Face-to-face state determination system
US11852710B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2019 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a face-to-face situation determination system in which a first beacon, which is a beacon carried by a first user, transmits a first signal including information identifying the first beacon. A second beacon, which is a beacon carried by a second user, upon receiving the first signal from the first beacon, transmits, toward a control device, a second signal including information identifying the first beacon, a first signal reception intensity, and information identifying the second beacon. The control device receives the second signal and, on the basis of the first signal reception strength included in the second signal, determines that the first user and the second user are facing each other if the first signal reception strength is greater than or equal to a first threshold value for a predetermined period or longer, and determines that the first user and the second user are facing one direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.