Method and apparatus for preventing unauthorized usage of a computer system
First Claim
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1. A security apparatus interfacing with a first device for preventing unauthorized use of a second device, said security apparatus comprising:
- a first circuit configured to generate a first event;
a second circuit configured to provide a first input to said first device in response to each of said first event, to receive a response from said first device in response to said first input, to assert a first signal to disable said second device if said response does not correspond to an expected response, and to provide a level of security corresponding to a value included in the first device; and
a third circuit configured to provide a password prompt in response to a second event, to receive a second input from a user interface and to assert a second signal to disable said second device if said second input does not correspond to said password.
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Abstract
A security apparatus interfacing with a first device for preventing unauthorized use of a second device, the security apparatus including a first circuit configured to generate an event and a second circuit configured to provide an input to the first device in response to each the event, to receive a response from the first device in response to the input, and to assert a signal to disable the second device if the response does not correspond to an expected response.
55 Citations
22 Claims
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1. A security apparatus interfacing with a first device for preventing unauthorized use of a second device, said security apparatus comprising:
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a first circuit configured to generate a first event; a second circuit configured to provide a first input to said first device in response to each of said first event, to receive a response from said first device in response to said first input, to assert a first signal to disable said second device if said response does not correspond to an expected response, and to provide a level of security corresponding to a value included in the first device; and a third circuit configured to provide a password prompt in response to a second event, to receive a second input from a user interface and to assert a second signal to disable said second device if said second input does not correspond to said password. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computer system interfacing with a first device for preventing unauthorized use, said computer system comprising:
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a first circuit configured to periodically generate a first event; a second circuit configured to provide a first input to said first device in response to each of said first event, to receive a response from said first device in response to said first input, to assert a first signal if said response does not correspond to an expected response, and to provide a level of security corresponding to a value included in the first device; a second device configured to be disabled in response to said first signal; and a third circuit configured to provide a password prompt in response to a second event, to receive a second input from a user interface and to assert a second signal to disable said second device if said second input does not correspond to said password. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification