Analog to digital conversion with enhanced precision
US9807334B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2017 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Apr 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for conversion of an analog signal into a digital signal includes a clock signal generator and a ramp generator configured for delivering a rising voltage ramp. A comparator is configured for comparing the value of the analog signal and the value of the voltage ramp and for generating a comparison signal taking a first logical value when the two values are equal. A signal generator is configured for generating a counter signal equal to the inverse of the clock signal if the comparison signal takes its first value while the clock signal is in the high state, or a counter signal equal to the clock signal if the clock signal is in the low state. A counter is configured for counting the number of edges of the counter signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.