Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Reexamination Certificate
2006-02-21
2006-02-21
Noland, Thomas P. (Department: 2856)
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
C345S173000, C310S31300R
Reexamination Certificate
active
07000474
ABSTRACT:
An acoustic-based system, such as a touchscreen system, is provided. The system comprises an acoustic substrate and an acoustic transducer operably coupled to the substrate. The transducer exhibits a higher order odd resonant frequency that is equal to the operating frequency of the system. As a result of using the higher resonant frequency that is substantially equal to the operating frequency, the thickness of the transducer can be increased, and thus made more durable.
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ELO Touchsystems, Inc.
Noland Thomas P.
Saint-Surin Jacques M.
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