Method and apparatus for locating a device using a database containing hybrid location data
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 15, 2002
Grant Date -
N/A
app pub date -
Jul 31, 2000
filing date -
Jul 31, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A locating system includes a receiver for receiving a signal, having parameters, from a source. This locating system includes a database, which includes receiver records. Each receiver record includes (a) a source field, (b) a signal parameter field, (c) a receiver location computed using at least the source field and the signal parameter field. The receiver location computation has an accuracy. The database is indexed by the source field and the signal parameter field. The system includes a processor, which is configured to access the database using the source and signal parameters to find a coarse receiver record including a link to a fine receiver record. The fine receiver record has a better receiver location computation accuracy than the coarse receiver record.
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