Patent · US Expired

Codec circuit and method for increasing the data transmission rate during a modem transmission

US6658097B2 · kind B2 · utility

2Cited by

2References

21Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Gerald Hofer · Diez, DE
Herbert Zojer · Torrance, US
Stephan Wimösterer · Munich, DE

Key dates

Filing date	Dec 21, 2001
Grant date	Dec 2, 2003
Priority date	—
Expiry date	Dec 21, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH04L25/4927
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Codec circuit for increasing the data transmission rate in a modem transmission with a first programmable digital filter (13) which is connected into a transmission signal path of the Codec circuit, a second programmable digital filter (22) which is connected into a reception signal path of the Codec circuit, a modem signal detection device (31) for detecting whether the transmission signal which is output on the transmission signal path or the reception signal which is received on the reception signal path is a modem signal, the modem signal detection device (31) switching the first and second digital filters (13, 22) to a widened filter bandwidth when a modem signal is detected.

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