RFID systems
First Claim
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1. Method for RFID tracking comprising:
- a) transmitting an RFID signal between a first RFID reader and a first group of passive RFID tags,b) receiving at the first RFID reader first data from the first group of passive RFID tags,c) transmitting said first data from the RFID reader to a gateway RFID tag,d) receiving and storing the first data at the gateway RFID tag,e) transmitting an RFID signal between a second RFID reader and a second group of passive RFID tags,f) receiving at the second RFID reader second data from the second group of passive RFID tags,g) transmitting said second data from the RFID reader to the gateway RFID tag,h) receiving and storing the second data at the gateway RFID tag,i) transmitting to the gateway RFID tag a query from the first RFID reader,j) receiving the query at the gateway RFID tag,k) transmitting second data from the gateway RFID tag to the first RFID reader.
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Abstract
The specification describes a new architecture for RFID systems that is adapted to process large numbers of RFID tags and provide information about a large number of items. The system provides for multiple tag readers. The tag readers are active and have both transmit and receive capability. The system includes a gateway tag that receives information about individual items from the multiple readers and thus contains data on the entire inventory of items. This allows each of the multiple readers to conveniently access data for the entire inventory of items.
13 Citations
14 Claims
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1. Method for RFID tracking comprising:
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a) transmitting an RFID signal between a first RFID reader and a first group of passive RFID tags, b) receiving at the first RFID reader first data from the first group of passive RFID tags, c) transmitting said first data from the RFID reader to a gateway RFID tag, d) receiving and storing the first data at the gateway RFID tag, e) transmitting an RFID signal between a second RFID reader and a second group of passive RFID tags, f) receiving at the second RFID reader second data from the second group of passive RFID tags, g) transmitting said second data from the RFID reader to the gateway RFID tag, h) receiving and storing the second data at the gateway RFID tag, i) transmitting to the gateway RFID tag a query from the first RFID reader, j) receiving the query at the gateway RFID tag, k) transmitting second data from the gateway RFID tag to the first RFID reader. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. RFID tracking system comprising:
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a) a first group of passive RFID tags, b) a gateway RFID tag, c) a first RFID reader having; i) an RF transmitter for transmitting RF signals to the first group of passive RFID tags, ii) an RF receiver for receiving tag data from the first group of passive RFID tags, iii) an RF transmitter for transmitting tag data from the first group of RFID tags to the gateway RFID tag, and transmitting queries from the second RFID reader to the gateway RFID tag d) a second group of passive RFID tags, e) a second RFID reader having; i) an RF transmitter for transmitting RF signals to the second group of passive RFID tags, ii) an RF receiver for receiving tag data from the second group of passive RFID tags, iii) an RF transmitter for transmitting tag data from the second group of passive RFID tags to the gateway RFID tag, and transmitting queries from the second RFID reader to the gateway RFID tag, the gateway RFID tag having; i) an RF receiver for receiving tag data from the first and second RFID readers, and for receiving queries from the first and second RFID readers, ii) a memory for storing tag data from the first and second RFID readers, iii) an RF transmitter for transmitting to the first RFID reader, in response to a query from the first RFID reader, tag data received from the second RFID reader, and transmitting to the second RFID reader, in response to a query from the second RFID reader, tag data received from the first RFID reader. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification