Process for the analog/digital conversion of an electric signal and device for implementing it
US5831568A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Jan 6, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A process for the analog/digital conversion of an electric signal as well as a device for implementing the process is described. The process according to the invention provides that the time (T.sub.H, T.sub.L) be determined, which, starting from a voltage (U.sub.X) to be converted is necessary to charge up a RC component (10, 12) to a predetermined reference voltage, for example a switching threshold (S.sub.H, S.sub.L) of a comparator (14) or to discharge it. The device according to the invention provides that a selector switch (13), the comparator (14) as well as a time detector (15) are components of a microprocessor (17), which is wired with the RC component (10, 12) as well as with an input resistor (11) if necessary. The process according to the invention as well as the device according to the invention are particularly easy to realize and are suitable for use especially with a microprocessor (17) which does not have an integrated analog/digital converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.