Propagation time difference compensation device esp. for digital transmissions

摘要

The method operates on signals transmitted from a main station (1) to a number of subordinate stations (2) where a calculating device (4) incorporates synchronising and compensating devices (5,6). Propagation times over the links (3) are measured automatically (7) at the transmitter. The compensating device automatically calculates the difference in propagation time from the difference between an accepted maximum and the actual time in each link. A corresponding delay is then automatically introduced into the memory of the synchroniser.