The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2025
Filed:
Jun. 26, 2023
Nxp B.v., Eindhoven, NL;
NXP B.V., Eindhoven, NL;
Abstract
A method is provided for detecting tampering of a printed circuit board (PCB) using a tamper detection circuit implemented in an integrated circuit (IC) mounted on the PCB. In the method, a reference signal is generated and provided to a terminal of the IC. The terminal is connected to another circuit mounted on the PCB. A first response signal is received in response to the reference signal at the terminal. One or more characteristics of the first response signal are stored in a memory. The reference signal is again provided to the terminal of the integrated circuit and a second response signal is received at the terminal. The stored characteristics of the first response signal are compared to corresponding characteristics of the second response signal to generate a comparison result. The comparison result is used to detect tampering. When tampering is detected, an indication is provided.