Wireless proximity detector security feature
First Claim
1. A computer system which stores and processes data, which computer system includes a security system to control access to that data in the event of an unauthorized movement of such system through a gate where radiation having a first distinctive characteristic is present and where radiation having a second distinctive characteristic is selective applied in response to radiation signals bearing identifying characteristics, said computer system comprising:
- an electronic computing apparatus which when energized becomes operative by sequencing through a power on logic that performs set up operations;
a first detector for radiation having the first distinctive characteristic, which first detector upon a detection responsively produces a selection signal to indicate a detection has occurred;
identification logic which responds to the selection signal to generate a radiation signal bearing identifying characteristics;
a second detector which responds to radiation having the second distinctive characteristic to produce an alarm signal; and
security logic connected to the second detector to receive said alarm signal and cooperating with said power-on logic to block said electronic computing apparatus from becoming operative in response to said alarm signal whereby said computer system maybe selectively disabled upon passing through said gate.
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Accused Products
Abstract
A security system for computers defines a control zone using radiation, preferably at radio frequency, having a distinctive characteristic, such as a particular frequency. The zone may be established, for example, at a door exit or other limited passage to a secured area. Computer systems are provided with receivers that detect the distinctive characteristic and responsively produce an alarm signal which triggers security logic. The security logic cooperates with the start-up logic of the computer and disables start-up so that the computer becomes inoperative. In a more complex variation, the radiation triggers a device in the computer that in turn sends out a serial number signal. A receiver located near the control zone applies the serial number to a table look up computer that triggers an emergency signal if a match to an authorized list of serial numbers does not occur. The emergency signal activates a transmitter that sends out a radiation signal with a second distinctive characteristic. A second receiver in the computer then responds to the radiation with the second characteristic to trigger the security logic to render the computer inoperative.
105 Citations
6 Claims
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1. A computer system which stores and processes data, which computer system includes a security system to control access to that data in the event of an unauthorized movement of such system through a gate where radiation having a first distinctive characteristic is present and where radiation having a second distinctive characteristic is selective applied in response to radiation signals bearing identifying characteristics, said computer system comprising:
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an electronic computing apparatus which when energized becomes operative by sequencing through a power on logic that performs set up operations; a first detector for radiation having the first distinctive characteristic, which first detector upon a detection responsively produces a selection signal to indicate a detection has occurred; identification logic which responds to the selection signal to generate a radiation signal bearing identifying characteristics; a second detector which responds to radiation having the second distinctive characteristic to produce an alarm signal; and security logic connected to the second detector to receive said alarm signal and cooperating with said power-on logic to block said electronic computing apparatus from becoming operative in response to said alarm signal whereby said computer system maybe selectively disabled upon passing through said gate. - View Dependent Claims (2, 3)
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4. A security system for user systems at an enclosure having a portal defining an exit point, said security system comprising:
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a first radiation transmitter at the portal exposing said portal to radiation having a first distinctive characteristic; at least one user system having start up logic that, on energization, sequences the user system through a process to become operational, said user system having an identifier device that detects radiation having said first distinctive characteristic and responsively emits radiation bearing a respective encoded identification signal; a receiver near said portal, responsive to said identification signal, which reciver performs a search on a defined list of identifier codes to determine if the received encoded identification signal is listed and produces an alarm signal if no match is found; a transmitter responsive to the alarm signal to emit radiation having a second distinctive characteristic into the portal; a receiver mounted in said user system which is responsive to radiation having said second distinctive characteristic to produce a system alarm signal; and
security logic, cooperating with said start-up logic and responsive to said system alarm signal, to disable said start-up logic from making said computer system operative, whereby said computer system maybe selectively disabled at said portal. - View Dependent Claims (5, 6)
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Specification