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PROTECTING COMPUTER SOFTWARE

来源:华佗小知识
专利内容由知识产权出版社提供

专利名称:PROTECTING COMPUTER SOFTWARE发明人:MICHAEL D. DUNHAM,THOMAS M.

DYKSTRA,DONALD W. VAHLSING,PAUL L.EHLERS

申请号:AU4376085申请日:19850614公开号:AU581232B2公开日:19890216

摘要:A device is disclosed for controlling the use of software, in a computer systemhaving one or more operating terminals (14, 14a,14b) and a central processing unit (16),so is prevented. The device includes interrupt means (58,70) that excessive use of thesoftware, beyond authorized limits, interposed in a data signal line (12a, 12b) and/or asecurity signal line (18) between the terminal and the central processing unit. The deviceincludes a receiver (72) for receiving usage requests. A microprocessor-based controller(60) accesses authorisation data stored in an EEPROM (82a,82b,82c). Depending on thefrequency at which unauthorised requests are occurring, the controller operates theinterrupt means and/or a transmitter (72) provides an output to disable the software andor to take other action, such as providing warning messages on the terminal screen.

申请人:EFFECTIVE SECURITY SYSTEMS, INC.

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