Light activated RFID tag
First Claim
1. A radio frequency identification device (RFID) arranged for use with a remote interrogator unit, said RFID device comprising:
- a. an integrated circuit configured to send, in response to a signal received from a remote interrogator unit, a responsive signal which includes identification information; and
,b. an array of photovoltaic cells serving as a power supply by converting light radiation into electrical energy and supplying power to the integrated circuit, said array of photovoltaic cells being arranged in a geometry to serve as a communication antenna electrically coupled to said integrated circuit to provide for wireless communication with the remote interrogator unit.
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0 Petitions
Accused Products
Abstract
A radio frequency identification (RFID) device is arranged for use with a remote interrogator unit. The RFID device comprises an integrated circuit configured to send, in response to a signal received from the remote interrogator unit or automatically, a responsive signal which includes identification information. A communication antenna is electrically coupled to the integrated circuit and is provided for wireless communication with the remote interrogator unit. At least one photovoltaic cell is provided for converting radiation into electrical energy and providing power to the integrated circuit. The photocell may be designed to form all or part of the RF antenna of the RFID device.
54 Citations
29 Claims
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1. A radio frequency identification device (RFID) arranged for use with a remote interrogator unit, said RFID device comprising:
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a. an integrated circuit configured to send, in response to a signal received from a remote interrogator unit, a responsive signal which includes identification information; and
,b. an array of photovoltaic cells serving as a power supply by converting light radiation into electrical energy and supplying power to the integrated circuit, said array of photovoltaic cells being arranged in a geometry to serve as a communication antenna electrically coupled to said integrated circuit to provide for wireless communication with the remote interrogator unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for tracking a plurality of movable objects, the system comprising:
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a. at least one movable object to be tracked; b. a radio frequency identification (RFID) device coupled to the moving object; c. a remote interrogator unit arranged for use with said RFID device; and
,d. said RFID device being configured to identify said at least one moveable object and to store identification information associated with said at least one moveable object, said RFID device comprising an integrated circuit configured to send, in response to a signal received from said remote interrogator unit, a responsive signal which includes said identification information, said RFID device further comprising an array of photovoltaic cells serving as a power supply by converting light radiation into electrical energy and supplying power to the integrated circuit, said array of photovoltaic cells being arranged in a geometry to serve as a communication antenna electrically coupled to said integrated circuit to provide for wireless communication with the remote interrogator unit.
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Specification