Method for verifying the display of a content item by a digital display device, and digital display system
US11336460B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2019 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Aug 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method for verifying a content item displayed by a digital display device comprising a central unit and a digital screen controlled by the central unit. A signature is calculated automatically based on snapshots of the content item that are captured at the display device, and this signature is transmitted to a remote server that compares this signature with a similar signature calculated based on a scheduled content item expected to be displayed on the digital screen and, if the signature of the displayed content item corresponds to the signature of the scheduled content item, a token authenticating the displayed content item is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.