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US 7,079,034 B2Granted
RFID transponder for a security system
AssigneeInGrid, Inc.
InventorLouis A. Stilp
Life of this patent
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AssigneeInGrid, Inc.
InventorLouis A. Stilp
Estimating the term…
An RFID transponder for use in a security system based upon RFID techniques. The RFID transponder may be connected to an intrusion sensor. Example intrusion sensors are magnetically sensitive relay or LED detectors. The RFID transponder may also be connected to a passive infrared sensor. The RFID transponder can contain a battery, and the battery can be recharged by receiving and converting RF energy transmitted by the RFID reader. The security system also supports RFID transponders that may be carried by persons or animals, of that may contain a button used to signal an event such as an emergency. The RFID transponder typically uses backscatter modulation for responses, and can accept various modulation techniques for inbound wireless communications. The RFID transponder only responds when permitted.
An RFID transponder configured for use in a security system including at least a first RFID reader and at least a first controller controlling transmissions from the RFID reader, the RFID transponder is connected to an intrusion sensor and being enrolled with the controller and
An RFID transponder configured for use in a security system including at least a first RFID reader and at least a first controller controlling transmissions from the RFID reader, the RFID transponder is connected to an intrusion sensor and being enrolled with the controller, comprising means for fixing the transponder in a static location relative to the RFID reader, receiving RF energy transmitted from the RFID reader, interpreting the received RF energy to determine whether a response is permitted, determining whether it has a response to send to the RFID reader, and only sending a wireless communication to the RFID reader (a) in response to received RF energy, (b) if a response is permitted, and (c) if the RFID transponder has any response to send.
Dependencies are inferred from the claim text.