Patent ID: 7859327
Filing Date: 2010-12-28
Classification: G01P,H03K

Abstract:
1. A device for filtering a signal representative of a phenomenon of determined instantaneous period, delivered as output by at least one sensor installed in a motor vehicle, characterized in that it comprises: a comparator (A) offering as output a first logic signal (S a clock (G) delivering a signal (S means (E, D, F) making it possible to fix a filtering time (T a counter (F) whose counting is triggered by said control block (C) when said second logic signal (S a register (E) storing a fraction of the value contained in the counter (F) on receipt of a storage command signal (Str) emanating from the control block (C), said storage command signal (Str) being dispatched when at least one change of state is detected on said first logic signal (S a down counter (D) containing the value stored in said register (E) and of which a first countdown is triggered by said control block (C) when at least one change of state is detected on said second logic signal (S a suppression block (B) receiving as input said first logic signal (S a control block (C) managing at least the set of the signals of the device, and having as input signals at least said first and second logic signals (S