Patent ID: 6249115
Filing Date: 2001-06-19
Classification: G01R

Abstract:
A method of operating a raster scan digital signal acquisition and waveform display instrument in which a dot representing a signal event is displayed with a color parameter in accordance with the value of a corresponding data word stored in a raster scan memory, the method comprising:receiving a single color parameter control value from a user interface control element and generating multiple independent control values for influencing the values of the data words stored in the raster scan memory in response to said single color parameter control value;wherein the instrument has a rasterizer for increasing the value of the data word corresponding to an event by an amount returned by a first function on each occurrence of the event, and a decay machine for decreasing the values of all non-zero data words in the raster scan memory by an amount returned by a second function per unit time, and the method comprises supplying the single color parameter control value as inputs to both the first function and the second function.