System for synchronizing real time clock by transmitted real tim

Details System for synchronizing real time clock by transmitted real tim System for synchronizing real time clock by transmitted real tim

1994-03-17

1996-07-09

Chin, Stephen

Pulse or digital communications

Synchronizers

Network synchronizing more than two stations

375354, 375355, 375359, 3701001, H04L 700, H04L 702, H04J 306

Patent

active

055352510

ABSTRACT:
A real time clock synchronizing system, provided in each of a plurality of network elements in a synchronous transmission network, comprises: a generating unit for generating, based on a reference clock, self-generated real time information indicating a real time of the network element. The system also includes an extracting unit for extracting reference real time information contained in an overhead area of synchronous signals received by the network element. A selector unit selects as a reference real time information to be transmitted from the network element, one of the self-generated real time information and the reference real time information extracted by the extracting unit. A transmitting unit contains the reference real time information selected by the selector unit, in an overhead area of synchronous signals to be transmitted from the network element.

REFERENCES:
patent: 3665405 (1972-05-01), Sanders
patent: 4530091 (1985-07-01), Crockett
patent: 4677614 (1987-06-01), Circo
patent: 4679188 (1987-07-01), Fukuda
patent: 4709347 (1987-11-01), Kirk
patent: 4794624 (1988-12-01), Braun
patent: 5062124 (1991-10-01), Hayashi
patent: 5063596 (1991-11-01), Dyke
patent: 5184347 (1993-02-01), Farwell
patent: 5331667 (1994-07-01), Izumi
Klaus D. Schenkle, "The Synchronous Digital Multiplex Hierarchy--The Challenge and the Opportunities", ITG Technical Conf., Oct. 1990, pp. 41-48.
"American National Standard for Telecommunications, Digital Hierarchy--Optical Interface Rates and Formats Specifications (SONET)", a draft of ANSI T1 105, Nov. 1990.
CCITT Recommendations G.707, G.708, and G.709, Jul. 1992.

Affiliated with

Also associated with

Rating

System for synchronizing real time clock by transmitted real tim does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for synchronizing real time clock by transmitted real tim, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for synchronizing real time clock by transmitted real tim will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1874389