Patent · US Active

Longitudinal balance calibration for a subscriber line interface circuit

US7925005B2 · kind B2 · utility

2Cited by

19References

24Claims

0Family size

Assignee

Silicon Laboratories Inc. · US

Inventors

Michael J. Mills · Plano, US
Marius Goldenberg · Austin, US
Alan F. Hendrickson · Austin, US
Ion C. Tesu · Austin, US
Jiangtao Yi · 流花街道, CN

Key dates

Filing date	Oct 23, 2006
Grant date	Apr 12, 2011
Priority date	—
Expiry date	Oct 12, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04M3/005
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method of calibrating longitudinal balance for a subscriber line interface circuit includes providing a first and a second driver of a differential driver pair for driving a subscriber line. An output of each of the first and second drivers is coupled to a common output. The common output is coupled to an input of the first driver. The gain of at least one of the first and second drivers is adjusted until a calibration signal (V1) present at the input of the first driver is substantially the same as a calibration signal (V2) present at the input of the second driver.

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