Signal waveform display system

Abstract

A signal waveform display system for displaying waveforms of one or two input signals on a display screen is provided which comprises first-third input switching circuits, first and second trigger generators, first and second horizontal sweep generators, and a composite horizontal sweet generator. The trigger generators respectively generates first and second trigger pulses synchronously with the input signals provided thereto through the first and second input switching circuits. The sweep generators are triggered by the trigger pulses and generate first and second sweep signals having variable time periods, respectively. The composite sweep generator generates a composite sweep signal including lower portions of the first sweep signal which are smaller than a reference voltage, and upper portions of the second sweep signal which are higher than the reference voltage. The input signals are selectively provided to a vertical axis driving circuit, and the composite sweep signal is provided to a horizontal axis driving circuit, thereby the waveforms on different time scales can be laterally displayed on the screen.

Dependencies are inferred from the claim text.