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:
Oct. 07, 2008
Filed:
Nov. 06, 2003
Steve Rodgers, San Diego, CA (US);
Sherman (Xuemin) Chen, San Diego, CA (US);
Steve Rodgers, San Diego, CA (US);
Sherman (Xuemin) Chen, San Diego, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
One or more methods and systems of authenticating or verifying a set-top-box chip in a set-top-box are presented. In one embodiment, a set-top-box incorporates a set-top-box chip used to decode or decrypt media content provided by a cable television operator or carrier. The set-top-box chip incorporates a decryption circuitry, a compare circuitry, a hash function circuitry, a key generation circuitry, a back channel return circuitry, a linear feedback shift register, a timer reset circuitry, a modify enable status circuitry, a one time programmable memory, and a non-volatile memory. The cable TV carrier validates a set-top-box chip used in a set-top-box by way of a verification sequence that requires a successful verification by the set-top-box chip.