H - Electricity – 03 – L
Patent
H - Electricity
03
L
328/82
H03L 7/00 (2006.01) H04L 7/033 (2006.01)
Patent
CA 1133993
ABSTRACT OF THE DISCLOSURE: A sampling impulse phase detecting circuit, parti- cularly for use in a receiving station of a differential bi- phase type coding base band data transmission system com- prising a gate circuit which receives on one of its inputs sampling impulses and on its other input the output impul- ses of a base band signal differentiating circuit, the detec- ting 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 con- nected 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°, or e + 90°). 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.
335972
Antonini Atus
Rossi Ugo W.
Italtel S.p.a.
Robic Robic & Associes/associates
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