发明名称 METHOD FOR SOFTWARE PROTECTION
摘要 <p>METHOD FOR SOFTWARE PROTECTION A method is provided to prevent continued unauthorized use of protected software and to maintain control of sites where software is installed. The method allows unauthorized copies of the protected software to be installed and to operate for a limited time. However, if the user does not register the software within a prescribed period of time, the protected software will be disabled. Prior to disabling, the software will operate for a period of time during which messages are provided to the user, warning that the software should be registered. Both a counter for counting the number of times that the protected software is used, and a timer for measuring the elapsed time since installation of the software, are used in determining how long the protected software will be permitted to operate before either registration or disabling.</p>
申请公布号 CA1267443(A) 申请公布日期 1990.04.03
申请号 CA19870533426 申请日期 1987.03.31
申请人 NCR CORPORATION 发明人 EDWARDS, GORDON L., JR.
分类号 G06F1/00;G06F21/00;(IPC1-7):G06F1/00 主分类号 G06F1/00
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