Delta sigma to PCM converter
US4243977A · kind A · utility
4Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jan 31, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/502
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A converter for converting a delta sigma modulated signal into a pulse code modulated signal comprises an n bit counter, an (n-1) true/complement, zero one element which is controlled by the most significant bit of the counter and operates on (n-1) bits of the counter in accordance with the pulse density modulation input to produce weighted output samples. An m bit accumulator accumulates the weighted samples to produce pulse code modulated samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.