Adaptive line equalizer
US5764695A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03885
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An adaptive equalizer capable of providing compensation for a wide range of cables having different cable characteristics and different cable lengths. The adaptive equalizer comprises a programmable gain amplifier capable of providing a variable amplification factor in response to a feedback control signal. The gain amplifier is configured to receive pulse signals transmitted over a communication channel. A peak detecting equalizer is coupled to the gain amplifier so as to receive its output signals. A pulse shape detector is adapted to receive pulse signals provided by the peak detecting equalizer, and generate a first indication signal indicating over-equalization and a second indication signal indicating under-equalization. A gain control circuit receives the first and second indication signals to provide the feedback control signal to the programmable gain amplifier so as to vary its amplification factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.