| 摘要 |
<p>A sampling impulse phase detecting circuit, particularly for use in a receiving station of a differential biphase type coding base band data transmission system comprising a gate circuit which receives on one of its inputs sampling impulses and on its other input the output impulses of a base band signal differentiating circuit, the detecting circuit being characterized in that it comprises a S-R type bistable circuit which is switched to its ON state by inverted sampling impulses and is switched to its OFF state by impulses available at the output of the said gate circuit, as well as in that the output of the bistable circuit is connected to a first input of a first logic product circuit which receives on its second input the sampling impulses and on a third input the sampling impulses delayed by 1/4 of a period (d + 90.degree., or e + 90.degree.). It is further characterized in that at the output circuit an integrating circuit is located having its output connected to a second logic product circuit which receives on its other input sampling impulses and generates, on its output, the said correction impulses.</p> |
