Autocalibration of compressed A/D converter
US4338589A · kind A · utility
16Cited by
0References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1979 |
| Grant date | Jul 6, 1982 |
| Priority date | — |
| Expiry date | Feb 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog-to-digital converter system is disclosed in which the amplitude of the signal is compressed by means including a logging means prior to an analog-to-digital converter. Reference signals of known values are applied to the logging means and their values at the output of the converter are used to determine a linearity factor which is applied to a multiplier coupled to the output of the converter. The amplitude of one of the reference signals at the output of the multiplier is compared with what it should be and the difference is added by an adder at the output of the multiplier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.