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:
Feb. 06, 2001
Filed:
Feb. 17, 1998
Applicant:
Assignee:
Okuma Corporation, Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 1/228 ; H04L 7/00 ; H04J 3/06 ;
U.S. Cl.
CPC ...
H04L 1/228 ; H04L 7/00 ; H04J 3/06 ;
Abstract
A device and an initializing method for use in a ring communication path, which can highly accurately synchronize time of the master and slave stations so as to achieve accurate communication among those stations. According to this device and method in which timers of respective slave stations connected to a ring communication path are synchronized using a specific communication frame, a master station recognizes the number of slave stations and their connection sequences, and notifies each of the slave stations of an individual communication delay time. Respective slave stations correct their timers so as to agree to that of the master station.