The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1999
Filed:
Jan. 15, 1997
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
34082514 ; 34082516 ; 3408252 ; 375358 ; 375365 ; 375357 ; 370509 ;
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.