Adaptive equalizer circuit including multiple equalizer units
US5670916A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1995 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Oct 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An equalizer circuit for equalizing waveform distortion of a signal that propagates through a lossy transmission cable connected between a receiver and a transmitter, the equalizer circuit including a plurality of equalizer units which are connected in series with one another and a plurality of taps, each tap providing a different equalized representation of a signal being transmitted through the transmission cable to which the equalizer circuit is connected, and a control circuit for determining the tap at which appears an equalized signal that exhibits minimum error relative to the transmitted signal, the determination being made by applying an envelope detector to each tap for obtaining low frequency envelope signals for the signal appearing at each tap and for comparing the low frequency envelope signals thus obtained with a common DC reference signal that is related to the ideal transmitted signal amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.