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US 9,772,607 B2Granted
Method and system for authenticating a device
AssigneeSicpa Holding SA
InventorsEric Decoux, Andrea Callegari
Life of this patent
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AssigneeSicpa Holding SA
InventorsEric Decoux, Andrea Callegari
Estimating the term…
Method for authenticating a timepiece comprising measuring acoustic vibrations emitted by said timepiece to obtain an electrical signal indicating magnitude information comprising a variation of a magnitude of the measured acoustic vibrations as a function of time. The electrical signal comprises at least one specific tone associated with the presence of a quartz resonator in the timepiece. Method further comprises performing transform of electrical signal into frequency domain to obtain frequency-domain power spectrum indicating variation of power of electrical signal as function of frequency, processing the frequency-domain power spectrum so as to reveal at least one narrow peak in frequency-domain power spectrum corresponding to the at least one specific tone, and extracting at least one resonance frequency corresponding to said at least one narrow peak. Method further comprises comparing extracted at least one resonance frequency with at least one reference resonance frequency; and determining an authenticity of said timepiece.
A method of authenticating a timepiece, wherein the timepiece comprises a quartz resonator for emitting a vibration, the method comprising:
A computer-implemented method of authenticating a timepiece which comprises a quartz resonator for emitting a vibration at a resonant frequency, wherein the method comprises:
A method of creating a reference information for authenticating a timepiece which comprises a quartz resonator, comprising detecting vibrations of said timepiece resulting from the vibration of the quartz resonator, and storing at least one characteristic of the detected vibrations to create the reference information for authenticating the timepiece, and preferably wherein the at least one characteristic comprises one or more of a resonant frequency, a period of the detected vibrations, one or more component frequencies of the detected vibrations, a magnitude of the detected vibrations, a temporal variation of the period of the detected vibrations, a temporal variation of the frequency of the detected vibrations, and a temporal variation of the magnitude of the detected vibrations.
Dependencies are inferred from the claim text.