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:
Mar. 12, 2002
Filed:
Apr. 24, 1998
Javor Kolev, Cary, NC (US);
Aaron Cubbage, Nashville, NC (US);
Other;
Abstract
The present invention provides methods and devices for controlling the authentication and ciphering procedures in digital communication devices. In the invention, a means for transmitting and receiving radio signals is connected with a processing unit. A. SIM is provided that contains authentication and ciphering information and is also connected with the processing unit. A memory module is provided that has a first memory location reserved for a authentication flag and a second memory location reserved for a ciphering flag. During operation, an authentication indicator is activated only when the communication device is authenticated during a system access. In addition, a ciphering indicator is activated when the communication device is encrypting data being sent and received from the digital wireless network.