Very fast autoscale topology for digitizing oscilloscopes
US5155431A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A very fast autoscale feature can be implemented in a digitizing oscilloscope by using dedicated peak detector hardward [14] capable of operating at the maximum sampling rate of the A/D converter [12] to determine the minimum and maximum values of said input signal, in combination with a trigger counter [24, 26] to count the number of trigger events in the analog input signal. While in the autoscale mode, the oscilloscope microprocessor [22] can then set the appropriate scale and offset for the Y-axis of the display as a function of the maximum and minimum values determined by the peak detector [14] and set the sweep rate as a function of the count provided by the tripper counter [26].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.