Intelligent security system
First Claim
1. An intelligent security system, said system comprising:
- scanner means to detect the presence of a predetermined object and to transmit an encrypted interrogation signal upon so detecting the object;
a passive transceiver means carried by the object, said passive transceiver means comprising first circuit means for receiving said encrypted interrogation signal, rectifying said interrogation signal to provide a source of power for said transceiver means, and decoding said interrogation signal, and second circuit means for transmitting a predetermined encoded response signal in response to a predetermined said decoded interrogation signal;
a response signal decoder means operatively connected to said scanner means to receive and decode said response signal; and
a central processing unit operatively connected to said response signal decoder means to receive and process said decoded response signal.
3 Assignments
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Accused Products
Abstract
An intelligent security system capable of sensing the presence of an object to be identified, interrogating the object with an encrypted code, and receiving and processing an encoded response from a passive transceiver carried by the object so that the intelligent security system can be utilized for controlling access to a location, performing inventory control, controlling toll access systems, operating multi-station complex machinery systems, or providing object locating information, for example. The intelligent security system is particularly characterized by its utilization of a totally passive transceiver including a transmit circuit which will only be activated upon receipt by the transceiver of a predetermined encrypted interrogation signal. In response to receipt of a proper interrogation signal, an encoded response signal is transmitted by the passive transceiver and then received, decoded and processed by other elements of the security system.
250 Citations
11 Claims
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1. An intelligent security system, said system comprising:
- scanner means to detect the presence of a predetermined object and to transmit an encrypted interrogation signal upon so detecting the object;
a passive transceiver means carried by the object, said passive transceiver means comprising first circuit means for receiving said encrypted interrogation signal, rectifying said interrogation signal to provide a source of power for said transceiver means, and decoding said interrogation signal, and second circuit means for transmitting a predetermined encoded response signal in response to a predetermined said decoded interrogation signal;
a response signal decoder means operatively connected to said scanner means to receive and decode said response signal; and
a central processing unit operatively connected to said response signal decoder means to receive and process said decoded response signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- scanner means to detect the presence of a predetermined object and to transmit an encrypted interrogation signal upon so detecting the object;
Specification