| 摘要 |
<p>A sensor system for protecting products and technology from reverse engineering by detecting attempts to probe electronic circuitry includes a sensor electrically linked to electronic circuitry. The sensor detects interaction of probe devices with the electronic circuitry for the purpose of reverse engineering the electronic circuitry. The sensor includes an exciter and an impedance counter linked to the exciter. A count rate of the impedance counter is a function of the impedance of the electronic circuitry based on oscillation frequency generated by the exciter. The sensor also includes an impedance register storing binary count value from the impedance counter, referred to as impedance data. A reference oscillator monitoring count rate of the impedance counter and a sensor evaluation system compare impedance value to threshold values which are indicative of abnormal behavior and may be indicative of tampering relating to the evaluation of the electronic circuit for the purpose of reverse engineering</p> |
