Electronic measuring apparatus
Abstract
Abstract A CIRCUIT WHEREIN AN ANALOG-TO-DIGITAL CONVERTER IS FED BY AN AMPLIFIER COUPLED TO A MULTIPLEXER RECEIVING MEASURED MAGNITUDES FROM A NUMBER OF TRACKS, SAID AMPLIFIER BEING PROVIDED WITH A NUMERICAL GAIN CONTROL AND BEING ASSOCIATED WITH A MEMORY SUPPLYING, FOR EACH TRACK ONCE DURING EACH SUCCESSIVE CYCLE, THE DESIRED CORRECTED GAIN TO BE ASSUMED BY THE AMPLIFIER FOR THE SAMPLE OF THE MEASUREMENT FED BY THE MULTIPLEXER OUT OF THE CORRESPONDING TRACK. THIS ARRANGEMENT ALLOWS IN PARTICULAR MEASURING AND RECORDING IN QUICK SUCCESSION THE VOLTAGES RECEIVED BY A LARGE NUMBER OF MEASURING DEVICES, FOR INSTANCE FOR SEISMIC PROSPECTING PURPOSES, TO PROVIDE SIGNALS WHICH IT IS ESSENTIAL TO AMPLIFY AND WHICH ARE TO BE MEASURED WITHOUT SATURATION, EVEN IN THE CASE OF HIGHLY DYNAMIC SIGNALS, THE OPERATION BEING PERFORMED IN THE VICINITY OF THE MAXIMUM CAPACITY OF THE COMPUTER SO AS TO INCREASE ITS ACCURACY.
Inventors
- 👤 Christian Georges Joly
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |