Arrangement for a frame synchronisation is divided into blocks by means of a synchronous digitally follow within the scope of the blocking code bc, structured.

摘要

This device comprises a frame-alignment word configuration- searching circuit (10) generating, with each configuration recognised, a recognition signal routed to a frame-alignment acquisition control circuit (80) via a configuration-selection circuit (70) operating under the control of a time-window definition circuit (60) driven by a block time base (30) and a frame time base (40) and permitting selection solely of those recognition signals corresponding to alignment-word configurations which are correctly positioned relative to the partitioning of blocks. The sort performed by the configuration-selection circuit (70) makes it possible to eliminate most of the imitations of the alignment word and consequently to greatly accelerate the resynchronisation procedures. …IMAGE…