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:
Apr. 19, 2011
Filed:
Dec. 30, 2004
Bridget D. Kimball, Encinitas, CA (US);
Michael T. Habrat, San Diego, CA (US);
John I. Okimoto, San Diego, CA (US);
Douglas M. Petty, San Diego, CA (US);
Eric J. Sprunk, Carlsbad, CA (US);
Lawrence W. Tang, San Diego, CA (US);
Bridget D. Kimball, Encinitas, CA (US);
Michael T. Habrat, San Diego, CA (US);
John I. Okimoto, San Diego, CA (US);
Douglas M. Petty, San Diego, CA (US);
Eric J. Sprunk, Carlsbad, CA (US);
Lawrence W. Tang, San Diego, CA (US);
General Instrument Corporation, Horsham, PA (US);
Abstract
The present invention discloses a system and method for providing a secured system time reference to a subscriber device, e.g., a set top box or a receiver. In one embodiment, the system time reference is provided in a secure system time message that is broadcasted to a plurality of subscriber devices. Each subscriber device has a security device or software application that is capable of determining whether the received system time reference is legitimate. If the system time reference is determined to be legitimate, a local time reference is synchronized with said received system time reference.