Circuit and method for processing data
    1.
    发明授权
    Circuit and method for processing data 有权
    电路和数据处理方法

    公开(公告)号:US06868431B1

    公开(公告)日:2005-03-15

    申请号:US09426670

    申请日:1999-10-25

    IPC分类号: H03H17/06 G06F17/10

    CPC分类号: H03H17/06

    摘要: A Finite Impulse Response (FIR) filter circuit (60) includes delay elements (63, 64, 66), multipliers (71, 72, 73, 74), a summing device (78), and a digital integrator (69) at the output of the FIR filter circuit (60). A method for processing data using the FIR filter circuit (60) includes differentially encoding data prior to storing or processing of the data. The method provides a technique for compressing data since less memory is needed to store derivative data. The method further includes integrating the derivative data using the digital integrator (69) to decompress the derivative data.

    摘要翻译: 有限脉冲响应(FIR)滤波器电路(60)包括延迟元件(63,64,66),乘法器(71,72,73,74),求和装置(78)和数字积分器(69) 输出FIR滤波器电路(60)。 使用FIR滤波器电路(60)处理数据的方法包括在存储或处理数据之前对数据进行差分编码。 该方法提供了一种用于压缩数据的技术,因为需要更少的存储器来存储导数数据。 该方法还包括使用数字积分器(69)积分导数数据以解压缩导数数据。

    Amplifier and method of canceling distortion by combining hyperbolic
tangent and hyperbolic sine transfer functions
    2.
    发明授权
    Amplifier and method of canceling distortion by combining hyperbolic tangent and hyperbolic sine transfer functions 失效
    通过组合双曲正切和双曲正弦传递函数来消除失真的放大器和方法

    公开(公告)号:US5942939A

    公开(公告)日:1999-08-24

    申请号:US88002

    申请日:1998-06-01

    CPC分类号: H03F1/3211

    摘要: A differential amplifier (10) receives a differential input signal (V.sub.IN). The input signal is attenuated by a first attenuator (12) and applied to a tan h amplifier (16). The input signal is also attenuated by a second attenuator (14) and applied to a sin h amplifier (18). The input signals to the tan h amplifier and sin h amplifier are independently attenuated. The transfer functions of the tan h amplifier and the sin h amplifier each have a linear region and a non-linear region. The output of the tan h amplifier and the sin h amplifier are summed (26) so that the non-linear region of the tan h amplifier cancels with the non-linear region of the sin h amplifier. The overall transfer function of the differential amplifier is linear over a wide range of input signal amplitudes by the cancellation of the non-linear regions.

    摘要翻译: 差分放大器(10)接收差分输入信号(VIN)。 输入信号由第一衰减器(12)衰减并施加到tanh放大器(16)。 输入信号也被第二衰减器(14)衰减并施加到sinh放大器(18)。 到tanh放大器和sin h放大器的输入信号被独立衰减。 tanh放大器和sinh放大器的传递函数各具有线性区域和非线性区域。 tanh放大器和sinh放大器的输出相加(26),使得tanh放大器的非线性区域与sinh放大器的非线性区域抵消。 通过非线性区域的消除,差分放大器的整体传递函数在宽范围的输入信号幅度上是线性的。