Physical layer transceiver architecture for a home network station connected to a telephone line medium
US6771750B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1998 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Oct 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/2845
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A physical layer transceiver of a home network station connected to a telephone medium has an architecture enabling adaptation of detection circuitry based on received network signals to enable reliable recovery of data signals. The physical layer transceiver includes an input amplifier that amplifies network signals according to one of 128 gain settings set by a receiver gain control signal. A signal conditioning circuit includes an envelope detector configured for outputting an envelope of the amplified received signal, and an energy detector configured for outputting an energy signal of the amplified received signals. The envelope signal and the energy signal are supplied to slicer threshold circuits, configured for outputting noise, peak, data event and energy event signals based on noise threshold, peak threshold, data transition threshold, and energy threshold signals, respectively. A digital controller controls the input amplifier gain and the threshold values, and adjusts the gain and threshold values based on the noise event signal and the peak event signal within an access ID (AID) interval. Hence, the receiver can be optimized on a per-packet basis for receiving network …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.