Patent ID: 7277802

Claim:
A method for providing a linear signal from mass flow transducers, comprising: obtaining a non-linear raw signal from a mass flow transducer; approximating a non-linear error from said non-linear raw signal; subtracting from said non-linear raw signal, an approximated error; and obtaining a linear signal from said subtracted result in order to linearize a raw output from said mass flow transducer; and associating said mass flow transducer with an Application Specific Integrated Circuit (ASIC), said ASIC comprising a memory for storing a plurality of memory storing coefficients, wherein said plurality of memory storing coefficients describes an error realized during a calibration of mass flow; an amplifier; an approximation mechanism for performing an approximation calculation, wherein said approximation receives said plurality of memory storing coefficients from said memory and an output signal from said amplifier and wherein said approximation mechanism approximates said non-linear error from said non-linear raw signal; a circuit for generating said discrete sine functions, wherein said circuit provides said discrete sine function to said approximation mechanism; and a subtractor that receives an output signal from said amplifier and an output signal from said approximation mechanism, wherein said subtractor subtracts said approximated error from said non-linear signal to produce said subtracted result.