Method and apparatus involving global positioning and long-range wireless link using a tag
First Claim
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1. An apparatus comprising a tag comprising:
- a transmitter for transmitting first wireless signals; and
a receiver for receiving second wireless signals from which said tag can determine its current physical location;
wherein said tag includes a memory that stores a database containing information for identifying a plurality of known readers, that can each receive said first wireless signals, and for identifying the physical location of each of the known readers.
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Abstract
A tag has a transmitter for transmitting first wireless signals, and a receiver for receiving second wireless signals from which the tag can determine its current physical location. A different embodiment includes a tag having a transmitter for transmitting wireless signals, and a reader having a receiver for receiving the wireless signals, the receiver in the reader being an ultra-sensitive receiver.
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Citations
24 Claims
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1. An apparatus comprising a tag comprising:
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a transmitter for transmitting first wireless signals; and a receiver for receiving second wireless signals from which said tag can determine its current physical location; wherein said tag includes a memory that stores a database containing information for identifying a plurality of known readers, that can each receive said first wireless signals, and for identifying the physical location of each of the known readers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for operating a tag having a transmitter and a receiver, comprising:
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transmitting first wireless signals through said transmitter; receiving second wireless signals through said receiver; determining a current physical location of said tag as a function of said second wireless signals; and storing within said tag a database containing information identifying a plurality of known readers that can each receive said first wireless signals, and identifying the physical location of each of the known readers. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification