| 摘要 |
A phase follow-up regulating circuit utilising the delay locked loop principle in the receiver of a system in which a pseudo-random generator is provided for coding at the transmitter and an identical generator operated in synchronism therewith at the transmitter, in which the phase-loop control is effected via two parallel channels whose characteristics may differ to some extent, any adverse affect being prevented by operating commutators provided, one between the generator and the channel inputs, and the other between the channel outputs and a combining element, the commutators switching over the channels periodically in a mutually synchronised manner. |
