Anti-tamper protection circuit
US11847255B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2022 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Oct 26, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is an anti-tamper protection circuit including a switch trigger port, a tamper signal transmission port, a power supply unit, and a signal output port. The switch trigger port is connected to a switch, the signal output port is connected to a digital movie server, and the tamper signal transmission port is configured to transmit a tamper signal transmitted to the signal output port through the tamper signal transmission port. In the present disclosure, when an LED display screen is powered off, a battery inside the digital cinema server would continue to power the digital cinema server to maintain proper functioning of the digital cinema server, the power supply unit also powers the anti-tamper protection circuit to guarantee anti-tamper operation of the anti-tamper protection circuit, thereby enabling continuous protection of information security and maintenance of digital copyright, and such that the requirements of information handling standards are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.