Abstract: Method for correcting the signal (30) of a sensor corresponding to the passage of teeth (20b) and of hollows (20d) of a target (20) secured to an engine camshaft, characterized in that duration measurement is used to evaluate the angular values (&agr;T,&agr;N) of the alternations (30b, 30d) of the signal corresponding to the teeth and to the hollows, these angular values are compared with the mechanical angles (&ggr;T,&ggr;N) of the teeth and of the hollows, and from this a phase shift (&agr;1,&agr;2) of the rising (30a) and falling (30c) fronts of the signal with respect to the corresponding flanks (20a, 20c) of the teeth of the target is deduced. When said teeth and hollows extend over equal angular sectors, the phase shifts are calculated directly by comparing the duration measurements of two consecutive alternations (30b, 30d) of the signal.

Abstract: Method for correcting the signal (30) of a sensor corresponding to the passage of teeth (20b) and of hollows (20d) of a target (20) secured to an engine camshaft, characterized in that duration measurement is used to evaluate the angular values (&agr;T, &agr;N) of the alternations (30b, 30d) of the signal corresponding to the teeth and to the hollows, these angular values are compared with the mechanical angles (&ggr;T,&ggr;N) of the teeth and of the hollows, and from this a phase shift (&agr;1,&agr;2) of the rising (30a) and falling (30c) fronts of the signal with respect to the corresponding flanks (20a, 20c) of the teeth of the target is deduced. When said teeth and hollows extend over equal angular sectors, the phase shifts are calculated directly by comparing the duration measurements of two consecutive alternations (30b, 30d) of the signal.