Method and apparatus for comparing incoming data with registered data
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United States of America Patent
Stats
-
May 8, 2001
Grant Date -
N/A
app pub date -
Mar 22, 1999
filing date -
Apr 8, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data comparison apparatus includes a cross-correlation table storing unit for storing degrees of match calculated for all possible combinations of two registered data, as a cross-correlation table, a comparison processing unit for comparing a currently-read registered data with an incoming data to be compared to calculate the degree of match between them, a comparison determination unit for comparing the calculated degree of match with a threshold value to determine whether there is a match between the currently-read registered data and the incoming data, and for forcedly finishing a further comparison process for remaining registered data if there is a match between the currently-read registered data and the incoming data, and a registered-data reading control unit for determining one registered data that is to be read next out of the registered-data storing unit, using the calculated degree of match and the cross-correlation table.
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