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:
Nov. 12, 2002
Filed:
Apr. 23, 1998
Applicant:
Inventor:
Richard J Proctor, Corfe Mullen, GB;
Assignee:
Marconi Communications Limited, Coventry, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 ; H04K 1/10 ;
U.S. Cl.
CPC ...
H04L 9/00 ; H04K 1/10 ;
Abstract
In an Asynchronous Transfer Mode telecommunications network having a plurality of virtual paths or circuits, an encryption key used for data transmitted between a source and a receiver may be updated, the data being transmitted initially using a first encryption key by a first of the plurality of virtual paths or circuits, by a connection being estabished by a second of the plurality of virtual paths or circuits and sending a second encryption key by that connection from the source to the receiver and subsequently transmitting the data using the second encryption key by the second of the plurality of virtual paths or circuits.