FREQUENCY SHIFT COMPENSATION, SUCH AS FOR USE IN A WIRELESS METER READING ENVIRONMENT
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United States of America Patent
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Issued Date -
Jul 25, 2013
app pub date -
Mar 11, 2013
filing date -
Mar 30, 2004
priority date (Note) -
Abandoned
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Abstract
Methods and apparatus for computing the carrier frequency of a transmitter using frequency modulated digital data to compensate for frequency shifting of the transmitter and the receiver local oscillators and for bandwidth adjustment of the receiver's filter. In particular, methods and apparatus are disclosed for binary systems transmitting “1” and “0” data using decoded or undecoded received signals.
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