Acoustic Timepiece Authentication via Vibration Analysis
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Solution Overview
Problem
The watch industry faces significant challenges in authenticating timepieces due to the increasing quality and prevalence of counterfeit watches, which are difficult to distinguish without modifying the appearance or opening the device, potentially damaging it and invalidating warranties.
Innovation Solution
A method that measures and analyzes acoustic vibrations emitted by timepieces to generate an electrical signal, extracting magnitude, time, and frequency information, which is compared to reference data to determine authenticity without invasive procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If marking methods (engraving, material marking, code marking) are used to authenticate timepieces, then authentication reliability is improved, but the appearance and nature of the object are modified which is unacceptable in the luxury watch industry
Solution Approach 1:
The patent replaces mechanical/invasive marking methods with acoustic measurement and analysis. Instead of physically marking or opening the timepiece, the system uses acoustic sensors to capture and analyze vibration signals emitted by the movement, transforming the authentication approach from mechanical modification to non-contact acoustic field analysis.
Solution Approach 2:
The patent introduces acoustic vibrations as an intermediary medium for authentication. The acoustic sensor captures vibration signals that serve as a mediator between the timepiece's internal movement and the authentication system, allowing verification without direct physical intervention or modification of the timepiece itself.
2Measurement precision
If the timepiece is opened to check internal components, then authentication accuracy is improved, but the performance and integrity of the piece are impacted and warranty is invalidated
Solution Approach 1:
The patent replaces the mechanical act of opening the case with acoustic sensing. The acoustic sensor detects vibrations transmitted through the case and movement, enabling internal component verification without physical disassembly, thus preserving water tightness and warranty validity while maintaining authentication accuracy.
Solution Approach 2:
The timepiece's own movement generates the acoustic vibrations used for authentication. The movement's natural operation during normal timekeeping produces the acoustic signals that contain authentication information, eliminating the need for external intervention or special testing procedures that would require opening the device.
3Ease of manufacture
If counterfeiters use cheap movements, then counterfeit production cost is reduced, but the acoustic signature becomes distinguishable from authentic movements
Solution Approach 1:
The acoustic vibration signal serves as an intermediary that reveals the true nature of the movement. Even though counterfeiters can easily obtain cheap movements, the acoustic signature captured by the sensor acts as a mediator that exposes the differences in quality, materials, and construction between authentic and counterfeit movements, making authentication reliable despite the ease of counterfeit production.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This non-invasive authentication method effectively differentiates authentic from counterfeit timepieces by analyzing unique acoustic signatures, providing a reliable means to verify authenticity without damaging the watch, thus maintaining its integrity and warranty validity.
Implementation Method 1
measuring acoustic vibrations emitted by said timepiece to obtain an electrical signal, said electrical signal indicating a variation of a magnitude of said measured acoustic vibrations as a function of time
Data Source
AI summary
A method for authenticating a timepiece including measuring acoustic vibrations emitted by said timepiece to obtain an electrical signal, said electrical signal indicating a variation of a magnitude of said measured acoustic vibrations as a function of time, wherein said electrical signal comprises a plurality of acoustic events associated with mechanical shocks taking place in said timepiece, extracting from said electrical signal or from a representation of said electrical signal in a time, frequency or time-frequency domain at least one of a magnitude information on a magnitude of one of said plurality of acoustic events, time information on said one of said plurality of acoustic events, and a frequency information on a frequency of said one of said plurality of acoustic events, comparing said extracted information with at least one of a reference information, and deriving information on an authenticity of said timepiece based on the comparing.