Vorrichtung zum Empfang von über zwei kapazitiv gekoppelte Leitungen durchgehenden Informationen, insbesondere für Kraftfahrzeuge.

摘要

This device for receiving information travelling on two differential-mode information transmission lines (1, 2), with capacitive coupling, of the type comprising a comparator (3), each input of which receives signals from one information transmission line (1, 2) across a capacitor (4, 5), is characterised in that means of forced switching (6) are interposed between the information transmission lines (1, 2) and the inputs of the comparator (3), the output of the latter being connected to one input of an OR gate (7), the other input of which receives a signal for reinitialising a protocol decoder, and the output of which is connected directly and across an invertor to the means of forced switching (6) in order to reinitialise the comparator when the latter is locked in a dominant state following a spurious signal. The switching means are adapted so as to create an opposed hysteresis at the terminals of the comparator.