Data carrier identification system
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United States of America Patent
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Jun 1, 1993
Grant Date -
N/A
app pub date -
Dec 16, 1988
filing date -
Dec 17, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention is directed to a data carrier identification system which is used, for example, in production lines. Different data carrier identification numbers (DCNos.) are assigned to respective different data carriers in an access enable area where data carriers can communicate with a central controller. The different DCNos. allow the controller to correctly access a specific data carrier even if more than one data carrier exists in an access enable area. When a new data carrier enters the access enable area its data carrier identification number is checked by the controller to determine if another data carrier already in the area has the same data carrier identification number and, if so, the controller instructs one or more of the data carriers to change their data carrier identification number so that no two data carriers within the access area have the same data carrier identification number.
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