Implementation method for adaptive equalizer in CMOS
US6438162B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1998 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Nov 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03878
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for restoring digital pulses within a data transmission system which have degraded due to the attenuation and distortion inherent in a data transmission medium. The apparatus comprises an adaptive equalizer which receives signals from the data transmission medium, while the method by which the digital pulses are restored comprises: storing plural equalizer transfer function control values in a memory, passing the signal through an equalizer having a controllable transfer function, comparing a characteristic of the output signal of the equalizer with a reference signal and producing a difference signal, using the difference signal to select a set of stored transfer function control values from the memory, controlling the equalizer from the selected transfer function control values so as to minimize their difference from the reference signal. This apparatus and method are suitable for high-speed applications such as T1 and E1, requiring minimal configuration by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.