Method and system for input voltage droop compensation in video/graphics front-ends
US7570181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2007 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Jun 10, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and systems for input voltage droop compensation in video/graphics front-end systems. The method of an embodiment of the invention captures input voltage information supplied to an Analog-to-Digital Converter (ADC) operatively coupled to a bypass capacitor in a video/graphics front-end system; calculates a droop in the input voltage in ADC due to a charge sharing between an input sampling capacitor of the ADC and the bypass capacitor; and compensates for the value of the bypass capacitor using an output of the ADC. Embodiments of the invention provide an improved freedom in the choice of off-chip bypass capacitance in video/graphics front-end systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.