RFID tag and communication protocol for long range tag...

Details RFID tag and communication protocol for long range tag... RFID tag and communication protocol for long range tag...

2006-05-16

2006-05-16

Lee, Michael G. (Department: 2876)

Registers

Records

Conductive

C235S451000

Reexamination Certificate

active

07044387

ABSTRACT:
An RFID tag has a frequency agile RF transceiver that transmits data from the RFID tag to a reader and a direct sequence spread spectrum RF receiver that receives communications from the reader. Messages between the reader and the RFID tag are divided into frames, and each frame contains a frame header transmitted by the reader and at least one time slot containing data transmitted by the RFID tag. The frame header contains a hop sequence and a frequency in a hop sequence to be used by the RFID tag in transmitting data to the reader.

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