Network synchronization system

Details Network synchronization system Network synchronization system

1989-09-01

1991-10-29

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

455 51, H04L 700

Patent

active

050621246

ABSTRACT:
A network synchronization system for synchronizing a master clock in a distributed communication system composed of a plurality of communication devices interconnected by one or more transmission lines, with a reference clock supplied from outside. A phase difference obtaining circuit for obtaining a phase difference between the reference clock and a master clock in the distributed communication system, is provided in a first communication device of the plurality of communication devices, and the phase difference is transmitted from the first communication device to a second communication device through the transmission line. The second communication device comprises a controlled oscillator circuit for receiving the phase difference, and outputting a master clock having a phase which is controlled according to the output of the phase difference obtaining circuit, so that the phase of the master clock is synchronized with the phase of the reference clock.

REFERENCES:
patent: 3311702 (1967-03-01), Legler
patent: 3804992 (1974-04-01), Fiorino et al.
patent: 3862365 (1975-01-01), Kobayashi et al.

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