for compressing a pixel map signal using dynamic quantization 失效
    使用动态量化压缩像素图信号的方法和系统

    公开(公告)号:US5793892A

    公开(公告)日:1998-08-11

    申请号:US495123

    申请日:1995-06-27

    摘要: A pixel map signal is converted into a coefficient signal of block coefficient signals, each representing the pixels in a pixel map block (420) in a pixel map (410) with the coefficients in a hybrid polynomial. The coefficient signal is quantized by dividing each of the coefficient values in each of the block coefficient signals by quantization factors to produce quantized coefficient values which replace the coefficient values. Block coefficient signals which represent an edge block (424) in the pixel map (410) are divided by larger quantization factors than block coefficient signals which represent a center block (422) in the pixel map (410). As a result, smaller quantized coefficient values are obtained so that block coefficient signals which represent an edge block (424) are compressed to a greater extent than block coefficient signals that represent a center block (422) in the pixel map (410).

    摘要翻译: 像素映射信号被转换为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(410)中的像素映射块(420)中的像素。 通过将每个块系数信号中的每个系数值除以量化因子来量化系数信号,以产生代替系数值的量化系数值。 表示像素图(410)中的边缘块(424)的块系数信号被除以比像素图(410)中的中心块(422)的块系数信号更大的量化因子。 结果,获得更小的量化系数值,使得表示边缘块(424)的块系数信号被压缩到比表示像素图(410)中的中心块(422)的块系数信号更大的程度。

    Method and system for performing an FIR filtering operation
    10.
    发明授权
    Method and system for performing an FIR filtering operation 失效
    执行FIR滤波操作的方法和系统

    公开(公告)号:US5721696A

    公开(公告)日:1998-02-24

    申请号:US520325

    申请日:1995-08-28

    CPC分类号: H03H17/06

    摘要: A method and system for an FIR filter are provided. A sequence of input signal is converted to a corresponding sequence of log signals. FIR filtering coefficients are then added to each log signal to generate a plurality of term signals. The term signals are then converted to inverse-log signals, and the inverse-log signals are summed to produce an output signal. 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FIR滤波器的方法和系统。 输入信号的序列被转换成对应的对数序列信号。 然后将FIR滤波系数加到每个对数信号中以产生多个项信号。 术语信号然后被转换成反对数信号,并将反对数信号相加以产生输出信号。 信号的日志/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。