SYSTEM FOR SECURING RIGHT OF PROGRAM

摘要

PURPOSE:To prevent a program from being easily changed by operating the program only with a pure information processing unit. CONSTITUTION:Next to an ordinary processing A, a pure information processing unit deciding processing to inspect the contents of the specific area of a ROM in an information processing unit and to decide whether or not the information processing unit is not an interchangeable device but a pure device is executed. As a result, when the unit is the pure information processing unit by a pure information processing unit branching processing, an ordinary processing B is executed, and when it is not the pure information processing unit, an error message display processing is executed. Next to the ordinary processing B, a processing to inspect whether the pure information processing unit deciding processing is changed or not is executed, an ordinary processing C is executed when it is changed, and the error message display processing when it is not changed. Thus, the program can be prevented from being easily changed.