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:
Sep. 28, 2010
Filed:
Apr. 24, 2007
Howard G. Pinder, Norcross, GA (US);
William D. Woodward, Jr., Lilburn, GA (US);
Jonathan Bradford Evans, Atlanta, GA (US);
Anthony J. Wasilewski, Alpharetta, GA (US);
Howard G. Pinder, Norcross, GA (US);
William D. Woodward, Jr., Lilburn, GA (US);
Jonathan Bradford Evans, Atlanta, GA (US);
Anthony J. Wasilewski, Alpharetta, GA (US);
Other;
Abstract
The present invention is directed towards providing a partial dual-encrypted stream in a conditional access overlay system. The headend equipment includes an aligner, identifier, and remapper (AIR) device () that receives a clear stream and one or two encrypted streams, where the two encrypted streams have been encrypted by two different encryption schemes. The AIR device () identifies critical packets associated with the clear stream and subsequently allows two encrypted streams to pass and drops the critical packets of the clear stream. A multiplexer () then combines a percentage of the non-critical packets of the clear stream and the critical packets of the two encrypted streams to provide the partial dual-encrypted stream.