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:
Jul. 10, 2001
Filed:
Feb. 26, 1998
Morris Anthony Moore, Southlake, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A first service provider having a highest security of access, initially programs (,) tables in a subscriber unit (,), including an address table (,) having entries including addresses to which the subscriber unit is responsive, a sub-address table (,) including a sub-address identifier and a corresponding first pointer to a first decryption key for an algorithm required to decrypt a sub-message associated with the sub-address identifier, and a key table (,) including the first decryption key. A second service provider having a security of access less than that of the first service provider reprograms (,) an attribute of at least one of the sub-address table and the key table. The second service provider obtains reprogramming access by encrypting a first reprogramming message such that it can be properly decrypted using the first decryption key.