Method and apparatus for analog-to-digital conversion
US5075678A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1991 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Feb 28, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/201
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for analog-to-digital conversion includes the steps of applying a first transfer function to the input signal and amplifying the input signal by a defined gain factor to obtain an edited signal, subject chronologically successive samples of both the input signal and the edited signal to analog-to-digital conversion and thereby obtaining digital data having a defined number of bits corresponding to the input signal and digital data having a defined number of bits corresponding to the edited signal, multiplying the digital data corresponding to the input signal by a defined factor equal to the gain factor, applying a second transfer function to the digital data corresponding to the input signal by digital filtering, and undertaking calculations on the signals obtained in this manner to obtain a final analog-to-digital conversion result. An apparatus operating according to this method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.