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. 22, 2005
Filed:
May. 07, 2001
Christian L. Houlberg, Ventura, CA (US);
Gary S. Borgen, Camarillo, CA (US);
Christian L. Houlberg, Ventura, CA (US);
Gary S. Borgen, Camarillo, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A method using a Non-Volatile Memory circuit which operates as an interface between a key loader and an encryption device in a missile's telemetry system. The method includes a step for storing a crypto key and an associated check word and a backup crypto key and check word in the EEPROM of a microcontroller, and a step for indicating the status of a load of the crypto key in the microcontroller as well as a step for indicating the status of an erase of the crypto key from the microcontroller. The method also includes a step for turning off the missile's transmitter when a key load occurs to prevents transmission of the crypto key and its corresponding check word. The method further includes a step for erasing the crypto key and its associated check word from an EEPROM within the microcontroller upon a missile launch.