| 摘要 |
<p>A detector circuit for detecting a state change of an unknown binary signal (T) comprises a control circuit generating two pulse sequences (P1,P2) which are shifted in time against each other and two flip-flops (25,26). The first pulse sequence (P1) activates the first flip-flop (25) and clears the second (26) one, whereas the second pulse sequence (P2) activates the second flip-flop (26) and clears the first one (25). Therefore, the two flip-flops (25,26) are prepared to trigger on transitions of the unknown binary signal (T) to be tested alternatingly. Such a detector circuit can be used to avoid undue restrictions caused by the necessary recovery time of a single flip-flop.</p> |
