Resonant system excitation power reduction using dynamic phase offset
US9612433B2 · kind B2 · utility
5Cited by
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14Claims
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Key dates
| Filing date | May 21, 2015 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | May 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3194
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drive circuit for a resonant system provides an excitation signal having an amplitude and a phase. The resonant system provides a feedback signal representing an oscillation amplitude. The amplitude of the excitation signal is reduced for a substantially constant feedback signal amplitude by modifying the excitation signal phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.