发明名称 SECURE CONTROL OF SECURITY MODE
摘要 <p>A system to change security levels is used to change the level of security used in a secured processing system. The system uses a status indicator to designate the security level being implemented. The security level can be upgraded to allow a higher level of security to be implemented with relative ease. However, in order to change from a higher level of security to a lower level of security, an authorization code is utilized to confirm that the change in security is authorized.</p>
申请公布号 WO0076117(A1) 申请公布日期 2000.12.14
申请号 WO2000US15870 申请日期 2000.06.08
申请人 GENERAL INSTRUMENT CORPORATION;QIU, XIN;MORONEY, PAUL;SPRUNK, ERIC, J. 发明人 QIU, XIN;MORONEY, PAUL;SPRUNK, ERIC, J.
分类号 H04L9/00;H04N7/167;H04N21/266;H04N21/4623;(IPC1-7):H04L9/00 主分类号 H04L9/00
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