Method and apparatus for selecting and displaying a high resolut

Details Method and apparatus for selecting and displaying a high resolut Method and apparatus for selecting and displaying a high resolut

1989-05-01

1990-12-04

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Cathode ray

340728, 364487, G01R 1320, H01J 2970

Patent

active

049756362

ABSTRACT:
A windowed portion of a displayed waveform under test, typically from an oscilloscope display, is simultaneously displayed at a higher resolution by using a software program in conjunction with the existing timebase circuit rather than using a second timebase circuit. The software uses the resolution of the interpolators (a stretcher circuit which uses capacitors to hold acquire a charge and measure the amount of time necessary to slowly discharge the circuit) to carry through all the plotting of points to a first and second display.

REFERENCES:
patent: 4072851 (1978-02-01), Rose
patent: 4555765 (1985-11-01), Crooke et al.
patent: 4593242 (1986-06-01), Bristol et al.
patent: 4704691 (1987-11-01), Blair

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