Line driver with reduced power consumption

Details Line driver with reduced power consumption Line driver with reduced power consumption

2007-04-10

2007-04-10

Phu, Phuong (Department: 2611)

Pulse or digital communications

Cable systems and components

C375S259000, C326S087000, C326S106000

Reexamination Certificate

active

10384266

ABSTRACT:
A means for reducing the power consumption of the transmitter by storing the recent history of the transmitted data using a string of gates with taps from the string taken at points determined by the propagation delay of each gate and controlling driving transistors as a function of comparison of that history with input data so that, either the signal is driven into the transmission line at full strength, or at a level near the minimum needed to retain the state in the receiver.The advantage of the invention is that the line capacitance decays through the terminating resistors or discharge transistors, such that when the next state change is needed, then line has less stored energy needing to be discharged.

REFERENCES:
patent: 4630284 (1986-12-01), Cooperman
patent: 4728822 (1988-03-01), Kusaka et al.
patent: 4758743 (1988-07-01), Dehganpour et al.
patent: 4933579 (1990-06-01), Isobe et al.
patent: 5128555 (1992-07-01), Millman
patent: 5263001 (1993-11-01), Youn et al.
patent: 5319260 (1994-06-01), Wanlass
patent: 5495187 (1996-02-01), Martin
patent: 5717343 (1998-02-01), Kwong
patent: 6518792 (2003-02-01), Jong et al.
patent: 2006/0126745 (2006-06-01), Haq et al.
patent: 59 095730 (1984-06-01), None

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