Device for displaying analog signals on a raster scanning displa

Details Device for displaying analog signals on a raster scanning displa Device for displaying analog signals on a raster scanning displa

1975-01-22

1977-01-18

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

178DIG4, 325363, G01R 2700

Patent

active

040042189

ABSTRACT:
Television or other raster display system for displaying the waveform of a time-varying input signal. The scanlines of the raster scan-line pattern are traced on the display screen in a direction orthogonal to the direction of movement of the waveform. The waveform image is constructed on the display screen by superimposing a dot on each raster scanline. These dots are developed by comparing the instantaneous value of the time varying input signal with the instantaneous value of a ramp signal which is synchronized with the raster scanlines.

REFERENCES:
patent: 2293135 (1942-08-01), Hallmark
patent: 2714657 (1955-08-01), Stein
patent: 3622889 (1971-11-01), Ridolfi
patent: 3659044 (1972-04-01), Olson

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