Propagation of data throughout an area using distributed...

Details Propagation of data throughout an area using distributed... Propagation of data throughout an area using distributed...

2006-12-27

2009-12-15

Trinh, Tan (Department: 2618)

Telecommunications

Wireless distribution system

Two-way

C455S414100, C455S099000, C455S041100, C455S041200, C340S010100, C340S572100, C340S572800

Reexamination Certificate

active

07634226

ABSTRACT:
A method is provided for propagating data among multiple locations in an area. The method includes using a plurality of transponders distributed throughout the area, each able to receive, store, and transmit data. The method further includes using scanners moving relative to the transponders, and able to transfer data to and from these transponders over a wide or limited range. When a scanner encounters a transponder (becomes close enough for data communication), it reads data from the transponder and writes data to the transponder, including data read from prior encounters with other transponders. Data written to a transponder by a scanner may include data associated with that scanner, including but not limited to one or more of identification, speed, direction, and time stamp. The method thus propagates data among transponders and makes this transponder data available to scanners as they encounter these transponders. The method propagates data throughout an area without a requirement for a wired or wireless connection between and among the transponders, at a speed dependent on the number of and speed of scanners moving within the area. The method further includes optionally connecting a subset of transponders with a wired or wireless network to more quickly propagate data over the area, while still not requiring every transponder be connected to this network. The method further includes using RFID tags, both adapted and non-adapted to the specific application, as the transponders, and RFID scanners to write to and read from these RFID tags.

REFERENCES:
patent: 7272502 (2007-09-01), Lee et al.
patent: 2007/0035396 (2007-02-01), Chand et al.
patent: 2007/0080783 (2007-04-01), Ghosh et al.
patent: 2007/0102506 (2007-05-01), Stevens
patent: 2008/0079540 (2008-04-01), Aull et al.
patent: 2008/0252424 (2008-10-01), Maltseff et al.

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