Electronic Device Authentication Through Multi-Tone Spectral Signatures
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Solution Overview
Problem
Conventional methods for authenticating electronic devices such as transistors, processors, and integrated circuits are costly, time-consuming, or destructive due to the difficulty in predicting the behavior of nonlinear electronic circuits outside normal operating conditions.
Innovation Solution
A Multi Tone Analysis (MTA) process that applies multiple voltage tones proximate identified frequencies to electronic devices, determining an electronic signature by measuring responses, and authenticating the device if the signature matches an authentic device's signature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional authentication methods are used on nonlinear electronic circuits, then authentication capability is achieved, but cost increases and time consumption increases
Solution Approach 1:
The patent changes the operating parameters by applying multi-tone signals at specific frequency points (including resonant frequencies) rather than conventional single-frequency or broad-spectrum signals. This parameter change enables differentiation of authentic versus counterfeit devices through their unique spectral response signatures, achieving reliable authentication without time-consuming conventional methods
Solution Approach 2:
The patent applies electrical vibration in the form of multi-tone signals to the electronic circuit under test. By analyzing the circuit's response to these vibrating signals at multiple frequencies, the system captures unique spectral signatures that identify authentic devices, thereby achieving fast and reliable authentication
2Reliability
If conventional authentication methods are used on nonlinear electronic circuits, then authentication capability is achieved, but cost increases
Solution Approach 1:
The patent changes the signal parameters by using multi-tone excitation at specific frequency points rather than conventional authentication signals. This approach reduces cost by enabling authentication through simple spectral analysis rather than expensive conventional methods, while maintaining reliable differentiation between authentic and counterfeit devices
Solution Approach 2:
The patent replaces complex conventional authentication systems with a simpler electrical measurement system that uses multi-tone signals and spectral analysis. This substitution reduces cost by eliminating the need for expensive equipment while maintaining authentication capability through unique spectral response identification
3Reliability
If conventional authentication methods are used on nonlinear electronic circuits, then authentication capability is achieved, but device destruction occurs
Solution Approach 1:
The patent applies partial action by using low-power multi-tone signals at specific frequency points rather than high-power conventional test signals. This approach is sufficient to elicit measurable spectral responses for authentication while avoiding excessive power that could damage or destroy the electronic circuit under test
Solution Approach 2:
The patent creates a spectral response signature (a form of electrical fingerprint) that copies the unique characteristics of authentic devices. By comparing this spectral copy against known authentic signatures, the system achieves reliable authentication without physical contact or destructive testing of the actual device
4Measurement precision
If multi tone analysis is applied to electronic devices, then authentication accuracy is improved, but measurement complexity increases
Solution Approach 1:
The patent segments the frequency spectrum into specific discrete frequency points for analysis, including fundamental frequencies and harmonic components. This segmentation simplifies the measurement process by focusing on key frequency regions rather than analyzing the entire spectrum, thereby improving authentication accuracy while managing measurement complexity
Solution Approach 2:
The patent introduces spectral analysis as an intermediary process that translates complex multi-tone circuit responses into simplified spectral signatures. This intermediary transformation makes the authentication process more manageable by converting difficult-to-interpret time-domain signals into clear frequency-domain characteristics for comparison
Data Source
AI summary
Methods and systems for authenticating electronic devices via multi tone analysis. A method for authenticating a device under test (DUT) of a type of DUT includes imparting voltage tones to the DUT. The voltage tones are proximate a frequency of interest that is associated with the type of DUT. Using a measurement response of the DUT to the voltage tones, an electronic signature of the DUT is determined. The DUT is determined to be authentic when the electronic signature of the DUT substantially matches an electronic signature of an authority DUT of the type of DUT.