Patent ID: 6201527
Filing Date: 2001-03-13
Classification: G01R,G09G

Abstract:
A system for displaying waveforms representing respective signals, comprising:a signal acquisition circuit, coupled to an input signal source, for acquiring samples of an input signal;a circuit, coupled to the signal acquisition circuit, for selecting a subset of samples representing points of minimum and maximum excursion of said input signal and calculating the envelope of the acquired signal;a first memory for storing for display waveform data relating to said samples of said input signal;a second memory for storing for display data resulting from said calculation of said envelope; anda rasterizer, selectable coupled to said first memory and to said second memory, for generating an envelope and waveform representative signal within a single raster for simultaneously displaying waveforms representing the envelope and the acquired signal, said waveform representing said acquired signal having a greater number of samples than the number of minimum and maximum points of said envelope.