Patent ID: 6219029
Filing Date: 2001-04-17
Classification: G01R

Abstract:
A method for emphasizing infrequent events in variable intensity or variable color displays of waveform images, the method comprising the steps of:(a) producing variable intensity raster memory contents representative of the behavior of a plurality of successive instances of an electrical waveform's behavior, said behavior being predominantly repetitive but including instances of behavior that is at least partially variant, with the highest intensity values of said raster memory contents being at least partially associated with highly repetitive occurrences of identical waveform images, and with the lowest intensity values being at least partially associated with relatively rare occurrences of at least partially variant versions of the waveform image; and(b) in a normal mode of operation, providing the raster memory contents to a raster display system for presentation to a user as a variable intensity display, said raster display system having a memory subject to digital persistence control for decaying the intensity of each pixel; and(c) in an alternative mode of operation, complementing non-zero pixel intensity values to convert low intensity ones of said pixel values to high intensity values and to convert high intensity ones of said pixel values to low intensity values, and then providing the raster memory contents to a raster display system for presentation to a user as a variable intensity display, said raster display system having a memory subject to digital persistence control for decaying the intensity of each pixel.