| 摘要 |
The invention relates to a filter device (341, 342) for detecting and/or removing erroneous components like noise, deformations, glitch components or other errors in and/or from a signal, to a demodulation device using the filter device, to an information transmission system using the demodulation device and to a method for detecting a noise impulse in an input signal (Calpha(t), Calpha[k]). The filter device includes a summing element (510-51N, 610) connected to a correction element (540, 640). The summing element (510-51N, 610) sums the input signal (Calpha(t), Calpha[k]) within a reference interval (N) and the correction element (540, 640) verifies the summed input signal (IS[k]) with at least one signal condition (0, N+1, DeltaCalpha[k]). Finally, the correction element (540, 640) outputs a predetermined signal (Calphaalpha[k]) based on the result of the verification between the summed input signal (IS[k]) with at least one signal condition (0, N+1, DeltaCalpha[k]). The foregoing filter device is able to remove noise from an input signal. This stabilizes the input signal against environmental influences occurring e.g. during signal transmission.
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