发明名称 Method and apparatus for providing a secure system time
摘要 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.
申请公布号 US7929483(B2) 申请公布日期 2011.04.19
申请号 US20040026413 申请日期 2004.12.30
申请人 GENERAL INSTRUMENT CORPORATION 发明人 KIMBALL BRIDGET D.;HABRAT MICHAEL T.;OKIMOTO JOHN I.;PETTY DOUGLAS M.;SPRUNK ERIC J.;TANG LAWRENCE W.
分类号 H04B7/212 主分类号 H04B7/212
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