Patent ID: 9069428
Filing Date: 2015-06-30
Classification: B60K,G06F

Abstract:
1. A method for operating a capacitive, matrix touch screen, for use in a motor vehicle, wherein touching the matrix touch screen in the region of a matrix element prompts a signal level associated with the matrix element to be produced, the method comprising: modifying the signal level associated with the matrix element which is produced when the matrix touch screen is touched in the region of the matrix element such that the signal level is increased when this signal level exceeds an upper signal level limit value; is decreased when this signal level is below a lower signal level limit value; is scaled when this signal level is below the upper signal level limit but exceeds the lower signal level limit value, wherein the modified signal levels of two adjacent matrix elements are taken as a basis for determining whether the two matrix elements have been touched as part of a joint two-dimensional touch of the matrix touch screen.