Method for synchronizing the phase of clock signals of two clock

Details Method for synchronizing the phase of clock signals of two clock Method for synchronizing the phase of clock signals of two clock

1990-03-27

1991-09-24

Safourek, Benedict V.

Pulse or digital communications

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331 49, 370103, 455 51, 455 71, H03B 1900

Patent

active

050520288

ABSTRACT:
Method for synchronizing the phase of clock signals of two clock generators in communications networks. Using the present method, the phase relations of clock signals that are derived from oscillator clock signals in two clock generators are synchronized such that the phase relations of the clock signals coincide regardless of the distance between the two clock generators. To this end, one clock generator is defined as a reference clock generator and reference clock signals formed therein are communicated to the other further clock generator. In the latter, the generated further clock signals are synchronized with the incoming reference clock signals and the clock signals synchronized in this fashion are forwarded to the reference clock generator. In the latter, the phase deviation of the internally formed clock signals and of the incoming clock signals is measured and correction information is formed and forwarded to the other further clock generator. The phase relation of the clock signals is corrected in the other further clock generator in conformity with the correction information.

REFERENCES:
patent: 3453592 (1969-07-01), Ishii et al.
patent: 3541552 (1970-11-01), Carlson
patent: 3560869 (1971-02-01), Miller
patent: 3801981 (1974-04-01), Alpers
patent: 3862365 (1975-01-01), Kobayashi et al.
"A Microprocessor-Controlled Phase Locked Loop for Network Synchronization", Proceedings 1979 ISCAS, pp. 804-805.

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