Importance

Loading Importance Indicators...

Abstract

An analog to digital conversion circuit of a touch screen computing device includes a plurality of analog to digital converter circuits operable to convert a plurality of analog signals into a plurality of digital signals at an oversampling rate, a digital decimation filtering module operable to convert the plurality of digital signals into a plurality of digital filtered signals at a first output rate, a coefficient processor operable to generate real component coefficients and imaginary component coefficients of a filtering function at a plurality of frequencies, a first bandpass filter circuit operable to produce first affect values at known frequencies of the plurality of frequencies, and a second bandpass filter circuit operable to produce second affect values at selected frequencies of the plurality of frequencies.

Loading the Abstract Image...

First Claim