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:
Jan. 29, 2019
Filed:
Sep. 30, 2010
James W. Fahrny, Parker, CO (US);
Pete Kuykendall, Centennial, CO (US);
Nancy Davoust, Louisville, CO (US);
James W. Fahrny, Parker, CO (US);
Pete Kuykendall, Centennial, CO (US);
Nancy Davoust, Louisville, CO (US);
Comcast Cable Communications, LLC, Philadelphia, PA (US);
Abstract
A security system is disclosed in which a device-specific key value is provided to a security processing device, and then used to derive additional derived keys for use in secured communications. In response to identifying a compromise of the derived keys, the system can be instructed to derive new or replacement derived keys for use in the secured communications. In some embodiments, the security system can be used in a video reception device, to decrypt encrypted video content.