Synchronization message transmitting apparatus

Details Synchronization message transmitting apparatus Synchronization message transmitting apparatus

1997-01-15

1999-09-21

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082516, 3408252, 375358, 375365, 375357, 370509, H04L 700

Patent

active

059559594

ABSTRACT:
A synchronization message transmitting apparatus employs a synchronization message to synchronize a communication network. If an abnormality occurs in any part of the apparatus or on a clock in the apparatus, the apparatus detects the abnormality and prepares a synchronization message indicating that a frame to be transmitted must not be used for preparing a master clock. An opposite party that receives the frame with the synchronization message will not use the received frame for preparing a master clock.

REFERENCES:
patent: 4562574 (1985-12-01), Kambayashi
patent: 4779087 (1988-10-01), Fukuda et al.
patent: 5268932 (1993-12-01), Okuzono
patent: 5438591 (1995-08-01), Oie et al.
patent: 5631931 (1997-05-01), Takano et al.
patent: 5748684 (1998-05-01), Sanchez

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