Apparatus and method for controlling a device
US10333443B2 · kind B2 · utility
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3References
18Claims
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Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Jun 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for adjusting an amplitude of a drive signal applied to a device are presented. The method of driving a device includes providing a drive signal to drive the device, monitoring a gradient value of the response signal; and changing an amplitude level of the drive signal based on the gradient value. The monitoring of the gradient value includes sensing an electrical parameter of the response signal and calculating the gradient value based on the electrical parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.