Driver for liquid-filled lens generating high-voltage drive signal
US7619830B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2004 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Jun 15, 2025 |
Classification
- Technology area (CPC —)General
Abstract
A liquid-filled lens driver is disclosed. The liquid-filled lens includes an input/output interface unit, a system clock generation unit, a high voltage generation unit, a reference/bias voltage generation unit, a drive signal generation unit and a control unit. The input/output interface unit exchanges the lens driver control signal and the status information of the liquid-filled lens with the image signal processor. The high voltage generation unit generates high voltage using low voltage of a battery of a mobile information terminal. The voltage generation unit provides reference voltage and bias voltage for operating the liquid-filled lens driver. The drive signal generation unit generates a final drive signal for the liquid-filled lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.