System for maximum efficient transfer of modulated energy
US4741039A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1983 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Sep 26, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/62
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal processing system is disclosed for processing dynamically varying intelligence-carrying signals represented by different frequencies by transferring these signals within a pass band narrower than the range of the frequencies. The system, although not a compressor or compandor system, makes use of a compressor circuit for compressing only signals within a predefined pass band. Active filter circuits shape the compressed signals into a predetermined power envelope having fundamental frequency signal components and harmonically related constituents of the fundamental frequencies. Another compressor circuit is used for further compressing signal constituents of the power envelope. A negative feedback arrangement provides dynamic limiting of compression by the first compressor circuit as a function of increase of compression by the second compressor circuit. A combiner is used to recombine the harmonically related constituents delivered by the second compressor circuit, and thus retrieve the dynamically varying intelligence-carrying signals. Thus, the system involves a new method of signal processing involving first defining a range of original signal constituents to be process…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.