Method and apparatus for a multi-protocol XDSL line driver

Details Method and apparatus for a multi-protocol XDSL line driver Method and apparatus for a multi-protocol XDSL line driver

2009-01-28

2011-10-11

Odom, Curtis (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S222000, C375S297000, C330S126000, C330S12400D

Reexamination Certificate

active

08036293

ABSTRACT:
A transceiver having shared and discrete components forming a transmit path and a receive path configured to couple to a communication medium for establishing a multi-tone modulated communication channel thereon. The transceiver includes a line driver component on the transmit path. The line driver is configured to respond to a protocol determination and by configuring at least one of a transmit power level and a transmit bandwidth of the multi-tone modulated communication channel on the communication medium. The line driver includes a plurality of pre-amplifiers each exhibiting a combination of transmit power and bandwidth for amplification of a transmit signal modulated with a selected multi-tone modulation protocol. The line driver also includes a single output amplifier having an output coupled to the communication medium and an input switchably coupled to an output of a selected one of the plurality of pre-amplifiers in response to the protocol determination.

REFERENCES:
patent: 5878332 (1999-03-01), Wang et al.
patent: 6853244 (2005-02-01), Robinson et al.

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