| 摘要 |
In a digital Content Protection System (CPS), System Renewability Messages (SRM's) are managed at an administrative level to prioritize and select SRM's depending on transmission region and/or time. The highest-priority SRM's may be selected to fit in a receiver memory size specified by a CPS. SRM's may be cycled so that different subsets of the total set of SRM's are selected for highest priority use of limited storage capacity at different times, thereby extending the effectiveness of revocation beyond the otherwise limiting factor of SRM storage capacity.
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