Patent ID: 6567487
Filing Date: 2003-05-20
Classification: H03M,H04L

Abstract:
Method for the sampling of biphase coded digital signals by reception means which have at least one signal input having switchable signal edge sensitivity or at least two signal inputs having different signal edge sensitivity for the reception of such signals, whereA) the signal edge sensitivity of the at least one signal input having switchable signal edge sensitivity is set to a falling signal edge (F0) if its quiescent state logic level is â€œ1â€ , and the signal edge sensitivity of the at least one signal input is set to a rising signal edge if its quiescent state logic level is â€œ0â€ , or the signal input having the corresponding signal edge sensitivity is activated in order to detect the beginning of a signal, B) sampling of the logic level of the first half-bit of the instantaneously received bit of the signal is carried out, C) the signal edge sensitivity of the at least one signal input is set as a function of the logic level of the sampled first half-bit of the instantaneously received bit, or the signal input having the corresponding signal edge sensitivity is activated as a function of the logic level of the sampled first half-bit of the instantaneously received bit, D) a time window (&Dgr;t) is prescribed during which the occurrence of the signal edge (F1, F2, F3, F4, F5) between the first and second half-bits of the abovementioned bit of the signal is expected and evaluated as permissible, E) a check is made to determine whether the abovementioned signal edge (F1, F2, F3, F4, F5) has occurred within the prescribed time window (&Dgr;t), and, if the signal edge (F1, F2, F3, F4, F5) between the first and second half-bits has been detected within the prescribed time window (&Dgr;t), method steps B) to E) are repeated for the next bit of the signal, or the signal reception is otherwise terminated.