Telecommunications – Transmitter and receiver at separate stations – Short range rf communication
Reexamination Certificate
2007-10-23
2007-10-23
Urban, Edward F. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Short range rf communication
C455S572000, C340S005910, C340S693300
Reexamination Certificate
active
10270936
ABSTRACT:
An electronic shelf label with a modulated backscatter communication system which can actively transmit signals. The electronic shelf label includes a modulated backscatter receiver for receiving a first modulated radio frequency (RF) carrier signal, and a transmitter powered by the first modulated RF carrier signal for transmitting a second modulated RF carrier signal.
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Claessen Albertus M. G.
Dalton Gary C.
Kwan Sik Piu
Scheb Jeffrey E.
Haroon Adeel
Martin Paul W.
NCR Corporation
Urban Edward F.
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