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. 03, 2017
Filed:
Jun. 26, 2013
Nagravision S.a., Cheseaux-sur-Lausanne, CH;
Guy Moreillon, Bioley-Orjulaz, CH;
NAGRAVISION S.A., Cheseaux-sur-Lausanne, CH;
Abstract
A device to reduce bandwidth necessary for renewal of subscriptions for reception of broadcast services including: defining a plurality of sets of subscriber identification numbers, each set being associated with a product; splitting a set of subscriber identification numbers into groups of subscribers; searching for an available subscriber identification number related to the desired product at the time of initialization of a new subscriber; confirming that an inhibit duration has elapsed between the end of the previous subscription and the start of the new subscription; sending an initialization message to the new subscriber addressed with his unique identification address and containing the subscriber identification number of, and rights to, his product; preparing a group rights renewal message for the product to the group containing the subscriber identification number, this message comprising the group header containing this subscriber and a compressed bitmap for individually addressing each of the group members.