Patent ID: 6901355
Filing Date: 2005-05-31
Classification: B60T,F02D,G01D

Abstract:
1. A method for correcting non-linearities of an electrical output signal of an electrical component with the aid of a characteristics map that is defined by discrete interpolation points and stored in a characteristics-map memory, comprising: performing an A/D conversion of at least one analog signal influencing the non-linearities of the electrical output signal; over-sampling the at least one analog signal; shifting a quantization noise in the at least one analog signal out of a signal-frequency range toward higher frequencies, wherein the A/D conversion, over-sampling, and shifting is performed by a delta-sigma modulator; addressing the characteristics-map memory storing the characteristics map using an output signal of the delta-sigma modulator; ascertaining the interpolation points of the characteristics map that are adjacent as a function of the at least one analog signal which is used to address the characteristics map; and performing an interpolation between the ascertained adjacent interpolation points using a noise in the at least one analog signal based on the quantization noise to ascertain an output signal of the characteristics map.