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.

Date of Patent:
Aug. 27, 1996

Filed:

Sep. 27, 1994
Applicant:
Inventor:

Kazumasa Kuroshita, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ; H04L / ;
U.S. Cl.
CPC ...
370 17 ; 370 941 ; 370 8513 ; 34082554 ; 364562 ; 364569 ;
Abstract

In measuring the distance and the positional relationship between the equipments on a LAN, a first equipment transmits a request packet to each of the other equipments at a predetermined interval of time. When each of the other equipments receives the request packet, it supplies the response packet to the first equipment. The first equipment calculates the distance between the first equipment and each of the other equipments on the basis of the time at which the request packet has been transmitted and the time at which the response packet has been received, and stores the calculated distance in the network structure information table NWT. Since the packet transmission speed changes in accordance with the traffic volume, the calculated distance is compared with the distance stored in the network structure information table NWT, and only when the calculated distance is shorter, it is stored in the network structure information table NWT.


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