Adaptive signal weighting system
US4136314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Oct 31, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G9/025
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adaptive signal weighting system for use in electrical signal transmission along a signal path comprises a variable filter disposed in the signal path having electrical transmission characteristics capable of varying in response to a first control signal the relationship between the spectral region of dominant energy in a transmitted signal relative to the other spectral regions of the transmitted signal. Frequency discrimination means senses the spectral region of dominant signal energy in the transmitted signal and provides the first control signal as a function of frequency of the dominant signal energy. Gain control means disposed in the signal path and coupled in series with the filter means provides a gain variable on the transmitted signal responsively to a second control signal. This second control signal is logarithmically related to the amplitude of the transmitted signal over at least a portion of the frequency range of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.