Transaction accounting of toll transactions in transponder systems
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United States of America Patent
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Apr 20, 2004
Issued Date -
N/A
app pub date -
Oct 11, 2000
filing date -
Apr 10, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention allows a toll authority to monitor transaction numbers which are sent from a transponder (14) to an interrogator (12). By incrementing the transaction counter stored in the transponder with successful transactions the toll authority can ascertain whether accounting of a transaction has been missed (i.e., a transaction number missing from the sequence), or double-counted (i.e., two transactions with the same transaction number).
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