MODULATION SCHEME FOR DRIVING A PIEZO ELEMENT
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United States of America Patent
Stats
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N/A
Issued Date -
Sep 25, 2014
app pub date -
Nov 7, 2012
filing date -
Nov 8, 2011
priority date (Note) -
Published
status (Latency Note)
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US Family Size
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Non-US Coverage
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Abstract
The present disclosure is directed to a modulation scheme for driving a piezo element. In one embodiment, a device may comprise, for example, a piezo element, voltage rails and bridge circuitry. The bridge circuitry may be coupled between the piezo element and the voltage rails. The bridge circuitry may include at least signal sources configured to generate drive signals that cause the piezo element to generate mechanical movement while being coupled to at least one of the voltage rails. In the same or a different embodiment the bridge circuitry may further include comparators, the output of the comparators being usable to determine the resonant frequency of the piezo element. The operating frequency of the bridge circuitry may be configured based on the resonant frequency of the piezo element.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| WO | A2 | WO2013070658 | Nov 07, 2012 |
International Classification(s)
- 2012 Application Filing Year
- H01L Class
- 20465 Applications Filed
- 18077 Patents Issued To-Date
- 88.34 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 12 Citation Count
- H01L Class
- 62.17 % this patent is cited more than
- 11 Age