Device for equalizing channel-distorted signals
US6047024A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Aug 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03477
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An equalization device has a digital equalizer for joint tuning of a data-carrying signal distorted by analog transmission. The digital equalizer includes a closed-loop automatic gain control (AGC) circuit for applying a compensatory frequency-independent gain to the distorted signal followed by a frequency filter for applying a compensatory frequency-dependent gain to the signal. Joint tuning produces an output signal which more closely resembles the originally transmitted signal, facilitating recovery of implicit clock and more reliable data recovery. The digital equalizer may be advantageously stage-implemented as a preliminary digital equalizer which is preceded by an analog equalizer and followed by a final digital equalizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.