Computer system having security functions and a security method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 13, 1999
Grant Date -
N/A
app pub date -
Oct 16, 1996
filing date -
Oct 18, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully