Electronic anti-tamper device
US12067156B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2019 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Dec 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10121
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.