Synthetic termination
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 7, 1999
Grant Date -
N/A
app pub date -
Dec 17, 1997
filing date -
Jun 17, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus for actively simulating an apparent termination input impedance to a current driven data communication equipment (DCE) device is disclosed. The DCE device utilizes several components to implement the apparent termination impedance. A first component is a current driver for providing a source of current within the DCE device. The current source is configured to actively drive an input-output signal line within a communication link. The current driven DCE also includes a mechanism for sensing an input-output signal line voltage, a mechanism for converting the sensed voltage to a feed back current and an active termination for simulating an apparent termination impedance. The converting mechanism is coupled to a summation node which sums current provided from the current driver and current from the converting mechanism to force the desired termination impedance in the DCE device, whilst performing DCE current drive function.
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