A computer system having a function of interrupting lewd/violent programs which includes a read-only-memory for storing an initialization program and a security grade setup program; a non-volatile memory device for storing a security grade which is a program classification code selected by a user for...http://www.google.ca/patents/US5978920?utm_source=gb-gplus-sharePatent US5978920 - Computer system having a function for intercepting lewd/violent programs and method for controlling access of such lewd/violent programs
