公开(公告)号：US5805639A

公开(公告)日：1998-09-08

申请号：US535714

申请日：1995-09-28

申请人： Reiner Tonch ,  Lajos Gazsi ,  Ferenc Leeb

发明人： Reiner Tonch ,  Lajos Gazsi ,  Ferenc Leeb

IPC分类号： H03H21/00 ,  H04B3/06 ,  H04L25/06 ,  H03H7/30 ,  H03H7/40

CPC分类号： H03H21/0012 ,  H04L25/061 ,  H04L25/064

摘要： An adaptive network includes a summation node for receiving an input signal and delivering an output signal. A decision unit receives the output signal of the summation node as an input signal and has an output for delivering an output signal being a differential signal between the input and output signals of the decision unit. An adaptive feedback branch receives the output signal of the decision unit and has status variables, coefficients and an output. A changeover switch unit couples the output of the feedback branch to the summation node. A monitoring unit monitors an error magnitude of the output signal of the decision unit. The monitoring unit triggers the changeover switch unit in the next clock cycle if a first signal value having an amplitude exceeding a certain threshold value appears, for causing the summation node to be acted upon by a digital zero signal, for setting the status variables of the feedback branch to zero and for freezing the coefficients of the feedback branch.

摘要翻译： 自适应网络包括用于接收输入信号并传送输出信号的求和节点。 决定单元接收求和节点的输出信号作为输入信号，并且具有用于在作为判定单元的输入和输出信号之间传送作为差分信号的输出信号的输出。 自适应反馈分支接收决策单元的输出信号，并具有状态变量，系数和输出。 转换开关单元将反馈分支的输出耦合到求和节点。 监视单元监视决策单元的输出信号的误差大小。 如果出现振幅超过特定阈值的第一信号值，则监视单元在下一个时钟周期触发转换开关单元，以使求和节点被数字零信号作用，以便设置状态变量 反馈分支为零并冻结反馈分支的系数。

公开(公告)号：US5629881A

公开(公告)日：1997-05-13

申请号：US404366

申请日：1995-03-15

申请人： Ferenc Leeb ,  Lajos Gazsi

发明人： Ferenc Leeb ,  Lajos Gazsi

IPC分类号： H03M3/04 ,  H03H17/02 ,  G06F17/10 ,  G06F7/38

CPC分类号： H03H17/02

摘要： A method and a circuit configuration for filtering a digital value with improved noise behavior include adding a digital input value and a feedback value to form a digital output value. The feedback value is equal to a first variable from which a second variable is subtracted, from which the second variable shifted m places to the right is subtracted, and to which the first variable is added. The first variable is equal to a bottom m bits of a previous digital output value and always represents a positive value. The second variable is equal to a previous first variable from which a previous second variable shifted arithmetically by m bits to the right is subtracted. The feedback value is calculated with at least one additional least significant bit until at least a last addition with the first variable. Subsequently, an expansion is no longer taken into account.

摘要翻译： 用于用改进的噪声行为对数字值进行滤波的方法和电路配置包括增加数字输入值和反馈值以形成数字输出值。 反馈值等于从其减去第二个变量的第一个变量，减去第二个变量向右偏移的位置，并将第一个变量添加到该变量。 第一变量等于先前数字输出值的底部m位，并且总是表示正值。 第二个变量等于先前的第一个变量，减去前一个第二个变量，算术地乘以m位向右移位。 使用至少一个附加的最低有效位来计算反馈值，直到具有第一变量的至少最后一次加法为止。 随后，不再考虑扩展。