Compandor with DC-coupled compressor
US5245299A · kind A · utility
4Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Jun 15, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G7/004
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A compandor circuit uses a DC-coupled compressor to reduce the required IC package size to 8-pins. A delta gain stage and rectifier in the feedback path of the compressor circuit receive the AC and DC components of the compressed analog output signal Features of the delta gain stage and rectifier eliminate the need for any AC-coupling capacitors in the feedback path thereby reducing the number of external components The remaining external components may be made smaller and manufactured as surface mount devices An expandor circuit receives a second compressed analog signal and expands it to full amplitude dynamic range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.