Computer system having security functions and a security method

Details Computer system having security functions and a security method Computer system having security functions and a security method

1996-10-16

1999-07-13

Beausoliel, Jr., Robert W.

G06F 1100

Patent

active

059238410

ABSTRACT:
A computer system having security functions according to an exemplary embodiment of the present invention includes a keyboard for enabling a user to select a user mode from a plurality of user modes, and input a password corresponding to the selected user mode. Each one of the user modes has a unique password. A central processing unit determines whether the password corresponding to the selected user mode is correctly input by the user, and outputs a mode signal indicative of the selected user mode when the password corresponding to the selected user mode is correctly input by the user. The central processing unit further outputs first and second control signals to control the computer system. A disk drive controller controls a disk drive according to the first control signal output from the central processing unit. An output device controller controls an output device according to the second control signal output from the central processing unit. A controller restricts operations of the disk drive controller and the output device controller according to the mode signal when the first and second control signals are respectively input to the disk drive controller and the output device controller.

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