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. 24, 1991
Filed:
Jul. 18, 1989
Tom E Conlon, Reading, GB;
Racal-Milgo Limited, Bracknell, GB;
Abstract
A data transmission network comprises a plurality of interconnected nodes and input/output units. In response to receipt of a data message for onward transmission through the network, each node accesses information which it stores relating to the then current topology of the network and transmits the message through the appropriate connecting links. Each node operates according to a predetermined algorithm to up-date its stored topology information. Each node at any given time assumes a particular state, state n. When in this state, it interrogates immediately each neighboring node with the question 'Who are the neighbors of node of distance (n-1) from you?' where 'distance' is defined in terms of the number of links. The addressed nodes respond either by returning the requested information in the form of a positive reply or by responding 'Don't yet know'. Each node advances to state (n+1) after it has received a consistent set of positive replies from all its neighbors and then repeats the question, again to each of its immediate neighbors but now concerning the identities of the next more distant nodes. The information received as it advances through the states is stored and thus up-dates the topology information.