Analog recording and integration of electric signals
US4926057A · kind A · utility
Inventors
Key dates
| Filing date | Jan 13, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Jan 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R13/342
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device comprises a high speed oscilloscope on the screen of which is formed by scanning a light path representative of the amplitude variation as a function of the time of the signal to be processed. Each point of such path is transformed by an astigmatic optical system into a light segment of constant length projected with off-set on a strip of photodiodes so that each sensor element of the strip receives a light band of a heigth proportional to the ordinate of the corresponding point of the path. An electronic circuit reads the strip after a predetermined number of passages of the signal. The result is displayed on an oscilloscope and stored in a memory after analog-digital conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.