Method and system for input voltage droop compensation in...

Details Method and system for input voltage droop compensation in... Method and system for input voltage droop compensation in...

2007-06-10

2009-08-04

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Converter compensation

Reexamination Certificate

active

07570181

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.

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