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:
Apr. 05, 1994
Filed:
Nov. 05, 1992
Applicant:
Inventor:
Keith I Mulford, Arlington Heights, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380 21 ; 380 42 ;
Abstract
In a communication system (300), a controller interface (302) provides for monitoring of channel activity in order to determine communication devices (400) which are communicating using old encryption information. Upon a key management controller (306) determining that one or more communication devices are using an old encryption scheme, the key management controller (306) establishes communications with the communication device(s) (400) and provides them with the new encryption information.