| 摘要 |
A device for filtering a signal delivered as output from a sensor installed in a motor vehicle includes a comparator (A) offering as output a first logic signal (S<SUB>A</SUB>) representative of the positive and negative transitions of the output signal (S<SUB>M</SUB>) from the sensor, a clock (G) delivering a signal (S<SUB>G</SUB>) serving as time base for the whole device, elements (E, D, F) making it possible to fix a filtering time (T<SUB>Filt</SUB>) of the output signal (S<SUB>M</SUB>) from the sensor, a suppression block (B) receiving as input the first logic signal (S<SUB>A</SUB>) and delivering as output a second logic signal (S<SUB>B</SUB>) whose duration of holding (tn) in a logic state depends on the filtering time (T<SUB>Filt</SUB>), and a control block (C) managing the set of the signals of the device, and having as input signals the first and second logic signals (S<SUB>A</SUB>, S<SUB>B</SUB>).
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