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    • 6. 发明授权
    • Method for assuring fidelity of a summing process
    • 确保求和过程保真度的方法
    • US5233605A
    • 1993-08-03
    • US770398
    • 1991-10-03
    • John W. MaherJames H. Errico
    • John W. MaherJames H. Errico
    • H04M3/56
    • H04M3/568H04M3/561
    • In a digital summing process that sums non-linear digital signals by converting them to linear signals, computing their two's complement, summing the two's complements together and converting the resultant into a non-linear resultant, the fidelity of the summing process may be verified in the following manner. When only one non-linear digital signal is being summed, an algorithm determines whether the one non-linear digital signal being summed is equivalent to a predetermined value which, when passed through the summing process, will yield a different value than the one inputted. If the algorithm determines that the one non-linear digital signal is equivalent to a predetermined value, it sets a flag which indicates that the resultant over written with the predetermined value. Once the resultant is overwritten with the predetermined value, the flag is reset.
    • 在数字求和过程中,通过将非线性数字信号转换为线性信号,计算其二进制补码,将两者的补码相加在一起,并将结果转换为非线性结果,可以验证求和过程的保真度 以下方式。 当只求和一个非线性数字信号时,一个算法确定一个非线性数字信号相加是否等于一个预定值,当一个非线性数字信号通过相加处理时,它将产生与输入的不同的值。 如果算法确定一个非线性数字信号等于预定值,则它设置一个标志,该标志指示以预定值写入的结果。 一旦结果被预定值覆盖,则标志被复位。
    • 9. 发明授权
    • Method and apparatus for augmenting listening capacity of a signal
destination
    • 用于增加信号目的地的收听能力的方法和装置
    • US5491689A
    • 1996-02-13
    • US206709
    • 1994-03-07
    • John W. MaherJames H. Errico
    • John W. MaherJames H. Errico
    • H04W84/08H04M3/56H04Q11/04
    • H04W84/08
    • Listening capacity of a signal destination is augmented through the provision of a master switching center (207) and a slave switching center (209) linked via a dedicated communication port (203). Under direction of the master switching center (207), the slave switching center (209) sums communication system data signals received from shared communication ports (201) and presents the resulting summed communication data to the dedicated communication port (203). The master switching center (207) presents the summed communication data, received via the dedicated communication port (203), to the signal destination, thus augmenting listening capacity of the signal destination.
    • 通过提供通过专用通信端口(203)链接的主交换中心(207)和从交换中心(209)来增强信号目的地的收听能力。 在主交换中心(207)的指导下,从交换中心(209)将从共享通信端口(201)接收的通信系统数据信号相加并将所得到的相加的通信数据呈现给专用通信端口(203)。 主交换中心(207)将通过专用通信端口(203)接收的相加的通信数据呈现给信号目的地,从而增加信号目的地的监听能力。