RFID-based item presence detection
US9959494B1 · kind B1 · utility
14Cited by
0References
20Claims
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Assignee
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Key dates
| Filing date | Apr 20, 2016 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Jun 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q10/087
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
An RFID-based item tracking system may use statistical methods to determine whether a tag or tagged item that does not respond when inventoried is present in a particular zone or reader antenna field-of-view. In one embodiment, the item tracking system may determine an observability of an item based on one or more initial trials. Upon not detecting the item in one or more subsequent trials, the item tracking system may estimate whether the item is still present based on the observability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.