Line driver with reduced power consumption
US7203243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2003 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | May 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0292
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.