System and method for LCD loop control
US9058761B2 · kind B2 · utility
2Cited by
22References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Aug 19, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An LCD controller includes a charge pump for generating a charge voltage responsive to an external voltage and a clock signal. The controller further includes an oscillator for generating the clock signal responsive to an oscillator control signal. An LCD driver voltage circuit generates a plurality of LCD driver voltages for driving segments of an associated LCD display. A loop control circuit within the LCD controller monitors an LCD driver voltage from the LCD driver voltage circuit and generates the oscillator control signal responsive thereto to enable and disable the oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.