Delta modulation encoding/decoding circuitry
US4811019A · kind A · utility
12Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1986 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | May 30, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/022
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An adaptive delta modulation circuit having an analog adaptation circuit and an integrator circuit. The adaptation circuit exponentially converts a voltage which is proportional to the average of a time duration of an overload control signal to an adaptation current which is averaged and converted to an adaptation voltage. An integrator circuit includes a sole switch which shorts to ground a circuit point for generating an analog signal formed of line segments; each segment has a slope magnitude controllable by the adaptation voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.