Temperature-based tamper detection
US12146801B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2021 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Aug 24, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A temperature sensing device for a temperature-based tamper detection system includes an integrated circuit (IC) and a logic circuit. The logic circuit sends an enable signal to the IC, causing it to measure the device temperature, and initiates a security timer. In response to not receiving the device temperature before the security timer expires, the logic circuit outputs a tamper event signal and an error code. The logic circuit can disable the enable signal in response to not receiving the device temperature before the timer expires. In some implementations, the logic circuit is a first logic circuit, and the IC includes an analog integrated circuit (AIC) and a second logic circuit. The second logic circuit receives the enable signal from the first logic circuit, causes the AIC to measure the device temperature, and outputs a ready signal and the device temperature to the first logic circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.