公开(公告)号：US20160021408A1

公开(公告)日：2016-01-21

申请号：US14868127

申请日：2015-09-28

Applicant: Core Wireless Licensing S.a.r.I

Inventor： Tero Reinikainen ,  Henri Hämäläinen ,  Arto Kiiskinen

IPC: H04N21/254 ,  H04N21/414 ,  H04N21/4627

CPC classification number: H04N21/2541 ,  G06F21/10 ,  H04H60/14 ,  H04H60/40 ,  H04H2201/37 ,  H04N21/41407 ,  H04N21/4627

Abstract: A method, system, mobile device, apparatus and computer program product are provided for accurately determining whether one or more rights objects associated with a mobile device are valid. In particular, a secure time source (e.g., DRM clock or time) may be maintained by the mobile device and used to check the validity of the one or more rights objects. In order to ensure that the secure time source or clock remains accurate, the mobile device may update the secure time source by regularly requesting and receiving the DVB-H network time from a DVB-H network entity. Because the DVB-H network time is secure, accurate and readily accessible, it provides an ideal tool for correcting possible drift in the mobile device's secure time source.

Abstract translation: 提供了一种方法，系统，移动设备，装置和计算机程序产品，用于准确地确定与移动设备相关联的一个或多个权限对象是否有效。 特别地，移动设备可以维护安全的时间源（例如，DRM时钟或时间），并用于检查一个或多个权限对象的有效性。 为了确保安全时间源或时钟保持准确，移动设备可以通过从DVB-H网络实体定期请求和接收DVB-H网络时间来更新安全时间源。 由于DVB-H网络时间安全，准确，易于访问，因此它为纠正移动设备安全时间源可能发生的漂移提供了理想的工具。