Multi-stage data filtering system employing multiple filtering criteria
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United States of America Patent
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Dec 11, 2001
Grant Date -
N/A
app pub date -
Dec 4, 1997
filing date -
Dec 4, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data filtering system is provided that filters data in multiple stages. The system provides a first filter criteria to a first device. The first device uses the first filter criteria to generate a first set of filtered data. The system receives the first set of filtered data from the first device and filters the received data based on a second filter criteria, which is different from the first filter criteria. The filtering of the first set of filtered data generates a second set of filtered data. The first filter criteria and the second filter criteria can be included in a profile data set. The profile data set may be associated with a particular data recipient. The first filter criteria contains public profile data and the second filter criteria contains private profile data. The profile data set may contain data elements associated with a particular class of data recipients or a particular data recipient role. The data filtering system can be implemented such that the first device is an untrusted filtering device and the second device is a trusted filtering device.
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