RF meter reading system
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United States of America Patent
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-
Sep 19, 1995
Grant Date -
N/A
app pub date -
Oct 22, 1993
filing date -
Oct 22, 1993
priority date (Note) -
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Abstract
The RF meter reading system includes a transmitter having an encoder. Meter data is encoded and modulated using a bi-phase modulating scheme. In order to uniquely identify the start of a data transmission, a super start field, which is an 'illegal' bi-phase signal is used. The super start field is selected such that it cannot be recognized if transmissions from more than one transmitter are being received by the receiver.
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