Method and apparatus for a high efficiency line driver

Details Method and apparatus for a high efficiency line driver Method and apparatus for a high efficiency line driver

2006-01-17

2006-01-17

Tran, Sinh (Department: 2646)

Telephonic communications

Subscriber line or transmission line interface

C330S297000

Reexamination Certificate

active

06987851

ABSTRACT:
A high efficiency line driver is disclosed. The line driver may be applied with equal advantage in wired and wireless communication media to amplify data signals with a minimum of power consumption. In an embodiment of the invention a line driver is disclosed which includes: at least one amplifier, a delay element, a control signal generator and a generator. The at least one amplifier includes at least one bias supply, a signal input and a signal output. The delay element accepts as an input the data signal and delays delivery of the data signal to the at least one line amplifier for amplification. The generator is responsive to a control signal to generate varying voltage levels corresponding thereto on the at least one bias supply of the at least one amplifier. The control signal generator is responsive to the input data signal to detect peaks therein and to generate the control signal corresponding thereto in advance of delivery of the data signal to the amplifier.

REFERENCES:
patent: 3720880 (1973-03-01), Le Seigneur
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patent: 4571554 (1986-02-01), Martin et al.
patent: 4873493 (1989-10-01), Fujiwara
patent: 4961219 (1990-10-01), Patel
patent: 6195028 (2001-02-01), Fredrickson et al.
LM2635 5-Bit Programmable Syncronous Buck Regulator Controller (National Semiconductor, May 2000).

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