Patent · US Expired

Side-tone control within a telecommunication instrument

US6768795B2 · kind B2 · utility

107Cited by

9References

14Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Alberto Diego Jimenez Feltström · Murray, US
Mats Ormin · Malm, SE
Ulf Lindgren · Mörbylånga, SE
Joakim Persson · Lund, SE

Key dates

Filing date	Jan 11, 2001
Grant date	Jul 27, 2004
Priority date	—
Expiry date	Aug 5, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04M1/585
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A side-tone control unit for a telecommunication instrument is configured to include a side-tone amplifier having a transfer function selectively controlled in accordance with a set of amplifier parameters, and a side-tone controller, coupled to the side-tone amplifier, for selectively applying the set of amplifier parameters to the side-tone amplifier based on the detected energy of an uplink signal and the detected energy of a downlink signal. The side tone controller can select a particular set of amplifier parameters by indexing a table in accordance with quantized values of the detected uplink signal energy and the detected downlink signal energy.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.