Local area network equalization system and method
US4637064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Apr 10, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/2801
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A global network equalization system for equalizing all modem receivers and modem transmitters connected to a local area network. A calibration signal is injected over the local area network from a reference or common point and received by each of the receivers. A parameter of the received signal (e.g. amplitude, power, or spectral density) is compared to a reference value and the gain of the receiver is adjusted in response thereto. When each of the receivers has been equalized, each transmitter and the associated receiver is tuned to a common vacant frequency. The transmitter transmits a signal that is then received by the associated receiver via the reference point. The received signal is compared to another reference value and the transmitter gain is adjusted in response thereto. In this way each transmitter and each receiver is equalized to the reference point of the local area network, and completely equalized communications can occur between any transmitter and receiver connected thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.