Radio Frequency Identification (RFID) tag location verification using image data
US12175851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2022 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Apr 22, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/64
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Electronic Article Surveillance in which a radio frequency identification (RFID) interrogation signal is transmitted, over a first window of time, into an RFID interrogation zone of the EAS system. A plurality of response signals are detected from a first RFID tag of the EAS system responding to the interrogation signal. Over a second window of time overlapping at least in part with the first window of time, image data is captured within a field of view. The field of view and the RFID interrogation zone overlap to form a zone of interest. Movement of a non-tag object is characterized during the first window of time based on the image data. Whether the first RFID tag is associated with the characterized non-tag object is determined based on a comparison of the detected plurality of response signals and the characterized movement of the non-tag object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.