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 Title: |
US5355414:
Computer security system
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Hale, Robert P.; Irvine, CA
Kurashige, Jason T.; Irvine, CA
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| Assignee: |
AST Research, Inc., Irvine, CA
other patents from AST RESEARCH, INC. (42085) (approx. 170)
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| Published / Filed: |
1994-10-11
/ 1993-01-21
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| Application Number: |
US1993000007170
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| IPC Code: |
Advanced:
G06F 21/00;
Core:
more...
IPC-7:
G06F 13/12;
H04L 9/32;
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| ECLA Code: |
G06F21/00N5A2; G06F21/00N1V1;
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| U.S. Class: |
Current:
726/034;
708/135;
713/183;
Original:
380/025;
380/004;
364/709.05;
364/DIG.1;
364/DIG.2;
364/234.2;
364/928.2;
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| Field of Search: |
380/004,25
364/709.05,234,234.2,928,928.2
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| Priority Number: |
| 1993-01-21 |
US1993000007170 |
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| Abstract: |
A computer security device for preventing unauthorized access to a computer system automatically disables peripheral device access to the computer system after the peripheral input devices remain inactive for a predetermined period. The system comprises a host computer which is in communication with a keyboard controller and a display. The keyboard controller is in communication with one or more peripheral input devices such as a keyboard and a mouse. The computer security device operates in the keyboard controller, independent from the host. The keyboard controller activates security after a preset time period during which the mouse and keyboard remain inactive. When the security is active, the keyboard controller disables transfers to the host computer from the peripheral input devices. In order to re-enable peripheral device access to the host computer, a user enters a correct password on the keyboard. In a preferred embodiment, the display is also deactivated when security is active. Thus, if the user leaves a computer station, any information which was displayed on the screen is not viewable.
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| Attorney, Agent or Firm: |
Knobbe, Martens, Olson & Bear ;
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| Primary / Asst. Examiners: |
Barron, Jr., Gilberto;
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 18 claims |
We claim:
1. A security system for a computer, said security system operating independently of a host computer to disable access to an operating system of the host computer when security measures are activated, said security system comprising:
- at least one peripheral input device; and
- a microprocessor based peripheral device controller in communication with said host computer and said at least one peripheral input device, said peripheral device controller providing an interface between said at least one peripheral input device and said host computer, said peripheral device controller, independent of said host computer, responsive to the elapsing of a predetermined period during which said at least one peripheral input device remains inactive to automatically inhibit access to said host computer after said predetermined period has elapsed, said peripheral device controller further responsive to entry of predesignated signals from said at least one peripheral input device to permit access to said host computer.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 63 U.S. patent(s) that reference this one
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